UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE YEAR ENDED DECEMBER 31, 2002
COMMISSION FILE NO. 1-8968

ANADARKO PETROLEUM CORPORATION
1201 LAKE ROBBINS DRIVE, THE WOODLANDS, TEXAS 77380-1046
(832) 636-1000

INCORPORATED IN THE STATE OF DELAWARE      EMPLOYER IDENTIFICATION NO. 76-0146568

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

Common Stock, par value $0.10 per share
Preferred Stock Purchase Rights

The above Securities are listed on the New York Stock Exchange.

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: None

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes X No ____.

Indicate by check mark if the disclosure of delinquent filers pursuant to

Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K ____.

Indicate by check mark whether registrant is an accelerated filer. Yes X No ____.

The aggregate market value of the voting stock held by non-affiliates of the registrant on June 28, 2002 was $12,128,594,000.

The number of shares outstanding of the Company's common stock as of February 28, 2003 is shown below:

             TITLE OF CLASS                      NUMBER OF SHARES OUTSTANDING
Common Stock, par value $0.10 per share                  248,925,066

 PART OF
FORM 10-K                DOCUMENTS INCORPORATED BY REFERENCE
Part II      Portions of the Anadarko Petroleum Corporation 2002 Annual
             Report to Stockholders.
Part III     Portions of the Proxy Statement, dated March 24, 2003, for
             the Annual Meeting of Stockholders of Anadarko Petroleum
             Corporation to be held April 24, 2003.


TABLE OF CONTENTS

                                                                           PAGE
PART I
  Item 1.   Business                                                         2
              General                                                        2
              Oil and Gas Properties and Activities                          2
                Proved Reserves and Future Net Cash Flows                    2
                Sales Volumes and Prices                                     3
                Properties and Activities -- United States                   4
                Properties and Activities -- Canada                         12
                Properties and Activities -- Algeria                        14
                Properties and Activities -- Other International            17
                Drilling Programs                                           19
                Drilling Statistics                                         19
                Productive Wells                                            20
              Marketing and Gathering Properties and Activities             21
              Minerals Properties and Activities                            21
              Segment and Geographic Information                            21
              Employees                                                     22
              Regulatory Matters and Additional Factors Affecting
              Business                                                      22
              Title to Properties                                           22
              Capital Spending                                              22
              Ratios of Earnings to Fixed Charges and Earnings to
                 Combined Fixed Charges and Preferred Stock Dividends       22
  Item 2.   Properties                                                      23
  Item 3.   Legal Proceedings                                               23
  Item 4.   Submission of Matters to a Vote of Security Holders             25
              Executive Officers of the Registrant                          25
PART II
  Item 5.   Market for Registrant's Common Equity and Related
              Stockholder Matters                                           27
  Item 6.   Selected Financial Data                                         27
  Item 7.   Management's Discussion and Analysis of Financial Condition
              and Results of Operations                                     28
  Item 7a.  Quantitative and Qualitative Disclosures About Market Risk      51
  Item 8.   Financial Statements and Supplementary Data                     53
  Item 9.   Changes in and Disagreements with Accountants on Accounting
              and Financial Disclosure                                     112
PART III
  Item 10.  Directors and Executive Officers of the Registrant             112
  Item 11.  Executive Compensation                                         112
  Item 12.  Security Ownership of Certain Beneficial Owners and
              Management and Related Stockholder Matters                   112
  Item 13.  Certain Relationships and Related Transactions                 112
  Item 14.  Controls and Procedures                                        112

PART IV
  Item 15.  Exhibits and Reports on Form 8-K                               113

1

PART I

ITEM 1. BUSINESS

GENERAL

Anadarko Petroleum Corporation is among the largest independent oil and gas exploration and production companies in the world, with 2.3 billion barrels of oil equivalent (BOE) of proved reserves as of December 31, 2002. The Company's major areas of operations are located in the United States, primarily in Texas, Louisiana, the mid-continent region and the western states, Alaska and in the shallow and deep waters of the Gulf of Mexico, as well as in Canada and Algeria. The Company is also active in Venezuela, Qatar, Oman, Egypt, Australia, Tunisia and Gabon. The Company actively markets natural gas, oil and natural gas liquids (NGLs) production and owns and operates gas gathering systems in its core producing areas. In addition, the Company engages in the hard minerals business through non-operated joint ventures and royalty arrangements in several coal, trona (natural soda ash) and industrial mineral mines located on lands within and adjacent to its Land Grant holdings. The Land Grant is an 8 million acre strip running through portions of Colorado, Wyoming and Utah where the Company owns most of its fee mineral rights.
In July 2000, the Company merged with Union Pacific Resources Group Inc., subsequently renamed Anadarko Holding Company (Anadarko Holding). The merger was a tax-free reorganization and accounted for as a purchase business combination. As such, the financial and operating results and property descriptions presented here, unless expressly noted otherwise, are those of Anadarko on a stand-alone basis for the periods up to the merger and of the combined Company from that date forward.
Unless the context otherwise requires, the terms "Anadarko" or "Company" refer to Anadarko and its subsidiaries. The Company's corporate headquarters are located at 1201 Lake Robbins Drive, The Woodlands, Texas 77380, where the telephone number is (832) 636-1000.

Available Information The Company files Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, registration statements and other items with the Securities and Exchange Commission (SEC). Anadarko provides access free of charge to all of these SEC filings, as soon as reasonably practicable after filing, on its Internet site located at www.anadarko.com. The Company will also make available to any stockholder, without charge, copies of its Annual Report on Form 10-K as filed with the SEC. For copies of this, or any other filings, please contact: Anadarko Petroleum Corporation, Public Affairs Department, P.O. Box 1330, Houston, Texas 77251-1330 or call (832) 636-3498.
In addition, the public may read and copy any materials Anadarko files with the SEC at the SEC's Public Reference Room at 450 Fifth Street, NW, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site (www.sec.gov) that contains reports, proxy and information statements and other information regarding issuers, like Anadarko, that file electronically with the SEC.

OIL AND GAS PROPERTIES AND ACTIVITIES

PROVED RESERVES AND FUTURE NET CASH FLOWS

As of December 31, 2002, Anadarko had proved reserves of 1.1 billion barrels of crude oil, condensate and NGLs and 7.2 trillion cubic feet (Tcf) of natural gas. Combined, these proved reserves are equivalent to 2.3 billion barrels of oil or 14.0 Tcf of gas. The Company's reserves have grown significantly over the past three years due to: the Anadarko Holding merger transaction in 2000; the acquisitions of Berkley Petroleum Corp. (Berkley) and Gulfstream Resources Canada Limited (Gulfstream) in 2001 and Howell Corporation (Howell) in 2002; substantial natural gas reserves discovered in the Gulf of Mexico, Canada and onshore in the U.S.; crude oil reserves added in Algeria and Alaska; and, through other acquisitions of producing properties.
As of December 31, 2002, Anadarko had proved developed reserves of 5.3 Tcf of natural gas and 686 million barrels (MMBbls) of crude oil, condensate and NGLs. Proved developed reserves comprise 67% of total proved reserves.
The Company's estimates of proved reserves and proved developed reserves at December 31, 2002, 2001 and 2000 and changes in proved reserves during the last three years are contained in the Supplemental

2

Information on Oil and Gas Exploration and Production Activities -- Unaudited (Supplemental Information) in the Anadarko Petroleum Corporation 2002 Consolidated Financial Statements (Consolidated Financial Statements) under Item 8 of this Form 10-K Annual Report (Form 10-K). The Company files annual estimates of certain proved oil and gas reserves with the U.S. Department of Energy, which are within 5% of the amounts included in the above estimates. See Critical Accounting Policies under Item 7 of this Form 10-K.
Also contained in the Supplemental Information in the Consolidated Financial Statements are the Company's estimates of future net cash flows, discounted future net cash flows before income taxes and discounted future net cash flows after income taxes from proved reserves.

SALES VOLUMES AND PRICES

The following table shows the Company's annual sales volumes. Volumes for natural gas are in billion cubic feet (Bcf) at a pressure base of 14.73 pounds per square inch and volumes for oil, condensate and NGLs are in MMBbls. Total volumes are in million barrels of oil equivalent (MMBOE). For this computation, six thousand cubic feet (Mcf) of gas is the energy equivalent of one barrel of oil, condensate or NGLs.

                                                              2002   2001   2000
                                                              ----   ----   ----
UNITED STATES
  Natural gas (Bcf)                                           507    573    338
  Oil and condensate (MMBbls)                                  31     34     15
  Natural gas liquids (MMBbls)                                 14     14     12
  Total (MMBOE)                                               130    144     83
CANADA
  Natural gas (Bcf)                                           135    121     46
  Oil and condensate (MMBbls)                                  12     13      4
  Natural gas liquids (MMBbls)                                  1      1     --
  Total (MMBOE)                                                35     34     12
ALGERIA
  Oil and condensate (MMBbls)                                  24      8     10
  Total (MMBOE)                                                24      8     10
OTHER INTERNATIONAL
  Natural gas (Bcf)                                            --      1      1
  Oil and condensate (MMBbls)                                   8     13      7
  Total (MMBOE)                                                 8     13      7
TOTAL
  Natural gas (Bcf)                                           642    695    385
  Oil and condensate (MMBbls)                                  75     68     36
  Natural gas liquids (MMBbls)                                 15     15     12
  Total (MMBOE)                                               197    199    112

3

The following table shows the Company's annual average sales prices and average production costs. The average sales prices include realized gains and losses for derivative contracts the Company enters to manage price risk related to the Company's sales volumes. Production costs are costs incurred to operate and maintain the Company's wells and related equipment and include cost of labor, well service and repair, location maintenance, power and fuel, property taxes, production and severance taxes and overhead charges. Certain amounts for prior years have been reclassified to conform to the current presentation. Additional information on volumes, prices and markets is contained in Financial Results and Marketing Strategies under Item 7 of this Form 10-K. Information on major customers is contained in Note 12 of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

                                                               2002     2001     2000
                                                              ------   ------   ------
UNITED STATES
  Sales price
     Natural gas (per Mcf)                                    $ 2.84   $ 4.23   $ 4.22
     Oil and condensate (per barrel)                           23.07    23.08    28.59
     Natural gas liquids (per barrel)                          14.98    16.44    21.65
  Production cost (per BOE)                                   $ 4.66   $ 4.66   $ 5.05
CANADA
  Sales price
     Natural gas (per Mcf)                                    $ 2.93   $ 4.38   $ 4.09
     Oil and condensate (per barrel)                           19.31    18.18    27.33
     Natural gas liquids (per barrel)                          12.11    18.32       --
  Production cost (per BOE)                                   $ 6.40   $ 5.97   $ 6.80
ALGERIA
  Sales price
     Oil and condensate (per barrel)                          $24.38   $23.97   $28.73
  Production cost (per BOE)                                   $ 1.78   $ 2.33   $ 2.61
OTHER INTERNATIONAL
  Sales price
     Natural gas (per Mcf)                                    $   --   $ 1.22   $ 1.08
     Oil and condensate (per barrel)                           19.92    14.35    18.35
  Production cost (per BOE)                                   $ 8.48   $ 5.71   $ 8.24
TOTAL
  Sales price
     Natural gas (per Mcf)                                    $ 2.86   $ 4.25   $ 4.19
     Oil and condensate (per barrel)                           22.55    20.56    26.42
     Natural gas liquids (per barrel)                          14.80    16.55    21.70
  Production cost (per BOE)                                   $ 4.79   $ 4.85   $ 5.27

PROPERTIES AND ACTIVITIES -- UNITED STATES

Reserves in the United States comprised 66% of Anadarko's total proved reserves at year-end 2002 compared to 61% in 2001 and 64% in 2000. During 2002, drilling results included 392 gas wells, 98 oil wells and 24 dry holes. The accompanying maps illustrate by state Anadarko's undeveloped and developed lease and fee acreage, number of net producing wells and other data relevant to its domestic onshore and offshore oil and gas operations.

ONSHORE -- LOWER 48 STATES

OVERVIEW About 54% of the Company's proved reserves are located onshore in the Lower 48 states, with operations primarily in Texas, Louisiana, the mid-continent region and western states. In 2002, average production from the Company's onshore properties was 1,165 million cubic feet per day (MMcf/d) of gas and 91 thousand barrels per day (MBbls/d) of crude oil, condensate and NGLs, or 53% of the Company's total production volumes. Anadarko has 2,642,000 gross
(1,904,000 net) undeveloped lease acres, 2,900,000 gross (1,959,000 net)
developed lease acres and 9,538,000 gross (8,488,000 net) fee acres onshore in the Lower 48 states.

4

[ONSHORE PROPERTIES MAP]

                                      NET           NET          NET         NET
                                  UNDEVELOPED    DEVELOPED       FEE      PRODUCING
                                     ACRES         ACRES        ACRES       WELLS
                                  -----------   -----------   ---------   ---------
ONSHORE:
United States
  Alabama                              1,241          2,676      11,473        20
  Alaska*                          1,161,766          5,851       7,978         7
  Arkansas                               835          1,100     333,715         1
  California*                         11,764            469       3,763         1
  Colorado                             9,773         20,507   2,888,248       210
  Florida                                 --             --       5,342        --
  Georgia                                 --             --       2,838        --
  Idaho                                   --             --         711        --
  Illinois                                --             --       7,738        --
  Indiana                                913             --       9,913        --
  Iowa                                    --             --         211        --
  Kansas*                            260,299        365,658      35,524     1,723
  Louisiana*                         146,609        131,207      13,736       181
  Michigan                                21             --          --        --
  Mississippi                         11,051          1,543      63,880         7
  Missouri                                --             --      11,321        --
  Montana                            137,462          1,538         357        81
  Nebraska                             4,643            926      28,118         1
  New Mexico                           5,729         23,878         418       151
  Nevada                                  --             --         440        --
  North Dakota                           201          1,791          --         5
  Oklahoma*                           75,851        194,144      35,366     1,375
  Oregon                                  --             --         741        --
  South Carolina                          --             --       2,734        --
  South Dakota                            --             --       3,161        --
  Tennessee                               --             --         902        --
  Texas*                             715,618      1,109,775     171,322     6,445
  Utah*                                7,716         23,138     690,155       155
  Virginia                                --             --          14        --
  Washington                              --             --       2,521        --
  West Virginia                          330             --          --        --
  Wyoming*                           514,272         80,555   4,163,092     2,065

OFFICE LOCATIONS:
United States
  Amarillo,Texas
  Anchorage, Alaska
  Midland, Texas
  The Woodlands, Texas

* Drilling activities were conducted in these areas in 2002.

5

EAST TEXAS AND LOUISIANA
Bossier Play Since operations began in 1996, the Company has discovered seven significant fields, achieved a development success rate of nearly 100% and expanded the Bossier play from east Texas into north Louisiana. The Bossier play consists of multiple fields and multiple pay zones. The majority of the Company's production is from the Bossier Sand interval.
During 2002, Anadarko continued drilling in the Bossier play and had a total of 14 rigs drilling (eight in east Texas and six in north Louisiana) at year-end. The Company drilled 83 wells in 2002 with a success rate of 93%. Bossier volumes for 2002 totaled 96 Bcf (net), or roughly 15% of the Company's total gas production, making it Anadarko's largest onshore gas area. Anadarko had a total of 489,000 net acres in the area at year-end 2002. During 2003, the Company expects to operate about 12 rigs (seven in east Texas and five in north Louisiana) to drill 81 wells, including at least four exploration wells, in the Bossier play. In 2003, total spending in the Bossier play is expected to be $251 million, which includes $12 million for exploration.
In the east Texas Bossier, Anadarko has drilled 473 wells and had a total of 359,000 net acres as of the end of 2002. During 2002, the Company's net gas production averaged 192 MMcf/d from the Bossier play of east Texas. Despite the significant reduction in drilling during 2002 -- the Company drilled 56 wells compared to over 140 wells in 2001 -- production declines were modest due to the Bossier field's production characteristic as a long-life asset. Exploration continued at a steady pace during 2002 to expand the play deeper into the basin and identify new field reserves. During 2002, a discovery was made with the Gregory A-1 well (100% working interest (WI)). One successful delineation well had been drilled as of the end of 2002 and delineation drilling continues. The Company also continued to expand the Dowdy Ranch field during 2002, drilling four successful delineation wells.
In the north Louisiana Bossier, the Vernon field was producing 70 MMcf/d of gas (net) from 78 wells at the end of 2002. Anadarko has extended the Vernon field significantly over the past three years through successful drilling. A total of 27 wells were drilled in the Vernon/Ansley area in 2002, with a 96% success rate. A 3-D seismic survey is being acquired in order to help identify exploration prospects. At year-end 2002, Anadarko's position in the play totaled 130,000 net acres.

Carthage Anadarko is conducting a successful development program in the Carthage area. The Company drilled eight Cotton Valley infill wells during 2002. Anadarko has additional infill locations to drill and is studying the potential for increased well density in the area. The Company had five rigs performing workovers and re-completions throughout the Carthage area at the end of 2002. Anadarko's net production from the Carthage area averaged 105 MMcf/d of gas and 2 MBbls/d of liquids during 2002. The Company has budgeted $22 million and plans to drill 20 wells in the Carthage area in 2003.

South Louisiana At year-end 2002, net volumes averaged 37 MMcf/d of gas and 10 MBbls/d of oil and NGLs. Activity in the Kent Bayou field during 2002 consisted primarily of re-completing existing wells. During 2002, the Company also sold several non-core properties in other areas of south Louisiana.

CENTRAL TEXAS/GULF COAST Anadarko's horizontal drilling program continues to be the focus in central Texas. During 2002, Anadarko drilled 52 wells, with a success rate of 94%, to exploit the multiple pay zones in the Giddings, Mossy Grove and Brookeland fields in central Texas. Anadarko also operates wells in the Masters Creek field located in Louisiana. The Company had a working interest ownership in 1,000,000 net acres in this area at the end of 2002, which was largely held by production. During 2002, net volumes averaged approximately 158 MMcf/d of gas, 16 MBbls/d of oil and 2 MBbls/d of NGLs. In 2002, Anadarko operated over 1,500 wells in this area. In 2003, Anadarko expects to drill 62 wells, including two exploratory wells, as part of a six-rig program. The Company has budgeted approximately $134 million for these projects in 2003.
The Company continued its cost-efficient horizontal re-entry program in the Giddings field. The cost to re-enter a well is about 40% less than the cost of a new well. During 2002, 33 wells were re-entered and completed. Anadarko plans to expand this program in 2003 and intends to re-enter 45 wells. Additionally, Anadarko continued its successful water-fracturing program. Approximately 90 wells were stimulated in 2002 and over 100 wells are expected to be stimulated in 2003.

6

During 2002, the Company continued development and exploration in the Mossy Grove field. The 2003 drilling program will continue to evaluate the potential of this multi-pay area.
Anadarko's development program included the drilling and completion of six wells in 2002 in the Brookeland field, where the Company has a working interest ownership in nearly 170,000 net acres. In 2003, the Company plans to continue development and looks to extend this field through increased drilling activity and water-fracture stimulation as well as the evaluation of a re-entry program similar to the Giddings field.

PERMIAN BASIN During 2002, Anadarko drilled 71 wells with a 99% success rate in the Permian basin. Two exploration wells were drilled -- one was a discovery that tested at 5 MMcf/d of gas and the other is being tested. Evaluation continues and additional exploration drilling is planned for 2003. In addition, the Company performed 237 workovers and re-completions and completed installation of a carbon dioxide (CO(2)) flood. Net production for 2002 averaged 91 MMcf/d of gas, 11 MBbls/d of oil and 2 MBbls/d of NGLs. Anadarko has interests in 419,000 gross (304,000 net) acres in the Permian basin and operates approximately 5,000 wells. During 2002, Anadarko made a strategic decision to exit some 300 non-core properties, covering 18,000 net acres, in southeast New Mexico with 2002 annual net production of about 700 thousand barrels of oil equivalent (MBOE). The properties were sold for $41 million in January 2003.
In the Ozona field, located in Texas, development continued with the Company drilling and completing 49 wells and re-completing 89 wells during 2002. In 2002, net production averaged 64 MMcf/d of gas. Anadarko operates about 1,900 wells in the Ozona field and plans to drill 52 new wells and re-complete 75 wells in 2003.
During 2002, the Company drilled 11 infill wells in the TXL North, TXL South and Goldsmith Cummins Deep waterflood units. Net production from these units averaged 3 MBbls/d of oil in 2002. Anadarko plans to drill an additional 74 infill wells in the area in 2003.

MID-CONTINENT
Hugoton Embayment Anadarko's drilling activities in the Hugoton Embayment, located in southwest Kansas and the Oklahoma and Texas panhandles, are focused on the deeper oil and gas zones below the shallow gas producing formations. Anadarko controls 978,000 gross (880,000 net) acres in this area and operates about 2,300 wells. The deep drilling program in Kansas and the Oklahoma panhandle utilizes 3-D seismic technology to locate oil and gas bearing zones. During 2002, the Beaver River field was a new discovery in Oklahoma. Success was also achieved drilling in the Ryus and Many Creeks fields in Kansas.
The Company's net production from the Hugoton Embayment area during 2002 averaged 170 MMcf/d of gas and 17 MBbls/d of oil, condensate and NGLs. In 2002, the Company drilled 32 deep wells with a 66% success rate. Anadarko also re-completed 16 wells and carried out workover operations on 126 wells in the area. In 2003, the Company has budgeted $22 million in the area and plans to drill about 26 wells.

Texas Panhandle During 2002, the Company produced an average of 24 MMcf/d of gas (net) from 218 wells completed in the Brown Dolomite or Red Cave formations in the West Panhandle field. This gas is exceptionally rich in NGLs, producing 40 barrels of NGLs per million cubic feet (MMcf) of gas in the Red Cave wells and 145 barrels of NGLs per MMcf of gas in the Brown Dolomite wells.

Central Oklahoma During 2002, net production from central Oklahoma was 25 MMcf/d of gas and 3 MBbls/d of oil. While continuing to develop the deeper gas producing zones, the majority of Anadarko's focus in 2002 has been developing a shallower oil play located in the Rush Creek field. In 2002, Anadarko drilled and completed 11 wells in the field resulting in a net production increase of 1 thousand barrels of oil equivalent per day (MBOE/d). During 2003, the Company has budgeted $15 million to drill about 20 wells in central Oklahoma. Anadarko plans to continue development in the Rush Creek and traditional deep gas areas.

7

WESTERN STATES
Overview Anadarko continues to increase its activity level and production in the western states area, with significant exploration and development activity in conventional and coalbed methane (CBM) plays. The western states area primarily includes the Company's oil and gas properties in the Land Grant area of Wyoming, Colorado and Utah. Economics on the Land Grant acreage are greatly enhanced by Anadarko's fee mineral ownership position. For example, in a typical non-operated well that is outside of the Land Grant, Anadarko may have a 25% working interest with a 20% net revenue interest. However, on the Land Grant, because of the Company's fee mineral ownership, Anadarko may have a 25% working interest with a 33.75% net revenue interest. Anadarko's operations on the Land Grant are concentrated in the Green River basin and the Overthrust area.
The Company currently has approximately 8,878,000 gross (8,313,000 net) acres, principally attributable to its Land Grant ownership. Anadarko and its partners drilled 184 wells in the area in 2002 with an overall success rate of 98%. Anadarko's 2002 net production from the western states area averaged 307 MMcf/d of gas, 9 MBbls/d of oil and 14 MBbls/d of NGLs. Anadarko plans to invest about $237 million in the western states area for exploration and development in 2003. The Company's 2003 plans include drilling 277 development and 2 exploratory wells in Wyoming, Colorado and Utah.

Acquisitions In December 2002, Anadarko acquired Howell for approximately $258 million, including the bank debt of Howell, which was $53 million. The Company booked 64 MMBOE of proved reserves, primarily in the Salt Creek and Elk Basin fields, related to this acquisition. Howell's net production of about 12 MBOE/d is primarily from the western states area. In a separate transaction, Anadarko acquired the rights to purchase significant quantities of CO(2) and the exclusive rights to market and transport the CO(2) into the Powder River basin for $3 million and certain future consideration based on the performance of the pipeline. The Company expects to invest an additional $200 million over the next four years for the development and installation of a CO(2) enhanced oil recovery project. Anadarko plans to build a 125 mile pipeline that would deliver CO(2) to the enhanced oil recovery project in the Salt Creek field and potentially could serve other enhanced oil recovery projects in Wyoming as well. These projects are expected to result in an increase in net production from the Salt Creek field from 5 MBOE/d to 35 MBOE/d by the end of 2006.

Wyoming During 2002, Anadarko's net production from its properties located in Wyoming averaged 221 MMcf/d of gas, 5 MBbls/d of oil and 11 MBbls/d of NGLs. In the Green River basin of Wyoming, Anadarko focused on conventional drilling projects in the Wamsutter and Brady areas. In 2002, the Company drilled or participated in 123 wells in the Green River basin, with an overall success rate of 98%. In 2003, the Company plans to spend $65 million to drill 93 additional wells in the area. During 2002, Anadarko drilled 17 operated development wells
(88% average WI) and participated in 93 outside-operated wells (23% average WI)
in the Wamsutter area. In 2003, the Company plans to double the number of operated wells drilled.
During 2002, the Company acquired 585 miles of new proprietary 2-D seismic data in the Hanna basin and the Overthrust Belt. Anadarko continues to process and interpret this seismic data to identify new plays and prospects in the under-explored basins of southern Wyoming. In 2003, the Company plans to drill two exploration wells based on this new seismic data. During 2002, the Bureau of Land Management approved the Fort Steele Federal Development Contract in the Hanna basin area. The Company holds a working interest ownership in 760,000 gross and net acres in this area. Anadarko drilled or participated in five exploratory wells in the western states area in 2002 -- three are being evaluated and two were unsuccessful.

Coalbed Methane Production from the Company's CBM properties continued to increase during 2002. At year-end 2002, net production averaged 61 MMcf/d of gas compared to 34 MMcf/d of gas in 2001. CBM gas production is expected to steadily increase over the next several years. In 2003, the Company plans to continue to explore for and develop CBM reserves and has budgeted $38 million to drill 130 wells.
The Company's Big George project in the Powder River basin of Wyoming started in late 2001. At year-end 2002, the project was producing 9 MMcf/d of gas (net) from 74 wells. During 2002, the Company drilled three wells in the Helper and Drunkard's Wash fields in Utah, with a success rate of 100%.
The Company continues to evaluate new CBM exploration opportunities on the Land Grant. During 2002, an Anadarko-operated pilot program was initiated at Copper Ridge in Wyoming (50% WI) to test the productivity of the Almond coal formation at a depth of about 3,200 feet. Four pilot wells were drilled and were producing 200 Mcf per day of gas at year-end 2002. Additionally, along the Land Grant, Anadarko entered into a 50/50 joint venture to develop 133,300 acres for CBM in the Atlantic Rim project area. Anadarko will operate 36 wells with first production expected in early 2003 and plans to drill 32 additional wells throughout the year within the joint venture.

8

ALASKA

OVERVIEW Anadarko's activity in Alaska is concentrated primarily on the North Slope. The Company had interests in 3,144,000 gross (1,162,000 net) undeveloped lease acres, 25,000 gross (6,000 net) developed lease acres and 16,000 gross (8,000 net) fee acres in Alaska at year-end 2002. In addition, the Company is finalizing agreements on leases covering 181,000 gross (60,000 net) acres in the Foothills area of the North Slope from Arctic Slope Regional Corporation under an exclusive option-to-lease agreement, under which Anadarko also retains the right to acquire leases on an additional 1,941,000 gross (647,000 net) acres. During 2002, Anadarko announced that it was the apparent high bidder on a total of 34 tracts in the National Petroleum Reserve-Alaska (NPR-A) Oil and Gas Lease Sale 2002. The 34 tracts cover more than 282,000 gross (96,000 net) acres and are located primarily west of the Company's Moose's Tooth discovery. Including the acres from the 2002 lease sale, Anadarko's leasehold in NPR-A totals about 910,000 gross (289,000 net) acres. In total, Anadarko had access to approximately 5,380,000 gross (1,923,000 net) acres in Alaska through current and pending leases or options.

NORTH SLOPE
Development The Alpine field (22% WI) on Alaska's North Slope produced an average of 96 MBbls/d of oil (gross) in 2002. A facility expansion to increase produced water handling in the field and eliminate minor oil train bottlenecks, scheduled to be completed in 2004, should increase production capacity to 110 MBbls/d. As of year-end 2002, 33 production wells and 32 injection or service wells had been completed. When completed, the entire Alpine development program is expected to have 94 horizontal wells from two drill sites.
During 2002 at Colville Delta 2, the drill site used to develop the western part of the field, development drilling continued with 19 wells (8 production and 11 injection wells) drilled and completed. The Nanuq and Fiord satellites (22% WI), previous discoveries near Alpine, are expected to be developed and produced through the Alpine facility beginning in 2006, filling in the natural production decline of Alpine.

Exploration During the 2001-2002 winter exploration season, the Company participated in the drilling of six wells. Four wells were located in the NPR-A and two in the Central Arctic. The Lookout #2 well successfully appraised the Lookout discovery. The well encountered the Alpine equivalent reservoir and tested at 4 MBbls/d of oil and 8 MMcf/d of gas after fracture stimulation. The Altamura #1, the Company's first operated well on the North Slope, encountered pay with low permeability and was temporarily abandoned. Results from the other wells have not yet been released. The Spark, Moose's Tooth and Rendezvous accumulations that have been identified within the vicinity require further delineation drilling and testing. An Environmental Impact Study has been initiated in cooperation with the Bureau of Land Management as the first step towards approval of development of reserves at the Spark, Lookout, Nanuq, Fiord and West Alpine fields.
During 2002, the Company participated in the acquisition of proprietary 3-D seismic in the NPR-A preparing for lease sales and 2003 drilling activity. The Company also acquired 2-D seismic and proprietary 3-D seismic in the Foothills.
During the 2002-2003 winter drilling season, Anadarko expects to participate in two exploration projects, the Puviaq prospect (40% WI), located near Teshekpuk Lake in the NPR-A and the Oberon prospect, an Alpine satellite opportunity. Anadarko is also planning to acquire proprietary 2-D seismic data in the Foothills and participate in the acquisition of proprietary 3-D seismic around the Alpine field. The Company will operate a drilling program to study the feasibility of producing methane hydrates from the arctic tundra. This program will utilize Anadarko's self-contained, elevated drilling platform called the Arctic Platform Drilling System, which is designed to be lightweight, modular and mobile. This system is intended to be utilized in logistically challenging areas with minimal surface impact, potentially extending traditional drilling seasons.

COOK INLET During 2002, the Company sold all of its Cook Inlet holdings including 41,000 net acres and net proved reserves of less than 1 MMBOE with no production.

9

GULF OF MEXICO

OVERVIEW At year-end 2002, about 8% of the Company's proved reserves were located offshore in the Gulf of Mexico. Net production volumes in 2002 from these properties averaged 230 MMcf/d of gas and 16 MBbls/d of oil, condensate and NGLs. At year-end 2002, Anadarko owned an average 70% interest in 371 blocks representing 441,000 gross (204,000 net) acres in developed properties and 1,450,000 gross (1,126,000 net) acres in undeveloped properties in the Gulf of Mexico. Anadarko also holds options to earn working interests covering an additional 106 blocks. During 2002, Anadarko participated in 23 wells in the Gulf of Mexico: 9 shelf conventional, 7 sub-salt and 7 deepwater wells. Drilling results in the Gulf of Mexico included 9 gas wells, 9 oil wells and 5 dry holes for a success rate of 78%. In the Gulf of Mexico, Anadarko has budgeted about $460 million for capital spending in 2003, which includes drilling about 40 wells.

SHELF CONVENTIONAL Shallow water projects in the Gulf of Mexico continue as the Company exploits the potential around several of its larger and more mature fields. Ongoing re-processing of seismic and re-mapping have generated numerous prospects, adding to the Company's large inventory of projects identified from extensive field studies. During 2002, nine successful wells were drilled for a 100% success rate. Anadarko has interests in a total of 93 blocks on the shelf.
Activity in 2002 was highlighted by the Company's continued success at South Marsh Island (SMI) 280/281 (30-50% WI). During 2002, the "H" and "I" platforms at SMI 280/281 were completed. Additional drilling and workovers are planned for 2003, including several deep tests. In 2003, the Company is planning to drill 18 development and three exploratory wells near its older existing fields.

SUB-SALT During 2002, Anadarko continued to delineate the Tarantula (100% WI) sub-salt discovery made during 2001, which is located on South Timbalier 308. The #2ST#1 confirmation well was drilled and encountered 153 feet of net pay in five zones. A third well was drilled in late 2002 to further delineate the discovery and encountered 44 feet of net pay in the primary zone. A fourth well drilled in 2003 encountered over 100 feet of pay in various intervals. The Company has authorized construction of an $86 million production platform during 2003 with a capacity of 100 MMcf/d of gas and 30 MBbls/d of oil. Production is expected to commence in the fourth quarter of 2004.
During 2002, production continued from the Hickory (50% WI) and Tanzanite (100% WI) sub-salt fields discovered in 1998 off the coast of Louisiana. The Hickory A-5 well, drilled in 2002, encountered 105 feet of net pay in four sands and has been completed in a deeper pay interval. This additional development well should increase production rates of the field and more effectively drain the reservoir.
Anadarko has commenced installation of equipment for the Pardner (100% WI) sub-sea tieback. First production, from this 2001 discovery, is expected during the second quarter of 2003 at a rate of 3 MBbls/d of oil.
Anadarko has interests in a total of 114 blocks in its sub-salt program, with 38 prospects identified. An additional 11 blocks could be earned within its option program. Three exploratory wells and six development wells are planned in the sub-salt for 2003.

DEEPWATER Marco Polo (100% WI), Anadarko's first deepwater development project, is located on Green Canyon Block 608 in 4,300 feet of water approximately 180 miles offshore Louisiana in the Gulf of Mexico. Anadarko made the Marco Polo discovery in 2000. During 2002, four development wells were drilled and had better than expected results -- thicker pay and higher quality sands. Anadarko drilled two additional development wells at Marco Polo in early 2003, both of which were successful.
In April 2002, the Company signed an agreement under which a production platform for its Marco Polo discovery, as well as other nearby fields, will be installed. The other party to the agreement will construct and own the platform and production facilities. Production capacity of the facility will be 120 MBbls/d of oil and 300 MMcf/d of gas, which is greater than expected production from Marco Polo. Anadarko will have firm capacity of 50 MBbls/d of oil and 150 MMcf/d of gas. The platform is currently under construction and installation is planned for late 2003. When completed, Anadarko will be the operator of the platform. Production is expected to commence in the first quarter of 2004.
During 2002, Anadarko and its partners announced a successful deepwater sub-salt appraisal well at K2 on Green Canyon Block 562 (52% WI) in the Gulf of Mexico, approximately six miles northwest of Marco Polo. The K2 #2 well encountered a total of 339 feet of oil pay in three sands in an untested fault block and reached target depth of 25,700 feet. The well extends the limits of the discovery on the K2 structure. Additional appraisal operations will continue in 2003.

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(OFFSHORE MAP)

                               NET          NET         NET
                           UNDEVELOPED   DEVELOPED   PRODUCING
                              ACRES        ACRES       WELLS
                           -----------   ---------   ---------
OFFSHORE:
  United States
     California..........      2,785           --        --
     Florida.............    189,590           --        --
     Louisiana*..........    451,502      172,237       156
     Mississippi.........    169,909        3,996        --
     Texas*..............    315,336       28,230        43

* Drilling activities were conducted in these areas in 2002.

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Anadarko has submitted plans of exploration to the Minerals Management Service on four deepwater prospects located in the eastern portion of the Gulf of Mexico, of which three are within and one is partially adjacent to the Lease Sale 181 area (see Lease Sales). Three of the permits have been approved and drilling began in early 2003.
Anadarko holds a total of 164 lease blocks in its deepwater program and has identified 29 prospects. An additional 95 blocks could be earned within its option program. Five deepwater exploratory wells are planned for 2003.

South Auger Participation Agreement Anadarko has a Participation Agreement with BP to explore 95 deepwater blocks in the Garden Banks and Keathley Canyon areas of the western Gulf of Mexico. The 95 blocks, held 100% by BP, are within a larger 640-block area of mutual interest where the two companies will license and reprocess 3-D seismic data. These blocks are in water depths ranging from 3,000 to 6,000 feet. The agreement gives Anadarko the option to earn a 33% to 66% working interest in the blocks. Anadarko will fund 100% of the licensing and re-processing costs and pay a disproportionately larger share of the first four wells drilled.

LEASE SALES In January 2002, Anadarko acquired 26 tracts (100% WI) in the Eastern Gulf of Mexico Lease Sale 181. The Company's total investment was $136 million. The 26 tracts cover nearly 150,000 acres in water depths ranging from 7,000 to 9,500 feet. The blocks included in Lease Sale 181 have not been available for exploration since 1988, long before major advancements occurred in seismic imaging and deepwater drilling and development technology. The Company is considering taking on partners to recover lease costs and reduce risk. Anadarko also acquired nine tracts (100% WI) covering about 42,000 acres at Gulf of Mexico Lease Sales 182 and 184 held during 2002. The Company's total investment was about $3 million.

GAS PROCESSING

The Company processes gas at various third-party plants under agreements generally structured to provide for the extraction and sale of NGLs in efficient plants with flexible commitments. The Company has agreements with four plants in the western states area, 14 plants in the mid-continent area and 11 plants in the gulf coast area. Anadarko also processes gas and has interests in three Company-operated plants and three non-operated plants in the western states. Anadarko's strategy to aggregate gas through Company-owned and third-party gathering systems allows Anadarko to secure processing arrangements in each of the regions where the Company has significant production.

PROPERTIES AND ACTIVITIES -- CANADA

OVERVIEW Anadarko has operations in Alberta, British Columbia, Saskatchewan and in the Northwest Territories. The Company has proved reserves in Canada of 288 MMBOE, which includes 1.3 Tcf of gas and 64 MMBbls of crude oil, condensate and NGLs. In 2002, net production from the Company's properties in Canada averaged 370 MMcf/d of gas and 35 MBbls/d of crude oil, condensate and NGLs, or 18% of the Company's total production volumes. During 2002, Anadarko participated in a total of 391 wells with a 97% success rate, including 294 gas wells, 84 oil wells and 13 dry holes. Anadarko has 9,357,000 gross (3,343,000 net) undeveloped lease acres, 1,811,000 gross (1,024,000 net) developed lease acres and 605,000 gross (605,000 net) fee acres in Canada.
The Company significantly increased its exploration activity in Canada during 2002, participating in 46 wells with an 83% success rate. As one of the most active drillers in Canada, Anadarko reached a peak of 26 operated rigs with 10 rigs drilling exploratory wells during 2002. The Company's 2003 capital budget of $360 million for Canada includes approximately $250 million for development drilling and infrastructure and $110 million for exploration, including approximately 43 exploration wells. The accompanying map illustrates the Company's developed and undeveloped lease and fee acreage, number of productive wells and other data relevant to its properties in Canada.

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(CANADA MAP)

                                             NET           NET         NET        NET
                                         UNDEVELOPED    DEVELOPED     FEE     PRODUCING
                                            ACRES         ACRES       ACRES      WELLS
                                         -----------    ---------   -------   ---------
CANADA:
  Alberta*..............................    979,887       554,116   516,257       1,096
  British Columbia*.....................    869,250       193,665        --         228
  Northwest Territories*................  1,119,283         1,863        --           1
  Saskatchewan*.........................    142,132       274,260    88,683       2,133
  Scotian Shelf.........................    231,975            --        --          --

OFFICE LOCATIONS:
  Canada
     Calgary, Alberta
     Fort St. John, British Columbia
     Medicine Hat, Alberta
     Peace River, Alberta


* Drilling activities were conducted in these areas in 2001.

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ALBERTA During 2002, production in the Saddle Hills area of northern Alberta reached a record 64 MMcf/d of gas after a natural gas pipeline was completed to a processing plant and wells were tied in. A total of 12 net wells were completed during 2002. In addition, Anadarko increased its position in the area by over 37,000 net acres during the year and acquired 86 square miles of 3-D seismic.
In the Alberta Foothills, a horizontal gas well was completed and tested at a rate of about 6 MMcf/d of gas. Anadarko participated in a second well in the Alberta Foothills that tested at about 7 MMcf/d of gas. In the Wild River area of west central Alberta, 21 wells were completed during 2002. Net production from the Wild River area was 34 MMcf/d of gas and 400 barrels per day of NGLs at the end of 2002. Regulatory approval for commingling production zones was obtained in 2002, allowing Anadarko to immediately complete up to six zones per well. In the Dawson oil field in northwest Alberta, 20 wells were completed in 2002.
During 2002, Anadarko sold its heavy oil assets in eastern Alberta in several separate transactions for a total of about $160 million. The sale included 28 MMBOE of net proved reserves and production of approximately 21 MBOE/d.

BRITISH COLUMBIA During 2002, in northeast British Columbia, two operated proprietary 3-D seismic programs were conducted over the Jedney and Adsett areas. The Company continued to experience success throughout the year in the Slave Point play. Several exploratory wells were completed and brought on production at an average rate of approximately 5 MMcf/d of gas.
In the British Columbia Foothills, the Monkman b-79-J (30% WI) discovery was tied in and came on production at an initial rate of 15 MMcf/d of gas. An offset well began drilling in the fourth quarter of 2002. In the evolving West Blueberry tight gas play, Anadarko brought four new wells on-line at an average rate of 5 MMcf/d of gas.

SASKATCHEWAN During 2002, the Company drilled and completed 203 shallow gas wells with an overall success rate of 100%. In the Hatton area, the Company drilled 168 operated wells and participated in another 28 non-operated wells. Net production from the Hatton area averaged 73 MMcf/d of gas in 2002.

NORTHWEST TERRITORIES Anadarko completed two proprietary 3-D seismic programs and a proprietary 2-D seismic program in the southern Northwest Territories near Fort Liard in 2002. The Netla A-68 well drilled in 2002 was a discovery.
Anadarko also completed a 122 mile proprietary 2-D seismic program over Block 407 (100% WI) and participated in three additional proprietary seismic programs in the Mackenzie Delta.

PROPERTIES AND ACTIVITIES -- ALGERIA

OVERVIEW Anadarko is actively developing and producing oil fields discovered by the Company in Algeria's Sahara Desert. Since 1989, Anadarko has participated in 99 productive wells (13 exploration and 86 delineation/ development) located in 13 fields in Algeria. Eight of the fields are actively being developed and are on production. Final approval to develop four of the fields has been requested and is pending government approval. One field was recently discovered and a Commerciality Report is being prepared. Anadarko has developed a good working relationship with Sonatrach, the national oil and gas enterprise of Algeria, its partner in all development projects within Algeria. Sonatrach has owned shares of the Company's common stock since 1986 and at year-end 2002 was the registered owner of 4.9% of Anadarko's outstanding common stock.
The Company has proved reserves in Algeria of 372 MMBbls of crude oil as of year-end 2002. In 2002, net sales volumes from the Company's properties in Algeria totaled 24 MMBbls of crude oil, or 12% of the Company's total sales volumes.
In 2002, Anadarko participated in 34 wells with a success rate of 88%. Anadarko plans to invest about $98 million in Algeria in 2003. At the end of 2002, the Company had 3,994,000 gross (1,221,000 net) acres in Algeria. The accompanying map illustrates the Company's developed and undeveloped acreage, number of productive wells and other data relevant to its properties in Algeria.

14

(ALGERIAN PROPERTIES MAP)

Algeria Undeveloped Acreage
Total 3.8 million acres (1.2 million acres net) Algeria Developed Acreage (HBNS, HBN, Ourhoud, HBNSE, BKNE, RBK, QBN & BKE fields)
Total 219,000 acres (54,000 acres net) Productive Wells
Total 99 (21 net)
Fields discovered to date shown graphically HBN field*
HBNE field*
HBNS field*
HBNSE field*
RBK field*
QBN field*
BKNE field*
BKE field
Ourhoud field*
EKT field*
EMN field*
EMK field*
EME field*
Blocks shown graphically
403c
403e
404*
406b
208*
211
Central Processing Facilities shown graphically HBNS field
Ourhoud field
* Drilling activities were conducted in these areas in 2002.

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CONTRACTS/PARTNERS
Blocks 404, 208 and 211 Production Sharing Agreement Anadarko's interest in the original production sharing agreement (PSA) is 50% before participation at the exploitation stage by Sonatrach. The Company has two joint venture partners, each with a 25% interest in the Algerian venture, also prior to participation by Sonatrach. Under the terms of the PSA, oil reserves that are discovered, developed and produced are shared by Sonatrach, Anadarko and its two joint venture partners. Anadarko and its joint venture partners funded Sonatrach's 51% share of exploration costs and are entitled to recover these exploration costs out of production in the exploitation phase. As of year-end 2002, Anadarko and its joint venture partners had recovered about 93% of Sonatrach's portion of exploration costs through an increased share of production (cost recovery oil) with the majority of the remaining 7% expected to be recovered during 2003. Sonatrach is responsible for 51% of development and production costs. Sonatrach and Anadarko formed a non-profit company, Groupement Berkine, to carry out the majority of their joint operating activities under the PSA. Sonatrach and Anadarko fund the expenditures incurred by Groupement Berkine according to their participating interests under the PSA. The exploration phase of the original PSA ended in 1998. In 2001, Anadarko and its partners signed an amendment to the PSA with Sonatrach, which allows exploration to resume on Blocks 404, 208 and 211. See Exploration.

Block 406b Production Sharing Agreement The Company has a separate exploration license for Block 406b in which Anadarko had a 100% interest. During 2002, the Company finalized an agreement to farm-out a 40% working interest in this block.

Block 403c/e Production Sharing Agreement In 2002, Anadarko was awarded exploration rights over Block 403c/e. Anadarko will hold a 67% interest in the exploration phase of this venture.

DEVELOPMENT
Block 404 -- Hassi Berkine South Central Production Facility Production from the Hassi Berkine South (HBNS) field averaged 125 MBbls/d of oil (gross) in 2002 compared to 77 MBbls/d of oil (gross) in 2001. The fourth processing unit was completed in April 2002, bringing the total HBNS facility capacity to 300 MBbls/d of oil. During 2002, three of the satellite fields - Hassi Berkine South East (HBNSE), Berkine North East (BKNE) and Rhourde Berkine (RBK) - commenced production and averaged 22 MBbls/d of oil (gross). During 2002, 17 wells were drilled in the HBNS and satellite fields, resulting in 16 productive wells and one unsuccessful well.
Groupement Berkine is also developing the Hassi Berkine (HBN) field that is located just to the north of the HBNS field. This producing field extends into Block 403, which is under a different association with Sonatrach. Unitization of the field was accomplished to facilitate development activities. A crude oil production train with the capacity to process 75 MBbls/d of oil has been installed as part of the HBNS facility. Production from the HBN field averaged 67 MBbls/d of oil (gross) in 2002. During 2002, three productive wells were drilled in the HBN field with a 100% success rate.

Block 404 -- Ourhoud Central Production Facility Anadarko is also actively involved in developing the Ourhoud field, the second largest oil field in Algeria. Located in the southern portion of Block 404, the Ourhoud field extends into Block 406a and Block 405 and is unitized with the companies with interests in those blocks. The field is operated by the Ourhoud Organization, which represents the interests of the three associations involved in this development. Production from the field commenced in November 2002 two months ahead of schedule and reached rates of 71 MBbls/d of oil (gross) by year-end 2002. Ourhoud is expected to be fully operational during the first half of 2003 with facility capacity reaching 230 MBbls/d of oil. During 2002, a total of six productive wells were drilled in the Ourhoud field.

Block 208 Anadarko also has several fields farther south on Block 208; these include the El Merk field (EMK), the El Kheit Et Tessekha field (EKT), the El Merk East field (EME) and the El Merk North field (EMN). During 2002, Sonatrach approved the Commerciality Reports for these fields and the Exploitation License Applications were submitted to the Ministry of Energy and Mines for approval. Once the Exploitation Licenses are approved, Anadarko will proceed with design and construction of a third Central Production Facility. During 2002, a total of five wells were drilled in the Block 208 fields, resulting in four productive wells and one unsuccessful well.

16

EXPLORATION The 1989 PSA, as amended in 2001, allows Anadarko and its joint venture partners to resume exploration on Blocks 404, 208 and 211, outside of the exploitation license boundaries encompassing the previous discoveries. These are the same blocks Anadarko and its joint venture partners began exploring in 1989 and the new agreement allows Anadarko to build on the knowledge gathered since then using current state-of-the-art technology to commence a new phase of exploration.
Under the terms of the three-phase exploration program, Anadarko and its joint venture partners will spend a minimum of $55 million. Anadarko and its joint venture partners will finance 100% of the exploration investment and Sonatrach will participate 51% in the development and exploitation phases of any discoveries. Where appropriate, existing facilities and infrastructure may be used to develop any discoveries. To date, 640 miles of proprietary 2-D seismic data have been acquired following the PSA amendment, which is under evaluation.
During 2002, Anadarko and its joint venture partners drilled three exploration wells one of which was successful. The Hassi Berkine North East (HBNE) #1 well, located in Block 404, just east of the HBN field, resulted in an oil discovery. A production test conducted in January 2003 flowed at a rate of 4 MBbls/d of oil. The Company is evaluating options for connecting this discovery to existing infrastructure. A fourth exploration well, Sif Fatima South West #1 located in Block 404, was drilled in early 2003 and the results are currently being evaluated.
The license for Block 406b has a three-year initial term. A work program commitment includes seismic acquisition and one exploration well. A 735 mile proprietary 2-D seismic acquisition program has been completed on this 686,000 acre block, located in the Berkine basin to the east of Anadarko's other license areas.
The license for Block 403c/e has a three-year initial term and increases Anadarko's gross acreage position by 399,000 acres in the Berkine basin. A work program commitment includes seismic acquisition and one exploration well.
Political unrest continues in Algeria. Anadarko continually monitors the situation and has taken reasonable and prudent steps to ensure the safety of employees and the security of its facilities in the remote regions of the Sahara Desert. Anadarko is unable to predict with certainty any effect the current situation may have on activity planned for 2003 and beyond. However, the situation has had no material effect to date on the Company's operations in Algeria, where the Company has had activities since 1989. See Regulatory Matters and Additional Factors Affecting Business -- Foreign Operations Risk under Item 7 of this Form 10-K.

PROPERTIES AND ACTIVITIES -- OTHER INTERNATIONAL

OVERVIEW The Company's other international oil and gas production and development operations are located primarily in Venezuela, Qatar and Oman. The Company also has interests in two non-operated offshore producing properties in Australia and an interest in a non-operated producing property in Egypt. The Company currently has exploration projects in Tunisia, Qatar, Oman, Gabon, Australia, the Faroe Islands, off the coast of Georgia in the Black Sea and other selected areas.
The Company has total proved reserves in these other international locations of 117 MMBbls of crude oil, condensate and NGLs and 144 Bcf of gas at year-end 2002. During 2002, net production from the Company's other international properties was 22 MBbls/d of crude oil, condensate and NGLs, or 4% of the Company's total production volumes. Anadarko participated in a total of 10 wells in its other international locations during 2002 with a success rate of 50%. Drilling results included five oil wells and five dry holes. Anadarko has 24,896,000 gross (10,435,000 net) undeveloped lease acres and 569,000 gross (155,000 net) developed lease acres in these international areas. See Regulatory Matters and Additional Factors Affecting Business -- Foreign Operations Risk under Item 7 of this Form 10-K.

VENEZUELA The Company's Venezuelan operation consists of the Oritupano-Leona contract area, a risk service contract in which the Company has a 45% participating interest. The area covers 395,000 gross (178,000 net) acres and had approximately 272 producing wells at year-end 2002. Oil sales volumes from the area averaged 13 MBbls/d net during 2002. The development and exploitation program in 2002 included two new well completions and the conversion of 13 idle wells to producing wells. During 2003, the Company expects to continue with the development of the Oritupano-Leona contract area, focusing most of the activities on re-completing wells and increasing fluid handling capacities within the field.
Currently, there is political unrest in Venezuela. Due to a national strike, production deliveries from the Oritupano-Leona area were halted in April and December 2002. Production resumed in January 2003 at lower

17

levels and is expected to be back at full production by the second quarter of 2003. Anadarko is unable to predict with certainty any effect the current situation may have on activity planned for 2003 and beyond. However, the situation is not expected to have a material adverse effect on the consolidated results of operations or financial position of the Company.

QATAR The Company acquired an additional interest and took over operatorship of offshore Qatar Blocks 12 and 13 during 2002. Anadarko now has a 92.5% interest in the Al Rayyan field, which is part of an Exploration and Production Sharing Agreement covering Blocks 12 and 13. Production from the Al Rayyan field, which is located in the northern part of Block 12, averaged 14 MBbls/d of oil (7 MBbls/d net) during 2002. The horizontal wells for the phase I field re-development were completed in 2002. In addition, process and utilities modules were constructed and installed on a permanent production facility. Approximately $40 million is budgeted for 2003 to complete the construction and installation of this offshore production facility, perform phase II development drilling and drill an exploration well on the southern part of Block 12. Following phase II, field production is expected to more than double. Evaluation of the remaining exploration potential of Block 12 was initiated in 2002 and should be completed in early 2003.
During 2002, the Company began a seismic feasibility study on Block 13, which will serve to define a seismic program expected to be acquired in 2003.
Anadarko also has a 49% interest in an Exploration and Production Sharing Agreement covering offshore Block 11. During 2002, an evaluation of the remaining exploration potential on Block 11 was performed. The results of that study have been presented to Qatar Petroleum, with additional discussions scheduled for early 2003.

OMAN Anadarko is the operator of an exploration and development project in the Hafar field on Block 30 in Oman. Anadarko plans to drill two wells in 2003. The first exploration well, Hamrat Duru #3, began drilling in February 2003 and is intended to test the gas potential of the large Hamrat Duru structure. The second well, the Nadir #2, will follow and is intended to delineate and extend the Hafar/Al Sahwa trend. Anadarko has a 100% interest in the field. Gas production will be sold to the Oman government under a long-term sales agreement.

EGYPT Anadarko has a 25% non-operated interest in the Zaafarana field offshore Egypt. The Company's net volumes in Egypt for 2002 averaged 1 MBbls/d of oil.

AUSTRALIA Anadarko has a 15% non-operated interest in production facilities in the Jabiru and Challis fields (ACL123) offshore Northwest Shelf. The Company's net volumes from these fields during 2002 averaged 1 MBbls/d of oil. Anadarko relinquished its interests in four licenses (ACL 4, AC/P 25, 26 and 27) in the Timor Sea following three unsuccessful wells in 2002. Anadarko has a 30% interest in four exploration permits, EPP 28, 29, 30 and 31 covering 15,500,000 gross acres offshore southern Australia in the Great Australian Bight. A deepwater exploration well is scheduled for drilling on EPP 29 in early 2003.

TUNISIA The Company increased its interest from 47% to 61% in 2002 and is the operator of the 1,100,000 acre Anaguid Block in the Ghadames basin of Tunisia. The acreage is on trend with the Company's discoveries in Algeria to the west. The CEM-1 and the SEA-1 wells are expected to spud in early 2003. Both wells will target the Silurian Acacus formation. In early 2003, Anadarko completed the drilling of an unsuccessful exploration well on the Sanrhar Block.

WEST AFRICA During 2002, the Company obtained a 55% interest in the Gryphon Block, a 2,400,000 acre tract offshore Gabon in the Gamba pre-salt trend. An exploration well, the Pembi #1, is expected to spud by the third quarter of 2003.
Anadarko is the operator and holds a 50% interest in the Agali Block offshore Gabon. During 2002, 3-D seismic data was processed and evaluated. Drilling may occur in late 2003 but will be after the resolution of a boundary dispute between Gabon and its neighbor to the north, Equatorial Guinea.
Anadarko drilled one exploration well in West Africa during 2002 on the Marine IX Block offshore the Republic of Congo. The Rita #1 well encountered thin gas pay but was deemed non-commercial. The Company is considering marketing its 42% interest in the block during the first quarter of 2003.

18

NORTH ATLANTIC MARGIN In the Faroe Islands, Anadarko is the operator and sole licensee of License 007 and holds a 28% interest in the adjacent non-operated License 006. The licenses cover a total of 617,000 acres. In 2002, the Company integrated seismic data as part of a comprehensive license and basin evaluation. In 2003, the Company will complete these studies and further develop a prospect inventory. The Company has no outstanding drilling commitments in the region.
In the United Kingdom Continental Shelf, Tranches 21 and 63 were relinquished in 2002. In Tranche 61, (7.5% interest) 49,000 acres surrounding two gas discoveries have been retained pending further evaluation.

GEORGIA -- BLACK SEA Anadarko has a Production Sharing Contract with the State of Georgia. The agreement gives Anadarko exploration rights to three blocks covering approximately 2,000,000 acres on the Black Sea Continental Shelf and extending 50 miles offshore. In 2002, the Company evaluated proprietary seismic data and plans to seek a partner to share cost and reduce risk in future seismic or drilling activities in 2003.

DRILLING PROGRAMS

The Company's 2002 drilling program focused on known oil and gas provinces in the United States (Lower 48, Alaska and Gulf of Mexico), Canada and Algeria. Exploration activity consisted of 114 wells, including 48 wells in the Lower 48, 6 wells in Alaska, 7 wells offshore in the Gulf of Mexico, 46 wells in Canada, 3 wells in Algeria and 4 wells at other international locations. Development activity consisted of 835 wells, which included 429 wells in the Lower 48, 8 wells in Alaska, 16 wells offshore in the Gulf of Mexico, 345 wells in Canada, 31 wells in Algeria and 6 wells at other international locations.

DRILLING STATISTICS

The following table shows the results of the oil and gas wells drilled and tested:

                              NET EXPLORATORY                  NET DEVELOPMENT
                       ------------------------------   ------------------------------
                       PRODUCTIVE   DRY HOLES   TOTAL   PRODUCTIVE   DRY HOLES   TOTAL    TOTAL
                       ----------   ---------   -----   ----------   ---------   -----   -------
2002
United States             34.0         13.8      47.8     275.2          5.1     280.3     328.1
Canada                    30.6          6.8      37.4     305.6          4.0     309.6     347.0
Algeria                    0.5          1.0       1.5       7.3          0.7       8.0       9.5
Other International         --          3.7       3.7       3.7          0.9       4.6       8.3
                         -----        -----     -----     -----        -----     -----   -------
Total                     65.1         25.3      90.4     591.8         10.7     602.5     692.9
                         -----        -----     -----     -----        -----     -----   -------
2001
United States             33.6         18.3      51.9     544.0          8.4     552.4     604.3
Canada                    28.0          6.0      34.0     381.1         18.0     399.1     433.1
Algeria                     --           --        --       3.5          0.2       3.7       3.7
Other International         --          2.7       2.7      11.4           --      11.4      14.1
                         -----        -----     -----     -----        -----     -----   -------
Total                     61.6         27.0      88.6     940.0         26.6     966.6   1,055.2
                         -----        -----     -----     -----        -----     -----   -------
2000
United States             12.9          9.0      21.9     390.8         10.4     401.2     423.1
Canada                     8.9          8.0      16.9      98.1         14.4     112.5     129.4
Algeria                     --           --        --       1.7           --       1.7       1.7
Other International         --          0.6       0.6       5.7           --       5.7       6.3
                         -----        -----     -----     -----        -----     -----   -------
Total                     21.8         17.6      39.4     496.3         24.8     521.1     560.5
                         -----        -----     -----     -----        -----     -----   -------

19

The following table shows the number of wells in the process of drilling or in active completion stages and the number of wells suspended or waiting on completion as of December 31, 2002:

                                          WELLS IN THE PROCESS
                                             OF DRILLING OR            WELLS SUSPENDED OR
                                          IN ACTIVE COMPLETION        WAITING ON COMPLETION
                                        -------------------------   -------------------------
                                        EXPLORATION   DEVELOPMENT   EXPLORATION   DEVELOPMENT
                                        -----------   -----------   -----------   -----------
UNITED STATES
  Gross                                       4            47            12            31
  Net                                       3.3          33.9           6.1          13.7
CANADA
  Gross                                      11            21             2            26
  Net                                       8.5          17.3           1.4          20.4
ALGERIA
  Gross                                      --             4            --             1
  Net                                        --           0.9            --           0.2
OTHER INTERNATIONAL
  Gross                                       1             1            --             2
  Net                                       1.0           0.5            --           1.9
TOTAL
  Gross                                      16            73            14            60
  Net                                      12.8          52.6           7.5          36.2

PRODUCTIVE WELLS

As of December 31, 2002, the Company had a working interest ownership in productive wells as follows:

                                                              OIL WELLS*   GAS WELLS*
                                                              ----------   ----------
UNITED STATES
  Gross                                                          9,089        10,106
  Net                                                          6,207.0       6,420.3
CANADA
  Gross                                                          1,037         3,530
  Net                                                            646.4       2,811.4
ALGERIA
  Gross                                                             99            --
  Net                                                             21.4            --
OTHER INTERNATIONAL
  Gross                                                            302            --
  Net                                                            136.2            --
TOTAL
  Gross                                                         10,527        13,636
  Net                                                          7,011.0       9,231.7


* Includes wells containing multiple completions as follows:

Gross                                                             191         1,682
Net                                                             160.9       1,319.3

20

MARKETING AND GATHERING PROPERTIES AND ACTIVITIES

MARKETING The Company's marketing department actively manages sales of its oil and gas through Anadarko Energy Services Company, Anadarko, Anadarko Canada Corporation and Anadarko Holding. The Company markets its production to creditworthy customers at competitive prices, maximizing realized prices while managing credit exposure. The Company purchases some physical volumes for resale primarily from partners and producers near Anadarko's production. These purchases allow the Company to aggregate larger volumes of gas and attract larger, creditworthy customers, which in turn enhances the value of the Company's production.
The Company sells natural gas under a variety of contracts and may also receive a service fee related to the level of reliability and service required by the customer. The Company has the capability to move large volumes of gas into and out of the "daily" gas market to take advantage of any price volatility. Included in this strategy is the use of leased natural gas storage facilities and various derivative instruments. However, the Company does not engage in market-making practices nor does it trade in any non-energy-related commodities. The Company's marketing function does not engage in round-trip trades and does not participate in any marketing-related partnerships.

GAS GATHERING Anadarko owns and operates seven major gas gathering systems in the United States, where the Company has substantial gas production. The systems are: Antioch Gathering System in the Southwest Antioch field of Oklahoma; Sneed System in the West Panhandle field of Texas; Hugoton Gathering System in southwest Kansas; Dew Gathering System in east Texas; Pinnacle Gathering System in east Texas; CJV/SEC Gathering System in the Carthage field of east Texas; and Vernon Gathering System in the Vernon field of north Louisiana.
The Company's major gathering systems have more than 3,000 miles of pipeline connecting about 3,300 wells and averaged more than 730 MMcf/d of gas throughput in 2002. In addition, Anadarko operates numerous other smaller gas gathering systems.

MINERALS PROPERTIES AND ACTIVITIES

The Company's minerals properties contribute to operating income through non-operated joint venture and royalty arrangements in coal, trona and industrial mineral mines across the Company's extensive fee mineral interest in the Land Grant. The Company reinvests the cash flow from its hard minerals operations primarily into its oil and gas operations.
The Company's low sulfur coal deposits, located primarily in southern Wyoming, compete with other western coal producers for industrial and utility boiler markets, which burn the coal to produce steam used to generate electricity. Most of the Company's coal interests use the surface mining method of extraction. Because of the high extraction and transportation costs, additional development of the Company's reserves is dependent on increased coal usage in local markets. In addition to fee mineral ownership of and royalty interests in coal reserves, the Company owns a 50% non-operating interest in Black Butte Coal Company. Black Butte Coal Company produces approximately 3 million tons of coal per year.
The world's largest known deposit of trona, comprising 90% of the world's trona resources, is located in the Green River basin in southwestern Wyoming. Natural soda ash, which is produced by refining trona ore, is used primarily in the production of glass, in the paper and water treatment industries and in the manufacturing of certain chemicals and detergents. The Company owns interests in lands containing approximately 50% of these reserves and has leased a portion of those lands to companies that mine and refine trona. In addition to fee mineral ownership of and royalty interest in trona reserves, the Company owns a 49% non-operating interest in the OCI Wyoming LP soda ash refining facility near Green River, Wyoming. Among domestic producers, this facility is ranked second in soda ash capacity producing over 1 million tons per year.

SEGMENT AND GEOGRAPHIC INFORMATION

Information on operations by segment and geographic location is contained in Note 13 of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

21

EMPLOYEES

As of December 31, 2002, the Company had about 3,800 employees. Relations between the Company and its employees are considered to be satisfactory. The Company has had no significant work stoppages or strikes pertaining to its employees.

REGULATORY MATTERS AND ADDITIONAL FACTORS AFFECTING BUSINESS

See Regulatory Matters and Additional Factors Affecting Business under Item 7 of this Form 10-K.

TITLE TO PROPERTIES

As is customary in the oil and gas industry, only a preliminary title examination is conducted at the time properties believed to be suitable for drilling operations are acquired by the Company. Prior to the commencement of drilling operations, a thorough title examination of the drill site tract is conducted and curative work is performed with respect to significant defects, if any, before proceeding with operations. A thorough title examination has been performed with respect to substantially all leasehold producing properties owned by the Company. Anadarko believes the title to its leasehold properties is good and defensible in accordance with standards generally acceptable in the oil and gas industry subject to such exceptions which, in the opinion of counsel employed in the various areas in which the Company has conducted exploration activities, are not so material as to detract substantially from the use of such properties.
The leasehold properties owned by the Company are subject to royalty, overriding royalty and other outstanding interests customary in the industry. The properties may be subject to burdens such as liens incident to operating agreements and current taxes, development obligations under oil and gas leases and other encumbrances, easements and restrictions. Anadarko does not believe any of these burdens will materially interfere with its use of these properties.

CAPITAL SPENDING

See Capital Resources and Liquidity under Item 7 of this Form 10-K.

RATIOS OF EARNINGS TO FIXED CHARGES AND EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

Anadarko's ratios of earnings to fixed charges was 3.83 and earnings to combined fixed charges and preferred stock dividends was 3.74 for the year ended December 31, 2002. As a result of the Company's net loss in 2001, Anadarko's earnings did not cover fixed charges by $599 million and did not cover combined fixed charges and preferred stock dividends by $610 million. Anadarko's ratios of earnings to fixed charges was 7.35 and earnings to combined fixed charges and preferred stock dividends was 6.80 for the year ended December 31, 2000.
These ratios were computed by dividing earnings by either fixed charges or combined fixed charges and preferred stock dividends. For this purpose, earnings include income before income taxes and fixed charges. Fixed charges include interest and amortization of debt expenses and the estimated interest component of rentals. Preferred stock dividends are adjusted to reflect the amount of pretax earnings required for payment.

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ITEM 2. PROPERTIES

Information on Properties is contained in Item 1 of this Form 10-K and in Note 17 -- Commitments of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

ITEM 3. LEGAL PROCEEDINGS

GENERAL The Company is a defendant in a number of lawsuits and is involved in governmental proceedings arising in the ordinary course of business, including, but not limited to, royalty claims, contract claims and environmental claims. The Company has also been named as a defendant in various personal injury claims, including numerous claims by employees of third-party contractors alleging exposure to asbestos and benzene while working at a refinery in Corpus Christi, Texas, which Anadarko Holding sold in segments in 1987 and 1989. While the ultimate outcome and impact on the Company cannot be predicted with certainty, management believes that the resolution of these proceedings will not have a material adverse effect on the consolidated financial position of the Company, although results of operations and cash flow could be significantly impacted in the reporting periods in which such matters are resolved. Discussed below are several specific proceedings.

ROYALTY LITIGATION During September 2000, the Company was named as a defendant in a case styled U.S. of America ex rel. Harold E. Wright v. AGIP Company, et al. (the "Gas Qui Tam case") filed in the U.S. District Court for the Eastern District of Texas, Lufkin Division. This lawsuit generally alleges that the Company and 118 other defendants improperly measured and otherwise undervalued natural gas in connection with a payment of royalties on production from federal and Indian lands. The case has been transferred to the U.S. District Court, Multi-District Litigation Docket pending in Wyoming. Based on the Company's present understanding of the various governmental and False Claims Act proceedings described above, the Company believes that it has substantial defenses to these claims and intends to vigorously assert such defenses. However, if the Company is found to have violated the Civil False Claims Act, the Company could be subject to a variety of sanctions, including treble damages and substantial monetary fines. Motions to dismiss on the grounds that plaintiffs did not provide new information for the government to file suit upon were filed in January 2003, with a hearing date expected in May 2003.
A group of royalty owners purporting to represent Anadarko Holding's gas royalty owners in Texas (Neinast, et al.) was granted class action certification in December 1999, by the 21st Judicial District Court of Washington County, Texas, in connection with a gas royalty underpayment case against the Company. This certification did not constitute a review by the Court of the merits of the claims being asserted. The royalty owners' pleadings did not specify the damages being claimed, although most recently a demand for damages in the amount of $100 million was asserted. The Company appealed the class certification order. A favorable decision from the Houston Court of Appeals decertified the class. The royalty owners did not appeal this matter to the Texas Supreme Court and the decision from the Houston Court of Appeals became final in the second quarter of 2002. The royalty owners recently filed a new petition alleging that the class may properly be brought so long as "sub-class" groups are broken out. The Company is vigorously contesting this new petition.
A class action lawsuit titled Gilbert H. Coulter, et al. v. Anadarko Petroleum Corporation has been certified in the 26th Judicial District Court, Stevens County, Kansas. In this action, the royalty owners contend that royalty was underpaid as a result of the deduction for certain post-production costs in the calculation of royalty. The Company believes that its method of calculating royalty was proper and that its gas was marketable in the condition produced, and thus plaintiffs' claims are without merit. This case was certified as a class action in August 2000 and was tried in February 2002. It is uncertain when the trial court will render its ruling.

CITGO LITIGATION CITGO Petroleum Corporation's (CITGO) claims arise out of an Asset Purchase and Contribution Agreement in 1987 whereby Anadarko Holding's predecessor sold a refinery located in Corpus Christi, Texas to CITGO's predecessor. After the sale of the refinery, numerous individuals living near the refinery sued CITGO (the Neighborhood Litigation) thereby implicating the Asset Purchase and Contribution Agreement indemnity provision. CITGO and Anadarko Holding eventually entered into a settlement agreement to allocate, on an interim basis, each party's liability for defense and liability cost in that and related litigation. That agreement provides that once the Neighborhood Litigation and certain related claims are resolved, then the parties will determine their final indemnity obligations to each other through binding arbitration. At the present time, Anadarko Holding and CITGO have agreed to defer arbitrating the allocation of responsibility for this

23

liability in order to focus their efforts on a global settlement. Arbitration will resume upon request of either CITGO or Anadarko Holding. In conjunction with this matter, Anadarko Holding sued Continental Insurance for denial of coverage for claims related to this dispute. Anadarko Holding and Continental Insurance settled the insurance coverage litigation which resulted in Continental Insurance paying a portion of Anadarko Holding's claims. Negotiations and discussions with CITGO continue. Anadarko Holding has offered to settle all outstanding issues for approximately $4 million and a liability for this amount has been accrued.

KANSAS AD VALOREM TAX
General The Natural Gas Policy Act of 1978 allowed a "severance, production or similar" tax to be included as an add-on, over and above the maximum lawful price charged for natural gas. Based on the Federal Energy Regulatory Commission (FERC) ruling that the Kansas ad valorem tax was such a tax, the Company collected the Kansas ad valorem tax.

Background of PanEnergy Litigation FERC's ruling regarding the ability of producers to collect the Kansas ad valorem tax was appealed to the United States Court of Appeals for the District of Columbia Circuit (D.C. Circuit). The Court held in June 1988 that FERC failed to provide a reasoned basis for its findings and remanded the case to FERC.
Ultimately, the D.C. Circuit issued a decision on August 2, 1996 ruling that producers must refund all Kansas ad valorem taxes collected relating to production since October 1983. The Company filed a petition for writ of certiorari with the Supreme Court. That petition was denied on May 12, 1997.

PanEnergy Litigation On May 13, 1997, the Company filed a lawsuit in the Federal District Court for the Southern District of Texas against PanEnergy seeking declaration that pursuant to prior agreements Anadarko is not required to issue refunds to PanEnergy for the principal amount of $14 million (before taxes) and, if the petition for adjustment is denied in its entirety by FERC with respect to PanEnergy refunds, interest in an amount of $38 million (before taxes). The Company also sought from PanEnergy the return of the $1 million (before taxes) charged against income in 1993 and 1994. In October 2000, the U.S. Magistrate issued recommendations concerning motions for summary judgment previously filed by both parties. In essence, the Magistrate's recommendation finds that the Company should be responsible for refunds attributable to the time period following August 1, 1985 while Duke Energy (as the successor company to Anadarko Production Company) should be responsible for refunds attributable to the time period before August 1, 1985.
The Company reached a settlement agreement with PanEnergy that required the Company to pay $15 million for settlement in full of all matters relating to the refunds of Kansas ad valorem tax reimbursements collected by the Company as first seller from August 1, 1985 through 1988. The settlement agreement was approved by FERC and paid by Anadarko during 2001. The settlement agreement does not have any impact on the outstanding dispute between the Company and PanEnergy in connection with the refunds that relate to the Cimmaron River System. Anadarko's net income for 2001 included a $15 million charge (before taxes) related to the settlement agreement. Discussions with the Kansas Corporation Commission and PanEnergy to reach a settlement of the Cimmaron River System dispute are ongoing. At this time, it is estimated that a resolution may be reached in the first quarter of 2003 that may result in payment of about $6 million by the Company. A provision was charged against income in 2001.

Other Litigation The Company has a reserve of about $2 million for Kansas ad valorem tax refunds. This amount reflects all principal and interest that may be due at the conclusion of all regulatory proceedings and litigation to parties other than PanEnergy.

OTHER The Company is subject to other legal proceedings, claims and liabilities which arise in the ordinary course of its business. In the opinion of the Company, the liability with respect to these actions will not have a material effect on the Company.

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ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

There were no matters submitted to a vote of security holders during the fourth quarter of 2002.

EXECUTIVE OFFICERS OF THE REGISTRANT

                                    AGE AT END
               NAME                  OF 2003                          POSITION
               ----                 ----------                        --------
Robert J. Allison, Jr.                  64       Chairman of the Board
John N. Seitz                           52       President and Chief Executive Officer
Charles G. Manley                       59       Executive Vice President, Administration
Michael E. Rose                         56       Executive Vice President and Chief Financial
                                                   Officer
William D. Sullivan                     47       Executive Vice President, Exploration and
                                                   Production
Rex Alman III                           52       Senior Vice President, Algeria
Michael D. Cochran                      61       Senior Vice President, Strategy and Planning
James R. Larson                         53       Senior Vice President, Finance
Richard J. Sharples                     56       Senior Vice President, Marketing and Minerals
Bruce H. Stover                         54       Senior Vice President, Worldwide Business
                                                   Development
Robert P. Daniels                       44       Vice President, Canada
Diane L. Dickey                         47       Vice President and Controller
James J. Emme                           47       Vice President, Exploration
Morris L. Helbach                       58       Vice President, Information Technology Services
                                                   and Chief Information Officer
Richard A. Lewis                        59       Vice President, Human Resources
J. Anthony Meyer                        45       Vice President, International and Alaska
                                                   Operations
Mark L. Pease                           47       Vice President, Domestic Operations
Gregory M. Pensabene                    53       Vice President, Government Relations and Public
                                                   Affairs
Albert L. Richey                        54       Vice President and Treasurer
Charlene A. Ripley                      39       Vice President
Suzanne Suter                           57       Vice President, Corporate Secretary, Chief
                                                   Governance Officer and Interim General Counsel
A. Paul Taylor, Jr.                     54       Vice President, Investor Relations
Donald R. Willis                        53       Vice President, Corporate Services

Mr. Allison relinquished the role of Chief Executive Officer in 2002 and remains Chairman of the Board. He was named Chairman of the Board and Chief Executive Officer effective October 1986. He has worked for the Company since 1973.
Mr. Seitz was named President and Chief Executive Officer in 2002. He was named President and Chief Operating Officer in 1999. He was named Executive Vice President, Exploration and Production and a member of the Company's Board of Directors during 1997. Prior to that, Mr. Seitz served as Senior Vice President, Exploration since 1995. He has worked for the Company since 1977.
Mr. Manley was named Executive Vice President, Administration in 2000. Prior to this position, he served as Senior Vice President, Administration since 1993. He has worked for the Company since 1974.
Mr. Rose was named Executive Vice President and Chief Financial Officer in 2000. Prior to this position, he served as Senior Vice President, Finance and Chief Financial Officer since 1993. He has worked for the Company since 1978.
Mr. Sullivan was named Executive Vice President, Exploration and Production in 2001. Prior to this position, he served as Vice President, Operations -- International, Gulf of Mexico and Alaska since 2000, Vice President, International Operations since 1998 and Vice President, Algeria since 1995. He has worked for the Company since 1981.
Mr. Alman was named Senior Vice President, Algeria in 2002 and he was named Senior Vice President, Domestic Operations in 2001. Prior to this position, he served as Vice President, Domestic Operations since 1997. He has worked for the Company since 1976.

25

Dr. Cochran was named Senior Vice President, Strategy and Planning in 2001. Prior to this position, he served as Vice President, Exploration since 1997. He has worked for the Company since 1987.
Mr. Larson was named Senior Vice President, Finance in 2002. Prior to this position, he served as Vice President and Controller since 1995. He has worked for the Company since 1983.
Mr. Sharples was named Senior Vice President, Marketing and Minerals in 2001. Prior to this position, he served as Vice President, Marketing since he joined the Company in 1993.
Mr. Stover was named Senior Vice President, Worldwide Business Development in 2001. Prior to this position, he served as Vice President, Worldwide Business Development since 1998 and Vice President, Acquisitions since 1993. He has worked for the Company since 1980.
Mr. Daniels was named Vice President, Canada in 2001. Prior to this position, he served in various managerial roles in the Exploration Department for Anadarko Algeria Company LLC. He has worked for the Company since 1985.
Ms. Dickey was named Vice President and Controller in 2002. Prior to this position, she served as Assistant Controller since 1995. She has worked for the Company since 1978.
Mr. Emme was named Vice President, Exploration in 2001 and named Vice President, Canada in 2000. Prior to this he served in various managerial roles in the Exploration Department. Mr. Emme has worked for the Company since 1981.
Mr. Helbach joined Anadarko in 2000 as Vice President, Information Technology Services and Chief Information Officer. Prior to joining Anadarko, he was General Manager and Chief Information Officer at Conoco, Inc. Mr. Lewis was named Vice President, Human Resources in 1995. He joined the Company as Manager Human Resources in 1985.
Mr. Meyer was named Vice President, International and Alaska Operations in 2002 and was named Vice President, Algeria in 2001. Prior to this position, he served as President and General Manager, Anadarko Algeria Company, LLC and in other managerial roles for Anadarko Algeria Company, LLC and in the Operations Department. He has worked for the Company since 1981.
Mr. Pease was named Vice President, Domestic Operations in 2002. Prior to this position, he served as Vice President, International and Alaska Operations since September 2001, Vice President, Engineering and Technology since February 2001, Vice President, Algeria since 1998 and as President and General Manager, Anadarko Algeria Company, LLC since 1993. He has worked for the Company since 1979.
Mr. Pensabene joined Anadarko in 1997 as Vice President, Government Relations. Prior to joining Anadarko, he was a partner in the law firm of Muys & Pensabene from 1996 to 1997.
Mr. Richey was named Vice President and Treasurer in 1995. He joined the Company as Treasurer in 1987.
Ms. Ripley was named Vice President in 2003. Prior to this position, she served as Vice President, General Counsel and Secretary of Anadarko Canada Corporation and its predecessor since 1998. She has worked for the Company since 1997.
Ms. Suter was named Vice President, Corporate Secretary and Chief Governance Officer in 2002 and in January 2003 she was given the additional position of Interim General Counsel. She has served as Associate General Counsel since 2001 and Corporate Secretary since 1987. She has worked for the Company since 1986.
Mr. Taylor was named Vice President, Investor Relations in 1999. Prior to this position, he served as Vice President, Corporate Communications since 1987. He has worked for the Company since 1986.
Mr. Willis was named Vice President, Corporate Services in 2000. Prior to this position, he served as Manager, Corporate Administration. He has worked for the Company since 1979.

All officers of Anadarko are elected in April of each year at an organizational meeting of the Board of Directors to hold office until their successors are duly elected and shall have qualified. There are no family relationships between any directors or executive officers of Anadarko.

26

PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

Information on the market price and cash dividends declared per share of common stock is included in the Stockholder Information in the Anadarko Petroleum Corporation 2002 Annual Report (Annual Report) which is incorporated herein by reference.
As of February 24, 2003, there were approximately 22,000 direct holders of Anadarko common stock. The following table sets forth the amount of dividends paid on Anadarko common stock during the two years ended December 31, 2002.

                                                        FIRST    SECOND     THIRD    FOURTH
                                                       QUARTER   QUARTER   QUARTER   QUARTER
millions                                               -------   -------   -------   -------
2002                                                   $   18    $   18    $   20    $   24
2001                                                   $   12    $   13    $   12    $   20

The amount of future common stock dividends will depend on earnings, financial condition, capital requirements and other factors, and will be determined by the Directors on a quarterly basis. For additional information, see Dividends under Item 7 of this Form 10-K.

Equity Compensation Plan Table The following table sets forth information with respect to the equity compensation plans available to directors, officers and employees of the Company as of December 31, 2002:

                                                                                      (C)
                                                                             NUMBER OF SECURITIES
                                         (A)                   (B)            REMAINING AVAILABLE
                                 NUMBER OF SECURITIES   WEIGHTED-AVERAGE      FOR FUTURE ISSUANCE
                                  TO BE ISSUED UPON     EXERCISE PRICE OF        UNDER EQUITY
                                     EXERCISE OF           OUTSTANDING        COMPENSATION PLANS
                                 OUTSTANDING OPTIONS,   OPTIONS, WARRANTS    (EXCLUDING SECURITIES
PLAN CATEGORY                    WARRANTS AND RIGHTS       AND RIGHTS       REFLECTED IN COLUMN(A))
-------------                    --------------------   -----------------   -----------------------
Equity compensation plans
  approved by security holders        15,328,369             $42.68                2,498,391
Equity compensation plans not
  approved by security holders                --                 --                       --
                                      ----------             ------                ---------
Total                                 15,328,369             $42.68                2,498,391

Unregistered Securities In March 2001, Anadarko issued $650 million of Zero Yield Puttable Contingent Debt Securities (ZYP-CODES) due 2021 to qualified institutional buyers under Rule 144A and non-U.S. persons under Regulation S. The initial purchaser of the ZYP-CODES was Lehman Brothers Inc. The ZYP-CODES were subsequently registered on a Form S-3 effective in July 2001.
In April 2001, Anadarko Finance Company, a wholly-owned finance subsidiary of Anadarko, issued $1.3 billion in notes to qualified institutional buyers under Rule 144A and non-U.S. persons under Regulation S. The initial purchaser was Credit Suisse First Boston Corporation. The notes were subsequently registered on a Form S-4 effective in July 2001.
For additional information, see Note 7 -- Debt of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

ITEM 6. SELECTED FINANCIAL DATA

See Five Year Financial Highlights in the Annual Report, which is incorporated herein by reference.

27

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FINANCIAL RESULTS

SELECTED FINANCIAL DATA

                                                               2002     2001     2000
millions except per share amounts                             ------   ------   ------
Revenues                                                      $3,860   $4,718   $2,911
Costs and expenses                                             2,435    5,081    1,559
Interest expense                                                 203       92       93
Other (income) expense                                            15      (65)    (167)
Net income (loss) available to common stockholders before
  cumulative effect of change in accounting principle         $  825   $ (183)  $  813
Net income (loss) available to common stockholders            $  825   $ (188)  $  796
Earnings (loss) per share -- before cumulative effect
  of change in accounting principle -- basic                  $ 3.32   $(0.73)  $ 4.42
Earnings (loss) per share -- before cumulative effect
  of change in accounting principle -- diluted                $ 3.21   $(0.73)  $ 4.25
Earnings (loss) per share -- basic                            $ 3.32   $(0.75)  $ 4.32
Earnings (loss) per share -- diluted                          $ 3.21   $(0.75)  $ 4.16

NET INCOME Anadarko's net income available to common stockholders for 2002 totaled $825 million, or $3.21 per share (diluted), compared to net loss available to common stockholders for 2001 of $188 million, or $0.75 per share (diluted). Net loss for 2001 includes non-cash charges of $2.5 billion ($1.6 billion after taxes) for impairments of the carrying value of oil and gas properties primarily in the United States, Canada and Argentina as a result of low natural gas and oil prices at the end of the third quarter of 2001. See Critical Accounting Policies. Anadarko had net income available to common stockholders in 2000 of $796 million or $4.16 per share (diluted).
In January 2002, the Company discontinued the amortization of goodwill in accordance with Statement of Financial Accounting Standards (SFAS) No. 142, "Goodwill and Other Intangible Assets." See Note 3 -- Goodwill in the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

REVENUES

                                                               2002     2001     2000
millions                                                      ------   ------   ------
Gas sales                                                     $1,835   $2,952   $1,615
Oil and condensate sales                                       1,690    1,397      946
Natural gas liquids sales                                        222      256      264
Other sales                                                      113      113       86
                                                              ------   ------   ------
Total                                                         $3,860   $4,718   $2,911
                                                              ------   ------   ------

During 2002, the Company adopted Emerging Issues Task Force (EITF) Issue No. 02-3, "Issues Involved in Accounting for Derivative Contracts Held for Trading Purposes and Contracts Involved in Energy Trading and Risk Management Activities." In accordance with EITF Issue No. 02-3, marketing sales and purchases resulting in physical settlement for prior periods have been reclassified to show net marketing margins as revenues. The marketing margins related to the Company's equity production are included in gas sales, oil and condensate sales and natural gas liquids (NGLs) sales and are reflected in commodity prices. The marketing margin related to purchases of third-party commodities is included in other sales. This reclassification had no effect on reported net income or cash flow.

28

Anadarko's total revenues for 2002 were down $858 million or 18% compared to total revenues in 2001 due primarily to a significant decrease in natural gas prices, as well as decreases in natural gas volumes, partially offset by higher crude oil prices and volumes.
Total revenues for 2001 increased $1.8 billion or 62% compared to 2000 due primarily to a significant increase in sales volumes, partially offset by a decrease in crude oil, condensate and NGLs prices.

ANALYSIS OF OIL AND GAS SALES VOLUMES

                                                              2002   2001   2000
                                                              ----   ----   ----
BARRELS OF OIL EQUIVALENT (MMBOE)
  United States                                               130    144     83
  Canada                                                       35     34     12
  Algeria                                                      24      8     10
  Other International                                           8     13      7
                                                              ---    ---    ---
  Total                                                       197    199    112
                                                              ---    ---    ---
BARRELS OF OIL EQUIVALENT PER DAY (MBOE/D)
  United States                                               355    394    226
  Canada                                                       97     93     34
  Algeria                                                      65     22     26
  Other International                                          22     37     20
                                                              ---    ---    ---
  Total                                                       539    546    306
                                                              ---    ---    ---


MMBOE -- million barrels of oil equivalent MBOE/d -- thousand barrels of oil equivalent per day

During 2002, Anadarko sold 197 MMBOE, a decrease of 2 MMBOE or 1% compared to sales of 199 MMBOE in 2001. The decrease in volumes for 2002 was primarily due to a decrease of 14 MMBOE due to operations in the United States, primarily offshore, and in Texas and Louisiana, and a decrease of 4 MMBOE related to the disposition of operations in Guatemala and Argentina in 2001. The decrease in volumes in the United States was primarily a result of natural production declines and a decrease in development drilling in late 2001 and early 2002 in response to lower commodity prices. These decreases were offset by an increase of 16 MMBOE in Algeria due to the expansion of production facilities. The Company's sales volumes were up 87 MMBOE or 78% in 2001 compared to 112 MMBOE in 2000. Approximately 70% of the increase in volumes during 2001 was due to a full year of operations in 2001 from properties acquired with the Anadarko Holding Company (Anadarko Holding) merger transaction in July 2000, compared to 5 1/2 months of operations in 2000. The remainder of the increase in volumes during 2001 was due primarily to increases of approximately 13 MMBOE from operations in the Gulf of Mexico, 7 MMBOE related to the acquisition of Berkley Petroleum Corp. (Berkley) in March 2001, 6 MMBOE from operations in the Bossier play in Texas and Louisiana and 5 MMBOE from operations in Alaska. Sales volumes represent actual production volumes adjusted for changes in commodity inventories. Anadarko employs marketing strategies to help manage volumes and mitigate the effect of price volatility, which is likely to continue in the future. See Derivative Instruments under Item 7a of this Form 10-K.

29

NATURAL GAS SALES VOLUMES AND AVERAGE PRICES

                                                               2002     2001    2000
                                                              ------   ------   -----
UNITED STATES (BCF)                                              507      573     338
  MMcf/d                                                       1,390    1,569     922
  Price per Mcf                                               $ 2.84   $ 4.23   $4.22
CANADA (BCF)                                                     135      121      46
  MMcf/d                                                         370      331     127
  Price per Mcf                                               $ 2.93   $ 4.38   $4.09
OTHER INTERNATIONAL (BCF)                                         --        1       1
  MMcf/d                                                          --        4       3
  Price per Mcf                                               $   --   $ 1.22   $1.08
TOTAL (BCF)                                                      642      695     385
  MMcf/d                                                       1,760    1,904   1,052
  Price per Mcf                                               $ 2.86   $ 4.25   $4.19


Bcf -- billion cubic feet
Mcf -- thousand cubic feet
MMcf/d -- million cubic feet per day

Anadarko's natural gas sales volumes in 2002 were down 53 Bcf or 8% compared to 2001. The decrease in volumes was due primarily to a decrease of 66 Bcf from operations within the United States, primarily offshore and in Texas, partially offset by an increase of 14 Bcf from operations in Canada primarily due to the Berkley acquisition in 2001. The Company's natural gas sales volumes for 2001 were up 310 Bcf or 81% compared to 2000. Approximately 70% of the increase in natural gas volumes during 2001 was due to a full year of production in 2001 from properties acquired with the Anadarko Holding merger transaction compared to 5 1/2 months of production in 2000. The remainder of the increase in volumes during 2001 was due primarily to increases of approximately 44 Bcf from operations in the Gulf of Mexico, 34 Bcf from the Bossier play in Texas and Louisiana and 29 Bcf related to the acquisition of Berkley in March 2001. Production of natural gas is generally not directly affected by seasonal swings in demand. However, the Company may decide during periods of low commodity prices to decrease development activity, which can result in decreased production volumes.
The Company's average natural gas price in 2002 decreased 33% compared to 2001. The decrease in prices during 2002 were attributed to a severe decline in natural gas demand as a result of high prices in early 2001, followed by a national economic downturn and mild summer weather in 2001. The Company's average natural gas price in 2001 was essentially flat compared to 2000. The higher natural gas prices realized in the first half of 2001 were offset by a decrease in natural gas prices in the second half of 2001. As of the end of January 2003, the Company had hedged 38% and 22% of the Company's natural gas production that is expected to be produced during 2003 and 2004, respectively. As a result, the remaining future natural gas volumes are subject to continued volatility based on fluctuations in market prices. See Derivative Instruments under Item 7a of this Form 10-K.

30

QUARTERLY NATURAL GAS SALES VOLUMES AND AVERAGE PRICES

                                                               2002     2001     2000
                                                              ------   ------   ------
FIRST QUARTER
  Bcf                                                            162      164       44
  MMcf/d                                                       1,805    1,822      486
  Price per Mcf                                               $ 2.26   $ 6.89   $ 2.63

SECOND QUARTER
  Bcf                                                            163      184       49
  MMcf/d                                                       1,791    2,018      536
  Price per Mcf                                               $ 3.05   $ 4.58   $ 3.39

THIRD QUARTER
  Bcf                                                            162      176      138
  MMcf/d                                                       1,764    1,913    1,498
  Price per Mcf                                               $ 2.64   $ 3.00   $ 3.86

FOURTH QUARTER
  Bcf                                                            155      171      154
  MMcf/d                                                       1,682    1,863    1,676
  Price per Mcf                                               $ 3.50   $ 2.63   $ 5.19

CRUDE OIL AND CONDENSATE SALES VOLUMES AND AVERAGE PRICES

                                                               2002     2001     2000
                                                              ------   ------   ------
UNITED STATES (MMBBLS)                                            31       34       15
  MBbls/d                                                         85       93       40
  Price per barrel                                            $23.07   $23.08   $28.59
CANADA (MMBBLS)                                                   12       13        4
  MBbls/d                                                         33       35       12
  Price per barrel                                            $19.31   $18.18   $27.33
ALGERIA (MMBBLS)                                                  24        8       10
  MBbls/d                                                         65       22       26
  Price per barrel                                            $24.38   $23.97   $28.73
OTHER INTERNATIONAL (MMBBLS)                                       8       13        7
  MBbls/d                                                         22       36       20
  Price per barrel                                            $19.92   $14.35   $18.35
TOTAL (MMBBLS)                                                    75       68       36
  MBbls/d                                                        205      186       98
  Price per barrel                                            $22.55   $20.56   $26.42


MMBbls -- million barrels
MBbls/d -- thousand barrels per day

Anadarko's crude oil and condensate sales volumes for 2002 increased 7 MMBbls or 10% compared to 2001. The increase was due primarily to an increase of approximately 16 MMBbls from operations in Algeria primarily due to the expansion of production facilities and an increase of 2 MMBbls due to the acquisition of producing properties in Qatar in 2001. These increases were partially offset by a decrease of 4 MMBbls related primarily to the sale of producing properties in Guatemala and Argentina in 2001, a decrease of 3 MMBbls related to operations in the United States, primarily offshore, and a decrease of 3 MMBbls related to operations in Venezuela primarily due to higher oil prices. See Critical Accounting Policies.

31

Crude oil and condensate sales volumes in 2001 increased 32 MMBbls or 89% compared to 2000. Approximately 65% of the increase in sales volumes during 2001 was due to a full year of operations in 2001 from properties acquired with the Anadarko Holding merger transaction compared to 5 1/2 months of operations in 2000. The remainder of the increase in crude oil and condensate sales volumes during 2001 was due primarily to increases of approximately 6 MMBbls from operations in the Gulf of Mexico, 5 MMBbls in Alaska and 2 MMBbls related to the acquisition of Berkley in March 2001. Production of oil usually is not affected by seasonal swings in demand or in market prices.
The Company's average realized crude oil price in 2002 increased 10% compared to 2001. The increase in crude oil prices in 2002 was due primarily to continued uncertainty of the situation in the middle east, the oil workers strike in Venezuela and a colder than normal winter late in 2002 which increased oil demand in the United States. Anadarko's average realized crude oil prices for 2001 decreased 22% compared to 2000. The decrease in crude oil prices during 2001 is attributed primarily to a modest increase in supply and very slow growth in demand due to a worldwide economic downturn and a sharp decline in jet fuel consumption. As of the end of January 2003, the Company had hedged 35% and 3% of the Company's crude oil production that is expected to be produced during 2003 and 2004, respectively. As a result, the remaining future oil and condensate volumes are subject to continued volatility based on fluctuations in market prices.

QUARTERLY CRUDE OIL AND CONDENSATE SALES VOLUMES AND AVERAGE PRICES

                                                               2002     2001     2000
                                                              ------   ------   ------
FIRST QUARTER
  MMBbls                                                          19       17        4
  MBbls/d                                                        212      186       49
  Price per barrel                                            $18.54   $21.92   $26.36

SECOND QUARTER
  MMBbls                                                          19       18        3
  MBbls/d                                                        205      192       38
  Price per barrel                                            $22.57   $21.61   $26.99

THIRD QUARTER
  MMBbls                                                          18       18       13
  MBbls/d                                                        191      192      141
  Price per barrel                                            $24.50   $21.82   $27.53

FOURTH QUARTER
  MMBbls                                                          20       16       15
  MBbls/d                                                        214      175      161
  Price per barrel                                            $24.67   $16.64   $25.33

NATURAL GAS LIQUIDS SALES VOLUMES AND AVERAGE PRICES

                                                               2002     2001     2000
                                                              ------   ------   ------
TOTAL (MMBBLS)                                                    15       15       12
  MBbls/d                                                         41       42       33
  Price per barrel                                            $14.80   $16.55   $21.70

The Company's NGLs sales volumes in 2002 were essentially flat compared to 2001. NGLs sales volumes in 2001 increased 25% compared to 2000 primarily due to the increase in natural gas sales volumes. The 2002 average NGLs prices decreased 11% compared to 2001. High levels of NGLs inventories in the United States during the first half of 2002, coupled with lower demand for NGLs by the petrochemical industry, have caused NGLs prices to decline. The 2001 average NGLs prices decreased 24% compared to 2000 due primarily to a decrease in demand. NGLs production is dependent on natural gas prices and the economics of processing the natural gas volumes to extract NGLs.

32

COSTS AND EXPENSES

                                                               2002     2001     2000
millions                                                      ------   ------   ------
Operating expenses                                            $  747   $  769   $  487
Administrative and general                                       314      292      270
Depreciation, depletion and amortization                       1,121    1,154      593
Other taxes                                                      214      247      128
Impairments related to oil and gas properties                     39    2,546       50
Amortization of goodwill                                          --       73       31
                                                              ------   ------   ------
Total                                                         $2,435   $5,081   $1,559
                                                              ------   ------   ------

During 2002, Anadarko's costs and expenses decreased $2.6 billion or 52% compared to 2001 due to the following factors:
-- Operating expenses decreased $22 million (3%) primarily due to a decrease in costs associated with processing NGLs.
-- Administrative and general expenses increased $22 million (8%). An increase of $58 million due primarily to increases in benefits and salaries expenses associated with the Company's growing workforce was partially offset by a $31 million decrease in merger related expenses and a $5 million decrease related to an adjustment to provisions for doubtful accounts.
-- Depreciation, depletion and amortization (DD&A) expense decreased $33 million (3%). The decrease is due primarily to a lower DD&A rate for oil and gas properties in 2002 as a result of ceiling test impairments in the third quarter of 2001 and a decrease related to slightly lower production volumes in 2002.
-- Other taxes decreased $33 million (13%). The decrease is primarily due to a decrease in production taxes as a result of lower commodity prices and slightly lower production volumes in 2002.
-- Impairments in 2002 relate primarily to oil and gas properties in Congo ($16 million), Oman ($10 million), Australia ($7 million) and Tunisia ($5 million) primarily due to unsuccessful exploration activities. -- Amortization of goodwill was discontinued in 2002 in accordance with SFAS No. 142.
During 2001, Anadarko's costs and expenses increased $3.5 billion or 226% compared to 2000 due to the following factors:
-- Operating expenses increased $282 million (58%) primarily due to a significant increase in the number of producing wells as a result of mergers and acquisitions in 2000 and 2001 and significant development activity in the Gulf of Mexico, Alaska and the Bossier play in east Texas and Louisiana. Operating expenses were also impacted by an increase in oil field service costs.
-- Administrative and general expenses increased $22 million (8%). An increase of $67 million due primarily to the Company's expanded workforce resulting from the Anadarko Holding merger transaction in mid-2000 and higher costs associated with the Company's growing workforce was partially offset by a decrease in provisions for doubtful accounts of $23 million and a $22 million decrease in merger related expenses.
-- DD&A expense increased $561 million (95%). About 80% of the increase was due to the increase in volumes as a result of mergers and acquisitions in 2000 and 2001 and significant development activity. The remaining increase is due to increases in the DD&A rate, which is also due to the merger and acquisitions.
-- Other taxes increased $119 million (93%). Approximately 50% of the increase was due to an increase in ad valorem taxes as a result of the significant increase in properties as a result of the merger and acquisitions. The remainder of the increase is primarily due to an increase in production taxes as a result of the increase in volumes. -- Impairments in 2001 were due to low oil and gas prices at the end of the third quarter of 2001, which resulted in ceiling test impairments for the United States ($1.7 billion), Canada ($808 million), Argentina ($15 million) and Brazil ($4 million), as well as unsuccessful exploration activities in the United Kingdom ($11 million) and Ghana ($7 million). -- Amortization of goodwill increased $42 million due to the Anadarko Holding merger transaction in mid-2000 ($32 million) and the Berkley acquisition in 2001 ($10 million).

33

INTEREST EXPENSE

                                                              2002    2001    2000
millions                                                      -----   -----   -----
Gross interest expense                                        $ 358   $ 301   $ 193
Capitalized interest                                           (155)   (209)   (100)
                                                              -----   -----   -----
Net interest expense                                          $ 203   $  92   $  93
                                                              -----   -----   -----

Anadarko's gross interest expense has increased over the past three years due primarily to the Anadarko Holding merger transaction in mid-2000 and the Berkley acquisition in 2001 as well as higher levels of borrowings for capital expenditures, including producing property acquisitions. Gross interest expense in 2002 increased 19% compared to 2001 primarily due to higher average debt outstanding in 2002 primarily because of acquisitions in 2001 and slightly higher interest rates. Gross interest expense in 2001 increased 56% compared to 2000 primarily due to the Anadarko Holding merger transaction in mid-2000 and the Berkley acquisition in 2001 which resulted in higher average borrowings during 2001. See Capital Resources and Liquidity and Outlook on Liquidity.
In 2002, capitalized interest decreased by 26% compared to 2001 primarily due to a decrease in capitalized costs that qualify for interest capitalization. In 2001, capitalized interest increased by 109% compared to 2000 primarily due to an increase in costs that qualify for interest capitalization related to the Anadarko Holding merger transaction in mid-2000 and the Berkley acquisition in 2001. For additional information about the Company's policies regarding costs excluded and capitalized interest see Critical Accounting Policies -- Costs Excluded and Capitalized Interest.

OTHER (INCOME) EXPENSE

                                                              2002    2001    2000
millions                                                      -----   -----   -----
Firm transportation keep-whole contract valuation             $(35)   $(91)   $(175)
Unrealized (gain) loss on derivative instruments                33     (18)      --
Gas sales contracts -- accretion of discount                    11      14       --
Foreign currency exchange                                        1      29        7
Other                                                            5       1        1
                                                              ----    ----    -----
Total                                                         $ 15    $(65)   $(167)
                                                              ----    ----    -----

Other income in 2002 decreased $80 million compared to 2001 due primarily to a $56 million decrease in income related to the effect of lower market values for firm transportation subject to a keep-whole agreement and a $51 million decrease related to unrealized (gain) loss on derivative instruments due to increased commodity prices and hedging activity, partially offset by a $28 million decrease in foreign currency exchange losses primarily due to the restructuring of Canadian debt and changes in the Canadian exchange rate. Other income in 2001 decreased $102 million compared to the same period of 2000 due primarily to an $84 million decrease related to the effect of significantly lower market value for firm transportation subject to a keep-whole agreement and a $22 million increase in foreign currency exchange losses primarily due to changes in the Canadian exchange rates. See Derivative Instruments and Foreign Currency Risk under Item 7a of this Form 10-K.

INCOME TAX EXPENSE (BENEFIT)

                                                              2002   2001    2000
millions                                                      ----   -----   ----
Income tax expense (benefit)                                  $376   $(214)  $602

For 2002, income taxes increased $590 million compared to 2001. Income taxes for 2001 decreased $816 million compared to 2000. Income taxes for 2001 include a benefit of approximately $962 million related to the impairment of the carrying value of oil and gas properties in the United States, Canada and Argentina as a result of low natural gas and crude oil prices at the end of the third quarter of 2001.
Excluding the effect of the impairment and related tax benefit in 2001, income taxes for 2002 decreased primarily due to the decrease in earnings before income taxes. Excluding the effect of the impairment and the

34

related tax benefit in 2001, the increase in 2001 income taxes compared to 2000 was primarily due to the increase in earnings before income taxes.
The effective tax rate for 2002, 2001 and 2000 was 31%, 55% and 42%, respectively. The variances in the effective tax rate for 2002 and 2000 from the statutory rate of 35% were due primarily to changes in income taxes related to foreign operations. The effective tax rate for 2001 was 35%, excluding the effect of the impairment and the related tax benefit.

MARKETING STRATEGIES

OVERVIEW The Company's sales of natural gas, crude oil, condensate and NGLs are generally made at the market prices of those products at the time of sale. Therefore, even though the Company sells significant volumes to major purchasers, the Company believes other purchasers would be willing to buy the Company's natural gas, crude oil, condensate and NGLs at comparable market prices. The Company's marketing department actively manages sales of its oil and gas through Anadarko Energy Services Company (AES), Anadarko, Anadarko Canada Corporation and Anadarko Holding. The Company markets its production to customers at competitive prices, maximizing realized prices while managing credit exposure. The market knowledge gained through the marketing effort is valuable to the corporate decision making process.
The Company also conducts trading activities for the purpose of generating profits on or from exposure to changes in market prices of gas, oil, condensate and NGLs. However, the Company does not engage in market-making practices nor does it trade in any non-energy-related commodities. The Company's trading risk position, typically, is a net short position that is offset by the Company's natural long position as a producer. The Company's marketing function does not engage in round-trip trades or participate in any marketing-related partnerships. Essentially all of the Company's trading transactions have a term of less than one year and most are less than three months. See Derivative Instruments under Item 7a of this Form 10-K.
During 2002, all segments of the natural gas market experienced increased scrutiny of their financial condition, liquidity and credit. This has been reflected in rating agency credit downgrades of many merchant energy trading companies. In 2002, Anadarko has not experienced any material financial losses associated with credit deterioration of third-party gas purchasers; however, in certain situations the Company has declined to transact with some counterparties and changed its sales terms to require some counterparties to pay in advance or post letters of credit.

NATURAL GAS The North American natural gas market has grown significantly throughout the last 10 years and management believes continued growth to be likely. Natural gas prices have been extremely volatile and are expected to continue to be so. Management believes the Company's portfolio of exploration and development prospects should position Anadarko to continue to participate in this growth. AES is a full-service marketing company offering supply assurance, competitive pricing, risk management services and other services tailored to its customers' needs. Approximately 40% of the Company's gas production was sold through AES in 2002. The Company also purchases some physical volumes for resale primarily from partners and producers near Anadarko's production. These purchases allow the Company to aggregate larger volumes of gas and attract larger, creditworthy customers, which in turn enhances the value of the Company's production. The Company sells natural gas under a variety of contracts and may also receive a service fee related to the level of reliability and service required by the customer. The Company has the marketing capability to move large volumes of gas into and out of the "daily" gas market to take advantage of any price volatility. Included in this strategy is the use of leased natural gas storage facilities and various derivative instruments.
Anadarko Holding was a party to several long-term firm gas transportation agreements that supported the gas marketing program within the gathering, processing and marketing (GPM) business segment, which was sold in 1999 to Duke Energy (Duke). Most of the GPM's firm long-term transportation contracts were transferred to Duke in the GPM disposition. One contract was retained, but is managed and operated by Duke. Anadarko is not responsible for the operations of the contracts and does not utilize the associated transportation assets to transport the Company's natural gas. As part of the GPM disposition, Anadarko Holding agreed to pay Duke if transportation market values fall below the fixed contract transportation rates, while Duke will pay Anadarko Holding if the transportation market values exceed the contract transportation rates (keep-whole agreement). The fair value of the short-term portion of the firm transportation keep-whole agreement is calculated with actively quoted natural gas basis prices. Basis is the difference in value between gas at various delivery points and the

35

New York Mercantile Exchange (NYMEX) gas futures contract price. Management believes that natural gas basis price quotes beyond the next twelve months are not reliable indicators of fair value due to decreasing liquidity. Accordingly, the fair value of the long-term portion is estimated based on historical natural gas basis prices, discounted at 10% per year. Management also periodically evaluates the supply and demand factors (such as expected drilling activity, anticipated pipeline construction projects, expected changes in demand at pipeline delivery points) that may impact the future market value of the firm transportation capacity to determine if the estimated fair value should be adjusted.
In 2002, 2001 and 2000, approximately 29%, 31% and 56%, respectively, of the Company's gas production was sold under long-term contracts to Duke. These sales represent 13%, 21% and 24%, respectively, of total revenues in 2002, 2001 and 2000. Most of the Company's gas production sold to Duke is under a single agreement that expires at the end of the first quarter of 2004. Volumes sold to Duke under this contract may be delivered at a number of locations generally at the tailgate of processing facilities owned or operated by Duke or its affiliates and typically in the general vicinity of the fields where produced. The pricing of gas under this contract is market based and therefore varies monthly and by region.

CRUDE OIL, CONDENSATE AND NGLS Anadarko's crude oil, condensate and NGLs revenues are derived from production in the U.S., Canada, Algeria and other international areas. Most of the Company's U.S. crude oil and NGLs production is sold under 30-day "evergreen" contracts with prices based on marketing indices and adjusted for location, quality and transportation. Most of the Company's Canadian oil production is sold on a term basis of one year or greater. Oil from Algeria is sold by tanker as Saharan Blend to customers primarily in the Mediterranean area. Saharan Blend is a high quality crude that provides refiners with large quantities of premium products like high quality jet and diesel fuel. AES purchases and sells third-party crude oil, condensate and NGLs in the Company's domestic and international market areas. Included in this strategy is the use of various derivative instruments.

GAS GATHERING SYSTEMS AND PROCESSING Anadarko's investment in gas gathering operations allows the Company to better manage its gas production, improve ultimate recovery of reserves, enhance the value of gas production and expand marketing opportunities. The Company has invested $162 million to build or acquire gas gathering systems over the last five years. The vast majority of the gas flowing through these systems is from Anadarko operated wells.
The Company processes gas at various third-party plants under agreements generally structured to provide for the extraction and sale of NGLs in efficient plants with flexible commitments. Anadarko also processes gas and has interests in one operated plant and three non-operated plants. Anadarko's strategy to aggregate gas through Company-owned and third-party gathering systems allows Anadarko to secure processing arrangements in each of the regions where the Company has significant production.

MARKETING CONTRACTS The following schedules provide additional information regarding the Company's marketing and trading portfolio of physical and derivative contracts and the firm transportation keep-whole agreement and related derivatives as of December 31, 2002. The Company records income or loss on these activities using the mark-to-market method. See Critical Accounting Policies for an explanation of how the fair value for derivatives are calculated.

                                                                             FIRM
                                                           MARKETING    TRANSPORTATION
                                                          AND TRADING     KEEP-WHOLE     TOTAL
millions                                                  -----------   --------------   -----
Fair value of contracts outstanding as of December 31,
  2001                                                        $17            $(82)       $(65)
Contracts realized or otherwise settled during 2002            15             (26)        (11)
Fair value of new contracts when entered into during
  2002                                                          7              --           7
Other changes in fair value                                   (44)             35          (9)
                                                              ---            ----        ----
Fair value of contracts outstanding as of December 31,
  2002                                                        $(5)           $(73)       $(78)
                                                              ---            ----        ----

36

                                              FAIR VALUE OF CONTRACTS AS OF DECEMBER 31, 2002
                                           ------------------------------------------------------
                                           MATURITY                             MATURITY
                                           LESS THAN   MATURITY    MATURITY    IN EXCESS
ASSETS (LIABILITIES)                        1 YEAR     1-3 YEARS   4-5 YEARS   OF 5 YEARS   TOTAL
millions                                   ---------   ---------   ---------   ----------   -----
MARKETING AND TRADING
  Prices actively quoted                     $  (4)      $ --        $ --        $   --     $ (4)
  Prices based on models and other
     valuation methods                          (1)        --          --            --       (1)
FIRM TRANSPORTATION KEEP-WHOLE
  Prices actively quoted                     $  (5)      $ --        $ --        $   --     $ (5)
  Prices based on models and other
     valuation methods                          --        (40)        (23)           (5)     (68)
TOTAL
  Prices actively quoted                     $  (9)      $ --        $ --        $   --     $ (9)
  Prices based on models and other
     valuation methods                          (1)       (40)        (23)           (5)     (69)

OPERATING RESULTS

DRILLING ACTIVITY During 2002, Anadarko participated in a total of 949 gross wells, including 686 gas wells, 217 oil wells and 46 dry holes. This compares to 1,420 gross wells (970 gas wells, 375 oil wells and 75 dry holes) in 2001 and 709 gross wells (385 gas wells, 269 oil wells and 55 dry holes) in 2000. The decrease in activity during 2002 reflects the Company's reduced spending for development drilling in response to lower commodity prices in late 2001 and early 2002. The increase in activity during 2001 was a result of mergers and acquisitions in 2001 and 2000 and improved commodity prices at the beginning of 2001.
The Company's 2002 exploration and development drilling program is discussed in Oil and Gas Properties and Activities under Item 1 of this Form 10-K.

DRILLING PROGRAM ACTIVITY

                                                               GAS     OIL    DRY    TOTAL
                                                              -----   -----   ----   -----
2002 EXPLORATORY
  Gross                                                          58      24     32     114
  Net                                                          45.2    19.9   25.3    90.4
2002 DEVELOPMENT
  Gross                                                         628     193     14     835
  Net                                                         444.2   147.6   10.7   602.5
2001 EXPLORATORY
  Gross                                                          47      35     40     122
  Net                                                          35.6    26.0   27.0    88.6
2001 DEVELOPMENT
  Gross                                                         923     340     35   1,298
  Net                                                         677.5   262.5   26.6   966.6


Gross: total wells in which there was participation. Net: working interest ownership.

37

RESERVE REPLACEMENT Drilling activity is not the best measure of success for an exploration and production company. Anadarko focuses on growth, and profitability. Reserve replacement is the key to growth, and future profitability depends on the cost of finding oil and gas reserves, among other factors. For the 21st consecutive year, Anadarko more than replaced annual production volumes with proved reserves of natural gas, crude oil, condensate and NGLs, stated on a barrel of oil equivalent (BOE) basis.
During 2002, Anadarko's worldwide reserve replacement was 112% of total production of 196 MMBOE. The Company's worldwide reserve replacement in 2001 was 221% of total production of 201 MMBOE. The Company's worldwide reserve replacement in 2000 was 1,059% of total production of 112 MMBOE. Over the last five years, the Company's annual reserve replacement has averaged 368% of annual production volumes.
Excluding mergers, acquisitions and divestitures, Anadarko's worldwide reserve replacement for 2002 was 87% of total production compared to 173% for 2001 and 231% for 2000. The decrease in 2002 was partially due to a downward price revision of 36 MMBOE in Venezuela. See Critical Accounting Policies. Excluding mergers, acquisitions and divestitures, the Company's annual worldwide reserve replacement over the past five years averaged 187% of annual production volumes.
Anadarko continues to increase its energy reserves in the U.S. In 2002, the Company replaced 185% of its U.S. production volumes with U.S. reserves. This compares to a U.S. reserve replacement of 161% in 2001 and 855% in 2000. The Company's U.S. reserve replacement for the five-year period 1998-2002 was 325% of production. Excluding mergers, acquisitions and divestitures, Anadarko's U.S. reserve replacement for 2002, 2001 and 2000 was 137%, 160% and 207%, respectively, of total production. The Company's U.S. reserve replacement for the five-year period 1998-2002 was 179% excluding mergers, acquisitions and divestitures. By comparison, the most recent published U.S. industry average (1997-2001) was 111% (Source: U.S. Department of Energy). Anadarko's U.S. reserve replacement performance for the same period of 1997-2001 was 360% of production or 195% of production, excluding mergers, acquisitions and divestitures. Industry data for 2002 are not yet available.

COST OF FINDING Cost of finding represents the cost of proved reserves added during a specific period through all means, including all costs and reserve additions related to extensions and discoveries, revisions, improved recovery and purchases of proved reserves. Cost of finding results in any one year can be misleading due to the long lead times associated with exploration and development. A better measure of cost of finding performance is over a five-year period.
For the period 1998-2002, Anadarko's worldwide finding cost was $7.24 per BOE. The Company's U.S. finding cost for the same five-year period was $7.78 per BOE. Excluding mergers and acquisitions, Anadarko's worldwide and U.S. finding costs for the five-year period 1998-2002 were $7.23 per BOE and $7.44 per BOE, respectively. For the five-year period 1997-2001, Anadarko's worldwide finding cost was $6.66 per BOE and its U.S. finding cost was $7.58 per BOE. For the five-year period 1997-2001, the Company's worldwide and U.S. finding costs excluding mergers and acquisitions were $5.88 per BOE and $6.78 per BOE, respectively.
For 2002, Anadarko's worldwide finding cost was $10.52 per BOE. This compares to $8.53 per BOE in 2001 and $7.19 per BOE in 2000. Anadarko's U.S. finding cost for 2002 was $7.77 per BOE. This compares to $9.60 per BOE in 2001 and $8.49 per BOE in 2000. Excluding mergers and acquisitions, Anadarko's worldwide finding cost for 2002 was $13.43 per BOE compared to $8.75 per BOE in 2001 and $5.83 per BOE in 2000. The Company's U.S. finding cost excluding mergers and acquisitions for 2002 was $8.83 per BOE compared to $9.46 per BOE in 2001 and $6.77 per BOE in 2000. Worldwide finding costs in 2002 increased compared to 2001 due primarily to downward revisions of Venezuelan reserves primarily related to higher prices (see Critical Accounting Policies) and large investments made in leases in the eastern Gulf of Mexico that have not yet been drilled. Finding costs in 2001 were higher than 2000 due primarily to increases in oilfield services costs and increased exploration and development activity.

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PROVED RESERVES At the end of 2002 and 2001, Anadarko's proved reserves were 2.3 billion BOE compared to 2.1 billion BOE at year-end 2000. Anadarko's proved reserves have grown 135% over the past three years, primarily as a result of corporate acquisitions, successful exploration projects in the Gulf of Mexico and successful development drilling programs in major domestic fields in core areas onshore and offshore and in Algeria.
The Company's proved natural gas reserves at year-end 2002 were 7.2 trillion cubic feet (Tcf) compared to 7.0 Tcf at year-end 2001 and 6.1 Tcf at year-end 2000. Anadarko's proved gas reserves have increased 186% since year-end 1999, as a result of corporate acquisitions, continued development activity onshore in the U.S. and other producing property acquisitions. Anadarko's crude oil, condensate and NGLs reserves at year-end 2002 were 1.1 billion barrels compared to 1.1 billion barrels at year-end 2001 and 1.0 billion barrels at year-end 2000. Crude oil reserves have risen by 97% over the last three years primarily due to corporate acquisitions, successful exploration projects in the Gulf of Mexico and successful development drilling programs in major domestic fields in core areas onshore and offshore and in Algeria. Crude oil, condensate and NGLs reserves comprise 49% of the Company's proved reserves at year-end 2002 and 2001 and 51% at year-end 2000.
At December 31, 2002, the present value (discounted at 10%) of future net revenues from Anadarko's proved reserves was $21.1 billion, before income taxes, and $14.1 billion, after income taxes, (stated in accordance with the regulations of the Securities and Exchange Commission (SEC) and the Financial Accounting Standards Board (FASB). This present value was calculated based on prices at year-end held flat for the life of the reserves, adjusted for any contractual provisions. The after income taxes increase of $6.1 billion or 76% in 2002 compared to 2001 is primarily due to significantly higher natural gas and higher crude oil prices at year-end 2002, additions of proved reserves related to successful drilling worldwide and corporate acquisitions in 2002. See Critical Accounting Policies and New Accounting Principles and Recent Developments under Item 7 and Supplemental Information on Oil and Gas Exploration and Production Activities -- Unaudited in the Consolidated Financial Statements under Item 8 of this Form 10-K.
The present value of future net revenues does not purport to be an estimate of the fair market value of Anadarko's proved reserves. An estimate of fair value would also take into account, among other things, anticipated changes in future prices and costs, the expected recovery of reserves in excess of proved reserves and a discount factor more representative of the time value of money and the risks inherent in producing oil and gas.

ACQUISITIONS AND DIVESTITURES

The Company's strategy includes an asset acquisition and divestiture program. In 2002, Anadarko acquired approximately 87 MMBOE of proved reserves, including 74 MMBOE located in the United States primarily from the Howell Corporation (Howell) acquisition (64 MMBOE) and including 13 MMBOE located in Qatar. In 2001, the Company acquired approximately 157 MMBOE of proved reserves, located in: Canada, primarily from the Berkley acquisition (99 MMBOE); Qatar and Oman with the Gulfstream Resources Canada Limited (Gulfstream) acquisition (57 MMBOE); and the United States (1 MMBOE). In 2000, Anadarko acquired with the Anadarko Holding merger transaction approximately 912 MMBOE of proved reserves, located primarily in the United States, Canada and Latin America. Excluding corporate acquisitions, during 2000-2002, Anadarko acquired through purchases and trades 38 MMBOE of proved reserves for $112 million. During the same time period, the Company sold properties, either as a strategic exit from a certain area or asset rationalization in existing core areas, of 100 MMBOE with proceeds totaling $397 million. In 2003, the Company will continue to consider dispositions of certain producing properties in non-core areas.

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PROPERTIES AND LEASES

PRODUCING PROPERTIES The Company owns 9,232 net producing gas wells and 7,011 net producing oil wells worldwide. The following schedule shows the number of developed and undeveloped lease acres in which Anadarko held interests at December 31, 2002.

ACREAGE

                                               DEVELOPED       UNDEVELOPED          TOTAL
                                             -------------   ---------------   ---------------
                                             GROSS    NET    GROSS     NET     GROSS     NET
thousands                                    -----   -----   ------   ------   ------   ------
United States
  Onshore -- Lower 48                        2,900   1,959    2,642    1,904    5,542    3,863
  Offshore                                    441      204    1,486    1,129    1,927    1,333
  Alaska                                       25        6    3,144    1,162    3,169    1,168
                                             -----   -----   ------   ------   ------   ------
Total                                        3,366   2,169    7,272    4,195   10,638    6,364
                                             -----   -----   ------   ------   ------   ------
Canada                                       1,811   1,024    9,357    3,343   11,168    4,367
Algeria*                                      219       54    3,775    1,167    3,994    1,221
Other International                           570      155   24,896   10,435   25,466   10,590


* Developed acreage in Algeria relates only to areas with an Exploitation License. A portion of the undeveloped acreage in Algeria will be relinquished in the future upon finalization of Exploitation License boundaries.

LAND GRANT AND OTHER FEE MINERALS The Company also owns fee mineral interests on acreage totaling 10,159,000 (gross) or 9,101,000 (net) acres as of December 31, 2002. Of this amount, 7,933,000 (gross) or 7,741,000 (net) acres are within the Company's Land Grant area in Wyoming, Colorado and Utah, which was granted by the federal government to a predecessor of Anadarko Holding in the mid-1800s. The Company holds royalty interests of varying percentages throughout the Land Grant that are subject to exploration and production agreements with third-parties. The Company's fee mineral acreage is primarily undeveloped.

CAPITAL RESOURCES AND LIQUIDITY

CAPITAL EXPENDITURES*

                                                               2002     2001     2000
millions                                                      ------   ------   ------
Development                                                   $1,079   $1,641   $  921
Exploration                                                      866    1,030      429
Acquisitions of producing properties                              14       14       54
Gathering and other                                               78      244       80
Capitalized interest and internal costs related to
  exploration
  and development costs                                          351      387      224
                                                              ------   ------   ------
Total                                                         $2,388   $3,316   $1,708
                                                              ------   ------   ------


* Excludes corporate acquisitions

The Company's primary focus for 2002 was to find additional oil and gas reserves and maintain Company-wide production. Anadarko's total capital spending in 2002 was $2.4 billion, a 28% decrease compared to 2001. The decrease from 2001 represents a $562 million decrease in development spending, a $164 million decrease in exploration and a $202 million decrease in gathering and other spending. The decrease in spending for development activities reflects the Company's decision to focus on increasing its inventory of drilling prospects by identifying new reserves through exploration, rather than growing production through development during the down cycle for energy prices earlier in the year.
Anadarko's total capital spending in 2001 was $3.3 billion, a 94% increase compared to 2000. The increase from 2000 represents a $720 million increase in development spending, a $601 million increase in exploration spending and a $287 million increase in spending primarily for general properties and capitalized interest. The

40

development spending increase was primarily in the Lower 48 states, while the exploration spending increase was primarily in the Gulf of Mexico and the Lower 48 states.
The Company funded its capital investment programs in 2002, 2001 and 2000 primarily through cash flow, plus increases in long-term debt, proceeds from property sales and issuances of common stock.
Capital spending for 2003 has been initially set at $2.3 billion, which is a slight decrease compared to 2002. The primary focus of the 2003 budget is to find additional oil and gas reserves and develop existing fields. Anadarko has allocated nearly $1.5 billion to worldwide development projects, primarily for fields in the Gulf of Mexico, western Canada, east and central Texas, north Louisiana, the western states and Algeria. Approximately $380 million is budgeted for exploration programs, mainly in western Canada, the Gulf of Mexico, east Texas, north Louisiana and Alaska. About 70% of the exploration budget will be for drilling compared to 53% in 2002. The remainder of the exploration budget will be used for seismic and lease acquisitions. See Outlook on Liquidity for a discussion of the sources of funds for capital spending.

DEBT At year-end 2002, Anadarko's total debt was $5.5 billion. This compares to total debt of $5.1 billion at year-end 2001 and $4.0 billion at year-end 2000. The increases in debt are related primarily to the Howell acquisition in 2002 and the Berkley and Gulfstream acquisitions in 2001.
In March 2001, Anadarko issued $650 million of Zero Yield Puttable Contingent Debt Securities (ZYP-CODES) due 2021. In March 2002, ZYP-CODES in the amount of $620 million were put to the Company for repayment and were paid in cash. Holders of the remaining ZYP-CODES have the right to require Anadarko to purchase all or a portion of their ZYP-CODES in March 2004, 2006, 2011 or 2016, at $1,000 per ZYP-CODES.
In February 2002, the Company issued $650 million principal amount of 5 3/8% Notes due 2007. In March 2002, the Company issued $400 million principal amount of 6 1/8% Notes due 2012. The net proceeds from these issuances were used to reduce floating rate debt and to fund a portion of the ZYP-CODES put to the Company for repayment in March 2002.
In April 2002, Anadarko filed a shelf registration statement with the SEC that permits the issuance of up to $1 billion in debt securities, preferred stock, preferred securities, depositary shares, common stock, warrants, purchase contracts and purchase units. Net proceeds, terms and pricing of the offerings of securities issued under the shelf registration statement will be determined at the time of the offerings.
In September 2002, Anadarko issued $300 million principal amount of 5% Notes due 2012. The net proceeds from the issuance were used to reduce floating rate debt. These notes were issued under the shelf registration statement filed in April 2002.
In October 2002, the Company entered into a 364-Day Revolving Credit Agreement. The agreement provides for $225 million principal amount and expires in 2003. Also in October 2002, Anadarko Canada Corporation, a wholly owned subsidiary of Anadarko, entered into a 364-Day Canadian Credit Agreement. The agreement provides for $300 million principal amount and expires in 2003. The Canadian agreement is fully and unconditionally guaranteed by Anadarko. In addition, the Company has a Revolving Credit Agreement that provides for $225 million principal amount and expires in 2004. As of December 31, 2002, the Company had no outstanding borrowings under these credit agreements.

PREFERRED STOCK During 2002 and 2001, Anadarko repurchased $2 million and $97 million of preferred stock, respectively.

COMMON STOCK PURCHASE PROGRAM In 2001, the Board of Directors authorized the Company to purchase up to $1 billion in shares of Anadarko common stock. The share purchases may be made from time to time, depending on market conditions. Shares may be purchased either in the open market or through privately negotiated transactions. The repurchase program does not obligate Anadarko to acquire any specific number of shares and may be discontinued at any time.
During 2002 and 2001 in conjunction with the stock purchase program, Anadarko sold put options to independent third parties. These put options entitled the holder to sell shares of Anadarko common stock to the Company on certain dates at specified prices. During 2001, Anadarko sold put options for the purchase of a total of 5 million shares of Anadarko common stock with a notional amount of $240 million. A put option for 1 million shares was exercised and put options for 2 million shares expired unexercised in 2001. Put options for the remaining 2 million shares expired unexercised in 2002. In 2002, the Company entered into a put option for 1 million shares of Anadarko common stock with a notional amount of $46 million. The Company received

41

premiums of $7 million during 2002. This put option expired unexercised in 2002. The put options permitted a net-share settlement at the Company's option and did not result in a liability on the consolidated balance sheet.
The following table summarizes purchases under the stock purchase program and the effect of the related put option premiums on the repurchase price.

                                                                                 TOTAL
                                                               2002     2001    PROGRAM
millions, except per share amounts                            ------   ------   -------
Shares repurchased                                               1.0      2.2      3.2
Total paid for shares repurchased                             $   50   $  116   $  166
Put premiums settled                                             (14)      (7)     (21)
                                                              ------   ------   ------
Total repurchase price                                        $   36   $  109   $  145
                                                              ------   ------   ------
Average repurchase price per share                            $36.08   $49.41   $45.24

OBLIGATIONS AND COMMITMENTS

Following is a summary of the Company's future payments on obligations as of December 31, 2002.

                                                              OBLIGATIONS BY PERIOD
                                                     ----------------------------------------
                                                               2-3     4-5    LATER
                                                     1 YEAR   YEARS   YEARS   YEARS    TOTAL
millions                                             ------   -----   -----   ------   ------
Total debt*                                           $300    $200    $912    $4,207   $5,619
Operating leases                                        72     122     105       208      507
Transportation and storage                               5      39      28       124      196
Oil and gas activities                                  --     100       5        --      105


* Holders of the Zero Coupon Convertible Debentures due 2020 had the right to put the debentures to the Company in March 2003 at the accrued value of $383 million. This debt instrument has been reflected in later years in the table above. Holders of the ZYP-CODES due 2021 may put the remaining $30 million principal amount of the ZYP-CODES to the Company in 2004.

SYNTHETIC LEASES Anadarko has two lease arrangements for its corporate office buildings in The Woodlands, Texas. The development and acquisition of the properties were financed by special purpose entities (SPEs) sponsored by a financial institution. The total amount funded under these leases was $213 million. In addition, the Company has a total lease payment obligation of $11 million related to aircraft operating leases financed by synthetic leases. The table above includes lease payment obligations related to these synthetic leases under operating leases. For additional information see Note 17 -- Commitments of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

OIL AND GAS ACTIVITIES As is common in the oil and gas industry, Anadarko has various contractual commitments pertaining to exploration, development and production activities. The amounts in the previous table reflect obligations and commitments that are not included in the 2003 capital budget. Following is a description of the Company's significant operating obligations and commitments related to oil and gas activities.

Production Platform In April 2002, the Company signed an agreement under which a floating production platform for its Marco Polo discovery in Green Canyon Block 608 of the Gulf of Mexico will be installed. Since the Company's obligation related to the agreement begins at the time of project completion, the table above does not include any amounts related to this agreement. For additional information see Note 17 -- Commitments of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

Drilling and Work Commitments Anadarko has various work related commitments for, among other things, drilling wells, obtaining and processing seismic and fulfilling rig commitments. The above table includes drilling and work related commitments of $105 million, comprised of $37 million in the United States, $35 million in Canada, $24 million in Algeria and $9 million in other international locations. The commitments in Algeria are related primarily to exploration and development contracts with Sonatrach, who is the registered owner of 4.9% of the Company's outstanding common stock.

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Sales Commitments In Canada, the Company has commitments to deliver gas under fixed price contracts. The gas volumes to be delivered under these contracts are as follows:

                                                                  COMMITMENTS BY PERIOD
                                                              ------------------------------
                                                                        2-3     4-5
                                                              1 YEAR   YEARS   YEARS   TOTAL
                                                              ------   -----   -----   -----
NATURAL GAS
Volume -- million MMBtu                                          25      33       5       63
Price per MMBtu                                               $2.01    $1.92   $1.69   $1.93


MMBtu -- million British thermal units

OTHER The Company has defined benefit pension plans and supplemental plans that are non-contributory pension plans. In January 2003, the Company made a $52 million contribution to a defined benefit pension plan.

For additional information on contracts and arrangements the Company enters into from time to time see Note 7 -- Debt, Note 8 -- Financial Instruments, Note
18 -- Pension Plans, Other Postretirement Benefits and Employee Savings Plans and Note 19 -- Contingencies of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

OUTLOOK ON LIQUIDITY

Anadarko's net cash from operating activities in 2002 was $2.2 billion compared to $3.3 billion in 2001 and $1.5 billion in 2000. The decrease in 2002 cash flow is attributed to a significant decrease in natural gas prices. The Company's original capital expenditure budget for 2003 has been set at $2.3 billion and net cash from operating activities in 2003 is expected to be about $2.6 billion. The Company plans to use a portion of 2003 cash flow to repay about $300 million in debt. Cash flow from operations will vary depending upon, among other things, actual commodity prices received throughout the year. The Company intends to adjust capital expenditures to reflect changes in its cash flow from operations. The Company's cash flow and capital expenditure estimates for 2003 were based on prices far below where oil and gas prices were trading in the first quarter of 2003. If higher prices are realized, the Company may expand the drilling program, make targeted acquisitions or further reduce debt. The Company has a stock buyback program to purchase up to $1 billion in shares of Anadarko common stock. Any stock repurchases for 2003 are not included in the announced capital expenditure budget and are not currently anticipated.
Both exchange and over-the-counter traded financial derivative instruments are subject to margin deposit requirements. Margin deposits are required by the Company whenever its unrealized losses with a counterparty exceed pre-determined credit limits. Given the Company's sizable hedge position and price volatility, the Company may be required from time to time to advance cash to its counterparties in order to satisfy these margin deposit requirements. During January and February 2003, the Company's margin deposit requirements have ranged from zero to $125 million. Based on NYMEX future strip prices, the Company's margin deposit requirement was $25 million on March 7, 2003.
Anadarko believes that operating cash flow and existing or available credit facilities will be adequate to meet its capital and operating requirements for 2003. The Company funds its day-to-day operating expenses and capital expenditures from operating cash flows, supplemented as needed by short-term borrowings under commercial paper, money market loans or credit facility borrowings. To facilitate such borrowings, the Company has in place $750 million in committed credit facilities, which are supplemented by various non-committed credit lines that may be offered by certain banks from time to time at then-quoted rates. It is the Company's policy to limit commercial paper borrowing to levels that are fully back-stopped by unused balances from its committed credit facilities. The Company may choose to refinance certain portions of these short-term borrowings by issuing long-term debt in the public or private debt markets. To facilitate such financings, the Company may file shelf registrations in advance with the SEC. The Company continuously monitors its debt position and coordinates its capital expenditure program with expected cash flows and projected debt repayment schedules. The Company will continue to evaluate funding alternatives, including property sales and additional borrowing, to secure other funds for additional capital expenditures and stock repurchases. At this time, Anadarko has no plans to issue common stock other than through its Dividend Reinvestment and Stock Purchase Plan, through the exercise of

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stock options, possible redemption of convertible debt securities or through the Company's Employee Savings Plan and Employee Stock Ownership Plan equity funded contributions. See Regulatory Matters and Additional Factors Affecting Business for additional information.

DIVIDENDS

In 2002, Anadarko paid $80 million in dividends to its common stockholders (7.5 cents per share in the first, second and third quarters and 10 cents per share in the fourth quarter). In 2001, Anadarko paid $57 million in dividends to its common stockholders (5 cents per share in the first, second and third quarters and 7.5 cents per share in the fourth quarter). The dividend amount in 2000 was $39 million (5 cents per share per quarter). Anadarko has paid a dividend to its common stockholders continuously since becoming an independent company in 1986.
The Company's credit agreements allow for a maximum capitalization ratio of 60% debt, exclusive of the effect of any non-cash write-downs. As of December 31, 2002, Anadarko's capitalization ratio was 44% debt. While there is no specific restriction on paying dividends, under the maximum debt capitalization ratio retained earnings were not restricted as to the payment of dividends at December 31, 2002. The amount of future common stock dividends will depend on earnings, financial conditions, capital requirements and other factors, and will be determined by the Board of Directors on a quarterly basis.
In 2002, 2001 and 2000, the Company also paid $6 million, $7 million and $11 million, respectively, in preferred stock dividends. In 2003, the preferred stock dividends are expected to be $5 million.

CRITICAL ACCOUNTING POLICIES

FINANCIAL STATEMENTS AND USE OF ESTIMATES The consolidated financial statements include the accounts of Anadarko and its subsidiaries. All significant intercompany transactions have been eliminated. The Company accounts for investments in affiliated companies (generally 20% to 50% owned) using the equity method of accounting. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America. In preparing financial statements, Management makes informed judgments and estimates that affect the reported amounts of assets and liabilities as of the date of the financial statements and affect the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, Management reviews its estimates, including those related to litigation, environmental liabilities, income taxes and determination of proved reserves. Changes in facts and circumstances may result in revised estimates and actual results may differ from these estimates.

PROPERTIES AND EQUIPMENT The Company uses the full cost method of accounting for exploration and development activities as defined by the SEC. Under this method of accounting, the costs for unsuccessful, as well as successful, exploration and development activities are capitalized as properties and equipment. This includes any internal costs that are directly related to exploration and development activities but does not include any costs related to production, general corporate overhead or similar activities. Gain or loss on the sale or other disposition of oil and gas properties is not recognized, unless the gain or loss would significantly alter the relationship between capitalized costs and proved reserves of oil and natural gas attributable to a country. The application of the full cost method of accounting for oil and gas properties generally results in higher capitalized costs and higher DD&A rates compared to the successful efforts method of accounting for oil and gas properties.
The sum of net capitalized costs and estimated future development and abandonment costs of oil and gas properties and mineral investments is amortized using the unit-of-production method. All other properties are stated at original cost and depreciated on the straight-line basis over the useful life of the assets, which ranges from three to 40 years.

PROVED RESERVES Proved oil and gas reserves, as defined by SEC Regulation S-X Rule 4-10(a) (2i), (2ii), (2iii), (3) and (4), are the estimated quantities of crude oil, natural gas, and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions, i.e., prices and costs as of the date the estimate is made. Prices include consideration of changes in existing prices provided only by contractual arrangements, but not on escalations based upon future conditions. Prices do not include the effect of derivative instruments entered into by the Company.

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Proved developed oil and gas reserves are reserves that can be expected to be recovered through existing wells with existing equipment and operating methods. Additional oil and gas expected to be obtained through the application of fluid injection or other improved recovery techniques for supplementing the natural forces and mechanisms of primary recovery are included as proved developed reserves only after testing by a pilot project or after the operation of an installed program has confirmed through production response that increased recovery will be achieved.
Proved undeveloped oil and gas reserves are reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for re-completion. Reserves on undrilled acreage are limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved reserves for other undrilled units are claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation.
The Company emphasizes that the volumes of reserves are estimates which, by their nature, are subject to revision. The estimates are made using all available geological and reservoir data as well as production performance data. These estimates, made by the Company's engineers, are reviewed and revised, either upward or downward, as warranted by additional data. Revisions are necessary due to changes in assumptions based on, among other things, reservoir performance, prices, economic conditions and governmental restrictions. Decreases in prices, for example, may cause a reduction in some proved reserves due to uneconomic conditions.
Under the terms of Anadarko's risk service contract with the national oil company of Venezuela, Anadarko earns a fee that is translated into barrels of oil based on current prices (economic interest method). This means that higher oil prices reduce the Company's reported production volumes and reserves from that project and lower oil prices increase reported production volumes and reserves. Production volume and reserve changes due to the prices used to determine the Company's economic interest have no impact on the value of the project. The following table shows the impact on 2002 at various price levels to demonstrate the effect of the economic interest method.

                                                                ECONOMIC INTEREST METHOD
                                                               --------------------------
NYMEX price per barrel                                         $36.00    $30.00    $24.00
Revenues -- millions                                           $   88    $   88    $   88
Production volumes -- MMBOE                                         3         4         5
Reserves -- MMBOE                                                  65        78        98

COSTS EXCLUDED Oil and gas properties include costs that are excluded from capitalized costs being amortized. These amounts represent costs of investments in unproved properties and major development projects. Anadarko excludes these costs on a country-by-country basis until proved reserves are found or until it is determined that the costs are impaired. All costs excluded are reviewed quarterly to determine if impairment has occurred. The amount of any impairment is transferred to the costs to be amortized (the DD&A pool) or a charge is made against earnings for those international operations where a reserve base has not yet been established. For international operations where a reserve base has not yet been established, an impairment requiring a charge to earnings may be indicated through evaluation of drilling results, relinquishing drilling rights or other information. Costs excluded for oil and gas properties are generally classified and evaluated as significant or individually insignificant properties.
Significant properties, comprised primarily of costs associated with domestic offshore blocks, Alaska, the Land Grant and other international areas, are individually evaluated each quarter by the Company's exploration and engineering staff. Non-producing leases are evaluated based on the progress of the Company's exploration program to date. Exploration costs are transferred to the DD&A pool upon completion of drilling individual wells. The Company has a 10 to 15 year exploration and evaluation program for the Land Grant acreage. Costs will be transferred accordingly to the DD&A pool over the length of the program. The Land Grant's mineral interests (both working and royalty interests) are owned by the Company in perpetuity. All other significant properties are evaluated over a five- to ten- year period, depending on the lease term.
Insignificant properties are comprised primarily of costs associated with onshore properties in the United States and Canada. Non-producing leases are transferred to the DD&A pool over a three- to five- year period based on the average lease period. Exploration costs are transferred to the DD&A pool upon completion of evaluation.

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CAPITALIZED INTEREST SFAS No. 34, "Capitalization of Interest Cost," provides standards for the capitalization of interest cost as part of the historical cost of acquiring assets. Under FASB-Interpretation (FIN) No. 33 "Applying FASB Statement No. 34 to Oil and Gas Producing Operations Accounted for by the Full Cost Method," costs of investments in unproved properties and major development projects, on which DD&A expense is not currently taken and on which exploration or development activities are in progress, qualify for capitalization of interest. Capitalized interest is calculated by multiplying the Company's weighted-average interest rate on debt by the amount of qualifying costs excluded. Capitalized interest cannot exceed gross interest expense. As costs excluded are transferred to the DD&A pool, the associated capitalized interest is also transferred to the DD&A pool.

CEILING TEST Companies that use the full cost method of accounting for oil and gas exploration and development activities are required to perform a ceiling test each quarter. The full cost ceiling test is an impairment test prescribed by SEC Regulation S-X Rule 4-10. The ceiling test is performed on a country-by- country basis. The test determines a limit, or ceiling, on the book value of oil and gas properties. That limit is basically the after tax present value of the future net cash flows from proved crude oil and natural gas reserves. This ceiling is compared to the net book value of the oil and gas properties reduced by any related deferred income tax liability. If the net book value reduced by the related deferred income taxes exceeds the ceiling, an impairment or non-cash write down is required. A ceiling test impairment can give Anadarko a significant loss for a particular period; however, future DD&A expense would be reduced. Shown below is a summary of the ceiling test calculation and description of the major components.

Ceiling Test Calculation
Present Value of Oil and Gas Properties (PV 10)
+ Costs Excluded
- Income Taxes = Ceiling

Net Oil and Gas Properties and Equipment
- Deferred Income Tax Liability = Net Investment

Ceiling - Net Investment = Cushion (Write-off) After Income Taxes

Present Value of Oil and Gas Properties (PV 10) Estimates of future net cash flows from proved reserves of gas, oil, condensate and NGLs are made in accordance with SEC Regulation S-X Rule 4-10. The present value of oil and gas properties represents the estimated future net cash flows from proved oil and gas reserves, discounted using a prescribed 10% discount rate. Proved oil and gas reserve estimates, which are determined by the Company's engineers, are reviewed and revised as reservoir performance, prices and other economic conditions change. Future net revenues are calculated based on estimated production volumes generally using the oil and gas prices in effect on the last day of the quarter, held flat for the life of the reserves. Future net revenues are reduced by estimated future production and development costs based on quarter-end cost levels, assuming continuation of existing economic conditions.
Due to the volatility of commodity prices, the oil and gas prices on the last day of the quarter significantly impact the calculation of the PV 10. At year-end 2002, Anadarko's ceiling tests were based on NYMEX prices of $4.60 per Mcf for natural gas and $31.20 per barrel for crude oil. The NYMEX prices are adjusted by location and quality differentials, as appropriate, to determine Anadarko's realized prices. The present value of future net cash flows does not purport to be an estimate of the fair market value of Anadarko's proved reserves. An estimate of fair value would also take into account, among other things, anticipated changes in future prices and costs, the expected recovery of reserves in excess of proved reserves and a discount factor more representative of the time value of money and the risks inherent in producing oil and gas.

Costs Excluded Costs excluded are capitalized costs of investments in unproved properties and major development projects. These costs are excluded from capitalized costs being amortized through DD&A expense. Anadarko excludes all costs until proved reserves are found or until it is determined that the costs are impaired. When proved reserves are found, the decrease in costs excluded is offset by an increase in PV 10; thereby,

46

generally increasing the ceiling. When proved reserves are not found, the decrease in costs excluded is not offset by an increase in PV 10; thereby, decreasing the ceiling.

Income Taxes Future income taxes are based on the existing tax rates applied to the difference between the total of the present value of the future net cash flows plus costs excluded less the tax basis of the oil and gas properties. The effect of tax loss carryforwards and credits related to oil and gas activities is considered in determining income taxes.

Net Oil and Gas Properties and Equipment Net oil and gas properties and equipment are the capitalized costs related to oil and gas activities less the accumulated DD&A. Under the full cost method of accounting, the costs for unsuccessful, as well as successful, exploration and development activities are capitalized as properties and equipment. The net capitalized costs are depreciated using the unit-of-production method. Net properties and equipment increase due to capital expenditures or acquisitions and decrease due to DD&A expense, property divestitures or ceiling test impairments.

Deferred Income Tax Liability Deferred income taxes related only to oil and gas properties are included in the deferred income tax liability.

DERIVATIVE INSTRUMENTS Anadarko uses derivative instruments for various risk management purposes. Effective January 2001, derivative instruments utilized to manage or reduce commodity price risk related to the Company's equity production were accounted for under the provisions of SFAS No. 133 "Accounting for Derivative Instruments and Hedging Activities." Under this statement, all derivatives are carried on the balance sheet at fair value. Realized gains and losses are recognized in sales when the underlying physical gas and oil production is sold. Accordingly, realized derivative gains and losses are generally offset by similar changes in the realized value of the underlying physical gas and oil production. Realized derivative gains and losses are reflected in the average sales price of the physical gas and oil production.
Accounting for unrealized gains and losses is dependent on whether the derivative instruments have been designated and qualify as part of a hedging relationship. Derivative instruments may be designated as a hedge of exposure to changes in fair values, cash flows or foreign currencies, if certain conditions are met. Unrealized gains and losses on derivative instruments that do not meet the conditions to qualify for hedge accounting are recognized currently in other (income) expense.
If the hedged exposure is to changes in fair value, the gains and losses on the derivative instrument, as well as the offsetting losses and gains on the hedged item, are recognized currently in earnings. Consequently, if gains and losses on the derivative instrument and the related hedge item do not completely offset, the difference (i.e., ineffective portion of the hedge) is recognized currently in earnings.
If the hedged exposure is a cash flow exposure, the effective portion of the gains and losses on the derivative instrument is reported as a component of accumulated other comprehensive income and reclassified into earnings in the same period or periods during which the hedged forecasted transaction affects earnings. The ineffective portion of the gains and losses from the derivative instrument, if any, as well as any amounts excluded from the assessment of the cash flow hedges' effectiveness are recognized currently in other (income) expense.
Derivative instruments, as well as physical delivery purchase and sale contracts, utilized in the Company's energy trading activities and in the management of price risk associated with the Company's firm transportation keep-whole commitment (see Derivative Instruments under Item 7a of this Form 10-K) were accounted for under the mark-to-market accounting method pursuant to EITF Issue No. 98-10, "Accounting for Contracts Involved in Energy Trading and Risk Management Activities." Under this method, the derivatives and physical delivery contracts are revalued in each accounting period and unrealized gains and losses are recorded in the statement of income and carried as assets or liabilities on the balance sheet. EITF Issue No. 98-10 was rescinded in October 2002. As a result, mark-to-market accounting is precluded for energy trading contracts that are not derivatives pursuant to SFAS No. 133. The recission of EITF Issue No. 98-10 is effective for contracts entered into after October 25, 2002 and is effective for all contracts January 1, 2003. Substantially all of the Company's physical delivery energy trading contracts are considered to be derivatives pursuant to SFAS No. 133. Therefore, the recission of EITF Issue No. 98-10 did not have a significant impact on the accounting for energy trading contracts as those contracts continue to be marked-to-market in accordance with SFAS No. 133.
The Company's derivative instruments associated with the marketing and trading activities are generally either exchange traded or valued by reference to a commodity that is traded in a liquid market. Valuation is

47

determined by reference to readily available public data. Option valuations are based on the Black-Scholes option pricing model and verified against third-party quotations. The fair value of the short-term portion of the firm transportation keep-whole agreement is calculated with quoted natural gas basis prices. Basis is the difference in value between gas at various delivery points and the NYMEX gas futures contract price. Management believes that natural gas basis price quotes beyond the next twelve months are not reliable indicators of fair value due to decreasing liquidity. Accordingly, the fair value of the long-term portion is estimated based on historical natural gas basis prices, discounted at 10% per year. Management also periodically evaluates the supply and demand factors (such as expected drilling activity, anticipated pipeline construction projects, expected changes in demand at pipeline delivery points, etc.) that may impact the future market value of the firm transportation capacity to determine if the estimated fair value should be adjusted.

NEW ACCOUNTING PRINCIPLES AND RECENT DEVELOPMENTS

New Accounting Principles For information on New Accounting Principles see Note
1 -- Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

Proved Reserves The SEC is currently in the process of obtaining information from oil and gas exploration companies operating offshore (including Anadarko) to assess the criteria being used by industry to determine proved reserves related to new field discoveries offshore. The SEC regulations allow companies to recognize proved reserves if economic producibility is supported by either an actual production test (flow test) or conclusive formation testing. In the absence of a production test, compelling technical data must exist to recognize proved reserves related to the initial discovery of a field. In deep-water environments where production tests are extremely expensive, the industry has increasingly depended on advanced technical testing to support economic producibility.
Anadarko has recorded proved reserves related to the initial discovery of four offshore fields based on conclusive formation tests rather than actual production tests. As of December 31, 2002, these proved reserves amounted to 100 MMBOE or less than 5% of Anadarko's total worldwide proved reserves. The Company is currently developing all of these fields and expects the majority of the production from these fields to commence during 2004. Anadarko believes the reserves were properly classified.
Most of these reserves are located at Marco Polo, a deep-water field under development at Green Canyon Block 608. Ryder Scott Company, an independent petroleum consulting company, has reviewed Anadarko's technical data and studies used to support the classification of proved reserves at the Marco Polo field. Ryder Scott's review concludes that the reserves meet the SEC's definition of proved reserves. A copy of the Ryder Scott report is attached as Exhibit 99.3 to this Form 10-K.
Anadarko has furnished the information requested to the SEC and is unable to predict the likely outcome of the SEC's staff review of this industry practice. The issue is not expected to have a material impact on the Company's proved reserves or financial results; however, if the issue is not favorably resolved, Anadarko may be required to revise its proved reserve estimates, which would affect Anadarko's finding costs per barrel, reserve replacement ratios and DD&A expense, until flow tests are conducted or production commences.

REGULATORY MATTERS AND ADDITIONAL FACTORS AFFECTING BUSINESS

FORWARD LOOKING STATEMENTS The Company has made in this report, and may from time to time otherwise make in other public filings, press releases and discussions with Company management, forward looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 concerning the Company's operations, economic performance and financial condition. These forward looking statements include information concerning future production and reserves, schedules, plans, timing of development, contributions from oil and gas properties, and those statements preceded by, followed by or that otherwise include the words "believes," "expects," "anticipates," "intends," "estimates," "projects," "target," "goal," "plans," "objective," "should" or similar expressions or variations on such expressions. For such statements, the Company claims the protection of the safe harbor for forward looking statements contained in the Private Securities Litigation Reform Act of 1995. Such statements are subject to various risks and uncertainties, and actual results could differ materially from those expressed or implied by such statements due to a number of

48

factors in addition to those discussed below and elsewhere in this Form 10-K and in the Company's other public filings, press releases and discussions with Company management. Anadarko undertakes no obligation to publicly update or revise any forward looking statements.

COMMODITY PRICING AND DEMAND Crude oil prices continue to be affected by political developments worldwide, pricing decisions and production quotas of OPEC and the volatile trading patterns in the commodity futures markets. Natural gas prices also continue to be highly volatile. In periods of sharply lower commodity prices, the Company may curtail production and capital spending projects, as well as delay or defer drilling wells in certain areas because of lower cash flows. Changes in crude oil and natural gas prices can impact the Company's determination of proved reserves and the Company's calculation of the standardized measure of discounted future net cash flows relating to oil and gas reserves. In addition, demand for oil and gas in the U.S. and worldwide may affect the Company's level of production.
Under the full cost method of accounting, a non-cash charge to earnings related to the carrying value of the Company's oil and gas properties on a country-by-country basis may be required when prices are low. Whether the Company will be required to take such a charge depends on the prices for crude oil and natural gas at the end of any quarter, as well as the effect of both capital expenditures and changes to proved reserves during that quarter. While this non-cash charge can give Anadarko a significant reported loss for the period, future expenses for DD&A will be reduced.

ENVIRONMENTAL AND SAFETY The Company's oil and gas operations and properties are subject to numerous federal, state and local laws and regulations relating to environmental protection from the time oil and gas projects commence until abandonment. These laws and regulations govern, among other things, the amounts and types of substances and materials that may be released into the environment, the issuance of permits in connection with exploration, drilling and production activities, the release of emissions into the atmosphere, the discharge and disposition of generated waste materials, offshore oil and gas operations, the reclamation and abandonment of wells and facility sites and the remediation of contaminated sites. In addition, these laws and regulations may impose substantial liabilities for the Company's failure to comply with them or for any contamination resulting from the Company's operations.
Anadarko takes the issue of environmental stewardship very seriously and works diligently to comply with applicable environmental and safety rules and regulations. Compliance with such laws and regulations has not had a material effect on the Company's operations or financial condition in the past. However, because environmental laws and regulations are becoming increasingly more stringent, there can be no assurances that such laws and regulations or any environmental law or regulation enacted in the future will not have a material effect on the Company's operations or financial condition.
For a description of certain environmental proceedings in which the Company is involved, see Note 19 -- Contingencies of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

EXPLORATION AND OPERATING RISKS The Company's business is subject to all of the operating risks normally associated with the exploration for and production of oil and gas, including blowouts, cratering and fire, any of which could result in damage to, or destruction of, oil and gas wells or formations or production facilities and other property and injury to persons.
As protection against financial loss resulting from these operating hazards, the Company maintains insurance coverage, including certain physical damage, employer's liability, comprehensive general liability and worker's compensation insurance. Although Anadarko is not insured against all risks in all aspects of its business, such as political risk, business interruption risk and risk of major terrorist attacks, the Company believes that the coverage it maintains is customary for companies engaged in similar operations. The occurrence of a significant event against which the Company is not fully insured could have a material adverse effect on the Company's financial position.

DEVELOPMENT RISKS The Company is involved in several large development projects. Key factors that may affect the timing and outcome of such projects include: project approvals by joint venture partners; timely issuance of permits and licenses by governmental agencies; manufacturing and delivery schedules of critical equipment; and commercial arrangements for pipelines and related equipment to transport and market hydrocarbons. In large development projects, these uncertainties are usually resolved, but delays and differences between

49

estimated and actual timing of critical events are commonplace and may, therefore, affect the forward-looking statements related to large development projects.

DOMESTIC GOVERNMENTAL RISKS The domestic operations of the Company have been, and at times in the future may be, affected by political developments and by federal, state and local laws and regulations such as restrictions on production, changes in taxes, royalties and other amounts payable to governments or governmental agencies, price or gathering rate controls and environmental protection regulations.

FOREIGN OPERATIONS RISK The Company's operations in areas outside the U.S. are subject to various risks inherent in foreign operations. These risks may include, among other things, loss of revenue, property and equipment as a result of hazards such as expropriation, war, insurrection and other political risks, increases in taxes and governmental royalties, renegotiation of contracts with governmental entities, changes in laws and policies governing operations of foreign-based companies, currency restrictions and exchange rate fluctuations and other uncertainties arising out of foreign government sovereignty over the Company's international operations. The Company's international operations may also be adversely affected by laws and policies of the United States affecting foreign trade and taxation. To date, the Company's international operations have not been materially affected by these risks.

COMPETITION The oil and gas business is highly competitive in the search for and acquisition of reserves and in the gathering and marketing of oil and gas production. The Company's competitors include the major oil companies, independent oil and gas concerns, individual producers, gas marketers and major pipeline companies, as well as participants in other industries supplying energy and fuel to industrial, commercial and individual consumers.

OTHER Regulatory agencies in certain states and countries have authority to issue permits for seismic exploration and the drilling of wells, regulate well spacing, prevent the waste of oil and gas resources through proration and regulate environmental matters.
Operations conducted by the Company on federal oil and gas leases must comply with numerous regulatory restrictions, including various nondiscrimination statutes. Additionally, certain operations must be conducted pursuant to appropriate permits issued by the Bureau of Land Management and the Minerals Management Service of the U.S. Department of the Interior. In addition to the standard permit process, federal leases and most international concessions require a complete environmental impact assessment prior to authorizing an exploration or development plan.

LEGAL PROCEEDINGS

General The Company is a defendant in a number of lawsuits and is involved in governmental proceedings arising in the ordinary course of business, including, but not limited to, royalty claims, contract claims and environmental claims. The Company has also been named as a defendant in various personal injury claims, including numerous claims by employees of third-party contractors alleging exposure to asbestos and benzene while working at a refinery in Corpus Christi, Texas, which Anadarko Holding sold in segments in 1987 and 1989. While the ultimate outcome and impact on the Company cannot be predicted with certainty, Management believes that the resolution of these proceedings will not have a material adverse effect on the consolidated financial position of the Company, although results of operations and cash flow could be significantly impacted in the reporting periods in which such matters are resolved.
For a description of certain legal proceedings in which the Company is involved, see Legal Proceedings under Item 3 of this Form 10-K.

50

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

DERIVATIVE INSTRUMENTS Anadarko's commodity derivative instruments currently are comprised of futures, swaps and options contracts. The volume of commodity derivative instruments utilized by the Company to hedge its market price risk and in its energy trading operation can vary during the year within the boundaries of its established risk management policy guidelines. For information regarding the Company's accounting policies related to derivatives and additional information related to the Company's derivative instruments, see Note
1 -- Summary of Significant Accounting Policies and Note 8 -- Financial Instruments of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

Derivative Instruments Held for Non-Trading Purposes The Company had equity production hedges of 334 billion cubic feet of natural gas and 28 million barrels of crude oil as of December 31, 2002. As of December 31, 2002, the Company had a net unrealized loss of $154 million before taxes on these commodity derivative instruments. Based upon an analysis utilizing the actual derivative contractual volumes, a 10% increase in commodity prices would result in an additional loss on these commodity derivative instruments of approximately $166 million. However, this loss would be substantially offset by a gain in the value of that portion of the Company's equity production that is hedged.

Derivative Instruments Held for Trading Purposes As of December 31, 2002, the Company had a net unrealized gain of $24 million (gains of $73 million and losses of $49 million) on commodity derivative instruments entered into for trading purposes and a net unrealized loss of $30 million (gains of $16 million and losses of $46 million) on physical contracts entered into for trading purposes. Based upon an analysis utilizing the actual derivative contractual volumes and assuming a 10% decrease in underlying commodity prices, the potential additional loss on the derivative instruments would be approximately $20 million.

Firm Transportation Keep-Whole Agreement Anadarko Holding Company (Anadarko Holding) was a party to several long-term firm gas transportation agreements that supported its gas marketing program within its gathering, processing and marketing (GPM) business segment, which was sold in 1999 to Duke Energy (Duke). As part of the GPM disposition, Anadarko Holding agreed to pay Duke if transportation market values fall below the fixed contract transportation rates, while Duke will pay Anadarko Holding if the transportation market values exceed the contract transportation rates (keep-whole agreement). This keep-whole agreement will be in effect until the earlier of each contract's expiration date or February 2009. The Company may periodically use derivative instruments to reduce its exposure under the keep-whole agreement to potential decreases in future transportation market values. Due to decreased liquidity, the use of derivative instruments to manage this risk is generally limited to the forward twelve months. As of December 31, 2002, accounts payable included $5 million and other long-term liabilities included $68 million related to this agreement. As of December 31, 2001, accounts payable included $27 million and other long-term liabilities included $80 million related to this agreement. A 10% unfavorable change in prices on the short-term portion of the keep-whole agreement would result in an additional loss of $10 million. The future gain or loss from this agreement cannot be accurately predicted. For additional information related to the keep-whole agreement, see Note 8 -- Financial Instruments of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.
For additional information regarding the Company's marketing and trading portfolio and the firm transportation keep-whole agreement see Marketing Strategies under Item 7 of this Form 10-K.

COMMODITY PRICE RISK As a result of low natural gas and oil prices at September 30, 2001, Anadarko's capitalized costs of oil and gas properties primarily in the United States, Canada and Argentina exceeded the ceiling limitation and the Company recorded a $2.5 billion ($1.6 billion after taxes) non-cash write-down in the third quarter of 2001. The pre-tax write-down is reflected as additional accumulated depreciation, depletion and amortization. See Critical Accounting Policies and Regulatory Matters and Additional Factors Affecting Business under Item 7 of this Form 10-K.

INTEREST RATE RISK Anadarko is also exposed to risk resulting from changes in interest rates as a result of the Company's variable and fixed interest rate debt. The Company believes the potential effect that reasonably possible near term changes in interest rates may have on the fair value of the Company's various debt instruments is not material.

51

FOREIGN CURRENCY RISK The Company's Canadian subsidiaries use the Canadian dollar as their functional currency. The Company's other international subsidiaries use the U.S. dollar as their functional currency. To the extent that business transactions in these countries are not denominated in the respective country's functional currency, the Company is exposed to foreign currency exchange rate risk.
At December 31, 2002 and 2001, a Canadian subsidiary had $98 million and $187 million, respectively, outstanding of fixed-rate notes and debentures denominated in U.S. dollars. The potential foreign currency remeasurement impact on earnings from a 10% increase in the December 31, 2002 Canadian exchange rate would be about $9 million based on the outstanding debt at December 31, 2002.
At December 31, 2002 and 2001, the Company's Latin American subsidiaries had foreign deferred tax liabilities denominated in the local currency equivalent totaling $49 million and $78 million, respectively. In conjunction with the sale of certain properties in 2001, the Company indemnified a purchaser for the use of local tax losses denominated in the local currency equivalent totaling $22 million. The potential foreign currency remeasurement impact on net earnings from a 10% increase in the year-end Latin American exchange rates would be approximately $4 million.
For additional information related to foreign currency risk see Note 8 -- Financial Instruments of the Notes to Consolidated Financial Statements under Item 8 of this Form 10-K.

52

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

ANADARKO PETROLEUM CORPORATION
INDEX
CONSOLIDATED FINANCIAL STATEMENTS

                                                              PAGE
                                                              ----
Report of Management                                           54
Independent Auditors' Report                                   55
Statements of Income, Three Years Ended December 31, 2002      56
Balance Sheets, December 31, 2002 and 2001                     57
Statements of Stockholders' Equity, Three Years Ended
  December 31, 2002                                            58
Statements of Comprehensive Income, Three Years Ended
  December 31, 2002                                            59
Statements of Cash Flows, Three Years Ended December 31,
  2002                                                         60
Notes to Consolidated Financial Statements                     61
Supplemental Information on Oil and Gas Exploration and
  Production Activities                                        98
Supplemental Quarterly Information                            111

53

ANADARKO PETROLEUM CORPORATION
REPORT OF MANAGEMENT

The Management of Anadarko Petroleum Corporation is responsible for the preparation and integrity of all information contained in the accompanying consolidated financial statements. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America. In preparing the financial statements, Management makes informed judgments and estimates.
Management maintains and relies on the Company's system of internal accounting controls. Although no system can ensure elimination of all errors and irregularities, this system is designed to provide reasonable assurance that assets are safeguarded, transactions are executed in accordance with Management's authorization and accounting records are reliable as a basis for the preparation of financial statements. This system includes the selection and training of qualified personnel, an organizational structure providing appropriate delegation of authority and division of responsibility, the establishment of accounting and business policies for the Company and the conduct of internal audits.
The Board of Directors pursues its responsibility for the consolidated financial information through its Audit Committee, which is composed solely of Directors who are independent. The Audit Committee recommends to the Board of Directors the selection of independent auditors and reviews their fee arrangements. The Audit Committee meets periodically with Management, the internal auditors and the independent auditors to review that each is carrying out its responsibilities. Both the internal and the independent auditors have full and free access to the Audit Committee to discuss auditing and financial reporting matters.
We believe that Anadarko's policies and procedures, including its system of internal accounting controls, provide reasonable assurance that the financial statements are prepared in accordance with the applicable securities rules and regulations.

/s/ JOHN N. SEITZ

John N. Seitz
President and Chief Executive Officer


/s/ MICHAEL E. ROSE

Michael E. Rose
Executive Vice President and
Chief Financial Officer

54

INDEPENDENT AUDITORS' REPORT

The Board of Directors and Stockholders
Anadarko Petroleum Corporation:

We have audited the accompanying consolidated balance sheets of Anadarko Petroleum Corporation and subsidiaries as of December 31, 2002 and 2001, and the related consolidated statements of income, stockholders' equity, comprehensive income and cash flows for each of the years in the three-year period ended December 31, 2002. These consolidated financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits.
We conducted our audits in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Anadarko Petroleum Corporation and subsidiaries as of December 31, 2002 and 2001, and the results of their operations and their cash flows for each of the years in the three-year period ended December 31, 2002, in conformity with accounting principles generally accepted in the United States of America.
As discussed in Note 1 to the consolidated financial statements, effective January 1, 2002, the Company changed its method of accounting for goodwill, effective January 1, 2001, the Company changed its method of accounting for derivative instruments, and effective January 1, 2000, the Company changed its method of accounting for foreign crude oil inventories.

/s/ KPMG LLP

Houston, Texas
January 31, 2003

55

ANADARKO PETROLEUM CORPORATION
CONSOLIDATED STATEMENTS OF INCOME

                                                               YEARS ENDED DECEMBER 31
                                                              --------------------------
                                                               2002      2001      2000
             millions except per share amounts                ------    ------    ------
REVENUES
Gas sales                                                     $1,835    $2,952    $1,615
Oil and condensate sales                                       1,690     1,397       946
Natural gas liquids sales                                        222       256       264
Other sales                                                      113       113        86
                                                              ------    ------    ------
Total                                                          3,860     4,718     2,911
                                                              ------    ------    ------
COSTS AND EXPENSES
Operating expenses                                               747       769       487
Administrative and general                                       314       292       270
Depreciation, depletion and amortization                       1,121     1,154       593
Other taxes                                                      214       247       128
Impairments related to oil and gas properties                     39     2,546        50
Amortization of goodwill                                          --        73        31
                                                              ------    ------    ------
Total                                                          2,435     5,081     1,559
                                                              ------    ------    ------
Operating Income (Loss)                                        1,425      (363)    1,352
OTHER (INCOME) EXPENSE
Interest expense                                                 203        92        93
Other (income) expense                                            15       (65)     (167)
                                                              ------    ------    ------
Total                                                            218        27       (74)
                                                              ------    ------    ------
Income (Loss) Before Income Taxes                              1,207      (390)    1,426
INCOME TAX EXPENSE (BENEFIT)                                     376      (214)      602
                                                              ------    ------    ------
NET INCOME (LOSS) BEFORE CUMULATIVE EFFECT OF CHANGE IN
  ACCOUNTING PRINCIPLE                                        $  831    $ (176)   $  824
                                                              ------    ------    ------
Preferred Stock Dividends                                          6         7        11
                                                              ------    ------    ------
NET INCOME (LOSS) AVAILABLE TO COMMON STOCKHOLDERS BEFORE
  CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE         $  825    $ (183)   $  813
                                                              ------    ------    ------
Cumulative Effect of Change in Accounting Principle               --         5        17
                                                              ------    ------    ------
NET INCOME (LOSS) AVAILABLE TO COMMON STOCKHOLDERS            $  825    $ (188)   $  796
                                                              ------    ------    ------
PER COMMON SHARE
Net income (loss) -- before change in accounting
  principle -- basic                                          $ 3.32    $(0.73)   $ 4.42
Net income (loss) -- before change in accounting
  principle -- diluted                                        $ 3.21    $(0.73)   $ 4.25
Change in accounting principle -- basic                       $   --    $(0.02)   $(0.09)
Change in accounting principle -- diluted                     $   --    $(0.02)   $(0.09)
Net income (loss) -- basic                                    $ 3.32    $(0.75)   $ 4.32
Net income (loss) -- diluted                                  $ 3.21    $(0.75)   $ 4.16
Dividends                                                     $0.325    $0.225    $ 0.20

AVERAGE NUMBER OF COMMON SHARES OUTSTANDING -- BASIC             248       250       184
                                                              ------    ------    ------
AVERAGE NUMBER OF COMMON SHARES OUTSTANDING -- DILUTED           260       250       193
                                                              ------    ------    ------

See accompanying notes to consolidated financial statements.

56

ANADARKO PETROLEUM CORPORATION
CONSOLIDATED BALANCE SHEETS

                                                                 DECEMBER 31
                                                              -----------------
                                                               2002      2001
                          millions                            -------   -------
ASSETS
CURRENT ASSETS
Cash and cash equivalents                                     $    34   $    37
Accounts receivable, net of allowance:
  Customers                                                       673       532
  Others                                                          435       486
Other current assets                                              138       146
                                                              -------   -------
Total                                                           1,280     1,201
                                                              -------   -------
PROPERTIES AND EQUIPMENT
Original cost (includes unproved properties of $3,085 and
  $3,573 as of December 31, 2002 and 2001, respectively)       22,595    20,088
Less accumulated depreciation, depletion and amortization       7,497     6,451
                                                              -------   -------
Net properties and equipment -- based on the full cost
  method of accounting for oil and gas properties              15,098    13,637
                                                              -------   -------
OTHER ASSETS                                                      436       503
                                                              -------   -------
GOODWILL                                                        1,434     1,430
                                                              -------   -------
TOTAL ASSETS                                                  $18,248   $16,771
                                                              -------   -------
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable                                              $ 1,050   $ 1,132
Accrued expenses                                                  511       257
Current portion, notes and debentures                             300       412
                                                              -------   -------
Total                                                           1,861     1,801
                                                              -------   -------
LONG-TERM DEBT                                                  5,171     4,638
                                                              -------   -------
OTHER LONG-TERM LIABILITIES
Deferred income taxes                                           3,633     3,451
Other                                                             611       516
                                                              -------   -------
Total                                                           4,244     3,967
                                                              -------   -------
STOCKHOLDERS' EQUITY
Preferred stock, par value $1.00 per share
  (2.0 million shares authorized, 0.1 million shares issued
    as of December 31, 2002 and 2001)                             101       103
Common stock, par value $0.10 per share
  (450.0 million shares authorized, 254.6 million and 254.1
    million shares issued as of December 31, 2002 and 2001,
    respectively)                                                  25        25
Paid-in capital                                                 5,347     5,336
Retained earnings                                               2,021     1,276
Treasury stock (3.2 million and 2.2 million shares as of
  December 31, 2002 and 2001, respectively)                      (166)     (116)
Deferred compensation and ESOP (0.7 million and 0.9 million
  shares as of December 31, 2002 and 2001, respectively)          (63)      (96)
Executives and Directors Benefits Trust, at market value
  (2.0 million shares as of December 31, 2002 and 2001)           (95)     (114)
Accumulated other comprehensive loss
  Unrealized loss on derivative instruments                       (85)       --
  Foreign currency translation adjustments                        (37)      (46)
  Minimum pension liability                                       (76)       (3)
                                                              -------   -------
  Total                                                          (198)      (49)
                                                              -------   -------
Total                                                           6,972     6,365
                                                              -------   -------
COMMITMENTS AND CONTINGENCIES                                      --        --
                                                              -------   -------
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                    $18,248   $16,771
                                                              -------   -------

See accompanying notes to consolidated financial statements.

57

ANADARKO PETROLEUM CORPORATION
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

                                                               YEARS ENDED DECEMBER 31
                                                              --------------------------
                                                               2002      2001      2000
                          millions                            ------    ------    ------
PREFERRED STOCK
Balance at beginning of year                                  $  103    $  200    $  200
Preferred stock repurchased                                       (2)      (97)       --
                                                              ------    ------    ------
Balance at end of year                                           101       103       200
                                                              ------    ------    ------
COMMON STOCK
Balance at beginning of year                                      25        25        13
Common stock issued                                               --        --        12
                                                              ------    ------    ------
Balance at end of year                                            25        25        25
                                                              ------    ------    ------
PAID-IN CAPITAL
Balance at beginning of year                                   5,336     5,303       634
Common stock and common stock put options issued                  30        51     4,592
Revaluation to market for Executives and Directors Benefits
  Trust                                                          (19)      (31)       77
Preferred stock repurchased                                       --        13        --
                                                              ------    ------    ------
Balance at end of year                                         5,347     5,336     5,303
                                                              ------    ------    ------
RETAINED EARNINGS
Balance at beginning of year                                   1,276     1,521       764
Net income (loss)                                                831      (181)      807
Dividends paid -- preferred                                       (6)       (7)      (11)
Dividends paid -- common                                         (80)      (57)      (39)
                                                              ------    ------    ------
Balance at end of year                                         2,021     1,276     1,521
                                                              ------    ------    ------
TREASURY STOCK
Balance at beginning of year                                    (116)       --        --
Purchase of treasury stock                                       (50)     (116)       --
                                                              ------    ------    ------
Balance at end of year                                          (166)     (116)       --
                                                              ------    ------    ------
DEFERRED COMPENSATION AND ESOP
Balance at beginning of year                                     (96)     (121)       (8)
Issuance of restricted stock                                      (7)      (15)      (82)
Acquisition of ESOP                                               --        --       (74)
Amortization of restricted stock and release of ESOP shares       40        40        43
                                                              ------    ------    ------
Balance at end of year                                           (63)      (96)     (121)
                                                              ------    ------    ------
EXECUTIVES AND DIRECTORS BENEFITS TRUST
Balance at beginning of year                                    (114)     (145)      (68)
Revaluation to market                                             19        31       (77)
                                                              ------    ------    ------
Balance at end of year                                           (95)     (114)     (145)
                                                              ------    ------    ------
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance at beginning of year                                     (49)        3        --
Unrealized loss on derivative instruments                        (85)       --        --
Foreign currency translation adjustments                           9       (49)        3
Minimum pension liability                                        (73)       (3)       --
                                                              ------    ------    ------
Balance at end of year                                          (198)      (49)        3
                                                              ------    ------    ------
TOTAL STOCKHOLDERS' EQUITY                                    $6,972    $6,365    $6,786
                                                              ------    ------    ------

See accompanying notes to consolidated financial statements.

58

ANADARKO PETROLEUM CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

                                                              YEARS ENDED DECEMBER 31
                                                              ------------------------
                                                              2002      2001      2000
                          millions                            -----     -----     ----
NET INCOME (LOSS) AVAILABLE TO COMMON STOCKHOLDERS            $ 825     $(188)    $796
Add: Preferred Stock Dividends                                    6         7       11
                                                              -----     -----     ----
NET INCOME (LOSS) AVAILABLE TO COMMON STOCKHOLDERS BEFORE
  PREFERRED STOCK DIVIDENDS                                     831      (181)     807
                                                              -----     -----     ----
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES
Unrealized gain (loss) on derivative instruments:
  Cumulative effect of accounting change(1)                      --        (5)      --
  Reclassification of cumulative effect of accounting change
     included in net income(2)                                   --         4       --
  Unrealized gain (loss) during the period(3)                  (100)       32       --
  Reclassification adjustment for (gain) loss included in
     net income(4)                                               15       (31)      --
                                                              -----     -----     ----
  Total unrealized loss on derivative instruments               (85)       --       --
Foreign currency translation adjustments                          9       (49)       3
Minimum pension liability(5)                                    (73)       (3)      --
                                                              -----     -----     ----
Total                                                          (149)      (52)       3
                                                              -----     -----     ----
COMPREHENSIVE INCOME (LOSS)                                   $ 682     $(233)    $810
                                                              -----     -----     ----

(1)net of income tax benefit (expense) of:                    $  --     $   3     $ --
(2)net of income tax benefit (expense) of:                       --        (2)      --
(3)net of income tax benefit (expense) of:                       58       (19)      --
(4)net of income tax benefit (expense) of:                       (9)       18       --
(5)net of income tax benefit (expense) of:                       42         1       --

See accompanying notes to consolidated financial statements.

59

ANADARKO PETROLEUM CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                              YEARS ENDED DECEMBER 31
                                                              ---------------------------
                                                               2002      2001      2000
                          millions                            -------   -------   -------
CASH FLOW FROM OPERATING ACTIVITIES
Net income (loss) before cumulative effect of change in
  accounting principle                                        $   831   $  (176)  $   824
Adjustments to reconcile net income (loss) before cumulative
  effect of change in accounting principle to net cash
  provided by operating activities:
     Depreciation, depletion and amortization                   1,134     1,170       627
     Amortization of goodwill                                      --        73        31
     Interest expense -- zero coupon debentures                    13        13        10
     Deferred income taxes                                        214      (319)      457
     Impairments related to oil and gas properties                 39     2,546        50
     Other non-cash items                                         (19)      122      (124)
                                                              -------   -------   -------
                                                                2,212     3,429     1,875
(Increase) decrease in accounts receivable                       (103)      544      (703)
Increase (decrease) in accounts payable and accrued expenses      181      (534)      415
Other items -- net                                                (94)     (118)      (51)
                                                              -------   -------   -------
Net cash provided by operating activities                       2,196     3,321     1,536
                                                              -------   -------   -------
CASH FLOW FROM INVESTING ACTIVITIES
Additions to properties and equipment                          (2,388)   (3,316)   (1,708)
Acquisition costs, net of cash acquired                          (221)     (940)      (53)
Sales and retirements of properties and equipment                 192       138        61
                                                              -------   -------   -------
Net cash used in investing activities                          (2,417)   (4,118)   (1,700)
                                                              -------   -------   -------
CASH FLOW FROM FINANCING ACTIVITIES
Additions to debt                                               1,348     2,788       345
Retirements of debt                                              (987)   (1,977)     (321)
Increase (decrease) in accounts payable, banks                    (43)       24        56
Dividends paid                                                    (86)      (64)      (50)
Retirement of preferred stock                                      (2)      (84)       --
Purchase of treasury stock                                        (50)     (116)       --
Issuance of common stock and common stock put options              40        49       288
                                                              -------   -------   -------
Net cash provided by financing activities                         220       620       318
                                                              -------   -------   -------
EFFECT OF EXCHANGE RATE CHANGES ON CASH                            (2)       15        --
                                                              -------   -------   -------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS               (3)     (162)      154
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR                     37       199        45
                                                              -------   -------   -------
CASH AND CASH EQUIVALENTS AT END OF YEAR                      $    34   $    37   $   199
                                                              -------   -------   -------

See accompanying notes to consolidated financial statements.

60

ANADARKO PETROLEUM CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

GENERAL Anadarko Petroleum Corporation is engaged in the exploration, development, production and marketing of natural gas, crude oil, condensate and natural gas liquids (NGLs). The Company also engages in the hard minerals business through non-operated joint ventures and royalty arrangements in several coal, trona (natural soda ash) and industrial mineral mines. The terms "Anadarko" and "Company" refer to Anadarko Petroleum Corporation and its subsidiaries.

PRINCIPLES OF CONSOLIDATION AND USE OF ESTIMATES The consolidated financial statements include the accounts of Anadarko and its subsidiaries. All significant intercompany transactions have been eliminated. The Company accounts for investments in affiliated companies (generally 20% to 50% owned) using the equity method of accounting. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America. Certain amounts for prior periods have been reclassified to conform to the current presentation. In preparing financial statements, Management makes informed judgments and estimates that affect the reported amounts of assets and liabilities as of the date of the financial statements and affect the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, Management reviews its estimates, including those related to litigation, environmental liabilities, income taxes and determination of proved reserves. Changes in facts and circumstances may result in revised estimates and actual results may differ from these estimates.

CHANGES IN ACCOUNTING PRINCIPLES During 2002, the Company adopted Emerging Issues Task Force (EITF) Issue No. 02-3, "Issues Involved in Accounting for Derivative Contracts Held for Trading Purposes and Contracts Involved in Energy Trading and Risk Management Activities." In accordance with EITF Issue No. 02-3, marketing sales and purchases resulting in physical settlement for prior periods have been reclassified to show net marketing margins as revenues. The marketing margins related to the Company's equity production are included in gas sales, oil and condensate sales and natural gas liquids sales and are reflected in commodity prices. The marketing margin related to purchases of third-party commodities is included in other sales. This reclassification had no effect on reported net income or cash flow.
In 2002, the Company discontinued the amortization of goodwill in accordance with Statement of Financial Accounting Standards (SFAS) No. 142, "Goodwill and Other Intangible Assets." See Note 3.
In 2002, the Company adopted the disclosure provisions of SFAS No. 148, "Accounting for Stock-Based Compensation -- Transition and Disclosure." See Note 2.
In 2001, the Company adopted SFAS No. 133, "Accounting for Derivative Instruments and Hedging Activities," which provides guidance for accounting for derivative instruments and hedging activities. The related cumulative adjustment to net income was a decrease of $8 million ($5 million after taxes, or $0.02 per share) and the cumulative adjustment to accumulated other comprehensive income was a decrease of $8 million ($5 million after taxes) in 2001.
In 2000, the Company changed its method of accounting for the carrying value of foreign crude oil inventories from market to cost. This change was made as a result of a change in position on the carrying value of inventories communicated by the United States Securities and Exchange Commission (SEC). The related adjustment to net income was a decrease of $19 million ($17 million after taxes, or $0.09 per share) in 2000.

PROPERTIES AND EQUIPMENT The Company uses the full cost method of accounting for exploration and development activities as defined by the SEC. Under this method of accounting, the costs for unsuccessful, as well as successful, exploration and development activities are capitalized as properties and equipment. This includes any internal costs that are directly related to exploration and development activities but does not include any costs related to production, general corporate overhead or similar activities. Gain or loss on the sale or other disposition of oil and gas properties is not recognized, unless the gain or loss would significantly alter the relationship between capitalized costs and proved reserves of oil and natural gas attributable to a country.
The sum of net capitalized costs and estimated future development and abandonment costs of oil and gas properties and mineral investments are amortized using the unit-of-production method. All other properties are

61

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

stated at original cost and are depreciated on the straight-line basis over the useful life of the assets, which ranges from three to 40 years. Properties and equipment carrying values do not purport to represent replacement or market values.
Operating fees received related to the properties in which the Company owns an interest are netted against operating expenses. Fees received in excess of costs incurred are recorded as a reduction to the full cost pool.

COSTS EXCLUDED Oil and gas properties include costs that are excluded from capitalized costs being amortized. These amounts represent costs of investments in unproved properties and major development projects. Anadarko excludes these costs on a country-by-country basis until proved reserves are found or until it is determined that the costs are impaired. All costs excluded are reviewed quarterly to determine if impairment has occurred. The amount of any impairment is transferred to the costs to be amortized (the depreciation, depletion and amortization (DD&A) pool) or a charge is made against earnings for those international operations where a reserve base has not yet been established. For international operations where a reserve base has not yet been established, an impairment requiring a charge to earnings may be indicated through evaluation of drilling results, relinquishing drilling rights or other information. Costs excluded for oil and gas properties are generally classified and evaluated as significant or individually insignificant properties.
Significant properties, comprised primarily of costs associated with domestic offshore blocks, Alaska, the Land Grant and other international areas, are individually evaluated each quarter by the Company's exploration and engineering staff. Non-producing leases are evaluated based on the progress of the Company's exploration program to date. Exploration costs are transferred to the DD&A pool upon completion of drilling individual wells. The Company has a 10 to 15 year exploration and evaluation program for the Land Grant acreage. Costs will be transferred accordingly to the DD&A pool over the length of the program. The Land Grant's mineral interests (both working and royalty interests) are owned by the Company in perpetuity. All other significant properties are evaluated over a five- to ten-year period, depending on the lease term.
Insignificant properties are comprised primarily of costs associated with onshore properties in the United States and Canada. Non-producing leases are transferred to the DD&A pool over a three- to five-year period based on the average lease period. Exploration costs are transferred to the DD&A pool upon completion of evaluation.

CAPITALIZED INTEREST SFAS No. 34, "Capitalization of Interest Cost," provides standards for the capitalization of interest cost as part of the historical cost of acquiring assets. Under Financial Accounting Standards Board Interpretation (FIN) No. 33, "Applying FASB Statement No. 34 to Oil and Gas Producing Operations Accounted for by the Full Cost Method," costs of investments in unproved properties and major development projects, on which DD&A expense is not currently taken and on which exploration or development activities are in progress, qualify for capitalization of interest. Capitalized interest is calculated by multiplying the Company's weighted-average interest rate on debt by the amount of qualifying costs excluded. Capitalized interest cannot exceed gross interest expense. As costs excluded are transferred to the DD&A pool, the associated capitalized interest is also transferred to the DD&A pool.

CEILING TEST Under the full cost method of accounting, a ceiling test is performed each quarter. The full cost ceiling test is an impairment test prescribed by SEC Regulation S-X Rule 4-10. The ceiling test determines a limit, on a country-by-country basis, on the book value of oil and gas properties. The capitalized costs of proved oil and gas properties, net of accumulated DD&A and the related deferred income taxes, may not exceed the estimated future net cash flows from proved oil and gas reserves, generally using prices in effect at the end of the period held flat for the life of production, discounted at 10%, net of related tax effects, plus the cost of unevaluated properties and major development projects excluded from the costs being amortized. If capitalized costs exceed this limit, the excess is charged to expense and reflected as additional accumulated DD&A.
Proved oil and gas reserves, as defined by SEC Regulation S-X Rule 4-10(a)(2i), (2ii), (2iii), (3) and (4), are the estimated quantities of crude oil, natural gas, and NGLs which geological and engineering data demonstrate

62

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions, i.e., prices and costs as of the date the estimate is made. Prices include consideration of changes in existing prices provided only by contractual arrangements, but not on escalations based upon future conditions. Prices do not include the effect of derivative instruments entered into by the Company.
Proved developed oil and gas reserves are reserves that can be expected to be recovered through existing wells with existing equipment and operating methods. Additional oil and gas expected to be obtained through the application of fluid injection or other improved recovery techniques for supplementing the natural forces and mechanisms of primary recovery are included as proved developed reserves only after testing by a pilot project or after the operation of an installed program has confirmed through production response that increased recovery will be achieved.
Proved undeveloped oil and gas reserves are reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion. Reserves on undrilled acreage are limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved reserves for other undrilled units are claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation.
The Company emphasizes that the volumes of reserves are estimates which, by their nature, are subject to revision. The estimates are made using all available geological and reservoir data, as well as production performance data. These estimates, made by the Company's engineers, are reviewed and revised, either upward or downward, as warranted by additional data. Revisions are necessary due to changes in assumptions based on, among other things, reservoir performance, prices, economic conditions and governmental restrictions. Decreases in prices, for example, may cause a reduction in some proved reserves due to uneconomic conditions.

REVENUES The Company recognizes sales revenues based on the amount of gas, oil and NGLs sold to purchasers when delivery to the purchaser has occurred and title has transferred. This occurs when production has been delivered to a pipeline or a tanker lifting has occurred. The Company follows the sales method of accounting for production imbalances. If the Company's excess sales of production volumes for a well exceed the estimated remaining recoverable reserves of the well, a liability is recorded. No receivables are recorded for those wells on which the Company has taken less than its ownership share of production. Marketing margins related to the Company's equity production are included in gas sales, oil and condensate sales and natural gas liquids sales and are reflected in commodity prices. The marketing margin related to purchases of third-party commodities is included in other sales.

DERIVATIVE INSTRUMENTS Anadarko uses derivative instruments for various risk management purposes. Effective January 2001, derivative instruments utilized to manage or reduce commodity price risk related to the Company's equity production are accounted for under the provisions of SFAS No. 133. Under this statement, all derivatives are carried on the balance sheet at fair value. Realized gains and losses are recognized in sales when the underlying physical gas and oil production is sold. Accordingly, realized derivative gains and losses are generally offset by similar changes in the realized value of the underlying physical gas and oil production. Realized derivative gains and losses are reflected in the average sales price of the physical gas and oil production.
Accounting for unrealized gains and losses is dependent on whether the derivative instruments have been designated and qualify as part of a hedging relationship. Derivative instruments may be designated as a hedge of exposure to changes in fair values, cash flows or foreign currencies, if certain conditions are met. Unrealized gains and losses on derivative instruments that do not meet the conditions to qualify for hedge accounting are recognized currently in other (income) expense.
If the hedged exposure is to change in fair value, the gains and losses on the derivative instrument, as well as the offsetting losses and gains on the hedged item, are recognized currently in earnings. Consequently, if gains and losses on the derivative instrument and the related hedge item do not completely offset, the difference (i.e., ineffective portion of the hedge) is recognized currently in earnings.

63

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

If the hedged exposure is a cash flow exposure, the effective portion of the gains and losses on the derivative instrument is reported as a component of accumulated other comprehensive income and reclassified into earnings in the same period or periods during which the hedged forecasted transaction affects earnings. The ineffective portion of the gains and losses from the derivative instrument, if any, as well as any amounts excluded from the assessment of the cash flow hedges' effectiveness are recognized currently in other (income) expense.
Derivative instruments, as well as physical delivery purchase and sale contracts, utilized in the Company's energy trading activities and in the management of price risk associated with the Company's firm transportation keep-whole commitment were accounted for under the mark-to-market accounting method pursuant to EITF Issue No. 98-10, "Accounting for Contracts Involved in Energy Trading and Risk Management Activities." Under this method, the derivatives and physical delivery contracts are revalued in each accounting period and unrealized gains and losses are recorded in the statement of income and carried as assets or liabilities on the balance sheet. EITF Issue No. 98-10 was rescinded in October 2002. See New Accounting Principles.
The Company's derivative instruments associated with the marketing and trading activities are generally either exchange traded or valued by reference to a commodity that is traded in a liquid market. Valuation is determined by reference to readily available public data. Option valuations are based on the Black-Scholes option pricing model and verified against third-party quotations. The fair value of the short-term portion of the firm transportation keep-whole agreement is calculated with quoted natural gas basis prices, while the fair value of the long-term portion is estimated based on historical natural gas basis prices, discounted at 10% per year. See Note 8.
Prior to 2001, derivative instruments utilized to manage or reduce commodity price risk related to the Company's equity production (with the exception of net written options) were accounted for under the hedge or deferral method of accounting. Under this method, realized gains and losses and option premiums were recognized in the statement of income when the underlying physical oil and gas production was sold. Accordingly, realized gains and losses were generally offset by similar changes in the realized prices of the underlying physical oil and gas production. Realized derivative gains and losses were reflected in the average sales price of the physical oil and gas production. Margin deposits, deferred realized gains and losses and premiums were included in other current assets or liabilities. Unrealized gains and losses were not recorded.

INVENTORIES Materials and supplies and company-produced commodity inventories are stated at the lower of average cost or market. Prior to October 25, 2002, inventories consisting of commodities purchased from third parties utilized in the Company's energy trading activities were carried at fair value. Company-produced commodities, when sold from inventory, were charged to expense using the average-cost method. Commodities purchased from third parties, when sold from inventory, were charged to expense using market price. Due to the recission of EITF Issue No. 98-10, commodities purchased from third parties after October 25, 2002 are accounted for at the lower of average-cost or market. See New Accounting Principles.

GOODWILL Goodwill represents the excess of the purchase price over the estimated fair value of the assets acquired and liabilities assumed in the merger with Union Pacific Resources Group Inc., subsequently renamed Anadarko Holding Company (Anadarko Holding), and the acquisition of Berkley Petroleum Corp. (Berkley). For 2000 and 2001, goodwill was amortized on a straight-line basis over 20 years. Prior to the adoption of SFAS No. 142, the Company assessed the recoverability of goodwill by determining whether the amortization of the goodwill balance over its remaining life could be recovered through undiscounted future operating cash flows of the acquired operations. The amount of goodwill impairment, if any, would have been measured based on projected discounted future operating cash flows using a discount rate reflecting the Company's average cost of funds. In accordance with the adoption of SFAS No. 142, the Company assesses the carrying amount of goodwill by testing the goodwill for impairment. The impairment test requires allocating goodwill and all other assets and liabilities to reporting units. The fair value of each reporting unit is determined and compared to the book value of the reporting unit. If the fair value of the reporting unit is less than the book value, including goodwill, then the

64

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

goodwill is written down to the implied fair value of the goodwill through a charge to expense. Also under SFAS No. 142, goodwill is no longer amortized effective January 2002. See Note 3.

LEGAL CONTINGENCIES The Company is subject to legal proceedings, claims and liabilities which arise in the ordinary course of its business. The Company accrues for losses associated with legal claims when such losses are probable and can be reasonably estimated. These accruals are adjusted as further information develops or circumstances change. See Note 19.

ENVIRONMENTAL CONTINGENCIES The Company accrues for losses associated with environmental remediation obligations when such losses are probable and can be reasonably estimated. Accruals for estimated losses from environmental remediation obligations generally are recognized no later than the time of the completion of the remedial feasibility study. These accruals are adjusted as further information develops or circumstances change. Costs of future expenditures for environmental remediation obligations are not discounted to their present value. Recoveries of environmental remediation costs from other parties are recorded as assets when their receipt is deemed probable. See Note 19.

INCOME TAXES The Company files various United States federal, state and foreign income tax returns. Deferred federal, state and foreign income taxes are provided on all significant temporary differences, except for those essentially permanent in duration, between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.

CASH EQUIVALENTS The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

STOCK-BASED COMPENSATION The Company accounts for stock-based compensation under the intrinsic value method. Under this method, the Company records no compensation expense for stock options granted to employees or directors when the exercise price of options granted is equal to or above the fair market value of Anadarko's common stock on the date of grant. See Notes 2 and 10.

EARNINGS PER SHARE The Company's basic earnings (loss) per share (EPS) amounts have been computed based on the average number of shares of common stock outstanding for the period. Diluted EPS amounts include the effect of the Company's outstanding stock options and performance-based stock awards under the treasury stock method and outstanding put options under the reverse treasury stock method, if including such equity instruments is dilutive. Diluted EPS amounts also include the net effect of the Company's convertible debentures and Zero Yield Puttable Contingent Debt Securities (ZYP-CODES) assuming the conversions occurred at the beginning of the year or the date of issuance, if including such potential common shares is dilutive. See Note 10.

NEW ACCOUNTING PRINCIPLES SFAS No. 143, "Accounting for Asset Retirement Obligations," requires the fair value of a liability for an asset retirement obligation to be recorded in the period in which it is incurred and a corresponding increase in the carrying amount of the related long-lived asset and is effective for the Company in 2003. The Company has evaluated the impact of SFAS No. 143 and expects to record an after tax gain of between $35 million and $55 million as a cumulative effect of change in accounting principle. Additionally, the Company expects to record an asset retirement obligation liability of between $220 million and $330 million and an increase to net properties and equipment of between $270 million and $410 million. The application of SFAS No. 143 in 2003 and future years will result in the recognition of accretion expense related to the discounted liability for the asset retirement obligation and should not have a material impact on the Company's DD&A rate. There will be no impact on the Company's cash flow as a result of adopting SFAS No. 143.
SFAS No. 145, "Rescission of FASB Statements No. 4, 44 and 64," was issued in April 2002. SFAS No. 145 provides guidance for income statement classification of gains and losses on extinguishment of debt and accounting for certain lease modifications that have economic effects that are similar to sale-leaseback

65

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

transactions. SFAS No. 145 is effective for the Company in 2003. The Company has evaluated the impact of SFAS No. 145 and does not expect adoption to materially affect the consolidated financial statements.
SFAS No. 146, "Accounting for Costs Associated with Exit or Disposal Activities," was issued in June 2002. SFAS No. 146 addresses significant issues regarding the recognition, measurement and reporting of costs that are associated with exit and disposal activities, including restructuring activities. SFAS No. 146 is effective for the Company in 2003. The Company has evaluated the impact of SFAS No. 146 and does not expect adoption to materially affect the consolidated financial statements.
SFAS No. 148 was issued in December 2002. SFAS No. 148 provides alternative methods of transition for a voluntary change to the fair value based method of accounting for stock-based employee compensation and amends the disclosure requirements of SFAS No. 123, "Accounting for Stock-Based Compensation." The Company adopted the disclosure provisions in 2002 and plans to voluntarily change in 2003 to the fair value based method of accounting for stock-based employee compensation using the prospective method described in SFAS No. 148.
EITF Issue No. 98-10 was rescinded in 2002. As a result, mark-to-market accounting is precluded for commodity inventories and energy trading contracts that are not derivatives pursuant to SFAS No. 133. The recission of EITF Issue No. 98-10 is effective for commodity inventories acquired and contracts entered into subsequent to October 25, 2002 and for all commodity inventories held and contracts in effect on January 1, 2003. Substantially all of the Company's physical delivery energy trading contracts are considered to be derivatives pursuant to SFAS No. 133. Therefore, the recission of EITF Issue No. 98-10 did not have a significant impact on the accounting for energy trading contracts as those contracts continue to be marked to market in accordance with SFAS No. 133.
FIN No. 45, "Guarantor's Accounting and Disclosure Requirements for Guarantees," was issued in November 2002. This interpretation addresses the disclosures to be made by a guarantor in its interim and annual financial statements about its obligations under guarantees. It also clarifies the requirements related to the recognition of a liability by a guarantor at the inception of a guarantee for the obligations the guarantor has undertaken in issuing that guarantee. The Company has adopted the disclosure provisions in 2002. See Notes 17 and 19. The initial recognition and initial measurement provisions are applicable to guarantees issued or modified in 2003 and are not expected to have a material impact on the Company's consolidated financial statements.
FIN No. 46, "Consolidation of Variable Interest Entities," was issued in January 2003. FIN No. 46 addresses consolidation by business enterprises of variable interest entities. It applies immediately to variable interest entities created after January 31, 2003. For entities created prior to this date, FIN No. 46 is effective for the third quarter 2003. The Company is evaluating the impact of FIN No. 46 on accounting for and the possible restructuring of its synthetic leases. See Note 17. If the synthetic leases are not restructured prior to July 2003, the current synthetic lease related entities will be consolidated with the Company. The Company believes this would increase properties and equipment by $220 million with a corresponding increase in long-term debt of $232 million. Any impact on the income statement would be a cumulative effect adjustment equal to the difference between the fair value of the assets and liabilities recorded related to the consolidated variable interest entities and is not expected to be material.

2. STOCK-BASED COMPENSATION

SFAS No. 123 defines a fair value method of accounting for an employee stock option or similar equity instrument. SFAS No. 123 allows an entity to continue to measure compensation costs for these plans using Accounting Principles Board (APB) Opinion No. 25. Anadarko applies APB No. 25 in accounting for employee stock compensation plans whereby no compensation expense is recognized for stock options granted with an exercise price equal to the market value of Anadarko stock on the date of grant. If compensation expense for the

66

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

2. STOCK-BASED COMPENSATION (CONTINUED)

Company's stock option plans had been determined using the fair-value method in SFAS No. 123, the Company's net income and EPS would have been as shown in the pro forma amounts below:

                                                              2002     2001    2000
millions except per share amounts                             -----   ------   -----
Net income (loss) available to common stockholders
  before cumulative effect of change in accounting principle  $ 825   $ (183)  $ 813
Add: Stock-based employee compensation expense included in
  net income, after taxes                                         9       10      21
Deduct: Total stock-based employee compensation expense
  determined under the fair value method, after taxes           (32)     (52)    (58)
                                                              -----   ------   -----
Pro forma net income (loss)                                   $ 802   $ (225)  $ 776
                                                              -----   ------   -----
Basic EPS - as reported                                       $3.32   $(0.73)  $4.42
Basic EPS - pro forma                                         $3.23   $(0.90)  $4.22
Diluted EPS - as reported                                     $3.21   $(0.73)  $4.25
Diluted EPS - pro forma                                       $3.13   $(0.90)  $4.05

The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:

                                                              2002       2001       2000
                                                              -----      -----      -----
Expected option life - years                                   5.29       4.14       4.35
Risk-free interest rate                                        3.73%      4.48%      6.10%
Dividend yield                                                 0.51%      0.46%      0.50%
Volatility                                                    41.66%     43.79%     39.17%

3. GOODWILL

SFAS No. 142 required discontinuing amortization of goodwill after year-end 2001 and requires that goodwill be tested for impairment. The impairment test requires allocating goodwill and all other assets and liabilities to business levels referred to as reporting units. The fair value of each reporting unit that has goodwill is determined and compared to the book value of the reporting unit. If the fair value of the reporting unit is less than the book value (including goodwill) then a second test is performed to determine the amount of the impairment.
If the second test is necessary, the fair value of the reporting unit's individual assets and liabilities is deducted from the fair value of the reporting unit. This difference represents the implied fair value of goodwill, which is compared to the book value of the reporting unit's goodwill. Any excess of the book value of goodwill over the implied fair value of goodwill is the amount of the impairment.
The goodwill impairment test is performed annually, and also at interim dates upon the occurrence of significant events. Significant events include: a significant adverse change in legal factors or business climate; an adverse action or assessment by a regulator; a more-likely-than-not expectation that a reporting unit or significant portion of a reporting unit will be sold; significant adverse trends in current and future oil and gas prices; nationalization of any of the Company's oil and gas properties; or, significant increases in a reporting unit's carrying value relative to its fair value.
In January 2002, the Company discontinued the amortization of goodwill in accordance with SFAS No. 142. The transitional goodwill impairment test as of January 2002 was performed and no goodwill impairment was indicated. The annual goodwill impairment test was performed as of January 2003 and no goodwill impairment was indicated. The following table shows the effect of the elimination of amortization of goodwill on the

67

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

3. GOODWILL (CONTINUED)

Company's net income and net income per share as if SFAS No. 142 had been in effect in prior periods. Prior to 2000, the Company had no goodwill or goodwill amortization recorded.

                                                               2001    2000
millions except per share amounts                             ------   -----
Net income (loss)                                             $ (188)  $ 796
Add: Goodwill amortization                                        73      31
                                                              ------   -----
Adjusted net income (loss)                                    $ (115)  $ 827
                                                              ------   -----
Earnings (loss) per share -- basic                            $(0.75)  $4.32
Goodwill amortization per share -- basic                        0.29    0.17
                                                              ------   -----
Adjusted earnings (loss) per share -- basic                   $(0.46)  $4.49
                                                              ------   -----
Earnings (loss) per share -- diluted                          $(0.75)  $4.16
Goodwill amortization per share -- diluted                      0.29    0.16
                                                              ------   -----
Adjusted earnings (loss) per share -- diluted                 $(0.46)  $4.32
                                                              ------   -----

The changes in goodwill since December 31, 2001 are due primarily to changes in foreign currency exchange rates. Future changes in goodwill may result from, among other things, changes in foreign currency exchange rates, changes in deferred income tax liabilities related to acquisitions, divestitures, impairments or future acquisitions.

4. MERGER AND ACQUISITIONS

In July 2000, the Company merged with Union Pacific Resources Group Inc., subsequently renamed Anadarko Holding Company. Each share of common stock of Anadarko Holding issued and outstanding was converted into 0.455 shares of Anadarko common stock. The merger was a tax-free reorganization and accounted for as a purchase business combination under generally accepted accounting principles. Under this method of accounting, the Company's historical operating results for periods prior to the merger are the same as Anadarko's historical operating results. At the date of the merger, the assets and liabilities of Anadarko remained based upon their historical costs, and the assets and liabilities of Anadarko Holding were recorded at their estimated fair market values.
Had the Anadarko Holding merger transaction occurred on January 1, 2000, unaudited pro forma results of the Company would have included revenues of $4.1 billion and net income available to common stockholders of $1.1 billion ($4.45 per share -- basic and $4.30 per share -- diluted) for the year ended December 31, 2000. The pro forma results for 2000 are a result of combining the statement of income of Anadarko with the statement of income of Anadarko Holding adjusted for (1) certain costs that Anadarko Holding had expensed under the successful efforts method of accounting that are capitalized under the full cost method of accounting; (2) DD&A expense of Anadarko Holding calculated in accordance with the full cost method of accounting applied to the adjusted basis of the properties acquired using the purchase method of accounting; (3) decreases to interest expense for the capitalization of interest on significant investments in unevaluated properties and major development projects and partly offset by the revaluation of Anadarko Holding debt under the purchase method of accounting, including the elimination of historical debt issuance amortization costs; (4) issuance of Anadarko common stock and stock options pursuant to the merger agreement; and (5) the related income tax effects of these adjustments based on the applicable statutory tax rates. It should be noted that the pro forma results do not include any merger expenses and are not necessarily indicative of actual results.
In March 2001, Anadarko acquired Canadian based Berkley for C$11.40 per share for an aggregate equity value of $779 million plus the assumption of $236 million of debt. Goodwill recorded related to the Berkley acquisition was $245 million.
In August 2001, the Company completed the acquisition of Gulfstream Resources Canada Limited (Gulfstream). The Gulfstream shares were purchased for C$2.65 per share, for a total value of $118 million plus the assumption of $10 million of debt.

68

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

4. MERGER AND ACQUISITIONS (CONTINUED)

In December 2002, the Company completed the acquisition of Howell Corporation (Howell) in which the common stockholders of Howell received $20.75 per share and holders of Howell's $3.50 convertible preferred stock received $76.15 per share. The value of the acquisition was $258 million, including the assumption of $53 million of debt.
The unaudited pro forma results of operations including the acquisition transactions in 2002 and 2001 would not have been significantly different from actual results for 2002 and 2001.
Merger costs related to corporate acquisitions of $14 million, $45 million and $67 million for the years ended December 31, 2002, 2001 and 2000, respectively, were recorded as administrative and general expense. These costs relate primarily to the issuance of stock for retention of employees, deferred compensation, transition, integration, hiring and relocation costs, vesting of restricted stock and stock options and retention bonuses.

5. INVENTORIES

The major classes of inventories, which are included in other current assets, are as follows:

                                                              2002   2001
millions                                                      ----   ----
Materials and supplies                                        $ 75   $ 61
Natural gas                                                     16     18
Crude oil                                                       15     22
                                                              ----   ----
Total                                                         $106   $101
                                                              ----   ----

6. PROPERTIES AND EQUIPMENT

A summary of the original cost of properties and equipment by classification follows:

                                                               2002      2001
millions                                                      -------   -------
Oil and gas properties                                        $20,467   $18,047
Mineral properties                                              1,211     1,212
Gathering facilities                                              310       295
General properties                                                607       534
                                                              -------   -------
Total                                                         $22,595   $20,088
                                                              -------   -------

Oil and gas properties include costs of $3.1 billion and $3.6 billion at December 31, 2002 and 2001, respectively, which were excluded from capitalized costs being amortized. These amounts represent costs associated with unevaluated properties and major development projects. At December 31, 2002 and 2001, the Company's investment in countries where reserves have not been established was $63 million and $53 million, respectively.
During 2002, 2001 and 2000, the Company made provisions for impairments of U.S. and international properties of $39 million, $2.5 billion and $50 million, respectively, which were related to oil and gas properties. In 2002, the Company recorded international impairments of $39 million in Congo, Oman, Australia and Tunisia primarily due to unsuccessful exploration activities. As a result of low oil and gas prices at September 30, 2001, Anadarko's capitalized costs of oil and gas properties primarily in the United States, Canada and Argentina exceeded the ceiling limitation and the Company recorded a $2.5 billion ($1.6 billion after taxes) non-cash write-down in the third quarter of 2001. The pre-tax write-down is reflected as additional accumulated DD&A in the accompanying balance sheet. The remaining 2001 impairment of $18 million related to unsuccessful exploration activities in the United Kingdom and Ghana. In 2000, the Company recorded international impairments of $50 million for unsuccessful exploration activities in the United Kingdom, Tunisia and other international locations.

69

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

6. PROPERTIES AND EQUIPMENT (CONTINUED)

Total interest costs incurred during 2002, 2001 and 2000 were $358 million, $301 million and $193 million, respectively. Of these amounts, the Company capitalized $155 million, $209 million and $100 million during 2002, 2001 and 2000, respectively. Capitalized interest is included as part of the cost of oil and gas properties. The interest rates for capitalization are based on the Company's weighted average cost of borrowings used to finance the expenditures applied to costs excluded.
In addition to capitalized interest, the Company also capitalized internal costs of $196 million, $178 million and $124 million during 2002, 2001 and 2000, respectively. These internal costs were directly related to exploration and development activities and are included as part of the cost of oil and gas properties.

7. DEBT

A summary of debt follows:

                                                                2002                         2001
                                                     --------------------------   --------------------------
                                                     PRINCIPAL   CARRYING VALUE   PRINCIPAL   CARRYING VALUE
millions                                             ---------   --------------   ---------   --------------
Notes Payable, Banks*                                 $   44         $   44        $  228         $  228
Commercial Paper*                                        181            181           226            226
Long-term Portion of Capital Lease                         7              7             9              9
6.8% Debentures due 2002                                  --             --            88             88
6 3/4% Notes due 2003                                     73             73            73             73
5 7/8% Notes due 2003                                     83             83            83             83
6.5% Notes due 2005                                      170            166           170            164
7.375% Debentures due 2006                                88             87            88             87
7% Notes due 2006                                        174            171           174            170
5 3/8% Notes due 2007                                    650            647            --             --
6.75% Notes due 2008                                     116            111           116            110
7.8% Debentures due 2008                                  11             11            11             11
7.3% Notes due 2009                                       85             83            85             82
6 3/4% Notes due 2011                                    950            912           950            910
6 1/8% Notes due 2012                                    400            395            --             --
5% Notes due 2012                                        300            297            --             --
7.05% Debentures due 2018                                114            105           114            105
Zero Coupon Convertible Debentures due 2020              380            380           367            367
Zero Yield Puttable Contingent Debt Securities due
  2021                                                    30             30           650            650
7.5% Debentures due 2026                                 112            106           112            105
7% Debentures due 2027                                    54             54            54             54
6.625% Debentures due 2028                                17             17            17             17
7.15% Debentures due 2028                                235            212           235            212
7.20% Debentures due 2029                                135            135           135            135
7.95% Debentures due 2029                                117            117           117            117
7 1/2% Notes due 2031                                    900            862           900            862
7.73% Debentures due 2096                                 61             61            61             61
7 1/4% Debentures due 2096                                49             49            49             49
7.5% Debentures due 2096                                  83             75            83             75
                                                      ------         ------        ------         ------
Total debt                                            $5,619          5,471        $5,195          5,050
                                                      ------                       ------
Less current portion                                                    300                          412
                                                                     ------                       ------
Total long-term debt                                                 $5,171                       $4,638
                                                                     ------                       ------


* The average rates in effect at December 31, 2002 and 2001 were 1.57% and 2.55%, respectively, for Notes Payable, Banks. The average rates in effect at December 31, 2002 and 2001 were 1.88% and 2.59%, respectively, for Commercial Paper.

70

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

7. DEBT (CONTINUED)

The Company recorded debt discount of $11 million, $40 million and $116 million in 2002, 2001 and 2000, respectively, as a result of debt issuances, financial restructuring and corporate acquisitions. The unamortized debt discount of $148 million and $145 million as of December 31, 2002 and 2001, respectively, will be amortized over the terms of the debt issues.
Anadarko has noncommitted lines of credit from several banks. The general provisions of these lines of credit provide for Anadarko to borrow funds for terms and rates offered from time to time by the banks. There are no fees associated with these lines of credit.
The Company has commercial paper programs that allow Anadarko to borrow funds, at rates as offered, by issuing notes to investors for terms of up to one year.
At December 31, 2002, $761 million of notes, debentures and securities will mature or may be put to Anadarko within the next twelve months. In accordance with SFAS No. 6, "Classification of Short-term Obligations Expected to be Refinanced," $461 million of this amount is classified as long-term debt, since Anadarko has the intent and ability to refinance this debt under the terms of Anadarko's Bank Credit Agreements.
In March 2000, Anadarko issued $345 million of Zero Coupon Convertible Debentures due March 2020, with a face value at maturity of $690 million. The debentures were issued at a discount and accrue interest at 3.50% annually until reaching face value at maturity; however, interest will not be paid prior to maturity. The debentures were issued at an initial conversion premium of 40% and are convertible into Anadarko common stock at the option of the holder at any time at a fixed conversion rate of 11.6288 shares of common stock per debenture. Holders have the right to require Anadarko to repurchase their debentures at a specified price in March 2003, 2008 and 2013. The debentures are redeemable at the option of Anadarko after three years. The net proceeds from the offering were used to repay floating interest rate debt.
In March 2001, Anadarko issued $650 million of ZYP-CODES due 2021 to qualified institutional buyers under Rule 144A and non-U.S. persons under Regulation S. The debt securities were priced with a zero coupon, zero yield to maturity and a conversion premium of 38%. The proceeds from the debt securities, net of $6 million of debt offering expenses, were used initially to finance costs associated with the acquisition of Berkley. In March 2002, ZYP-CODES in the amount of $620 million were put to the Company for repayment and were paid in cash. The ZYP-CODES are convertible into Anadarko common stock at the option of the holder at any time at a fixed conversion rate of 9.9285 shares of common stock per $1,000 principal amount of ZYP-CODES. Holders of the remaining ZYP-CODES have the right to require Anadarko to purchase all or a portion of their ZYP-CODES in March 2004, 2006, 2011 or 2016, at $1,000 per ZYP-CODES.
In April 2001, Anadarko Finance Company, a wholly-owned finance subsidiary of Anadarko, issued $1.3 billion in notes to qualified institutional buyers under Rule 144A and non-U.S. persons under Regulation S. This issuance was made up of $400 million of 6 3/4% Notes due 2011 and $900 million of 7 1/2% Notes due 2031. In May 2001, Anadarko Finance Company issued an additional $550 million of 6 3/4% Notes due 2011, bringing the 6 3/4% Notes to an aggregate total of $950 million. The notes are fully and unconditionally guaranteed by Anadarko. The proceeds from the notes, net of $11 million in discounts, were used as part of an exchange of securities for other Anadarko debt. The intercompany debt resulting from these transactions is of a long-term investment nature; therefore, net foreign currency translation gains of $19 million and losses of $55 million for 2002 and 2001, respectively, were recorded as a component of other comprehensive income.
In February 2002, the Company issued $650 million principal amount of 5 3/8% Notes due 2007. In March 2002, the Company issued $400 million principal amount of 6 1/8% Notes due 2012. The net proceeds from these issuances were used to reduce floating rate debt and to fund a portion of the ZYP-CODES put to the Company for repayment in March 2002.
In April 2002, Anadarko filed a shelf registration statement with the SEC that permits the issuance of up to $1 billion in debt securities, preferred stock, preferred securities, depositary shares, common stock, warrants, purchase contracts and purchase units. Net proceeds, terms and pricing of the offerings of securities issued under the shelf registration statement will be determined at the time of the offerings.

71

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

7. DEBT (CONTINUED)

In September 2002, Anadarko issued $300 million principal amount of 5% Notes due 2012. The net proceeds from the issuance were used to reduce floating rate debt. These notes were issued under the shelf registration statement filed in April 2002.
In October 2002, the Company entered into a 364-Day Revolving Credit Agreement. The agreement provides for $225 million principal amount and expires in 2003. Also in October 2002, Anadarko Canada Corporation (Anadarko Canada), a wholly-owned subsidiary of Anadarko, entered into a 364-Day Canadian Credit Agreement. The agreement provides for $300 million principal amount and expires in 2003. The agreement is fully and unconditionally guaranteed by Anadarko. Interest rates for these bank commitments are based on either the prime rate, Fed Funds rate, London interbank borrowing rate or Bankers' Acceptance rate. In addition, the Company has a Revolving Credit Agreement that provides for $225 million principal amount and expires in 2004. As of December 31, 2002, the Company had no outstanding borrowings under these bank credit agreements.
At December 31, 2002 and 2001, a Canadian subsidiary had $98 million and $187 million, respectively, outstanding fixed-rate notes and debentures denominated in U.S. dollars. During 2002, 2001 and 2000, the Company recognized $5 million of gains, $25 million of losses and $8 million of losses, respectively, before taxes associated with the remeasurement of this debt.
Total sinking fund and installment payments related to debt for the five years ending December 31, 2007 are shown below. The payments related to a portion of the Commercial Paper are included in the amounts shown in a manner consistent with the terms for repayment of Anadarko's bank credit agreements.

millions
2003*                                                          $300
2004**                                                           30
2005                                                            170
2006                                                            262
2007                                                            650


* Holders of the Zero Coupon Convertible Debentures due 2020 had the right to put the debentures to the Company in March 2003 at the accrued value of $383 million. This debt instrument has not been reflected in the table above.

** Holders of the ZYP-CODES due 2021 may put the remaining $30 million principal amount of the ZYP-CODES to the Company in 2004.

72

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS

The following information provides the carrying value and estimated fair value of the Company's financial instruments:

                                                              CARRYING
                                                               AMOUNT    FAIR VALUE
millions                                                      --------   ----------
2002
Cash and cash equivalents                                      $   34      $   34
Total debt                                                      5,471       6,112
Commodity derivative instruments (including firm
  transportation keep-whole agreement)
  Asset                                                            85          85
  Liability                                                      (288)       (288)
Foreign currency derivative instruments                            (8)         (8)
2001
Cash and cash equivalents                                      $   37      $   37
Total debt                                                      5,050       5,170
Commodity derivative instruments (including firm
  transportation keep-whole agreement)
  Asset                                                           105         105
  Liability                                                      (217)       (217)
Foreign currency derivative instruments                           (10)        (10)

CASH AND CASH EQUIVALENTS The carrying amount reported on the balance sheet approximates fair value.

DEBT The fair value of debt at December 31, 2002 and 2001 is the value the Company would have to pay to retire the debt, including any premium or discount to the debt holder for the differential between stated interest rate and year-end market rate. The fair values are based on quoted market prices and, where such quotes were not available, on the average rate in effect at year-end.

COMMODITY DERIVATIVE INSTRUMENTS The Company is exposed to price risk from changing commodity prices. Management believes it is prudent to minimize the variability in cash flows on a portion of its oil and gas production. To meet this objective, the Company enters into various types of commodity derivative instruments to manage fluctuations in cash flows resulting from changing commodity prices. The Company also uses fixed price physical delivery sales contracts to accomplish this objective. The types of instruments utilized by the Company may include futures, swaps and options.
Anadarko also enters into commodity derivative instruments (options, futures and swaps) for trading purposes with the objective of generating profits from exposure to changes in the market price of natural gas and crude oil. Commodity derivative instruments are also used to meet customers' pricing requirements while achieving a price structure consistent with the Company's overall pricing strategy. In addition, the Company has used swap agreements to reduce exposure to losses on its firm transportation keep-whole commitment with Duke Energy Field Services, Inc. (Duke). Essentially all of the derivatives used for trading purposes have a term of less than one year, with most having a term of less than three months.
Futures contracts are generally used to fix the price of expected future oil and gas sales at major industry trading locations; e.g., Henry Hub, Louisiana for gas and Cushing, Oklahoma for oil. Settlements of futures contracts are guaranteed by the New York Mercantile Exchange (NYMEX) or the International Petroleum Exchange and have nominal credit risk. Swap agreements are generally used to fix or float the price of oil and gas at the Company's market locations. Swap agreements are also used to fix the price differential between the price of gas at Henry Hub and various other market locations. Swap agreements expose the Company to credit risk to

73

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS (CONTINUED)

the extent the counter-party is unable to meet its settlement commitment. The Company carefully monitors the creditworthiness of each counter-party. In addition, the Company routinely exercises its contractual right to net realized gains against realized losses in settling with its swap counterparties. Options are generally used to fix a floor and a ceiling price (a collar) for the Company's expected future oil and gas sales. The Company buys and sells options through exchanges as well as in the over the counter market.

CASH FLOW HEDGES At December 31, 2002, the Company had option and swap contracts in place to fix floor and ceiling prices on a portion of expected future sales of equity gas and oil production. The Company has option contracts to hedge its exposure to the variability in future cash flows associated with sales of oil production that extend through December 2003 and associated with sales of gas production that extend through December 2005. Swap agreements to hedge the Company's exposure to the variability in future cash flows associated with sales of oil production extend through December 2004 and associated with sales of gas production that extend through December 2004. As of December 31, 2002 and 2001, the Company had a net unrealized loss of $128 million before taxes, or $81 million after taxes, and a net unrealized gain of $7 million before taxes (gains of $9 million and losses of $2 million), or $4 million after taxes, respectively, on derivative instruments entered into to hedge production recorded in accumulated other comprehensive income. Other income for 2002 and 2001 included $33 million of net losses and $18 million of net gains, respectively, related to derivative instruments. These gains and losses were primarily due to recognition of unrealized gains and losses related to those hedges that did not qualify for hedge accounting and hedge ineffectiveness. Approximately $61 million after taxes of net losses in the accumulated other comprehensive income balance as of December 31, 2002 are expected to be reclassified into gas and oil sales during 2003 as the hedged transactions occur.

74

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS (CONTINUED)

As of December 31, 2002 and 2001, the Company had the following volumes under derivative contracts related to its oil and gas producing activities (non-trading activity). The difference between the fair values in the table and the unrealized gain (loss) before income taxes recognized in accumulated other comprehensive income is due to premiums, recognition of unrealized gains and losses on certain derivatives that did not qualify for hedge accounting, hedge ineffectiveness and foreign currency hedges.

DECEMBER 31, 2002

                                                                      NET FAIR VALUE
PRODUCTION                                                           ASSET (LIABILITY)
  PERIOD     INSTRUMENT TYPE*      VOLUMES         AVERAGE PRICE         MILLIONS
-----------  ----------------  ---------------   -----------------   -----------------
NATURAL GAS                    (million MMBtu)     ($ per MMBtu)
2003         Swaps**                   69                     3.89         $ (46)
2003         3-way collars**          107           2.61-3.69-4.72           (29)
2004         Swaps**                   70                     3.88           (26)
2004         3-way collars**           58           2.48-3.47-4.91           (10)
2005         3-way collars**            3           2.20-3.00-5.05            --
2003         Swaps                      4                     3.88            (1)
2003         Calls sold                 7                     3.22            (3)
2003         Calls purchased           10                     3.38             4
2003         2-way collars              2                3.00-5.00            (1)
2003         3-way collars              5           2.34-3.30-4.58            (2)
2004         Swaps                      4                     3.88            (1)
2004         Calls sold                 1                     2.98            --
2004         Calls purchased            1                     2.98            --
2004         2-way collars              2                3.00-5.00            (1)
2004         3-way collars              3           2.20-3.00-4.60            (1)
2005         2-way collars              2                3.00-5.00            --
2005         3-way collars              3           2.20-3.00-4.60            (1)
                                                                           -----
             Total                                                         $(118)
                                                                           -----

CRUDE OIL                        (MMBbls)           ($ per barrel)
2003         Swaps**                    5                    25.31         $  (9)
2003         2-way collars**           --              22.30-23.32            (2)
2003         3-way collars**           16        18.91-24.31-27.62           (19)
2004         Swaps**                    3                    23.09            (1)
2003         3-way collars              3        17.00-21.00-26.13            (5)
2003         Calls sold                13                    27.47           (23)
2003         Calls purchased           13                    27.47            23
                                                                           -----
             Total                                                         $ (36)
                                                                           -----

75

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS (CONTINUED)

DECEMBER 31, 2001

                                                                      NET FAIR VALUE
PRODUCTION                                                           ASSET (LIABILITY)
  PERIOD     INSTRUMENT TYPE*      VOLUMES         AVERAGE PRICE         MILLIONS
-----------  ----------------  ---------------   -----------------   -----------------
NATURAL GAS                    (million MMBtu)       ($ per MMBtu)
2002         2-way collars**            2                3.00-5.00         $   1
2002         3-way collars**            7           2.20-3.00-4.83             2
2003         2-way collars**            2                3.00-5.00             1
2003         3-way collars**            7           2.20-3.00-4.83             1
2004         2-way collars**            2                3.00-5.00             1
2004         3-way collars**            7           2.20-3.00-4.83             1
2005         2-way collars**            2                3.00-5.00             1
2005         3-way collars**            7           2.20-3.00-4.83             1
2002         Calls sold                10                     3.66             2
2002         Calls purchased            5                     3.50            --
2003         Calls sold                 7                     3.18            (2)
2003         Calls purchased           10                     4.12             2
2004         Calls sold                 1                     2.95            --
2004         Calls purchased            1                     2.95            --
                                                                           -----
             Total                                                         $  11
                                                                           -----

CRUDE OIL                        (MMBbls)           ($ per barrel)
2002         Swaps**                    1                    25.56         $   2
2002         3-way collars**            3        19.11-23.33-30.51             6
                                                                           -----
             Total                                                         $   8
                                                                           -----


MMBtu -- million British thermal units
MMBbls -- million barrels

* A 2-way collar is a combination of options, a sold call and a purchased put. The purchased put establishes a minimum price (floor) and the sold call establishes a maximum price (ceiling) the Company will receive for the volumes under contract. A 3-way collar is a combination of options, a sold call, a purchased put and a sold put. The purchased put establishes a minimum price unless the market price falls below the sold put, at which point the minimum price would be NYMEX plus the difference between the purchased put and the sold put strike price. The sold call establishes a maximum price the Company will receive for the volumes under contract.

** Qualifies for hedge accounting.

76

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS (CONTINUED)

FAIR VALUE HEDGE The Company had a swap agreement in place to convert a gas contract from a fixed price to a market sensitive price. The term of this swap agreement, as well as the underlying gas contract, expired October 31, 2001.

TRADING ACTIVITIES As of December 31, 2002 and 2001, the Company had the following volumes under derivative contracts related to its trading activity:

DECEMBER 31, 2002

                                                                   NET FAIR VALUE
PRODUCTION                                                        ASSET (LIABILITY)
  PERIOD      INSTRUMENT TYPE       VOLUMES       AVERAGE PRICE       MILLIONS
-----------  -----------------  ---------------   -------------   -----------------
NATURAL GAS                     (million MMBtu)   ($ per MMBtu)
2003         Futures sold             33               4.29             $ 18
2003         Futures purchased        28               4.15              (21)
2003         Swaps                    80               4.25               26
2003         Calls sold               11               4.83               (1)
2003         Calls purchased          10               4.79                1
2003         Puts sold                 3               3.77               --
2003         Puts purchased            4               3.66               --
2004         Futures sold              1               4.50               --
2004         Futures purchased         1               3.97               (1)
2004         Swaps                     8               4.01                1
2005         Swaps                     1               3.97               --
2006         Swaps                     1               3.87               --
                                                                        ----
             Total                                                      $ 23
                                                                        ----

CRUDE OIL                          (MMBbls)       ($ per barrel)
2003         Futures sold              1              27.49              $ --
2003         Futures purchased         1              26.91                 1
                                                                         ----
             Total                                                       $  1
                                                                         ----

77

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS (CONTINUED)

DECEMBER 31, 2001

                                                                   NET FAIR VALUE
PRODUCTION                                                        ASSET (LIABILITY)
  PERIOD      INSTRUMENT TYPE       VOLUMES       AVERAGE PRICE       MILLIONS
----------    ---------------   ---------------   -------------   -----------------
NATURAL GAS                     (million MMBtu)   ($ per MMBtu)
2002         Futures sold             24               3.34             $ 18
2002         Futures purchased        22               3.50              (21)
2002         Swaps                    72               3.20              (42)
2002         Calls sold                8               3.07                1
2002         Calls purchased          13               4.09                1
2002         Puts sold                 8               3.25               (7)
2002         Puts purchased            1               2.58               --
2003         Futures sold              1               3.51               --
2003         Futures purchased         1               3.36               --
2003         Swaps                    12               3.12               --
                                                                        ----
             Total                                                      $(50)
                                                                        ----

CRUDE OIL                          (MMBbls)       ($ per barrel)
----------                      ---------------   -------------
2002         Futures sold              3              19.80              $ (1)
2002         Futures purchased         1              20.05                 2
2002         Swaps                     1              21.77                --
2002         Calls sold                1              29.50                --
                                                                         ----
             Total                                                       $  1
                                                                         ----

FIRM TRANSPORTATION KEEP-WHOLE AGREEMENT Anadarko Holding was a party to several long-term firm gas transportation agreements that supported its gas marketing program within its gathering, processing and marketing (GPM) business segment, which was sold in 1999 to Duke. Most of the GPM's firm long-term transportation contracts were transferred to Duke in the GPM disposition. One contract was retained, but is managed and operated by Duke. Anadarko is not responsible for the operations of the contracts and does not utilize the associated transportation assets to transport the Company's natural gas. As part of the GPM disposition, Anadarko Holding agreed to pay Duke if transportation market values fall below the fixed contract transportation rates, while Duke will pay Anadarko Holding if the transportation market values exceed the contract transportation rates (keep-whole agreement). This keep-whole agreement will be in effect until the earlier of each contract's expiration date or February 2009. The Company may periodically use derivative instruments to reduce its exposure under the Duke keep-whole agreement to potential decreases in future transportation market values. While derivatives are intended to reduce the Company's exposure to declines in transportation market rates, they also limit the potential to benefit from market price increases. Due to decreased liquidity, the use of derivative instruments to manage this risk is generally limited to the forward twelve months. Net receipts from Duke for 2002 and 2001 were $17 million and $161 million, respectively. This keep-whole agreement and any associated derivative instruments are accounted for on a mark-to-market basis. The fair value of the short-term portion of the firm transportation keep-whole agreement is calculated with quoted natural gas basis prices. Basis is the difference in value between gas at various delivery points and the NYMEX gas futures contract price. Management believes that natural gas basis price quotes beyond the next twelve months are not reliable indicators of fair value due to decreasing liquidity. Accordingly, the fair value of the long-term portion is estimated based on historical natural gas basis prices, discounted at 10% per year. Management also periodically evaluates the supply and demand factors (such as expected drilling activity, anticipated pipeline construction projects, expected changes in demand at pipeline delivery points, etc.) that may impact the future market value of

78

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

8. FINANCIAL INSTRUMENTS (CONTINUED)

the firm transportation capacity to determine if the estimated fair value should be adjusted. The Company recognized other income of $35 million, $91 million and $175 million during 2002, 2001 and 2000, respectively, related to this agreement and associated derivative instruments. As of December 31, 2002 accounts payable included $5 million and other long-term liabilities included $68 million, related to the keep-whole agreement. As of December 31, 2001, other current assets included $25 million, accounts payable included $27 million and other long-term liabilities included $80 million related to the keep-whole agreement and associated derivative instruments.
Anticipated discounted and undiscounted liabilities for the firm transportation keep-whole agreement at December 31, 2002 are as follows:

                                                              UNDISCOUNTED   DISCOUNTED
                          millions                            ------------   ----------
2003                                                              $ 5           $ 5
2004                                                               28            24
2005                                                               20            16
2006                                                               19            13
2007                                                               14             9
Later years                                                         9             6
                                                                  ---           ---
Total                                                             $95           $73
                                                                  ---           ---

As of December 31, 2002, the Company had no natural gas volumes under derivative contracts related to the firm transportation keep-whole agreement. As of December 31, 2001, the Company had the following volumes of natural gas under derivative contracts related to the firm transportation keep-whole agreement:

                                                                  NET FAIR VALUE
PRODUCTION                        VOLUMES        AVERAGE PRICE   ASSET (LIABILITY)
  PERIOD     INSTRUMENT TYPE  (MILLION MMBTU)    ($ PER MMBTU)       MILLIONS
----------   ---------------  ---------------    -------------   -----------------
2002         Swaps                    4*             8.42               $25


* Represents 2% of the Company's total volumetric exposure under the keep-whole agreement for 2002.

FOREIGN CURRENCY RISK Anadarko's Canadian subsidiaries use the Canadian dollar as their functional currency. The Company's other international subsidiaries use the U.S. dollar as their functional currency. To the extent that business transactions in these countries are not denominated in the respective country's functional currency, the Company is exposed to foreign currency exchange rate risk. In addition, in these subsidiaries, certain asset and liability balances are denominated in currencies other than the subsidiary's functional currency. These asset and liability balances are remeasured for the preparation of the subsidiary's financial statements using a combination of current and historical exchange rates, with any resulting remeasurement adjustments included in net income during the period.
At December 31, 2002 and 2001, the Company's Latin American subsidiaries had foreign deferred tax liabilities denominated in the local currency equivalent totaling $49 million and $78 million, respectively. During 2002, 2001 and 2000, the Company recognized tax benefits associated with remeasurement of these deferred tax liabilities of $35 million, $6 million and $1 million, respectively. In conjunction with the sale of certain properties in 2001, the Company indemnified a purchaser for the use of local tax losses denominated in local currency equivalent totaling $22 million. A loss of $1 million and a gain of $1 million, before taxes, were recognized related to the remeasurement of this liability and are included in other (income) expense during 2002 and 2001, respectively.

79

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

9. PREFERRED STOCK

In May 1998, Anadarko issued $200 million of 5.46% Series B Cumulative Preferred Stock in the form of two million Depositary Shares, each Depositary Share representing 1/10th of a share of the 5.46% Series B Cumulative Preferred Stock. The preferred stock has no stated maturity and is not subject to a sinking fund or mandatory redemption. The shares are not convertible into other securities of the Company.
Anadarko has the option to redeem the shares at $100 per Depositary Share on or after May 15, 2008. Holders of the shares are entitled to receive, when, and as declared by the Board of Directors, cumulative cash dividends at an annual dividend rate of $5.46 per Depositary Share. In the event of a liquidation of the Company, the holders of the shares will be entitled to receive liquidating distributions in the amount of $100 per Depositary Share plus any accrued or unpaid dividends, before any distributions are made on the Company's common stock.
Anadarko repurchased $2 million and $97 million of preferred stock during 2002 and 2001, respectively. No gain or loss was recorded in 2002 related to the preferred stock repurchase activity. A gain of $13 million was recorded to paid-in capital during 2001. During 2002, 2001 and 2000, dividends of $54.60 per share (equivalent to $5.46 per Depositary Share) were paid to holders of preferred stock.

10. COMMON STOCK AND STOCK OPTIONS

Following is a schedule of the changes in the Company's shares of common stock:

                                                              2002   2001   2000
millions                                                      ----   ----   ----
SHARES OF COMMON STOCK ISSUED
Beginning of year                                             254    253    130
Issuance of common stock                                       --     --    114
Exercise of stock options                                       1      1      6
Issuance of restricted stock                                   --     --      2
Issuance of shares for unearned employee stock ownership
  plan                                                         --     --      1
                                                              ---    ---    ---
End of year                                                   255    254    253
                                                              ---    ---    ---
SHARES OF COMMON STOCK HELD IN TREASURY
Beginning of year                                               2     --     --
Purchase of treasury stock                                      1      2     --
                                                              ---    ---    ---
End of year                                                     3      2     --
                                                              ---    ---    ---
SHARES OF COMMON STOCK HELD FOR UNEARNED EMPLOYEE STOCK
  OWNERSHIP PLAN
Beginning of year                                               1      1     --
Issuance of stock                                              --     --      1
                                                              ---    ---    ---
End of year                                                     1      1      1
                                                              ---    ---    ---
SHARES OF COMMON STOCK HELD FOR EXECUTIVES AND DIRECTORS
  BENEFITS TRUST
Beginning of year                                               2      2      2
                                                              ---    ---    ---
End of year                                                     2      2      2
                                                              ---    ---    ---
SHARES OF COMMON STOCK OUTSTANDING AT END OF YEAR             249    249    250
                                                              ---    ---    ---

In the fourth quarter of 2002, dividends of 10 cents per share were paid to holders of common stock. For the first, second and third quarters of 2002 and the fourth quarter of 2001, dividends of 7.5 cents per share were paid to holders of common stock. For the first, second and third quarters of 2001 and for each quarter of 2000, dividends of 5 cents per share were paid to holders of common stock. The Company's credit agreements allow for a maximum capitalization ratio of 60% debt, exclusive of the effect of any non-cash writedowns. While there is

80

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

10. COMMON STOCK AND STOCK OPTIONS (CONTINUED)

no specific restriction on paying dividends, under the maximum debt capitalization ratio retained earnings were not restricted as to the payment of dividends at December 31, 2002 and 2001.
In July 2000, the stockholders of Anadarko approved an increase in the authorized number of Anadarko common shares from 300 million to 450 million. In July 2000, each share of common stock of Anadarko Holding issued and outstanding was converted into 0.455 shares of Anadarko common stock with approximately 114 million shares issued to the stockholders of Anadarko Holding.
The Anadarko Dividend Reinvestment and Stock Purchase Plan (DRIP) offers the opportunity to reinvest dividends and provides an alternative to traditional methods of buying, holding and selling Anadarko common stock. The DRIP provides the Company with a means of raising additional capital for general corporate purposes. The Company has a registration statement with the SEC that permits the issuance of up to 4.5 million additional shares of common stock under the DRIP.
Under the Anadarko Stockholders Rights Plan, Rights were attached automatically to each outstanding share of common stock in November 1998. Each Right, at the time it becomes exercisable and transferable apart from the common stock, entitles stockholders to purchase from the Company 1/1000th of a share of a new series of junior participating preferred stock at an exercise price of $175. The Right will be exercisable only if a person or group acquires 15% or more of common stock or announces a tender offer or exchange offer, the consummation of which would result in ownership by a person or group of 15% or more of the common stock. The Board of Directors may elect to exchange and redeem the Rights. The Rights expire in November 2008.
In 2001, the Board of Directors authorized the Company to purchase up to $1 billion in shares of Anadarko common stock. The share purchases may be made from time to time, depending on market conditions. Shares may be purchased either in the open market or through privately negotiated transactions. The repurchase program does not obligate Anadarko to acquire any specific number of shares and may be discontinued at any time. During 2001, the Company purchased 2.2 million shares of common stock for $116 million. In 2002, the Company purchased 1 million shares of common stock for $50 million. During 2000, the Company acquired treasury stock only as a result of stock option exercises, restricted stock transactions or buyback of shares, which were unsolicited from stockholders.
During 2002 and 2001 in conjunction with the stock purchase program, Anadarko sold put options to independent third parties. These put options entitled the holder to sell shares of Anadarko common stock to the Company on certain dates at specified prices. During 2001, Anadarko sold put options for the purchase of a total of 5 million shares of Anadarko common stock with a notional amount of $240 million. A put option for 1 million shares was exercised and put options for 2 million shares expired unexercised in 2001. Put options for the remaining 2 million shares expired unexercised in 2002. During 2001, premiums of $15 million were received related to these put options. In 2002, the Company entered into a put option for 1 million shares of Anadarko common stock with a notional amount of $46 million. The Company received premiums of $7 million during 2002. This put option expired unexercised in 2002. The premiums for put options were recorded as increases to paid-in capital. The put options permitted a net-share settlement at the Company's option and did not result in a liability on the consolidated balance sheet.
As of December 31, 2002 and 2001, the Company had 2 million shares of common stock in the Anadarko Petroleum Corporation Executives and Directors Benefits Trust (Trust) to secure present and future unfunded benefit obligations of the Company. These benefit obligations are provided for under pension plans and deferred compensation plans for certain employees and non-employee directors of the Company. The obligations included in Other Long-term Liabilities - Other are $46 million and $33 million as of December 31, 2002 and 2001, respectively. The shares issued to the Trust are not considered outstanding for quorum or voting calculations, but the Trust receives dividends. Under the treasury stock method, the shares are not included in the calculation of EPS. The fair market value of these shares is included in common stock and paid-in capital and as a reduction to stockholders' equity. See Note 18.

81

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

10. COMMON STOCK AND STOCK OPTIONS (CONTINUED)

Key employees may be granted options to purchase shares of Anadarko common stock and other stock related awards under the 1993 and the 1999 Stock Incentive Plans. Stock options are granted at the fair market value of Anadarko stock on the date of grant and have a maximum term of 11 years from the date of grant.
In addition, the Plans provide that shares of common stock may be granted as restricted stock. Generally, restricted stock is subject to forfeiture restrictions and cannot be sold, transferred or disposed of during the restriction period. The holders of the restricted stock have all the rights of a stockholder of the Company with respect to such shares, including the right to vote and receive dividends or other distributions paid with respect to such shares. During 2002, 2001 and 2000, the Company issued 0.2 million, 0.2 million and 1.2 million shares, respectively, of restricted stock with a weighted-average grant date fair value of $48.88, $61.26 and $50.21 per share, respectively. In 2002, 2001 and 2000, expense related to restricted stock grants was $15 million, $14 million and $8 million, respectively. In 2001 and 2000, 0.03 million and 0.5 million shares, respectively, of unrestricted common stock with a weighted-average grant date fair value of $65.71 and $48.53 per share, respectively, were issued related to the Anadarko Holding merger transaction. In 2001 and 2000, administrative and general expense of $2 million and $25 million, respectively, was recorded related to these shares. Also due to the Anadarko Holding merger transaction, 0.2 million shares of unrestricted common stock with a weighted-average grant date fair value of $48.53 per share were issued in 2000. A purchase price adjustment of $10 million was recorded related to these shares. See Note 4.
Non-employee directors may be granted non-qualified stock options or deferred stock under the 1998 Director Stock Plan. Stock options are granted at the fair market value of Anadarko stock on the date of grant and have a maximum term of ten years from the date of grant.
Unexercised stock options are included in the diluted EPS using the treasury stock method. Information regarding the Company's stock option plans is summarized below:

                                              2002                 2001                 2000
                                       ------------------   ------------------   ------------------
                                                WEIGHTED-            Weighted-            Weighted-
                                                 AVERAGE              Average              Average
                                                EXERCISE             Exercise             Exercise
                                       SHARES     PRICE     SHARES     PRICE     SHARES     PRICE
      option shares in millions        ------   ---------   ------   ---------   ------   ---------
SHARES UNDER OPTION AT BEGINNING OF
  YEAR                                  14.6     $42.49      14.4     $41.28       8.9     $29.94
Granted                                  1.4     $41.43       1.0     $58.12       7.4     $48.80
Anadarko Holding options assumed at
  merger date                             --     $   --        --     $   --       4.4     $38.93
Exercised                               (0.6)    $32.53      (0.6)    $32.93      (6.3)    $32.32
Surrendered or expired                  (0.1)    $53.35      (0.2)    $59.72        --     $40.26
                                        ----                 ----                 ----
SHARES UNDER OPTION AT END OF YEAR      15.3     $42.68      14.6     $42.49      14.4     $41.28
                                        ----                 ----                 ----
Options exercisable at December 31      11.1     $40.93       7.9     $36.26       6.0     $33.91
                                        ----                 ----                 ----
Shares available for future grant at
  end of year                            2.5                  3.6                  4.8
                                        ----                 ----                 ----
Weighted-average fair value of
  options granted during the year                $18.86               $22.71               $19.09

82

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

10. COMMON STOCK AND STOCK OPTIONS (CONTINUED)

The following table summarizes information about the Company's stock options outstanding at December 31, 2002:

                        OPTIONS OUTSTANDING               OPTIONS EXERCISABLE
               --------------------------------------   -----------------------
                              WEIGHTED-
                 OPTIONS       AVERAGE      WEIGHTED-     OPTIONS     WEIGHTED-
  RANGE OF     OUTSTANDING    REMAINING      AVERAGE    EXERCISABLE    AVERAGE
  EXERCISE       AT YEAR     CONTRACTUAL    EXERCISE      AT YEAR     EXERCISE
   PRICES          END       LIFE (YEARS)     PRICE         END         PRICE
  --------     -----------   ------------   ---------   -----------   ---------
   options in millions
$ 0.00-$33.56      3.4           3.7         $27.34         3.3        $28.51
$33.60-$48.44      3.7           5.6         $40.23         2.3        $37.09
$48.53-$48.53      6.9           4.4         $48.53         4.8        $48.53
$48.94-$71.49      1.3           5.0         $58.60         0.7        $59.21
                  ----           ---         ------        ----        ------
Total             15.3           4.6         $42.68        11.1        $40.93
                  ----           ---         ------        ----        ------

The reconciliation between basic and diluted EPS is as follows:

                                              FOR THE YEAR ENDED            For the Year Ended            For the Year Ended
                                               DECEMBER 31, 2002             December 31, 2001             December 31, 2000
                                          ---------------------------   ---------------------------   ---------------------------
                                                            PER SHARE                     Per Share                     Per Share
                                          INCOME   SHARES    AMOUNT      LOSS    SHARES    AMOUNT     INCOME   SHARES    AMOUNT
   millions except per share amounts      ------   ------   ---------   ------   ------   ---------   ------   ------   ---------
BASIC EPS
Net income (loss) available to common
  stockholders before change in
  accounting principle                    $ 825     248      $ 3.32     $(183)    250      $(0.73)    $ 813     184      $ 4.42
                                                             ------                        ------                        ------
Effect of convertible debentures and
  ZYP-CODES                                   9      10                    --      --                     6       7
Effect of dilutive stock options,
  performance-based stock awards and
  common stock put options                   --       2                    --      --                    --       2
                                          -----     ---                 -----     ---                 -----     ---
DILUTED EPS
Net income (loss) available to common
  stockholders plus assumed conversion    $ 834     260      $ 3.21     $(183)    250      $(0.73)    $ 819     193      $ 4.25
                                          -----     ---      ------     -----     ---      ------     -----     ---      ------

For the years ended December 31, 2002, 2001 and 2000, options for 5.1 million, 1.2 million and 0.1 million average shares of common stock, respectively, were excluded from the diluted EPS calculation because the options' exercise price was greater than the average market price of common stock for the respective period. For the years ended December 31, 2002 and 2001, put options for 0.5 million and 1.8 million average shares, respectively, of common stock were excluded because the put options' exercise price was less than the average market price of common stock for the period. For the year ended December 31, 2001, there were 15.9 million potential common shares related to outstanding stock options, convertible debentures and ZYP-CODES that were excluded from the computation of diluted EPS because they had an anti-dilutive effect.

11. STATEMENT OF CASH FLOWS SUPPLEMENTAL INFORMATION

The amounts of cash paid for interest (net of amounts capitalized) and income taxes are as follows:

                                                              2002     2001     2000
millions                                                      ----     ----     ----
Interest                                                      $175     $ 96     $90
Income taxes paid                                             $ 67     $169     $40

83

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

11. STATEMENT OF CASH FLOWS SUPPLEMENTAL INFORMATION (CONTINUED)

The Anadarko Holding merger transaction was completed through the issuance of common stock, which was a non-cash transaction that was not reflected in the statement of cash flows. See Note 4. The $53 million of acquisition costs for 2000 reflected in Cash Flow from Investing Activities in the Consolidated Statement of Cash Flows represents capitalized merger costs in connection with the Anadarko Holding merger transaction of $147 million, less the cash acquired on the date of the Anadarko Holding merger transaction of $94 million.

12. TRANSACTIONS WITH RELATED PARTIES AND MAJOR CUSTOMERS

Anadarko has three Production Sharing Agreements (PSA) with Sonatrach, the national oil and gas enterprise of Algeria. Sonatrach has owned the Company's common stock since 1986 and at year-end 2002 was the registered owner of 4.9% of Anadarko's outstanding common stock. Each PSA gives Anadarko the right to explore, develop and produce liquid hydrocarbons in Algeria, subject to the sharing of production with Sonatrach.
Anadarko has two partners in the Block 404/208 PSA. Approximately $23 million, $10 million and $10 million was paid to Sonatrach in 2002, 2001 and 2000, respectively, for charges related to transportation of oil, oil purchases, well testing services, reservoir studies, laboratory services and equipment usage. During 2002, 2001 and 2000, zero, $7 million and $6 million, respectively, was received and $4 million and $7 million was included in accounts payable as of December 31, 2002 and 2001, respectively, from Sonatrach for joint interest billings of development costs in Algeria under the PSAs. During 2000, Anadarko and Sonatrach formed a non-profit company, Groupement Berkine, to carry out the majority of their joint operating activities under the PSA. Sonatrach and Anadarko fund the expenditures incurred by Groupement Berkine according to their participating interests under the PSA.
In 2001, Anadarko and its partners signed an amendment to the Block 404/208 PSA with Sonatrach, which allows exploration to resume on Blocks 404, 208 and 211 in areas outside of the exploitation license boundaries encompassing the previous discoveries. Under the terms of the new three-phase exploration program, Anadarko and its joint venture partners will spend a minimum of $55 million and began drilling exploration wells in 2002.
Anadarko signed two additional PSAs in 2001 and 2002 for Blocks 406b and 403c/e, respectively. The Company's interest in Block 406b is 100% and in Block 403c/e is 67%. Each agreement is for an initial three year exploration phase with work commitments including seismic acquisition and one exploration well.
Anadarko and partners have two Engineering, Procurement and Construction (EPC) contracts to build oil production facilities in Algeria with Brown & Root-Condor, a company jointly owned by Brown & Root and affiliates of Sonatrach. For the year ended December 31, 2000, approximately $4 million was paid to Brown & Root-Condor under the EPC contracts.
Political unrest continues in Algeria. Anadarko continually monitors the situation and has taken reasonable and prudent steps to ensure the safety of employees and the security of its facilities in the remote regions of the Sahara Desert. Anadarko is unable to predict with certainty any effect the current situation may have on activity planned for 2003 and beyond. However, the situation has had no material effect to date on the Company's operations in Algeria, where the Company has had activities since 1989. The Company's activities in Algeria also are subject to the general risks associated with all foreign operations.
Anadarko recognized revenues of $12 million in 2001 for cumulative preferred dividends declared by OCI Wyoming Co., an equity affiliate. Anadarko owns a 20% common stock interest in OCI Wyoming Co. along with 100% of the cumulative preferred stock. The amount recorded to income in 2001 was for dividends in arrears for the period 1999 through 2001.
The Company's natural gas is sold to interstate and intrastate gas pipelines, direct end-users, industrial users, local distribution companies and gas marketers. Crude oil and condensate are sold to marketers, gatherers and refiners. NGLs are sold to direct end-users, refiners and marketers. These purchasers are located in the United States, Canada, England, Germany, Italy, Mexico, Switzerland and Turkey. The majority of the Company's receivables are paid within two months following the month of purchase.

84

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

12. TRANSACTIONS WITH RELATED PARTIES AND MAJOR CUSTOMERS (CONTINUED)

The Company generally performs a credit analysis of customers prior to making any sales to new customers or increasing credit for existing customers. Based upon this credit analysis, the Company may require a standby letter of credit or a financial guarantee. As of December 31, 2002 and 2001, accounts receivable are shown net of allowance for doubtful accounts of $16 million and $44 million, respectively.
In 2002, 2001 and 2000, sales to Duke Energy and affiliates were $843 million, $1.4 billion and $1.0 billion, respectively, which accounted for 22%, 31% and 35% of the Company's total 2002, 2001 and 2000 revenues, respectively.

13. SEGMENT AND GEOGRAPHIC INFORMATION

Anadarko's primary business segments are vertically integrated business units that are principally within the oil and gas industry. These segments are managed separately because of their unique technology, marketing and distribution requirements. The Company's three segments are upstream oil and gas activities, marketing and trading activities and minerals activities. The oil and gas exploration and production segment finds and produces natural gas, crude oil, condensate and NGLs. The marketing and trading segment is responsible for gathering, transporting and selling most of Anadarko's natural gas production as well as volumes of gas, oil and NGLs purchased from third parties. The minerals segment finds and produces minerals in several coal, trona (natural soda ash) and industrial mineral mines. The segment shown as Intercompany Eliminations and All Other includes other smaller operating units, corporate activities, financing activities and intercompany eliminations.
The Company's accounting policies for segments are the same as those described in the summary of accounting policies. Management evaluates segment performance based on profit or loss from operations before income taxes and various other factors. Transfers between segments are accounted for at market value.
The following table illustrates information related to Anadarko's business segments:

                                                                          INTERCOMPANY
                                   OIL AND GAS     MARKETING              ELIMINATIONS
                                   EXPLORATION        AND                    AND ALL
                                  AND PRODUCTION    TRADING    MINERALS       OTHER        TOTAL
millions                          --------------   ---------   --------   -------------   -------
2002
Revenues                             $ 2,443        $  126      $   41       $ 1,250      $ 3,860
Intersegment revenues                  1,236             9          --        (1,245)          --
                                     -------        ------      ------       -------      -------
  Total revenues                       3,679           135          41             5        3,860
Depreciation, depletion and
  amortization                         1,056            19           3            43        1,121
Impairments related to oil and
  gas properties                          39            --          --            --           39
Other costs and expenses                 907           116           2           250        1,275
                                     -------        ------      ------       -------      -------
  Total costs and expenses             2,002           135           5           293        2,435
Other (income) expense                    --           (35)         --           253          218
                                     -------        ------      ------       -------      -------
Income (loss) before income
  taxes                              $ 1,677        $   35      $   36       $  (541)     $ 1,207
                                     -------        ------      ------       -------      -------
Net properties and equipment         $13,204        $  237      $1,202       $   455      $15,098
                                     -------        ------      ------       -------      -------
Capital expenditures                 $ 2,310        $   13      $   --       $    65      $ 2,388
                                     -------        ------      ------       -------      -------
Goodwill                             $ 1,434        $   --      $   --       $    --      $ 1,434
                                     -------        ------      ------       -------      -------

85

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

13. SEGMENT AND GEOGRAPHIC INFORMATION (CONTINUED)

                                                                          INTERCOMPANY
                                   OIL AND GAS     MARKETING              ELIMINATIONS
                                   EXPLORATION        AND                    AND ALL
                                  AND PRODUCTION    TRADING    MINERALS       OTHER        TOTAL
millions                          --------------   ---------   --------   -------------   -------

2001
Revenues                             $ 3,172        $  125      $   57       $ 1,364      $ 4,718
Intersegment revenues                  1,371            17          --        (1,388)          --
                                     -------        ------      ------       -------      -------
  Total revenues                       4,543           142          57           (24)       4,718
Depreciation, depletion and
  amortization                         1,110            12           4            28        1,154
Impairments related to oil and
  gas properties                       2,546            --          --            --        2,546
Other costs and expenses                 950           115           4           312        1,381
                                     -------        ------      ------       -------      -------
  Total costs and expenses             4,606           127           8           340        5,081
Other (income) expense                    --           (91)         --           118           27
                                     -------        ------      ------       -------      -------
Income (loss) before income
  taxes                              $   (63)       $  106      $   49       $  (482)     $  (390)
                                     -------        ------      ------       -------      -------
Net properties and equipment         $11,765        $  253      $1,206       $   413      $13,637
                                     -------        ------      ------       -------      -------
Capital expenditures                 $ 3,072        $   66      $   --       $   178      $ 3,316
                                     -------        ------      ------       -------      -------
Goodwill                             $ 1,430        $   --      $   --       $    --      $ 1,430
                                     -------        ------      ------       -------      -------
2000
Revenues                             $ 1,938        $   48      $   52       $   873      $ 2,911
Intersegment revenues                    866            66          --          (932)          --
                                     -------        ------      ------       -------      -------
  Total revenues                       2,804           114          52           (59)       2,911
Depreciation, depletion and
  amortization                           570             8           2            13          593
Impairments related to oil and
  gas properties                          50            --          --            --           50
Other costs and expenses                 575           170           2           169          916
                                     -------        ------      ------       -------      -------
  Total costs and expenses             1,195           178           4           182        1,559
Other (income) expense                    --          (174)         --           100          (74)
                                     -------        ------      ------       -------      -------
Income (loss) before income
  taxes                              $ 1,609        $  110      $   48       $  (341)     $ 1,426
                                     -------        ------      ------       -------      -------
Net properties and equipment         $11,330        $  166      $1,211       $   304      $13,011
                                     -------        ------      ------       -------      -------
Capital expenditures                 $ 1,630        $   41      $   --       $    37      $ 1,708
                                     -------        ------      ------       -------      -------
Goodwill                             $ 1,317        $   --      $   --       $    --      $ 1,317
                                     -------        ------      ------       -------      -------

86

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

13. SEGMENT AND GEOGRAPHIC INFORMATION (CONTINUED)

The following table shows Anadarko's revenues (based on the origin of the sales) and net properties and equipment by geographic area:

                                                               2002     2001     2000
millions                                                      ------   ------   ------
REVENUES
United States                                                 $2,476   $3,537   $2,175
Canada                                                           653      794      332
Algeria                                                          572      195      271
Other International                                              159      192      133
                                                              ------   ------   ------
Total                                                         $3,860   $4,718   $2,911
                                                              ------   ------   ------

                                                               2002      2001
millions                                                      -------   -------
NET PROPERTIES AND EQUIPMENT
United States                                                 $11,258   $10,072
Canada                                                          2,096     2,010
Algeria                                                           898       807
Other International                                               846       748
                                                              -------   -------
Total                                                         $15,098   $13,637
                                                              -------   -------

14. OTHER TAXES

Significant taxes other than income taxes are as follows:

                                                              2002   2001   2000
millions                                                      ----   ----   ----
Production and severance                                      $ 99   $139   $ 88
Ad valorem                                                      91     85     28
Payroll and other                                               24     23     12
                                                              ----   ----   ----
Total                                                         $214   $247   $128
                                                              ----   ----   ----

15. OTHER (INCOME) EXPENSE

Other (income) expense consists of the following:

                                                              2002    2001    2000
millions                                                      -----   -----   -----
Firm transportation keep-whole contract valuation (See Note
  8)                                                          $(35)   $ (91)  $(175)
Unrealized (gain) loss on derivative instruments                33      (18)     --
Gas sales contracts -- accretion of discount                    11       14      --
Foreign currency exchange*                                       1       29       7
Other                                                            5        1       1
                                                              ----    -----   -----
Total                                                         $ 15    $ (65)  $(167)
                                                              ----    -----   -----


* The years ended December 31, 2002, 2001 and 2000, exclude $35 million, $6 million and $1 million, respectively, in transaction gains related primarily to remeasurement of the Venezuelan deferred tax liability, which is included in income tax expense.

87

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

16. INCOME TAXES

Income tax expense (benefit), including deferred amounts, is summarized as follows:

                                                              2002   2001    2000
millions                                                      ----   -----   ----
CURRENT
Federal                                                       $ (8)  $  32   $  8
State                                                            9       5      3
Foreign                                                        178      50     67
                                                              ----   -----   ----
Total                                                          179      87     78
                                                              ----   -----   ----
DEFERRED
Federal                                                        194     (38)   405
State                                                           10      (5)    24
Foreign                                                         (7)   (258)    95
                                                              ----   -----   ----
Total                                                          197    (301)   524
                                                              ----   -----   ----
Total                                                         $376   $(214)  $602
                                                              ----   -----   ----

Total income taxes were different than the amounts computed by applying the statutory income tax rate to income (loss) before income taxes. The sources of these differences are as follows:

                                                               2002    2001     2000
millions                                                      ------   -----   ------
Income (Loss) Before Income Taxes
  Domestic                                                    $  706   $  67   $1,085
  Foreign                                                        501    (457)     341
                                                              ------   -----   ------
Total                                                         $1,207   $(390)  $1,426
                                                              ------   -----   ------
Statutory tax rate                                                35%     35%      35%

Tax computed at statutory rate                                $  423   $(137)  $  499
Adjustments resulting from:
  State income taxes (net of federal income tax benefit)          12      --       17
  Oil and gas credits                                            (15)    (22)     (13)
  Taxes related to foreign operations (net of federal income
     tax benefit)                                                (42)    (51)     134
  Reversal of goodwill amortization                               --      22       11
  Effect of change in Canadian income tax rates                   (5)    (31)      --
  Other -- net                                                     3       5      (46)
                                                              ------   -----   ------
Total income tax expense (benefit)                            $  376   $(214)  $  602
                                                              ------   -----   ------
Effective tax rate                                                31%     55%      42%
                                                              ------   -----   ------

The tax benefit of compensation expense for tax purposes in excess of amounts recognized for financial accounting purposes has been credited directly to stockholders' equity. For 2002, 2001 and 2000, the tax benefit amounted to $8 million, $6 million and $67 million, respectively.
A net tax benefit of $42 million resulting from the Company's restructuring of certain foreign operations in 2000 was recorded to a deferred liability account. An additional net tax benefit of $49 million was recorded to the account during 2001. In addition, a net tax benefit previously recorded to the account in the amount of $152 million was reversed to goodwill in 2001 as a result of the sale of a wholly-owned subsidiary resulting in a net deferred asset balance. A net tax liability of $24 million resulting from the Company's restructuring of certain foreign operations in 2002 was recorded as an offset to the account. The resulting deferred asset is reflected in the Company's other long-term assets.

88

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

16. INCOME TAXES (CONTINUED)

In 2001, tax expense in the amount of $10 million was recorded directly to goodwill relating to the sale of a wholly-owned subsidiary, which was acquired in a corporate acquisition.
The tax effects of temporary differences that give rise to significant portions of the deferred tax liabilities (assets) at December 31, 2002 and 2001 are as follows:

                                                               2002     2001
millions                                                      ------   ------
Oil and gas exploration and development costs                 $2,938   $2,797
Mineral operations                                               419      422
Other                                                            795      506
                                                              ------   ------
Gross noncurrent deferred tax liabilities                      4,152    3,725
                                                              ------   ------
Net operating loss carryforward                                  (28)      --
Alternative minimum tax credit carryforward                     (146)    (136)
Other                                                           (378)    (169)
                                                              ------   ------
Gross noncurrent deferred tax assets                            (552)    (305)
Less: valuation allowance                                         33       31
                                                              ------   ------
Net noncurrent deferred tax assets                              (519)    (274)
Net noncurrent deferred tax liabilities                       $3,633   $3,451
                                                              ------   ------

The $2 million net increase in the valuation allowance during 2002 is primarily attributable to a change in judgment about the expected realization of an existing foreign deferred tax asset.
Tax carryforwards at December 31, 2002, which are available for future utilization on income tax returns, are as follows:

                                                              DOMESTIC   FOREIGN   EXPIRATION
millions                                                      --------   -------   ----------
Alternative minimum tax credit                                  $146      $ --     Unlimited
General business tax credit                                     $ 42      $ --     2006-2021
Net operating loss                                              $ --      $ 62     2003-2004
Capital loss - domestic                                         $ 23      $ --     2007
Capital loss - foreign                                          $ --      $ 23     Unlimited
Foreign tax credit                                              $  4      $ --     2005

89

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

17. COMMITMENTS

The Company has various commitments under non-cancelable operating lease agreements for buildings, facilities, aircraft and equipment, the majority of which expire at various dates through 2016. The Company also maintains a capital lease for certain furniture and office walls, which were sold but the liability was retained. The majority of the operating leases are expected to be renewed or replaced as they expire. At December 31, 2002, future minimum lease payments and receipts due under operating and capital leases are as follows:

                                                                                    OPERATING
                                                              CAPITAL   OPERATING   SUBLEASE
                                                              LEASES     LEASES      INCOME
millions                                                      -------   ---------   ---------
2003                                                            $ 3       $ 72        $(29)
2004                                                              6         67          (6)
2005                                                              1         55          (5)
2006                                                             --         52          (5)
2007                                                             --         53          (5)
Later years                                                      --        208         (21)
                                                                ---       ----        ----
Total future minimum lease payments                              10       $507        $(71)
                                                                          ----        ----
Less: amounts representing interest                              (1)
                                                                ---
Present value of minimum capital lease obligations                9
                                                                ---
Less: short-term portion of capital lease obligations            (2)
                                                                ---
Long-term portion of capital lease obligations                  $ 7
                                                                ---

Total rental expense, net of sublease income, amounted to $42 million, $43 million and $48 million in 2002, 2001 and 2000, respectively.

SYNTHETIC LEASES Anadarko has two lease arrangements for its corporate office buildings in The Woodlands, Texas. The development and acquisition of the properties were financed by special purpose entities (SPEs) sponsored by a financial institution. The total amount funded under these leases was $213 million. The SPEs are not consolidated in the Company's financial statements, and based on the terms of the agreements, the Company has accounted for these arrangements as operating leases in accordance with SFAS No. 13, "Accounting for Leases," and the table above includes the lease payment obligations.
The initial lease term for each lease is five years. Monthly lease payments are based on the London interbank borrowing rate applied against the lease balance. Future minimum lease payments are included in the above table. The leases contain various covenants including covenants regarding the Company's financial condition. Default under the leases, including violation of these covenants, could require the Company to purchase the facilities for a specified amount, which approximates the lessor's original cost ($213 million). As of December 31, 2002, the Company was in compliance with these covenants.
At the end of the lease term, the Company has an option to either purchase the facilities for the purchase option amount of the lease balance plus any outstanding lease payments or to assist the SPEs in the sale of the properties. The Company has provided a residual value guarantee for any deficiency if the properties are sold for less than the sale option amount ($178 million at December 31, 2002). In addition, the Company is entitled to any proceeds from a sale of the properties in excess of the purchase option amount.
If for either of these leases, the Company determines that it is probable that the expected fair value of the property at the end of the lease term will be less than the purchase option amount, the Company will accrue the expected loss on a straight line basis over the remaining lease term. Currently, Management does not believe it is probable that the fair market value of either of these properties will be less than the purchase option amount at the end of the lease term. As such, no liability has been recognized for these guarantees as of December 31, 2002.

90

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

17. COMMITMENTS (CONTINUED)

In addition, the table above includes the Company's lease payment obligations of $11 million related to aircraft operating leases financed by synthetic leases. One of these aircraft leases is a synthetic lease with a residual value guarantee for any deficiency if the aircraft is sold for less than the sale option amount (approximately $11 million). In addition, the Company is entitled to any proceeds from a sale of the aircraft in excess of the sale option amount. No liability has been recorded related to this guarantee.
As discussed in Note l, the Company is evaluating the impact of the 2003 adoption of FIN No. 45 and FIN No. 46 on accounting for and the possible restructuring of the synthetic leases and related guarantees.

PRODUCTION PLATFORM In April 2002, the Company signed an agreement under which a floating production platform for its Marco Polo discovery in Green Canyon Block 608 of the Gulf of Mexico will be installed. The other party to the agreement will construct and own the platform and production facilities that upon completion, expected in late 2003, will be operated by Anadarko. The agreement provides that Anadarko dedicate its production from Green Canyon Block 608 and 11 other Green Canyon blocks to the production facilities. The agreement requires a monthly demand charge of slightly over $2 million for five years beginning at the time of project completion and a processing fee based upon production throughput. Since the Company's obligation to make these lease payments begins at the time of project completion, the table of future minimum lease payments above does not include any amounts related to this agreement. The agreement does not contain any purchase options, purchase obligations or value guarantees.

18. PENSION PLANS, OTHER POSTRETIREMENT BENEFITS AND EMPLOYEE SAVINGS PLANS

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS The Company has defined benefit pension plans and supplemental plans which are non-contributory pension plans. In January 2003, the Company made a $52 million contribution to one of the defined benefit pension plans. The Company also provides certain health care and life insurance benefits for retired employees. Health care benefits are funded by contributions from the Company and the retiree, with the retiree contributions adjusted to match the provisions of the Company's health care plans. The Company's retiree life insurance plan is non-contributory.

91

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

18. PENSION PLANS, OTHER POSTRETIREMENT BENEFITS AND EMPLOYEE SAVINGS PLANS
(CONTINUED)

The following table sets forth the Company's pension and other postretirement benefits changes in benefit obligation, fair value of plan assets, funded status and amounts recognized in the financial statements as of December 31, 2002 and 2001.

                                                         PENSION BENEFITS     OTHER BENEFITS
                                                         ----------------     ---------------
                                                         2002        2001     2002      2001
millions                                                 -----       ----     -----     -----
CHANGE IN BENEFIT OBLIGATION
Benefit obligation at beginning of year                  $ 417       $377     $ 123     $  75
Service cost                                                14         11         5         3
Interest cost                                               29         27         8         5
Plan amendments                                             --         10        (7)       20
Actuarial loss                                              61         18         8        25
Foreign currency exchange rate change                       --         (2)       --        --
Benefit payments and settlements                           (32)       (24)       (6)       (5)
                                                         -----       ----     -----     -----
Benefit obligation at end of year                        $ 489       $417     $ 131     $ 123
                                                         -----       ----     -----     -----
CHANGE IN PLAN ASSETS
Fair value of plan assets at beginning of year           $ 338       $396     $  --     $  --
Actual return on plan assets                               (26)       (32)       --        --
Employer contributions                                       6          1         6         5
Foreign currency exchange rate change                       --         (3)       --        --
Benefit payments                                           (32)       (24)       (6)       (5)
                                                         -----       ----     -----     -----
Fair value of plan assets at end of year                 $ 286       $338     $  --     $  --
                                                         -----       ----     -----     -----
Funded status of the plan                                $(203)      $(79)    $(131)    $(123)
Unrecognized actuarial loss                                195         80        31        23
Unrecognized prior service cost                              8          8         8        16
Unrecognized initial asset                                  (1)        (2)       --        --
                                                         -----       ----     -----     -----
Total recognized                                         $  (1)      $  7     $ (92)    $ (84)
                                                         -----       ----     -----     -----
TOTAL RECOGNIZED AMOUNTS IN THE BALANCE SHEET CONSIST
  OF:
  Prepaid benefit cost                                   $  24       $ 23     $  --     $  --
  Accrued benefit liability                               (155)       (51)      (92)      (84)
  Intangible asset                                          11         31        --        --
  Other comprehensive expense                              119          4        --        --
                                                         -----       ----     -----     -----
Total recognized                                         $  (1)      $  7     $ (92)    $ (84)
                                                         -----       ----     -----     -----

Following are the weighted-average assumptions used by the Company in determining the accumulated pension and postretirement benefit obligations as of December 31, 2002 and 2001:

                                                                PENSION
                                                               BENEFITS        OTHER BENEFITS
                                                             -------------     ---------------
                                                             2002     2001     2002      2001
percent                                                      ----     ----     -----     -----
Discount rate                                                6.75%    7.25%    6.75%     7.25%
Long-term rate of return on plan assets                      8.0%     9.0%      N/A       n/a
Rates of increase in compensation levels                     5.0%     5.0%      5.0%      5.0%

92

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

18. PENSION PLANS, OTHER POSTRETIREMENT BENEFITS AND EMPLOYEE SAVINGS PLANS
(CONTINUED)

For measurement purposes, a 9% annual rate of increase in the per capita cost of covered health care benefits was assumed for 2002. The rate was assumed to decrease gradually to 5% in 2006 and later years.

                                                      PENSION BENEFITS      OTHER BENEFITS
                                                     ------------------   ------------------
                                                     2002   2001   2000   2002   2001   2000
millions                                             ----   ----   ----   ----   ----   ----
COMPONENTS OF NET PERIODIC BENEFIT COST
Service cost                                         $ 14   $ 11   $  8   $ 5    $ 3    $ 2
Interest cost                                          29     27     15     8      6      4
Expected return on plan assets                        (31)   (28)   (13)   --     --     --
Amortization values and deferrals                       4      1     --     1     (1)    (1)
                                                     ----   ----   ----   ---    ---    ---
Net periodic benefit cost                            $ 16   $ 11   $ 10   $14    $ 8    $ 5
                                                     ----   ----   ----   ---    ---    ---

The projected benefit obligation, accumulated benefit obligation and fair value of plan assets for the pension plans with accumulated benefit obligations in excess of plan assets were $467 million, $404 million and $251 million, respectively, as of December 31, 2002, and $395 million, $346 million and $297 million, respectively, as of December 31, 2001. The Company's benefit obligation under the unfunded pension plans are secured by the Anadarko Petroleum Corporation Executives and Directors Benefits Trust. See Note 10.
The assumed health care cost trend rate has a significant effect on the amounts reported for the health care plan. A 1% change in the assumed health care cost trend rate would have the following effects:

                                                              1% INCREASE   1% DECREASE
millions                                                      -----------   -----------
Effect on total of service and interest cost components           $ 2          $ (2)
Effect on postretirement benefit obligation                       $15          $(14)

EMPLOYEE SAVINGS PLAN The Company has an employee savings plan (ESP), which is a defined contribution plan. The Company matches a portion of employees' contributions with shares of the Company's common stock. Participation in the ESP is voluntary and all regular employees of the Company are eligible to participate. The Company charged to expense plan contributions of $12 million, $11 million and $7 million during 2002, 2001 and 2000, respectively. The 2002 and 2001 contributions were funded through the Employee Stock Ownership Plan (ESOP).

EMPLOYEE STOCK OWNERSHIP PLAN In July 2000, Anadarko adopted the Anadarko Holding ESOP and the shares in the ESOP were converted to shares of Anadarko common stock. In July 2000, the ESOP consisted of 1.2 million shares or $74 million of common stock (the ESOP shares) to be used to fund the Company's matching obligation under the Anadarko Holding Thrift Plan. All domestic regular employees of Anadarko Holding were eligible to participate in the ESOP. Effective December 31, 2000, the ESOP was merged into the Anadarko Holding Thrift Plan, which was merged into the Anadarko ESP. Beginning January 2001, the Company began using unallocated ESOP shares for Company matching under the Anadarko ESP.
The ESOP shares, which are held in trust, were originally purchased with the proceeds from a 30-year loan from Anadarko Holding in 1997. These shares were pledged as collateral for the loan. As loan payments are made, shares are released from collateral, based on the proportion of debt service paid. Scheduled principal and interest requirements are funded with dividends paid on the ESOP shares and with cash contributions from the Company. Principal or interest prepayments may be made to ensure that the Company's minimum matching obligation is met.
Shares held by the ESOP are included in the computation of earnings per share as ESOP shares are released from collateral. Releases of ESOP shares will be allocated to participants' accounts and will be charged to compensation expense at the fair market value of the shares on the date of the employer match.

93

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

18. PENSION PLANS, OTHER POSTRETIREMENT BENEFITS AND EMPLOYEE SAVINGS PLANS
(CONTINUED)

As of December 31, 2002 and 2001, the unallocated shares in the ESOP were 0.7 million and 0.9 million, respectively, and the fair value of unallocated ESOP shares at December 31, 2002 and 2001 was $32 million and $52 million, respectively. In 2000, compensation cost related to the allocation of ESOP shares to participants' accounts, other than expense under the ESP plan, was $2 million. In 2002 and 2001, no compensation cost related to the allocation of ESOP shares, other than expense under the ESP, was recorded.

19. CONTINGENCIES

GENERAL The Company is a defendant in a number of lawsuits and is involved in governmental proceedings arising in the ordinary course of business, including, but not limited to, royalty claims, contract claims and environmental claims. The Company has also been named as a defendant in various personal injury claims, including numerous claims by employees of third-party contractors alleging exposure to asbestos and benzene while working at a refinery in Corpus Christi, Texas, which Anadarko Holding sold in segments in 1987 and 1989. While the ultimate outcome and impact on the Company cannot be predicted with certainty, Management believes that the resolution of these proceedings will not have a material adverse effect on the consolidated financial position of the Company, although results of operations and cash flow could be significantly impacted in the reporting periods in which such matters are resolved. Discussed below are several specific proceedings.

ROYALTY LITIGATION During September 2000, the Company was named as a defendant in a case styled U.S. of America ex rel. Harold E. Wright v. AGIP Company, et al. (the "Gas Qui Tam case") filed in the U.S. District Court for the Eastern District of Texas, Lufkin Division. This lawsuit generally alleges that the Company and 118 other defendants improperly measured and otherwise undervalued natural gas in connection with a payment of royalties on production from federal and Indian lands. The case has been transferred to the U.S. District Court, Multi-District Litigation Docket pending in Wyoming. Based on the Company's present understanding of the various governmental and False Claims Act proceedings described above, the Company believes that it has substantial defenses to these claims and intends to vigorously assert such defenses. However, if the Company is found to have violated the Civil False Claims Act, the Company could be subject to a variety of sanctions, including treble damages and substantial monetary fines. Motions to dismiss on the grounds that plaintiffs did not provide new information for the government to file suit upon were filed in January 2003, with a hearing date expected in May 2003.
A group of royalty owners purporting to represent Anadarko Holding's gas royalty owners in Texas (Neinast, et al.) was granted class action certification in December 1999, by the 21st Judicial District Court of Washington County, Texas, in connection with a gas royalty underpayment case against the Company. This certification did not constitute a review by the Court of the merits of the claims being asserted. The royalty owners' pleadings did not specify the damages being claimed, although most recently a demand for damages in the amount of $100 million was asserted. The Company appealed the class certification order. A favorable decision from the Houston Court of Appeals decertified the class. The royalty owners did not appeal this matter to the Texas Supreme Court and the decision from the Houston Court of Appeals became final in the second quarter of 2002. The royalty owners recently filed a new petition alleging that the class may properly be brought so long as "sub-class" groups are broken out. The Company is vigorously contesting this new petition.
A class action lawsuit entitled Gilbert H. Coulter, et al. v. Anadarko Petroleum Corporation has been certified in the 26th Judicial District Court, Stevens County, Kansas. In this action, the royalty owners contend that royalty was underpaid as a result of the deduction for certain post-production costs in the calculation of royalty. The Company believes that its method of calculating royalty was proper and that its gas was marketable in the condition produced, and thus plaintiffs' claims are without merit. This case was certified as a class action in August 2000 and was tried in February 2002. It is uncertain at this time when the trial court will render its ruling.

SUPERFUND -- OPERATING INDUSTRIES, INC. (FEDERAL) -- The former municipal industrial landfill, located in Monterey Park, California, was operational between 1948 and 1984. Anadarko Holding was noticed as a

94

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

19. CONTINGENCIES (CONTINUED)

Potentially Responsible Party in June 1986 for its Wilmington Production Field's and Wilmington Refinery's contributions. The Company participated in a settlement with the Environmental Protection Agency. The Company's share of the settlement was about $5 million.

CITGO LITIGATION CITGO Petroleum Corporation's (CITGO) claims arise out of an Asset Purchase and Contribution Agreement in 1987 whereby Anadarko Holding's predecessor sold a refinery located in Corpus Christi, Texas, to CITGO's predecessor. After the sale of the refinery, numerous individuals living near the refinery sued CITGO (the Neighborhood Litigation) thereby implicating the Asset Purchase and Contribution Agreement indemnity provision. CITGO and Anadarko Holding eventually entered into a settlement agreement to allocate, on an interim basis, each party's liability for defense and liability cost in that and related litigation. That agreement provides that once the Neighborhood Litigation and certain related claims are resolved, then the parties will determine their final indemnity obligations to each other through binding arbitration. At the present time, Anadarko Holding and CITGO have agreed to defer arbitrating the allocation of responsibility for this liability in order to focus their efforts on a global settlement. Arbitration will resume upon request of either CITGO or Anadarko Holding. In conjunction with this matter, Anadarko Holding sued Continental Insurance for denial of coverage for claims related to this dispute. Anadarko Holding and Continental Insurance settled the insurance coverage litigation which resulted in Continental Insurance paying a portion of Anadarko Holding's claims. Negotiations and discussions with CITGO continue. Anadarko Holding has offered to settle all outstanding issues for approximately $4 million and a liability for this amount has been accrued.

KANSAS AD VALOREM TAX

General The Natural Gas Policy Act of 1978 allowed a "severance, production or similar" tax to be included as an add-on, over and above the maximum lawful price charged for natural gas. Based on the Federal Energy Regulatory Commission (FERC) ruling that the Kansas ad valorem tax was such a tax, the Company collected the Kansas ad valorem tax.

Background of PanEnergy Litigation FERC's ruling regarding the ability of producers to collect the Kansas ad valorem tax was appealed to the United States Court of Appeals for the District of Columbia Circuit (D.C. Circuit). The Court held in June 1988 that FERC failed to provide a reasoned basis for its findings and remanded the case to FERC.
Ultimately, the D.C. Circuit issued a decision on August 2, 1996 ruling that producers must refund all Kansas ad valorem taxes collected relating to production since October 1983. The Company filed a petition for writ of certiorari with the Supreme Court. That petition was denied on May 12, 1997.

PanEnergy Litigation On May 13, 1997, the Company filed a lawsuit in the Federal District Court for the Southern District of Texas against PanEnergy seeking declaration that pursuant to prior agreements Anadarko is not required to issue refunds to PanEnergy for the principal amount of $14 million (before taxes) and, if the petition for adjustment is denied in its entirety by FERC with respect to PanEnergy refunds, interest in an amount of $38 million (before taxes). The Company also sought from PanEnergy the return of the $1 million (before taxes) charged against income in 1993 and 1994. In October 2000, the U.S. Magistrate issued recommendations concerning motions for summary judgment previously filed by both parties. In essence, the Magistrate's recommendation finds that the Company should be responsible for refunds attributable to the time period following August 1, 1985 while Duke Energy (as the successor company to Anadarko Production Company) should be responsible for refunds attributable to the time period before August 1, 1985.
The Company has reached a settlement agreement with PanEnergy that requires the Company to pay $15 million for settlement in full of all matters relating to the refunds of Kansas ad valorem tax reimbursements collected by the Company as first seller from August 1, 1985 through 1988. The settlement agreement was approved by FERC and paid by Anadarko during 2001. The settlement agreement does not have any impact on

95

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

19. CONTINGENCIES (CONTINUED)

the outstanding dispute between the Company and PanEnergy in connection with the refunds that relate to the Cimmaron River System. Anadarko's net income for 2001 included a $15 million charge (before taxes) related to the settlement agreement. Discussions with the Kansas Corporation Commission and PanEnergy to reach a settlement of the Cimmaron River System dispute are ongoing. At this time, it is estimated that a resolution may be reached in the first quarter of 2003, that may result in payment of about $6 million by the Company. A provision was charged against income in 2001.

Other Litigation The Company has a reserve of about $2 million for Kansas ad valorem tax refunds. This amount reflects all principal and interest which may be due at the conclusion of all regulatory proceedings and litigation to parties other than PanEnergy.

LEASE AGREEMENT The Company, through one of its affiliates, is a party to a lease agreement (base lease) for the leveraged lease financing of the Corpus Christi West Plant Refinery (West Plant) with an initial term expiring December 31, 2003, and successive renewal periods lasting through January 31, 2011. At the conclusion of the initial term of the base lease, any renewal period or January 31, 2011, the Company has the right to purchase the West Plant at the fair market sales value. In connection with the sale by Anadarko Holding of its refining business in 1987 and 1989, the West Plant was subleased to CITGO with sublease payments during the initial term equal to the Company's base lease payments and during any renewal period equal to the lesser of the base lease rental, which will be tied to the annual fair market rental value or a specified maximum amount. Additionally, CITGO has the option under the sublease to purchase the West Plant from the Company at the conclusion of the initial term or any renewal term at the fair market sales value, or on January 31, 2011 at a nominal price. If the fair market rental value of the base lease during any renewal term exceeds CITGO's maximum obligation under the sublease, or if CITGO purchases the West Plant on January 31, 2011 and the fair market sales value of the West Plant is greater than the purchase amount specified in the sublease, the Company will be obligated to pay the excess amounts. The Company is unable at this time to determine the fair market rental value or the fair market sales value of the West Plant, but will at least annually evaluate the potential effect of the obligation. Thus, no liability has been recognized as of December 31, 2002.

GUARANTEES Anadarko is guarantor for certain obligations of its wholly-owned and consolidated subsidiaries, which are included in the consolidated financial statements and notes. In addition, the Company is guarantor for specific financial obligations of two trona mining affiliates. The investments in these entities, which are not consolidated subsidiaries, are accounted for using the equity method. The Company has guaranteed a portion of amounts due under a revolving credit agreement and various letters of credit used to secure Industrial Revenue Bonds and environmental surety bonds. The Company's guarantee under the revolving credit agreement expires in 2005 coinciding with the maturity of that agreement. Expiration dates of the Company's guarantees under the letters of credit securing the Industrial Revenue Bonds and environmental surety bonds range from 2003 to 2004; however, it is the intent of the Company to renew these letters of credit and the related guarantees until the maturity dates of the obligations which range from 2003 to 2018. The amounts the Company would be obligated to pay should the affiliates default on these obligations would be up to $13 million for the revolving credit agreement, $8 million for environmental surety bonds and $15 million for the Industrial Revenue Bonds. No liability has been recognized for these guarantees as of December 31, 2002.

96

ANADARKO PETROLEUM CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
YEARS ENDED DECEMBER 31, 2002, 2001 AND 2000

19. CONTINGENCIES (CONTINUED)

In connection with its various acquisitions, the Company routinely indemnifies the former officers and directors of acquired companies in respect to acts or omissions occurring prior to the effective date of the acquisition. The Company also agrees to maintain directors' and officers' liability insurance on these individuals with respect to acts or omissions occurring prior to the acquisition, generally for a period of six years. No liability has been recognized for these indemnifications.
The Company also provides certain indemnifications in relation to dispositions of assets. These indemnifications typically relate to disputes, litigation or tax matters existing at the date of disposition. In connection with a sale of properties in 2001, the Company indemnified the purchaser for the use of certain currency remeasurement losses utilized by the Company in previously filed tax returns, which are currently being evaluated by the taxing authorities. The Company believes it is probable that these losses will be disallowed and will have to be settled with the purchaser in cash. The Company has a $22 million liability recorded for the contingency.

97

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

OIL AND GAS EXPLORATION AND PRODUCTION ACTIVITIES

The following is historical revenue and cost information relating to the Company's oil and gas activities.

COSTS EXCLUDED

Excluded from amounts subject to amortization as of December 31, 2002 and 2001 are $3.1 billion and $3.6 billion, respectively, of costs associated with unevaluated properties and major development projects. The majority of the evaluation activities are expected to be completed within five to ten years.

COSTS EXCLUDED BY YEAR INCURRED

                                                          YEAR COSTS INCURRED        EXCLUDED
                                                      ----------------------------   COSTS AT
                                                      PRIOR                          DEC. 31,
                                                      YEARS    2000    2001   2002     2002
millions                                              -----   ------   ----   ----   --------
Property acquisition                                   $43    $1,085   $ 99   $193    $1,420
Exploration                                             25       646    423    284     1,378
Capitalized interest                                     5        50    109    123       287
                                                       ---    ------   ----   ----    ------
Total                                                  $73    $1,781   $631   $600    $3,085
                                                       ---    ------   ----   ----    ------

COSTS EXCLUDED BY COUNTRY

                                                                            OTHER
                                             U.S.    CANADA   ALGERIA   INTERNATIONAL   TOTAL
millions                                    ------   ------   -------   -------------   ------
Property acquisition                        $1,355    $ 65     $  --        $ --        $1,420
Exploration                                    787     410        11         170         1,378
Capitalized interest                           238      34        --          15           287
                                            ------    ----     -----        ----        ------
Total                                       $2,380    $509     $  11        $185        $3,085
                                            ------    ----     -----        ----        ------

CHANGES IN COSTS EXCLUDED BY COUNTRY

                                                                            OTHER
                                            U.S.     CANADA   ALGERIA   INTERNATIONAL    TOTAL
millions                                   -------   ------   -------   -------------   -------
DECEMBER 31, 2000                          $ 2,308   $ 412     $ 15         $ 163       $ 2,898
Additional costs incurred in 2001              939     528        1            96         1,564
Costs transferred to DD&A pool in 2001        (487)   (348)     (16)          (38)         (889)
                                           -------   -----     ----         -----       -------
DECEMBER 31, 2001                            2,760     592       --           221         3,573
Additional costs incurred in 2002              899      71       11            66         1,047
Costs transferred to DD&A pool in 2002      (1,279)   (154)      --          (102)       (1,535)
                                           -------   -----     ----         -----       -------
DECEMBER 31, 2002                          $ 2,380   $ 509     $ 11         $ 185       $ 3,085
                                           -------   -----     ----         -----       -------

98

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

CAPITALIZED COSTS RELATED TO OIL AND GAS PRODUCING ACTIVITIES

                                                               2002      2001
millions                                                      -------   -------
UNITED STATES
Capitalized
  Unproved properties                                         $ 2,380   $ 2,760
  Proved properties                                            12,639    10,464
                                                              -------   -------
                                                               15,019    13,224
Accumulated depreciation, depletion and amortization            5,621     5,007
                                                              -------   -------
Net capitalized costs                                           9,398     8,217
                                                              -------   -------
CANADA
Capitalized
  Unproved properties                                             509       592
  Proved properties                                             2,870     2,493
                                                              -------   -------
                                                                3,379     3,085
Accumulated depreciation, depletion and amortization            1,309     1,086
                                                              -------   -------
Net capitalized costs                                           2,070     1,999
                                                              -------   -------
ALGERIA
Capitalized
  Unproved properties                                              11        --
  Proved properties                                             1,052       907
                                                              -------   -------
                                                                1,063       907
Accumulated depreciation, depletion and amortization              173       106
                                                              -------   -------
Net capitalized costs                                             890       801
                                                              -------   -------
OTHER INTERNATIONAL
Capitalized
  Unproved properties                                             185       221
  Proved properties                                               821       610
                                                              -------   -------
                                                                1,006       831
Accumulated depreciation, depletion and amortization              160        83
                                                              -------   -------
Net capitalized costs                                             846       748
                                                              -------   -------
TOTAL
Capitalized
  Unproved properties                                           3,085     3,573
  Proved properties                                            17,382    14,474
                                                              -------   -------
                                                               20,467    18,047
Accumulated depreciation, depletion and amortization            7,263     6,282
                                                              -------   -------
Net capitalized costs                                         $13,204   $11,765
                                                              -------   -------

99

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

COSTS INCURRED IN OIL AND GAS PRODUCING ACTIVITIES

                                                               2002     2001     2000
millions                                                      ------   ------   ------
UNITED STATES -- Capitalized
Property acquisition
  Exploration                                                 $  341   $  156   $1,897
  Development                                                    248       31    2,984
Exploration                                                      654      840      353
Development                                                      715    1,196      777
                                                              ------   ------   ------
                                                               1,958    2,223    6,011
                                                              ------   ------   ------
CANADA -- Capitalized
Property acquisition
  Exploration                                                     25      309      437
  Development                                                      3      835    1,075
Exploration                                                      138      223       16
Development                                                      237      233       89
                                                              ------   ------   ------
                                                                 403    1,600    1,617
                                                              ------   ------   ------
ALGERIA -- Capitalized
Exploration                                                       15        2        7
Development                                                      140      179      155
                                                              ------   ------   ------
                                                                 155      181      162
                                                              ------   ------   ------
OTHER INTERNATIONAL -- Capitalized
Property acquisition
  Exploration                                                     11       30      122
  Development                                                     26       67      532
Exploration                                                       54       65       39
Development                                                      108      136       33
                                                              ------   ------   ------
                                                                 199      298      726
                                                              ------   ------   ------
TOTAL -- Capitalized
Property acquisition
  Exploration                                                    377      495    2,456
  Development                                                    277      933    4,591
Exploration                                                      861    1,130      415
Development                                                    1,200    1,744    1,054
                                                              ------   ------   ------
                                                              $2,715   $4,302   $8,516
                                                              ------   ------   ------


Development costs for 2002 include costs related to December 31, 2001 proved undeveloped reserves of $336 million for the United States, $65 million for Canada, $87 million for Algeria and $70 million for Other International, which total $558 million.

100

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

RESULTS OF OPERATIONS FOR PRODUCING ACTIVITIES

The following schedule includes only the revenues from the production and sale of gas, oil, condensate and natural gas liquids (NGLs). Results of operations from gas, oil and NGLs marketing and gas gathering are excluded. The income tax expense is calculated by applying the current statutory tax rates to the revenues after deducting costs, which include depreciation, depletion and amortization (DD&A) allowances, after giving effect to permanent differences. The results of operations exclude general office overhead and interest expense attributable to oil and gas activities.

                                                               2002     2001     2000
millions                                                      ------   ------   ------
UNITED STATES
Net revenues from production
  Third-party sales of gas, oil, condensate and NGLs          $1,581   $2,237   $1,443
  Gas and oil sold to consolidated affiliates                    804    1,212      660
                                                              ------   ------   ------
                                                               2,385    3,449    2,103
Production (lifting) costs                                       605      671      418
Depreciation, depletion and amortization                         710      792      429
Impairments related to oil and gas properties                     --    1,701       --
                                                              ------   ------   ------
                                                               1,070      285    1,256
Income tax expense                                               370       81      437
                                                              ------   ------   ------
Results of operations                                         $  700   $  204   $  819
                                                              ------   ------   ------
DD&A rate per net equivalent barrel                           $ 5.46   $ 5.54   $ 5.16
                                                              ------   ------   ------
CANADA
Net revenues from production
  Third-party sales of gas, oil, condensate and NGLs          $  633   $  760   $  298
  Gas and oil sold to consolidated affiliates                     12       23       20
                                                              ------   ------   ------
                                                                 645      783      318
Production (lifting) costs                                       224      203       85
Depreciation, depletion and amortization                         215      225       76
Impairments related to oil and gas properties                     --      808       --
                                                              ------   ------   ------
                                                                 206     (453)     157
Income tax expense (benefit)                                      87     (193)      70
                                                              ------   ------   ------
Results of operations                                         $  119   $ (260)  $   87
                                                              ------   ------   ------
DD&A rate per net equivalent barrel                           $ 6.09   $ 6.62   $ 6.12
                                                              ------   ------   ------
ALGERIA
Net revenues from production
  Third-party sales of oil                                    $  182   $   59   $   85
  Oil sold to consolidated affiliates                            392      136      186
                                                              ------   ------   ------
                                                                 574      195      271
Production (lifting) costs                                        41       21       23
Depreciation, depletion and amortization                          69       24       26
                                                              ------   ------   ------
                                                                 464      150      222
Income tax expense                                               176       54      137
                                                              ------   ------   ------
Results of operations                                         $  288   $   96   $   85
                                                              ------   ------   ------
DD&A rate per net equivalent barrel                           $ 2.93   $ 3.00   $ 2.78
                                                              ------   ------   ------

101

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

RESULTS OF OPERATIONS FOR PRODUCING ACTIVITIES (CONTINUED)

                                                               2002     2001     2000
millions                                                      ------   ------   ------
OTHER INTERNATIONAL
Net revenues from production
  Third-party sales of gas, oil, condensate and NGLs          $  131   $  193   $  133
  Oil sold to consolidated affiliates                             28       --       --
                                                              ------   ------   ------
                                                                 159      193      133
Production (lifting) costs                                        68       80       61
Depreciation, depletion and amortization                          62       69       39
Impairments related to oil and gas properties                     39       37       50
                                                              ------   ------   ------
                                                                 (10)       7      (17)
Income tax expense (benefit)                                      (4)       3       (9)
                                                              ------   ------   ------
Results of operations                                         $   (6)  $    4   $   (8)
                                                              ------   ------   ------
DD&A rate per net equivalent barrel                           $ 7.75   $ 5.31   $ 5.36
                                                              ------   ------   ------
TOTAL
Net revenues from production
  Third-party sales of gas, oil, condensate and NGLs          $2,527   $3,249   $1,959
  Gas and oil sold to consolidated affiliates                  1,236    1,371      866
                                                              ------   ------   ------
                                                               3,763    4,620    2,825
Production (lifting) costs                                       938      975      587
Depreciation, depletion and amortization                       1,056    1,110      570
Impairments related to oil and gas properties                     39    2,546       50
                                                              ------   ------   ------
                                                               1,730      (11)   1,618
Income tax expense (benefit)                                     629      (55)     635
                                                              ------   ------   ------
Results of operations                                         $1,101   $   44   $  983
                                                              ------   ------   ------
DD&A rate per net equivalent barrel                           $ 5.36   $ 5.61   $ 5.08
                                                              ------   ------   ------

102

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

OIL AND GAS RESERVES

The following table shows internal estimates prepared by the Company's engineers of proved reserves and proved developed reserves, net of royalty interests, of natural gas, crude oil, condensate and NGLs owned at year-end and changes in proved reserves during the last three years. Volumes for natural gas are in billions of cubic feet (Bcf) at a pressure base of 14.73 pounds per square inch and volumes for oil, condensate and NGLs are in millions of barrels (MMBbls). Total volumes are in millions of barrels of oil equivalent (MMBOE). For this computation, one barrel is the equivalent of six thousand cubic feet of gas. NGLs are included with oil and condensate reserves and the associated shrinkage has been deducted from the gas reserves.
Algerian reserves are shown in accordance with the Production Sharing Agreement (PSA). The reserves include estimated quantities allocated to Anadarko for recovery of costs and Algerian taxes and Anadarko's net equity share after recovery of such costs. Other international reserves are shown in accordance with the respective PSA or risk service contract and are calculated using the economic interest method.
The Company's reserves increased in 2002 primarily from exploration and development drilling and corporate acquisitions, offset in part by production, downward revisions to prior estimates and divestitures. The downward revisions in 2002 were partially due to a downward price revision of 36 MMBOE in Venezuela. Under the terms of Anadarko's risk service contract with the national oil company of Venezuela, Anadarko earns a fee that is translated into barrels of oil based on current prices. This means that higher oil prices reduce the Company's reported oil reserves and production volumes from that project; however, reserve and production fluctuations due to the economic interest calculation have no impact on the value of the project. The Company's reserves increased in 2001 primarily from exploration and development drilling and corporate acquisitions, offset in part by production, divestitures and downward revisions to prior estimates due to low year-end prices. The Company's reserves increased in 2000 primarily from a corporate acquisition, exploration and development drilling, improved recovery and high gas prices at year-end 2000 compared to year-end 1999.
The Company emphasizes that the volumes of reserves shown below are estimates which, by their nature, are subject to revision. The estimates are made using all available geological and reservoir data as well as production performance data. These estimates are reviewed and revised, either upward or downward, as warranted by additional data. Revisions are necessary due to changes in assumptions based on, among other things, reservoir performance, prices, economic conditions and governmental restrictions. Decreases in prices, for example, may cause a reduction in some proved reserves due to uneconomic conditions.

103

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

OIL AND GAS RESERVES (CONTINUED)

                                                   NATURAL GAS                    OIL, CONDENSATE AND NGLS
                                                      (BCF)                               (MMBBLS)
                                          ------------------------------   ---------------------------------------
                                                           OTHER                                     OTHER
                                          U.S.    CANADA   INT'L   TOTAL   U.S.   CANADA   ALGERIA   INT'L   TOTAL
                                          -----   ------   -----   -----   ----   ------   -------   -----   -----
PROVED RESERVES
DECEMBER 31, 1999                         2,507      --      --    2,507   284      --       289       --      573
Revisions of prior estimates                102     (30)     (5)      67    23      (5)       --        6       24
Extensions, discoveries and other
  additions                                 665      15      --      680     8       3        84       --       95
Improved recovery                            30      --      --       30     9      --        --       --        9
Purchases in place                        2,253     910      33    3,196   161      85        --      147      393
Sales in place                               --      (2)     --       (2)   --      --        --       (1)      (1)
Production                                 (338)    (46)     (1)    (385)  (27)     (4)       (9)      (7)     (47)
                                          -----   -----     ---    -----   ---     ---       ---      ---    -----
DECEMBER 31, 2000                         5,219     847      27    6,093   458      79       364      145    1,046
Revisions of prior estimates               (172)    (17)     --     (189)  (23)     (3)      (12)      15      (23)
Extensions, discoveries and other
  additions                               1,186     171      --    1,357    91       8        44       30      173
Improved recovery                            (9)      2      --       (7)   (5)      9        --       --        4
Purchases in place                            2     407     146      555     1      30        --       33       64
Sales in place                               (5)    (48)    (26)     (79)   (1)     (1)       --      (45)     (47)
Production                                 (573)   (121)     (1)    (695)  (48)    (14)       (9)     (14)     (85)
                                          -----   -----     ---    -----   ---     ---       ---      ---    -----
DECEMBER 31, 2001                         5,648   1,241     146    7,035   473     108       387      164    1,132
REVISIONS OF PRIOR ESTIMATES                 78     (42)     (2)      34    33     (15)        5      (52)     (29)
EXTENSIONS, DISCOVERIES AND OTHER
  ADDITIONS                                 445     303      --      748    51       8         3       --       62
IMPROVED RECOVERY                            (6)     --      --       (6)    8      --        --       --        8
PURCHASES IN PLACE                           86       1      --       87    60      --        --       13       73
SALES IN PLACE                              (53)    (25)     --      (78)   (2)    (24)       --       --      (26)
PRODUCTION                                 (505)   (135)     --     (640)  (45)    (13)      (23)      (8)     (89)
                                          -----   -----     ---    -----   ---     ---       ---      ---    -----
DECEMBER 31, 2002                         5,693   1,343     144    7,180   578      64       372      117    1,131
                                          -----   -----     ---    -----   ---     ---       ---      ---    -----
PROVED DEVELOPED RESERVES
December 31, 1999                         1,672      --      --    1,672   134      --        61       --      195
December 31, 2000                         4,424     720      16    5,160   355      59        98       85      597
December 31, 2001                         4,247   1,028      --    5,275   321      79       154       72      626
DECEMBER 31, 2002                         4,299     995      --    5,294   377      46       191       72      686

104

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES (CONTINUED)
(UNAUDITED)

OIL AND GAS RESERVES (CONTINUED)

                                                                                TOTAL
                                                                               (MMBOE)
                                                               ----------------------------------------
                                                                                          OTHER
                                                               U.S.    CANADA   ALGERIA   INT'L   TOTAL
                                                               -----   ------   -------   -----   -----
PROVED RESERVES
DECEMBER 31, 1999                                                702     --       289       --      991
Revisions of prior estimates                                      39    (10)       --        6       35
Extensions, discoveries and other additions                      118      6        84       --      208
Improved recovery                                                 14     --        --       --       14
Purchases in place                                               537    237        --      152      926
Sales in place                                                    --     --        --       (1)      (1)
Production                                                       (83)   (13)       (9)      (7)    (112)
                                                               -----    ---       ---      ---    -----
DECEMBER 31, 2000                                              1,327    220       364      150    2,061
Revisions of prior estimates                                     (52)    (6)      (12)      15      (55)
Extensions, discoveries and other additions                      290     36        44       30      400
Improved recovery                                                 (6)     9        --       --        3
Purchases in place                                                 1     99        --       57      157
Sales in place                                                    (1)    (9)       --      (50)     (60)
Production                                                      (144)   (34)       (9)     (14)    (201)
                                                               -----    ---       ---      ---    -----
DECEMBER 31, 2001                                              1,415    315       387      188    2,305
REVISIONS OF PRIOR ESTIMATES                                      46    (23)        5      (51)     (23)
EXTENSIONS, DISCOVERIES AND OTHER ADDITIONS                      124     59         3       --      186
IMPROVED RECOVERY                                                  8     --        --       --        8
PURCHASES IN PLACE                                                74     --        --       13       87
SALES IN PLACE                                                   (11)   (28)       --       --      (39)
PRODUCTION                                                      (130)   (35)      (23)      (8)    (196)
                                                               -----    ---       ---      ---    -----
DECEMBER 31, 2002                                              1,526    288       372      142    2,328
                                                               -----    ---       ---      ---    -----
PROVED DEVELOPED RESERVES
December 31, 1999                                                412     --        61       --      473
December 31, 2000                                              1,092    179        98       88    1,457
December 31, 2001                                              1,029    250       154       72    1,505
DECEMBER 31, 2002                                              1,093    212       191       72    1,568

105

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

DISCOUNTED FUTURE NET CASH FLOWS

Estimates of future net cash flows from proved reserves of gas, oil, condensate and NGLs were made in accordance with SFAS No. 69, "Disclosures about Oil and Gas Producing Activities." The amounts were prepared by the Company's engineers and are shown in the following table. The estimates are based on prices at year-end. Gas prices are escalated only for fixed and determinable amounts under provisions in some contracts. Estimated future cash inflows are reduced by estimated future development, production, abandonment and dismantlement costs based on year-end cost levels, assuming continuation of existing economic conditions, and by estimated future income tax expense. Income tax expense, both U.S. and foreign, is calculated by applying the existing statutory tax rates, including any known future changes, to the pretax net cash flows giving effect to any permanent differences and reduced by the applicable tax basis. The effect of tax credits is considered in determining the income tax expense.
At December 31, 2002, the present value (discounted at 10%) of future net revenues from Anadarko's proved reserves was $21.1 billion, before income taxes, and $14.1 billion, after income taxes, (stated in accordance with the regulations of the SEC and the Financial Accounting Standards Board). The after income taxes increase of $6.1 billion or 76% in 2002 compared to 2001 is primarily due to significantly higher natural gas and crude oil prices at year-end 2002, additions of proved reserves related to successful drilling worldwide and corporate acquisitions.
The present value of future net revenues does not purport to be an estimate of the fair market value of Anadarko's proved reserves. An estimate of fair value would also take into account, among other things, anticipated changes in future prices and costs, the expected recovery of reserves in excess of proved reserves and a discount factor more representative of the time value of money and the risks inherent in producing oil and gas. Significant changes in estimated reserve volumes or commodity prices could have a material effect on the Company's consolidated financial statements.
Under the full cost method of accounting, a non-cash charge to earnings related to the carrying value of the Company's oil and gas properties on a country-by-country basis may be required when prices are low. Whether the Company will be required to take such a charge depends on the prices for crude oil and natural gas at the end of any quarter, as well as the effect of both capital expenditures and changes to proved reserves during that quarter. If a non-cash charge were required, it would reduce earnings for the period and result in lower DD&A expense in future periods.
As a result of low oil and gas prices at September 30, 2001, Anadarko's capitalized costs of oil and gas properties in the United States, Canada and Argentina exceeded the ceiling limitation, and the Company recorded a $2.5 billion ($1.6 billion after taxes) non-cash write-down in the third quarter of 2001. The pre-tax write-down is reflected as additional accumulated DD&A in the Company's balance sheet.

106

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS RELATING TO PROVED OIL AND GAS RESERVES

                                                               2002      2001      2000
millions                                                      -------   -------   -------
UNITED STATES
Future cash inflows                                           $36,536   $19,890   $57,027
Future production costs                                         8,989     6,072     8,175
Future development costs                                        2,142     1,759     1,182
                                                              -------   -------   -------
Future net cash flows before income taxes                      25,405    12,059    47,670
10% annual discount for estimated timing of cash flows         12,695     5,805    22,911
                                                              -------   -------   -------
Discounted future net cash flows before income taxes           12,710     6,254    24,759
Future income taxes, net of 10% annual discount                 4,113     1,764     8,546
                                                              -------   -------   -------
Standardized measure of discounted future net cash flows
  relating to proved oil and gas reserves                       8,597     4,490    16,213
                                                              -------   -------   -------
CANADA
Future cash inflows                                             6,609     4,325     8,720
Future production costs                                         1,478     1,165       866
Future development costs                                          516       425       288
                                                              -------   -------   -------
Future net cash flows before income taxes                       4,615     2,735     7,566
10% annual discount for estimated timing of cash flows          2,048     1,030     3,261
                                                              -------   -------   -------
Discounted future net cash flows before income taxes            2,567     1,705     4,305
Future income taxes, net of 10% annual discount                   821       465     1,880
                                                              -------   -------   -------
Standardized measure of discounted future net cash flows
  relating to proved oil and gas reserves                       1,746     1,240     2,425
                                                              -------   -------   -------
ALGERIA
Future cash inflows                                            11,597     7,466     8,410
Future production costs                                         1,209     1,113     1,011
Future development costs                                          478       313       408
                                                              -------   -------   -------
Future net cash flows before income taxes                       9,910     6,040     6,991
10% annual discount for estimated timing of cash flows          5,127     3,089     3,807
                                                              -------   -------   -------
Discounted future net cash flows before income taxes            4,783     2,951     3,184
Future income taxes, net of 10% annual discount                 1,747     1,109     1,108
                                                              -------   -------   -------
Standardized measure of discounted future net cash flows
  relating to proved oil and gas reserves                     $ 3,036   $ 1,842   $ 2,076
                                                              -------   -------   -------

107

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS RELATING TO PROVED OIL AND GAS RESERVES (CONTINUED)

                                                               2002      2001      2000
millions                                                      -------   -------   -------
OTHER INTERNATIONAL
Future cash inflows                                           $ 2,933   $ 2,242   $ 2,631
Future production costs                                           709       537       637
Future development costs                                          432       512       394
                                                              -------   -------   -------
Future net cash flows before income taxes                       1,792     1,193     1,600
10% annual discount for estimated timing of cash flows            747       562       705
                                                              -------   -------   -------
Discounted future net cash flows before income taxes            1,045       631       895
Future income taxes, net of 10% annual discount                   314       172       204
                                                              -------   -------   -------
Standardized measure of discounted future net cash flows
  relating to proved oil and gas reserves                         731       459       691
                                                              -------   -------   -------
TOTAL
Future cash inflows                                            57,675    33,923    76,788
Future production costs                                        12,385     8,887    10,689
Future development costs                                        3,568     3,009     2,272
                                                              -------   -------   -------
Future net cash flows before income taxes                      41,722    22,027    63,827
10% annual discount for estimated timing of cash flows         20,617    10,486    30,684
                                                              -------   -------   -------
Discounted future net cash flows before income taxes           21,105    11,541    33,143
Future income taxes, net of 10% annual discount                 6,995     3,510    11,738
                                                              -------   -------   -------
Standardized measure of discounted future net cash flows
  relating to proved oil and gas reserves                     $14,110   $ 8,031   $21,405
                                                              -------   -------   -------


Expected future development costs to develop proved undeveloped reserves as of December 31, 2002 in the United States are $970 million, $522 million and $190 million for 2003, 2004 and 2005, respectively. For Canada, the expected costs are $130 million, $76 million and $116 million for 2003, 2004 and 2005, respectively. For Algeria, the expected costs are $71 million, $64 million and $124 million for 2003, 2004 and 2005, respectively. For Other International, the expected costs are $54 million, $85 million and $41 million for 2003, 2004 and 2005, respectively. In total, the expected costs are $1.2 billion, $747 million and $471 million for 2003, 2004 and 2005, respectively.

108

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

CHANGES IN STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS RELATING TO PROVED OIL AND GAS RESERVES

                                                                2002       2001       2000
                          millions                            --------   --------   --------
UNITED STATES
Beginning of year                                             $  4,490   $ 16,213   $  2,794
Sales and transfers of oil and gas produced, net of
  production costs                                              (1,780)    (2,778)    (1,685)
Net changes in prices and production costs                       5,935    (19,309)     7,556
Changes in estimated future development costs                     (206)       183       (119)
Extensions, discoveries, additions and improved recovery,
  less related costs                                               999        624      2,719
Development costs incurred during the period                       331        337        126
Revisions of previous quantity estimates                           441       (453)       114
Purchases of minerals in place                                     532         17     11,841
Sales of minerals in place                                         (82)        (5)        (1)
Accretion of discount                                              625      2,476        386
Net change in income taxes                                      (2,349)     6,782     (7,476)
Other                                                             (339)       403        (42)
                                                              --------   --------   --------
End of year                                                      8,597      4,490     16,213
                                                              --------   --------   --------
CANADA
Beginning of year                                                1,240      2,425         --
Sales and transfers of oil and gas produced, net of
  production costs                                                (421)      (580)      (233)
Net changes in prices and production costs                         774     (3,319)        --
Changes in estimated future development costs                      (70)         2         --
Extensions, discoveries, additions and improved recovery,
  less related costs                                               541        279        101
Development costs incurred during the period                       157        101         --
Revisions of previous quantity estimates                          (259)       (38)      (165)
Purchases of minerals in place                                       3        593      4,568
Sales of minerals in place                                         (96)       (56)        --
Accretion of discount                                              171        431         --
Net change in income taxes                                        (356)     1,415     (1,880)
Other                                                               62        (13)        34
                                                              --------   --------   --------
End of year                                                      1,746      1,240      2,425
                                                              --------   --------   --------
ALGERIA
Beginning of year                                                1,842      2,076      1,588
Sales and transfers of oil produced, net of production costs      (533)      (174)      (248)
Net changes in prices and production costs                       2,316       (554)      (330)
Changes in estimated future development costs                     (314)        --         --
Extensions, discoveries, additions and improved recovery,
  less related costs                                                85         56        901
Development costs incurred during the period                       122        164        135
Accretion of discount                                              295        318        250
Net change in income taxes                                        (638)        (1)      (197)
Other                                                             (139)       (43)       (23)
                                                              --------   --------   --------
End of year                                                   $  3,036   $  1,842   $  2,076
                                                              --------   --------   --------

109

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL INFORMATION ON OIL AND GAS EXPLORATION
AND PRODUCTION ACTIVITIES
(UNAUDITED)

CHANGES IN STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS RELATING TO PROVED OIL AND GAS RESERVES (CONTINUED)

                                                                2002       2001       2000
                          millions                            --------   --------   --------
OTHER INTERNATIONAL
Beginning of year                                             $    459   $    691   $     --
Sales and transfers of oil and gas produced, net of
  production costs                                                 (91)      (113)       (72)
Net changes in prices and production costs                         757       (402)        --
Changes in estimated future development costs                        1         32         --
Extensions, discoveries, additions and improved recovery,
  less related costs                                                --        109         --
Development costs incurred during the period                        88         87         --
Revisions of previous quantity estimates                          (520)        75         --
Purchases of minerals in place                                     117        188        967
Sales of minerals in place                                          --       (199)        --
Accretion of discount                                               64         90         --
Net change in income taxes                                        (142)        32       (204)
Other                                                               (2)      (131)        --
                                                              --------   --------   --------
End of year                                                        731        459        691
                                                              --------   --------   --------
TOTAL
Beginning of year                                                8,031     21,405      4,382
Sales and transfers of oil and gas produced, net of
  production costs                                              (2,825)    (3,645)    (2,238)
Net changes in prices and production costs                       9,782    (23,584)     7,226
Changes in estimated future development costs                     (589)       217       (119)
Extensions, discoveries, additions and improved recovery,
  less related costs                                             1,625      1,068      3,721
Development costs incurred during the period                       698        689        261
Revisions of previous quantity estimates                          (338)      (416)       (51)
Purchases of minerals in place                                     652        798     17,376
Sales of minerals in place                                        (178)      (260)        (1)
Accretion of discount                                            1,155      3,315        636
Net change in income taxes                                      (3,485)     8,228     (9,757)
Other                                                             (418)       216        (31)
                                                              --------   --------   --------
End of year                                                   $ 14,110   $  8,031   $ 21,405
                                                              --------   --------   --------

110

ANADARKO PETROLEUM CORPORATION
SUPPLEMENTAL QUARTERLY INFORMATION
(UNAUDITED)

QUARTERLY FINANCIAL DATA

The following table shows summary quarterly financial data for 2002 and 2001. Certain amounts for prior periods have been reclassified to conform to the current presentation. See Note 1.

                                                                           FIRST       SECOND        THIRD          FOURTH
                                                                          QUARTER      QUARTER      QUARTER         QUARTER
MILLIONS EXCEPT PER SHARE AMOUNTS                                         -------      -------      -------         -------
2002
Revenues                                                                  $  790       $1,002       $  951          $1,117
Operating income, pretax                                                     204          364          363             494
Net income before cumulative effect of change in accounting
  principle                                                               $   89       $  241       $  190          $  311
Net income available to common stockholders before
  cumulative effect of change in accounting principle                     $   88       $  239       $  189          $  309
Net income available to common stockholders                               $   88       $  239       $  189          $  309
EPS - before cumulative effect of change in accounting
  principle - basic                                                       $ 0.35       $ 0.96       $ 0.76          $ 1.25
EPS - before cumulative effect of change in accounting
  principle - diluted                                                     $ 0.34       $ 0.93       $ 0.74          $ 1.21
EPS - basic                                                               $ 0.35       $ 0.96       $ 0.76          $ 1.25
EPS - diluted                                                             $ 0.34       $ 0.93       $ 0.74          $ 1.21
Average number common shares outstanding - basic                             248          248          249             249
Average number common shares outstanding - diluted                           263          259          258             258

2001
Revenues                                                                  $1,588       $1,322       $1,010          $  798
Operating income (loss), pretax(1)                                           979          620       (2,169)(2)         207
Net income (loss) before cumulative effect of change in
  accounting principle(1)                                                 $  664       $  402       $(1,351)(2)     $  109
Net income (loss) available to common stockholders before
  cumulative effect of change in accounting principle(1)                  $  661       $  401       $(1,353)(2)     $  108
Net income (loss) available to common stockholders(1)                     $  656       $  401       $(1,353)(2)     $  108
EPS - before cumulative effect of change in accounting
  principle - basic                                                       $ 2.64       $ 1.60       $(5.41)(2)      $ 0.43
EPS - before cumulative effect of change in accounting
  principle - diluted                                                     $ 2.52       $ 1.50       $(5.41)(2)      $ 0.41
EPS - basic                                                               $ 2.62       $ 1.60       $(5.41)(2)      $ 0.43
EPS - diluted                                                             $ 2.50       $ 1.50       $(5.41)(2)      $ 0.41
Average number common shares outstanding - basic                             250          251          250             249
Average number common shares outstanding - diluted                           263          268          250             266


(1) In January 2002, the Company discontinued the amortization of goodwill in accordance with Statement of Financial Accounting Standards No. 142, "Goodwill and Other Intangible Assets." Goodwill amortization expensed in the first, second, third and fourth quarters of 2001 was $17 million, $19 million, $21 million and $16 million, respectively, both before and after taxes. See Note 3.

(2) Anadarko's operating loss for the third quarter 2001 includes a charge of $2.5 billion ($1.6 billion after taxes) for impairments of the carrying value of proved oil and gas properties primarily in the United States, Canada and Argentina as a result of low oil and gas prices at the end of the quarter.

111

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

See Anadarko Board of Directors, Guidelines and Codes and Section 16(a) Beneficial Ownership Reporting Compliance in the Anadarko Petroleum Corporation Proxy Statement, dated March 24, 2003 (Proxy Statement), which is incorporated herein by reference.

See list of Executive Officers of the Registrant appearing under Item 4 of this Form 10-K.

ITEM 11. EXECUTIVE COMPENSATION

See Board of Directors and Executive Compensation in the Proxy Statement, which is incorporated herein by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

See Stock Ownership in the Proxy Statement, which is incorporated herein by reference.

See Equity Compensation Plan Table appearing under Item 5 of this Form 10-K.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

See Board of Directors and Transactions with Management in the Proxy Statement, which is incorporated herein by reference.

ITEM 14. CONTROLS AND PROCEDURES

Anadarko's Chief Executive Officer and Chief Financial Officer (Certifying Officers) performed an evaluation of the Company's disclosure controls and procedures within 90 days of the filing of this Form 10-K. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by an issuer in the reports that it files or submits under the Exchange Act is accumulated and communicated to the issuer's management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
Based on this evaluation, the Certifying Officers have concluded that the Company's disclosure controls and procedures are effective. In addition, there have been no significant changes in the internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation.

112

PART IV

ITEM 15. EXHIBITS AND REPORTS ON FORM 8-K

(a) The following documents are filed as a part of this report or incorporated by reference:

(1) The consolidated financial statements of Anadarko Petroleum Corporation are listed on the Index to this report, page 53.

(2) Exhibits not incorporated by reference to a prior filing are designated by an asterisk (*) and are filed herewith; all exhibits not so designated are incorporated herein by reference to a prior filing as indicated.

     EXHIBIT                                                          ORIGINALLY FILED            FILE
     NUMBER                        DESCRIPTION                           AS EXHIBIT              NUMBER
     -------        -----------------------------------------  -------------------------------  ---------
    2(a)            Agreement and Plan of Merger dated as of   2.1 to Form 8-K dated April 2,      1-8968
                    April 2, 2000, among Anadarko, Subcorp     2000
                    and Anadarko Holding Company
    3(a)            Restated Certificate of Incorporation of   4(a) to Form S-3 dated May 9,    333-60496
                    Anadarko Petroleum Corporation, dated      2001
                    August 28, 1986
     (b)            By-laws of Anadarko Petroleum              3(e) to Form 10-Q for quarter       1-8968
                    Corporation,                               ended September 30, 2000
                    as amended
     (c)            Certificate of Amendment of Anadarko's     4.1 to Form 8-K dated July 28,      1-8968
                    Restated Certificate of Incorporation      2000
    4(a)            Certificate of Designation of 5.46%        4(a) to Form 8-K dated May 6,       1-8968
                    Cumulative Preferred Stock, Series B       1998
     (b)            Rights Agreement, dated as of October 29,  4.1 to Form 8-A dated October       1-8968
                    1998, between Anadarko Petroleum           30, 1998
                    Corporation and The Chase Manhattan Bank
     (c)            Amendment No. 1 to Rights Agreement,       2.4 to Form 8-K dated April 2,      1-8968
                    dated as of April 2, 2000 between          2000
                    Anadarko and
                    the Rights Agent
DIRECTOR AND EXECUTIVE COMPENSATION PLANS AND ARRANGEMENTS
   10(b) (i)        Anadarko Petroleum Corporation 1988 Stock  19(b) to Form 10-Q for quarter      1-8968
                    Option Plan for Non-Employee Directors     ended September 30, 1988
         (ii)       Anadarko Petroleum Corporation Amended     99  --  Attachment A to Form        1-8968
                    and Restated 1988 Stock Option Plan for    10-K for year ended December
                    Non-Employee Directors                     31, 1993
         (iii)      Amendment to Anadarko Petroleum            10(b)(vii) to Form 10-K for         1-8968
                    Corporation 1988 Stock Option Plan for     year ended December 31, 1997
                    Non-Employee Directors
         (iv)       Second Amendment to Anadarko Petroleum     10(b)(viii) to Form 10-K for        1-8968
                    Corporation 1988 Stock Option Plan for     year ended December 31, 1997
                    Non-Employee Directors
         (v)        1998 Director Stock Plan of Anadarko       99  --  Attachment A to Form        1-8968
                    Petroleum Corporation, effective January   10-K for year ended December
                    30, 1998                                   31, 1997

113

  EXHIBIT                                                          ORIGINALLY FILED            FILE
  NUMBER                        DESCRIPTION                           AS EXHIBIT              NUMBER
  -------        -----------------------------------------  -------------------------------  ---------
10(b) (vi)       Anadarko Petroleum Corporation and         19(c)(ix) to Form 10-Q for          1-8968
                 Participating Affiliates and Subsidiaries  quarter ended September 30,
                 Annual Override Pool Bonus Plan, as        1986
                 amended October 6, 1986
      (vii)      Second Amendment to Anadarko Petroleum     10(b)(ii) to Form 10-K for year     1-8968
                 Corporation and Participating Affiliates   ended December 31, 1987
                 and Subsidiaries Annual Override Pool
                 Bonus Plan
      (viii)     Restatement of the Anadarko Petroleum      Post Effective Amendment No. 1    33-22134
                 Corporation 1987 Stock Option Plan (and    to Forms S-8 and S-3, Anadarko
                 Related Agreement)                         Petroleum Corporation 1987
                                                            Stock Option Plan
      (ix)       First Amendment to Restatement of the      10(b)(xii) to Form 10-K for         1-8968
                 Anadarko Petroleum Corporation 1987 Stock  year ended December 31, 1997
                 Option Plan
      (x)        1993 Stock Incentive Plan                  10(b)(xii) to Form 10-K for         1-8968
                                                            year ended December 31, 1993
      (xi)       First Amendment to Anadarko Petroleum      99  --  Attachment A to Form        1-8968
                 Corporation 1993 Stock Incentive Plans     10-K for year ended December
                                                            31, 1996
      (xii)      Second Amendment to Anadarko Petroleum     10(b)(xv) to Form 10-K for year     1-8968
                 Corporation 1993 Stock Incentive Plans     ended December 31, 1997
      (xiii)     Anadarko Petroleum Corporation 1993 Stock  10(a) to Form 10-Q for quarter      1-8968
                 Incentive Plan Stock Option Agreement      ended March 31, 1996
      (xiv)      Form of Anadarko Petroleum Corporation     10(b)(xvii) to Form 10-K for        1-8968
                 1993 Stock Incentive Plan Stock Option     year ended December 31, 1997
                 Agreement
      (xv)       Form of Anadarko Petroleum Corporation     10(b)(xviii) to Form 10-K for       1-8968
                 1993 Stock Incentive Plan Restricted       year ended December 31, 1997
                 Stock
                 Agreement
      (xvi)      Anadarko Petroleum Corporation 1999 Stock  99  --  Attachment A to Form        1-8968
                 Incentive Plan                             10-K for year ended December
                                                            31, 1998
      (xvii)     Amendment to 1999 Stock Incentive Plan,    10(b)(xxii) to Form 10-K for        1-8968
                 as of July 1, 2000                         year ended December 31, 2000
      (xviii)    Form of Anadarko Petroleum Corporation     10(b)(xxiii) to Form 10-K for       1-8968
                 1999 Stock Incentive Plan Stock Option     year ended December 31, 1999
                 Agreement
      (xix)      Form of Anadarko Petroleum Corporation     10(b)(xxiv) to Form 10-K for        1-8968
                 1999 Stock Incentive Plan Restricted       year ended December 31, 1999
                 Stock Agreement
      (xx)       Annual Incentive Bonus Plan                10(b)(xiii) to Form 10-K for        1-8968
                                                            year ended December 31, 1993

114

  EXHIBIT                                                          ORIGINALLY FILED            FILE
  NUMBER                        DESCRIPTION                           AS EXHIBIT              NUMBER
  -------        -----------------------------------------  -------------------------------  ---------
10(b) (xxi)      First Amendment to Anadarko Petroleum      99  --  Attachment B to Form        1-8968
                 Corporation Annual Incentive Bonus Plan    10-K for year ended December
                                                            31, 1998
      *(xxii)    Second Amendment to Anadarko Petroleum
                 Corporation Annual Incentive Bonus Plan
      (xxiii)    Key Employee Change of Control Contract    10(b)(xxii) to Form 10-K for        1-8968
                                                            year ended December 31, 1997
      (xxiv)     First Amendment to Anadarko Petroleum      10(b) to Form 10-Q for quarter      1-8968
                 Corporation Key Employee Change of         ended September 30, 2000
                 Control Contract
      (xxv)      Anadarko Retirement Restoration Plan,      10(b)(xix) to Form 10-K for         1-8968
                 effective January 1, 1995                  year ended December 31, 1995
      (xxvi)     Anadarko Savings Restoration Plan,         10(b)(xx) to Form 10-K for year     1-8968
                 effective January 1, 1995                  ended December 31, 1995
      (xxvii)    Amendment to Amended and Restated          10(b)(xxxi) to Form 10-K for        1-8968
                 Anadarko Savings Restoration Plan          year ended December 31, 1997
      (xxviii)   Plan Agreement for the Management Life     10(b)(xxi) to Form 10-K for         1-8968
                 Insurance Plan between Anadarko Petroleum  year ended December 31, 1995
                 Corporation and each Eligible Employee,
                 effective July 1, 1995
      (xxix)     Anadarko Petroleum Corporation Estate      10(b)(xxxiv) to Form 10-K for       1-8968
                 Enhancement Program                        year ended December 31, 1998
      (xxx)      Estate Enhancement Program Agreement       10(b)(xxxv) to Form 10-K for        1-8968
                 between Anadarko Petroleum Corporation     year ended December 31, 1998
                 and Eligible Executives
      (xxxi)     Estate Enhancement Program Agreements      10(b)(xxxxii) to Form 10-K for      1-8968
                 effective November 29, 2000                year ended December 31, 2000
      *(xxxii)   Anadarko Petroleum Corporation Management
                 Life Insurance Plan
      *(xxxiii)  Management Disability Plan -- Plan
                 Summary
  *12            Computation of Ratios of Earnings to
                 Fixed Charges and Earnings to Combined
                 Fixed Charges and Preferred Stock
                 Dividends
  *13            Portions of the Anadarko Petroleum
                 Corporation 2002 Annual Report to
                 Stockholders
  *21            List of Significant Subsidiaries
*23.1            Consent of KPMG LLP
*23.2            Consent of Ryder Scott Company
  *24            Power of Attorney

115

  EXHIBIT                                                          ORIGINALLY FILED            FILE
  NUMBER                        DESCRIPTION                           AS EXHIBIT              NUMBER
  -------        -----------------------------------------  -------------------------------  ---------
*99.1            Anadarko Petroleum Corporation Proxy       Filed on March 13, 2003
                 Statement, dated March 24, 2003
*99.2            Certification of Chief Executive Officer
                 and Chief Financial Officer
*99.3            Ryder Scott Company Report


The total amount of securities of the registrant authorized under any instrument with respect to long-term debt not filed as an exhibit does not exceed 10% of the total assets of the registrant and its subsidiaries on a consolidated basis. The registrant agrees, upon request of the Securities and Exchange Commission, to furnish copies of any or all of such instruments to the Securities and Exchange Commission.

(b) REPORTS ON FORM 8-K

A report on Form 8-K dated October 1, 2002 was filed in which the earliest event reported was September 29, 2002. This event was reported under Item 5 "Other Events" and Item 7c. "Exhibits."
A report on Form 8-K dated November 1, 2002 was filed in which the earliest event reported was October 31, 2002. This event was reported under Item 5 "Other Events" and Item 7c. "Exhibits."
A report on Form 8-K dated December 6, 2002 was filed in which the earliest event reported was December 6, 2002. This event was reported under Item 5 "Other Events" and Item 7c. "Exhibits."
A report on Form 8-K dated December 13, 2002 was filed in which the earliest event reported was December 13, 2002. This event was reported under Item 5 "Other Events and Regulation FD Disclosure" and Item 7c. "Exhibits." A report on Form 8-K dated December 20, 2002 was filed in which the earliest event reported was December 20, 2002. This event was reported under Item 5 "Other Events and Regulation FD Disclosure" and Item 7c. "Exhibits."

116

SIGNATURES

PURSUANT TO THE REQUIREMENTS OF SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934, THE REGISTRANT HAS DULY CAUSED THIS REPORT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO DULY AUTHORIZED.

ANADARKO PETROLEUM CORPORATION

March 13, 2003                          By:       /s/ MICHAEL E. ROSE
                                           -------------------------------------
                                            (Michael E. Rose, Executive Vice
                                         President and Chief Financial Officer)

PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THIS REPORT HAS BEEN SIGNED BELOW BY THE FOLLOWING PERSONS ON BEHALF OF THE REGISTRANT AND IN THE CAPACITIES INDICATED ON MARCH 13, 2003.

                      NAME AND SIGNATURE                                      TITLE
                      ------------------                                      -----

(i)    Principal executive officer:*

                        JOHN N. SEITZ                    President and Chief Executive Officer
       ------------------------------------------------
                       (John N. Seitz)

(ii)   Principal financial officer:*

                       MICHAEL E. ROSE                   Executive Vice President and Chief Financial
       ------------------------------------------------  Officer
                      (Michael E. Rose)

(iii)  Principal accounting officer:*

                       DIANE L. DICKEY                   Vice President and Controller
       ------------------------------------------------
                      (Diane L. Dickey)

(iv)   Directors:*

                    ROBERT J. ALLISON, JR.
                       CONRAD P. ALBERT
                         LARRY BARCUS
                         RONALD BROWN
                        JAMES L. BRYAN
                     JOHN R. BUTLER, JR.
                     PRESTON M. GEREN III
                        JOHN R. GORDON
                 JOHN W. PODUSKA, SR., PH.D.
                        JOHN N. SEITZ

-----
* Signed on behalf of each of these persons and on his own behalf:

By                 /s/  MICHAEL E. ROSE
       ------------------------------------------------
             (Michael E. Rose, Attorney-in-Fact)

117

CERTIFICATIONS

I, John N. Seitz, certify that:

1. I have reviewed this annual report on Form 10-K of Anadarko Petroleum Corporation;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;

4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

(a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

(b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this annual report (the "Evaluation Date"); and

(c) presented in this annual report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):

(a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and

6. The registrant's other certifying officers and I have indicated in this annual report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Date: March 13, 2003

      /s/  JOHN N. SEITZ
--------------------------------------
President and Chief Executive Officer

118

CERTIFICATIONS

I, Michael E. Rose, certify that:

1. I have reviewed this annual report on Form 10-K of Anadarko Petroleum Corporation;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;

4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

(a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

(b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this annual report (the "Evaluation Date"); and

(c) presented in this annual report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):

(a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and

6. The registrant's other certifying officers and I have indicated in this annual report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Date: March 13, 2003

      /s/  MICHAEL E. ROSE
--------------------------------------
  Executive Vice President and Chief
          Financial Officer

119

EXHIBIT INDEX

    EXHIBIT
    NUMBER                                DESCRIPTION
    -------                               -----------
*10(b)(xxii)      Second Amendment to Anadarko Petroleum Corporation Annual
                  Incentive Bonus Plan
   *(xxxii)       Anadarko Petroleum Corporation Management Life Insurance
                  Plan
   *(xxxiii)      Management Disability Plan -- Plan Summary
*12               Computation of Ratios of Earnings to Fixed Charges and
                  Earnings to Combined Fixed Charges and Preferred Stock
                  Dividends
*13               Portions of the Anadarko Petroleum Corporation 2002 Annual
                  Report to Stockholders
*21               List of Significant Subsidiaries
*23.1             Consent of KPMG LLP
*23.2             Consent of Ryder Scott Company
*24               Power of Attorney
*99.2             Certification of Chief Executive Officer and Chief Financial
                  Officer
*99.3             Ryder Scott Company Report


EXHIBIT 10(b)(xxii)

SECOND AMENDMENT TO
ANADARKO PETROLEUM CORPORATION
ANNUAL INCENTIVE BONUS PLAN

WHEREAS, ANADARKO PETROLEUM CORPORATION (the "Company") has heretofore adopted the ANNUAL INCENTIVE BONUS PLAN which was amended on January 1, 1995 (the "Plan"); and

WHEREAS, the Company desires to further amend the Plan in the manner and to the extent herein provided.

: NOW, THEREFORE, the Plan shall be amended, effective as of January 1, 1999, as follows:

1. The amount of "$1.5 million" in the fourth sentence of Section 4 shall be replaced with the amount of "$3 million".

2. Except as amended hereby, the Plan shall continue in full force and effect. .

IN WITNESS WHEREOF, the parties hereto have caused these presents to be executed this ____ day of January, 1999.

ANADARKO PETROLEUM CORPORATION

ATTEST:

_________________________     By:____________________________________
                                    Charles G. Manley
                                    Senior Vice President, Administration


EXHIBIT 10(b)(xxxii)

ANADARKO PETROLEUM CORPORATION
MANAGEMENT LIFE INSURANCE PLAN

(Restated November 1, 2002)

I.

ESTABLISHMENT OF THE PLAN

1.01 PURPOSE. Anadarko Petroleum Corporation (the "Company") hereby restates, effective November 1, 2002, the Anadarko Petroleum Corporation Management Life Insurance Plan (the "Plan") for the purpose of providing death benefits payable to the designated beneficiary or beneficiaries of selected employees and retirees of the Company in the event of the death of an employee or retiree. The Company intends that the Plan shall at all times be maintained on an unfunded basis for federal income tax purposes under the Internal Revenue Code of 1986, as amended (the "Code"), and administered as a "top hat" plan exempt from the substantive requirements of the Employee Retirement Income Security Act of 1974, as amended ("ERISA").

II.

DEFINITIONS

2.01 DEFINITIONS. Where the following words and phrases appear in the Plan, they shall have the respective meanings set forth below, unless their context clearly indicates to the contrary.

(1) ADMINISTRATOR: The Executive Vice President, Administration of the Company.

(2) BASE ANNUAL SALARY: The base annual compensation, excluding bonuses, commissions, overtime, relocation expenses, incentive payments, non-monetary awards, directors fees and other fees, paid to the Employee for employment services rendered to the Company, before reduction for compensation deferred pursuant to all qualified, non-qualified and Code
Section 125 plans of the Company.

(3) BENEFICIARY: The individual or entity designated by a Participant to receive the death benefit payable under the Plan upon the death of such Participant.

(4) BENEFIT SALARY: Benefit Salary is a Participant's base annual salary (if in $1,000 increments) or his base annual salary rounded up to the next $1,000.


(5) CHANGE OF CONTROL: A Change of Control will have the same meaning as such term is defined in either the Company's (i) Key Employee Change of Control Contract, or (ii) Change of Control Severance Pay Plan. The applicable definition of Change of Control will be based on the plan that the terminating Participant participates in, and if the Participant participates in both plans, the definition that is most favorable to the Participant.

(6) COMPANY: Anadarko Petroleum Corporation and any participating subsidiaries.

(7) DISABLED PARTICIPANT: A Participant who is receiving long term disability benefits under the Anadarko Petroleum Corporation Comprehensive Welfare Benefits Plan.

(8) EMPLOYEE: A person who is working for the Company and is classified as an employee of the Company.

(9) ERISA: The Employee Retirement Income Security Act of 1974, as amended.

(10) PARTICIPANT: Any Employee or Retiree of the Company who is designated a Participant of the Plan by the Administrator.

(11) PLAN: The Anadarko Petroleum Corporation Management Life Insurance Plan.

(12) PLAN YEAR: Each twelve consecutive month period ending on December 31.

(13) RETIREE: A former employee, who at the time of his separation of employment from the Company, is a Participant in the Plan and who is at least 55 years of age with at least 10 years of service and who is eligible to participate in the Company's retiree medical and dental plans.

2.02 NUMBER AND GENDER. Wherever appropriate herein, words used in the singular shall be considered to include the plural and the plural to include the singular. The masculine gender, where appearing in this Plan, shall be deemed to include the feminine gender.

-2-

III.

BENEFITS

3.01 BENEFITS. Benefits under the Plan shall be contingent on the continued employment, disability, or retirement of the Participant. In the event the employment of the Participant by the Company is terminated for any reason other than retirement, disability, or due to a Change of Control, then the Plan shall have no further obligation to the Participant.

3.02 DISABILITY BENEFITS. A Disabled Participant will be treated as if he or she is actively employed by the Company for purposes of determining the amount of benefits to which the Disabled Participant is entitled under the Plan. If a Disabled Participant is no longer receiving long term disability benefits from the Company, then his or her status under the Plan will be determined based on the nature of the Participant's employment status with the Company immediately thereafter.

3.03 CHANGE OF CONTROL BENEFITS. In the event the employment of the Participant by the Company is terminated due to a Change of Control and the Participant receives a benefit under a Change of Control plan of the Company, then the Participant will be treated as if he or she is a Retiree for purposes of determining the amount of benefits to which the Participant is entitled under the Plan.

3.04 AMOUNT OF BENEFITS. In the event of the death of a Participant while employed by the Company, the Company shall thereafter pay a lump sum cash payment (the "Benefit Payment") equal to four (4) times the Participant's Benefit Salary less two (2) times Benefit Salary or the maximum benefit under the Company's Basic Life Insurance Plan in effect at the time of death, whichever is less. The payment will be made as soon as administratively feasible following the date of his or her death, to the Participant's designated Beneficiary, in accordance with the last such designation received by the Company from the Participant prior to his or her death. In the event of the death of a Participant who is a Retiree, the Company shall thereafter pay a lump sum cash payment (the "Benefit Payment") equal to one (1) times the Retiree's Benefit Salary in effect at the time of his or her retirement as soon as administratively feasible following the date of his or her death, to the Retiree's designated Beneficiary, in accordance with the last such designation received by the Company from the Retiree prior to his or her death.

In addition, the Company shall pay to the Beneficiary an additional amount (the "Gross-Up Payment") such that the net amount retained by the Beneficiary from both the Gross-Up Payment and the Benefit Payment combined, after deduction of any federal income, federal employment, and state and local income tax withholding from the Benefit Payment and the Gross-Up Payment, shall be equal to the Benefit Payment amount.

-3-

For purposes of determining the amount of the Gross-Up Payment, the rate of federal income tax withholding shall be deemed to be the highest marginal rate of federal income taxation in effect in the calendar year in which the Benefit Payment and Gross-Up Payment are made. The rate of federal employment tax withholding shall be deemed to be the highest rate of Medicare taxation in effect in the calendar year in which the Benefit Payment and Gross-Up Payment are made. The rate of state and local income tax withholding, if applicable, shall be deemed to be the highest marginal rate of state and local income taxation, in the state and locality of the Participant's residence on the date of death, in effect in the calendar year in which the Benefit Payment and Gross-Up Payment are made.

3.05 TIME FOR PAYMENT. The benefits which are payable hereunder with respect to a Participant shall be paid as soon as administratively feasible after (i) the Administrator has obtained all information, including a properly notarized certificate of death, from the Participant's Beneficiary necessary to establish that a death benefit with respect to such Participant is payable to such Beneficiary under the Plan, and (ii) the Administrator has directed the payment of such death benefit.

At the discretion of the Company, a Retiree will receive the actuarial present value of the Benefit Payment and Gross-up Payment at retirement based on the interest rate and mortality assumptions used for determining lump sum payments under the Anadarko Retirement Plan in effect at the time of retirement.

3.06 BENEFICIARIES. Each Participant shall have the right to designate the Beneficiary or Beneficiaries to receive payment of any death benefit payable under the Plan in the event of his death. A Participant's Beneficiary designation in effect for the Company's Basic Life Insurance Plan will determine the Beneficiary or Beneficiaries under this Plan, unless otherwise designated by the Participant. Each such designation shall be made by executing the appropriate form prescribed by the Administrator and filing same with the Administrator. Any such designation may be changed at any time by execution of a new Beneficiary designation by the Participant. If no Beneficiary designation is on file with the Administrator at the time of the death of a Participant or such Beneficiary designation is not effective for any reason as determined by the Administrator, the Beneficiary or Beneficiaries to receive the death benefit payable with respect to such Participant under the Plan shall be as follows in the order named:

(1) If a Participant leaves a surviving spouse, the death benefit payable under the Plan with respect to such Participant shall be paid to such surviving spouse;

(2) If a Participant leaves no surviving spouse, the death benefit payable with respect to such Participant under the Plan shall be paid to such Participant's executor or administrator or to his heirs-at-law if there is no administrator of such Participant's estate.

-4-

3.07 DIVORCE OF PARTICIPANT. In the event a Participant receives a final divorce decree order, and if the Participant's current Beneficiary designation reflects the former spouse as a Beneficiary or contingent Beneficiary, then the Plan will deem any such designation of the former spouse null and void as of the date of the final divorce decree unless such decree specifies that the former spouse is required to remain as a Beneficiary. A former spouse may be designated as a Beneficiary, provided the designation is executed after the date of the final divorce decree and there is nothing to the contrary provided in the final divorce decree.

IV.

ADMINISTRATION OF THE PLAN

4.01 ADMINISTRATOR. The Plan shall be administered on behalf of the Company by the Administrator. For purposes of ERISA, the Administrator shall be the Plan "administrator" and shall be the "named fiduciary" with respect to the general administration of the Plan.

4.02 ADMINISTRATOR'S POWERS AND DUTIES. The Administrator shall have all powers necessary or proper to administer the Plan and to discharge its duties under the Plan, including, but not limited to, the following powers:

(a) To make and enforce such rules and regulations as it may deem necessary or proper for the orderly and efficient administration of the Plan;

(b) To interpret the Plan, its interpretation thereof in good faith to be final and conclusive on all persons claiming benefits under the Plan;

(c) To determine who is eligible to participate in the Plan;

(d) To determine Participants' rights and the amounts of Plan benefits and to authorize the payment of benefits under the Plan;

(e) To prepare and distribute information explaining the Plan;

(f) To appoint or employ persons to assist in the administration of the Plan; and

(g) To obtain such information as is necessary for the proper administration of the Plan.

4.03 EXPENSES. The expenses incident to the operation of the Plan shall be paid by the Company.

-5-

4.04 BENEFIT CLAIMS PROCEDURES. If a Plan benefit claim is denied in whole or in part with respect to a Participant, the Participant or his Beneficiary shall receive not later than 90 days after receipt of the claim, a written notice which:

(a) states the specific reason or reasons for the denial;

(b) provides specific references to pertinent Plan provisions on which the denial is based;

(c) provides a description of any additional material or information necessary for the Participant, his Beneficiary or representative to perfect the claim and an explanation of why such material or information is necessary; and

(d) explains the Plan's claim review procedure as contained herein and the time limits applicable to such procedures, including a statement of the right to bring a civil action under Section 502(a) of ERISA following an adverse decision upon review.

In the event the Participant or his Beneficiary desires to have such denial reviewed, he must, within sixty days following receipt of the notice of such denial, submit a written request for review by the Administrator of its initial decision. In connection with the request for review of the denial, the Participant or his Beneficiary shall have the following rights:

(a) the opportunity to submit written documents, comments, records or other relevant information;

(b) the right to have all materials relating to the claim that have been submitted by the Participant or his Beneficiary in connection with the original claim considered on review without regard to whether they were considered in the initial benefit determination; and

(c) the right of reasonable access to and copies of all relevant documents, records or other information free of charge upon request.

Within sixty days following such request for review the Administrator shall render its final decision in writing to the Participant or his Beneficiary and the notice of such final decision if it is adverse upon review will:

(a) state the specific reason or reasons for the adverse decision;

-6-

(b) provide specific reference to pertinent Plan provisions on which the adverse decision was based;

(c) state that the Participant or his Beneficiary is entitled to receive upon request and free of charge copies of all documents, records and other information relevant to his claim for benefits and the denial on review; and

(d) describe the Participant's or his Beneficiary's right to bring an action under Section 502(a) of ERISA.

If special circumstances require an extension of such sixty-day period, the Administrator's decision shall be rendered as soon as possible, but not later than 120 days after receipt of the request for review. If an extension of time for review is required, written notice of the extension shall be furnished to the Participant or his Beneficiary prior to the commencement of the extension period.

4.05 LIABILITY OF ADMINISTRATOR. The Company agrees to indemnify the Administrator and any agent of the Administrator against all liabilities, damages, costs and expenses (including attorneys' fees and amounts paid in settlement of any claims approved by the Company) occasioned by any act or omission to act in connection with the Plan if such act or omission was in good faith.

4.06 INSTRUCTIONS OF ADMINISTRATOR. Any instructions of the Administrator shall be evidenced in writing and signed by the Administrator or by an agent of the Administrator, who has been authorized by the Administrator to give such instructions.

V.

AMENDMENTS AND TERMINATION

5.01 AMENDMENTS. The Company reserves the right to, from time to time, amend this Plan. The Company may make any amendment it determines to be necessary or desirable, with or without retroactive effect.

5.02 RIGHT TO TERMINATE. The Company hopes and expects to continue this Plan for the Participants indefinitely. The Company reserves the right at will and without prior notice to terminate or partially terminate the Plan or any portion thereof. No such termination shall adversely affect the rights of Beneficiaries of deceased Participants with respect to benefits which became payable as a result of the deaths prior to the date of such termination of the Plan. If the Plan is terminated or partially terminated by the Company, each Retiree who is then still living and who has not previously received a Retiree death benefit under this Plan, will be entitled to the actuarial present value of his or her death benefit under the Plan, calculated under the same terms and conditions that a lump sum is determined under the Anadarko Retirement Plan.

-7-

VI.

GENERAL PROVISIONS

6.01 RIGHT TO BENEFITS. No Participant, or Beneficiary through such Participant, shall have any right to, or interest in, any benefits provided under this Plan, except as provided under this Plan.

6.02 NONALIENATION OF BENEFITS. No interest in or benefit payable under the Plan shall be subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance or charge.

6.03 UNFUNDED STATUS. The Plan shall constitute an unfunded, unsecured obligation of the Company to make death benefit payments in accordance with the provisions of the Plan. Neither the establishment of the Plan nor the maintenance on the books of the Company of accounts for Participants shall be deemed to create a trust and no Participant or Beneficiary of such Participant shall have any claim against the Company except with respect to the payment of death benefit payments in accordance with the provisions of the Plan. In the event the Company purchases an insurance policy or policies, insuring the life of a Participant to allow the Company to recover, in whole, or in part, the cost of providing the Benefit Payment, neither the Participant nor any of his or her Beneficiaries shall have or acquire any right whatsoever therein or in the proceeds therefrom. The Company shall be the sole owner of any such policy or policies, and, as such, shall possess and may exercise all incidents of ownership. No such policy, policies or other property shall be held in any trust for the Participant or any other person as collateral security for any obligation of the Company hereunder. In order for a person to become a Participant or continue to be a Participant in the Plan, the Company reserves the right to require such person or Participant to carry out whatever functions are required of such person or Participant in order for the Company to secure an insurance policy or policies or other property to be used to offset the cost of providing the benefits under the Plan.

6.04 CONSTRUCTION. Except to the extent that ERISA applies to this Plan, the Plan shall be construed, enforced and administered according to the laws of the State of Texas. The Company intends that the terms of the Plan, including those relating to coverage and benefits, are legally enforceable. In case any provision of the Plan is held to be illegal or invalid for any reason, it shall not affect the remaining provisions of the Plan, but the Plan shall be construed and enforced as if such illegal or invalid provision had not been included therein.

6.05 EXCLUSIVE BENEFIT. The Plan is to be maintained for the exclusive benefit of the Participants.

-8-

IN WITNESS WHEREOF, the Company has caused this Plan to be adopted and to be signed by its duly authorized officers.

DATED this day of , .


Richard A. Lewis
Vice President, Human Resources

ATTEST:

-9-

EXHIBIT 10(b)(xxxiii)

MANAGEMENT DISABILITY PLAN
PLAN SUMMARY

INTRODUCTION        As a member of Anadarko's key management team, you are
                    eligible to participate in the Management Disability Plan
                    (the "Plan"). The Plan is designed to replace up to 70% of
                    your base salary in the event you are unable to work due to
                    a serious injury or illness. Your coverage in this Plan
                    replaces your coverage in the Anadarko Petroleum Corporation
                    Disability Plan (the "Group LTD Plan") which provided a
                    benefit of up to 60% of your base salary. There is no cost
                    to you for coverage under the Plan and there are no
                    enrollment forms to complete.

DEFINITION          The Plan defines disability as a condition which prevents
OF DISABILITY       you from performing all of the material duties of your
                    occupation. The insurance carrier will make the final
                    determination as to whether you qualify for disability
                    benefits.

                    After receiving benefits for 24 months, your disability will
                    be reviewed. You will continue to receive benefits if you
                    are still unable to perform all of the material duties of
                    your occupation on a full-time basis and are earning at
                    least 20% less than before you became disabled.

DISABILITY          Your maximum monthly benefit under the Plan is 70% of your
BENEFIT             base monthly earnings in effect immediately prior to the
                    date your disability began. The maximum monthly benefit
                    payable under the Plan cannot exceed $35,000.

                    If you are partially disabled but able to work in your
                    regular occupation or another occupation, your benefit
                    calculation will consider other earnings you may be
                    receiving. During the first twelve months, your benefit will
                    be calculated by subtracting other earnings from your
                    pre-disability salary. After twelve months, other earnings
                    may result in a further reduction of your benefits.

                                       1

                    Your benefit is also subject to reduction by any disability
                    payments from Social Security, Workers' Compensation and
                    government disability or retirement plans.

WAITING             Benefits will begin after you have been disabled for 180
PERIOD              days. When you submit your claim for disability benefits,
                    you must provide proof that you are disabled and that you
                    are under the care of a physician.

PRE-EXISTING        A pre-existing condition is a sickness or injury for which
CONDITION           you have received medical treatment, consultation or
EXCLUSION           prescription medication in the six months prior to the
                    effective date of your coverage under the Plan.

                    If you have a qualifying pre-existing condition, your
                    benefits under the Plan may be reduced up to 10%.

                    Once you are able to go treatment free for 12 months, you
                    will be eligible for full benefits under the Plan. After you
                    have been covered under the Plan for 24 months, your
                    pre-existing condition will no longer be considered and you
                    will be eligible for full benefits under the Plan.

TAXATION            Benefit payments are fully taxable as ordinary income.
OF BENEFITS

MAXIMUM             If you become disabled prior to age 60, benefits will
BENEFIT             continue until age 65 as long as you continue to meet the
PERIOD              definition of disability. If you become disabled after
                    age 60, the maximum benefit period is shown on the following
                    page.

2

---------------------------------------------------
AGE AT DISABILITY          MAXIMUM BENEFIT PERIOD
---------------------------------------------------
       60                        60 Months
---------------------------------------------------
       61                        48 Months
---------------------------------------------------
       62                        42 Months
---------------------------------------------------
       63                        36 Months
---------------------------------------------------
       64                        30 Months
---------------------------------------------------
       65                        24 Months
---------------------------------------------------
       66                        21 Months
---------------------------------------------------
       67                        18 Months
---------------------------------------------------
       68                        15 Months
---------------------------------------------------
   69 and over                   12 Months
---------------------------------------------------

                    Benefits for disability due to mental illness will not
                    exceed a 24 month period regardless of age.

CESSATION           Your benefit payments will stop at the earliest of the
OF BENEFITS         following events:

                    - You are no longer disabled,
                    - The maximum benefit period has expired,
                    - Your death,
                    - Your current earnings exceed 80% of your pre-disability
                      earnings.

COVERAGE            Your coverage under the Plan will end upon your retirement
END DATE            or termination of employment with the Company, or if you are
                    no longer determined to be an eligible participant or the
                    Plan is discontinued.

                                       3

CONVERSION          You may convert your coverage under the Plan to an
                    individual policy if your employment is terminated or you
                    become ineligible to participate in the Plan.

OTHER               This information is a brief overview of the Plan. Additional
INFORMATION         information regarding the Plan is provided in the plan
                    document. If there is a conflict between the information
                    provided in the summary and the plan document, the plan
                    document will prevail.

                    The Company retains the right to terminate or amend the Plan
                    at any time.

4

EXHIBIT 12

ANADARKO PETROLEUM CORPORATION
CONSOLIDATED STATEMENT OF COMPUTATION OF RATIOS OF
EARNINGS TO FIXED CHARGES AND EARNINGS TO
COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

FIVE YEARS ENDED DECEMBER 31, 2002

                                             Years Ended December 31
                                    -------------------------------------------
millions except ratio amounts        2002      2001      2000     1999     1998
                                    ------    -----     ------    ----    -----
Gross Income (Loss)                 $1,410    $(298)    $1,519    $179    $  (7)
Rentals                                 14       14         16      11       12
                                    ------    -----     ------    ----    -----
Earnings (Loss)                      1,424     (284)     1,535     190        5
                                    ------    -----     ------    ----    -----
Gross Interest Expense                 358      301        193      96       82
Rentals                                 14       14         16      11       13
                                    ------    -----     ------    ----    -----
Fixed Charges                       $  372    $ 315     $  209    $107    $  95
                                    ------    -----     ------    ----    -----
Preferred Stock
 Dividends                               9       11         17      17       11
                                    ------    -----     ------    ----    -----
Combined Fixed Charges
 and Preferred Stock
 Dividends                          $  381    $ 326     $  226    $124    $ 106
                                    ------    -----     ------    ----    -----
Ratio of Earnings to
 Fixed Charges                        3.83      n/m       7.35    1.77     0.05
                                    ------    -----     ------    ----    -----
Ratio of Earnings to
 Combined Fixed Charges
 and Preferred Stock
 Dividends                            3.74      n/m       6.80    1.53     0.05
                                    ------    -----     ------    ----    -----

n/m - not meaningful

As a result of the Company's net loss in 2001, Anadarko's earnings did not cover fixed charges by $599 million and did not cover combined fixed charges and preferred stock dividends by $610 million. In 1998, Anadarko's earnings did not cover fixed charges by $90 million and did not cover combined fixed charges and preferred stock dividends by $101 million.

These ratios were computed by dividing earnings by either fixed charges or combined fixed charges and preferred stock dividends. For this purpose, earnings include income before income taxes and fixed charges. Fixed charges include interest and amortization of debt expenses and the estimated interest component of rentals. Preferred stock dividends are adjusted to reflect the amount of pretax earnings required for payment.


.

.
.

EXHIBIT 13

FIVE YEAR FINANCIAL HIGHLIGHTS*

---------------------------------------------------------------------------------------------------------
DOLLARS IN MILLIONS,                                      % change
EXCEPT PER SHARE AMOUNTS                        2002     2002-2001    2001      2000      1999     1998
------------------------                       -------   ---------   -------   -------   ------   -------
Revenues                                       $ 3,860      (18)     $ 4,718   $ 2,911   $  748   $   607
Operating Income (Loss)                          1,425      n/m         (363)    1,352      175        (8)
Net Income (Loss) Available to
  Common Stockholders before
  Change in Accounting Principle                   825      n/m         (183)      813       32       (49)
Net Income (Loss)                                  825      n/m         (188)      796       32       (49)
Net Cash Provided by Operating Activities      $ 2,196      (34)     $ 3,321   $ 1,536   $  318   $   240
Per Common Share:
  Net Income (Loss) -- Basic                   $  3.32      n/m      $ (0.75)  $  4.32   $ 0.25   $ (0.41)
  Net Income (Loss) -- Diluted                 $  3.21      n/m      $ (0.75)  $  4.16   $ 0.25   $ (0.41)
  Dividends                                    $ 0.325       44      $ 0.225   $  0.20   $ 0.20   $0.1875
Average Shares Outstanding -- Basic                248       (1)         250       184      125       120
Average Shares Outstanding -- Diluted              260        4          250       193      126       120
Capital Expenditures                           $ 2,388      (28)     $ 3,316   $ 1,708   $  680   $   917
---------------------------------------------------------------------------------------------------------
Total Debt                                     $ 5,471        8      $ 5,050   $ 3,984   $1,443   $ 1,425
Stockholders' Equity                             6,972       10        6,365     6,786    1,535     1,259
Total Assets                                   $18,248        9      $16,771   $16,590   $4,098   $ 3,633
---------------------------------------------------------------------------------------------------------
Annual Sales Volumes:
  Gas (Bcf)                                        642       (8)         695       385      170       177
  Oil and Condensate (MMBbls)                       75       10           68        36       15        11
  NGLs (MMBbls)                                     15       --           15        12        7         7
  Total Barrels of Oil Equivalent (MMBOE)          197       (1)         199       112       50        47
                                               -------      ---      -------   -------   ------   -------
Average Daily Sales Volumes:
  Gas (MMcf/d)                                   1,760       (8)       1,904     1,052      465       484
  Oil and Condensate (MBbls/d)                     205       10          186        98       40        30
  NGLs (MBbls/d)                                    41       (2)          42        33       18        18
  Total Barrels of Oil Equivalent (MBOE/d)         539       (1)         546       306      135       129
                                               -------      ---      -------   -------   ------   -------
Oil Reserves (MMBbls)                            1,131       --        1,132     1,046      573       494
Gas Reserves (Tcf)                                 7.2        3          7.0       6.1      2.5       2.6
Total Reserves (MMBOE)                           2,328        1        2,305     2,061      991       935
                                               -------      ---      -------   -------   ------   -------
Worldwide Finding Cost ($/BOE)**               $ 10.52       23      $  8.53   $  7.19   $ 4.87   $  3.13
Worldwide Reserve Replacement
  (% of Production)                                112%     (49)         221%    1,059%     213%      581%
Number of Employees                              3,800        9        3,500     3,500    1,400     1,500
---------------------------------------------------------------------------------------------------------

* Consolidated for Anadarko Petroleum Corporation and its subsidiaries. Certain amounts for prior years have been reclassified to conform to the current presentation.

** Worldwide finding costs are calculated by dividing worldwide costs incurred by the worldwide reserve additions, excluding sales in place.

Table of Measures
Bcf -- Billion cubic feet                                                       MMBOE -- Million barrels of oil equivalent
BOE -- Barrels of oil equivalent                                                MMcf/d -- Million cubic feet per day
MBbls/d -- Thousand barrels per day                                             n/m -- Not meaningful
MBOE/d -- Thousand barrels of oil equivalent per day                            Tcf -- Trillion cubic feet
MMBbls -- Million barrels

STOCKHOLDER INFORMATION

The common stock of Anadarko Petroleum Corporation is traded on the New York Stock Exchange. Average daily trading volume was 1,793,000 shares in 2002, 2,726,000 shares in 2001 and 1,618,000 shares in 2000. The ticker symbol for Anadarko is APC and the daily stock reports published in local newspapers carry trading summaries for the company under the headings Anadrk or Anadrkpete. The following shows information regarding the closing market price of and dividends paid on the company's common stock by quarter for 2002 and 2001.

                                                                     FIRST    SECOND     THIRD    FOURTH
                                                                    QUARTER   QUARTER   QUARTER   QUARTER
                                                                    -------   -------   -------   -------
2002
Market Price
  High                                                              $58.29    $58.01    $49.22    $49.92
  Low                                                               $46.85    $46.86    $38.00    $42.13
Dividends                                                           $0.075    $0.075    $0.075    $0.100

2001
Market Price
  High                                                              $72.99    $69.00    $59.75    $60.44
  Low                                                               $54.63    $53.40    $44.05    $47.45
Dividends                                                           $0.050    $0.050    $0.050    $0.075


EXHIBIT 21

LIST OF SIGNIFICANT SUBSIDIARIES

Anadarko E&P Company, LP
a Delaware limited partnership,

Anadarko Holding Company
a Utah corporation,

Anadarko Canada Energy Ltd.

an Alberta, Canada corporation,

Anadarko Canada Corporation
an Alberta, Canada corporation,

Anadarko Land Corp.
a Nebraska corporation,

Anadarko Algeria Company, LLC
a Delaware limited liability company,

Anadarko Energy Services Company
a Delaware corporation,

APC Venezuela, S.R.L.

a Venezuela limited liability company,

Bitter Creek Coal Company
a Utah corporation


EXHIBIT 23.1

INDEPENDENT AUDITORS' CONSENT

The Board of Directors
Anadarko Petroleum Corporation:

We consent to the incorporation by reference in the following registration statements of Anadarko Petroleum Corporation of our report dated January 31, 2003, with respect to the consolidated balance sheets of Anadarko Petroleum Corporation and subsidiaries as of December 31, 2002 and 2001, and the related consolidated statements of income, stockholders' equity, comprehensive income and cash flows for each of the years in the three-year period ended December 31, 2002, which report appears in the December 31, 2002 annual report on Form 10-K of Anadarko Petroleum Corporation:

(a) Forms S-8 and S-3, Anadarko Employee Savings Plan (No. 33-8643).

(b) Forms S-8 and S-3, Anadarko Petroleum Corporation 1987 Stock Option Plan (No. 33-22134).

(c) Forms S-8 and S-3, Anadarko Petroleum Corporation 1988 Stock Option Plan for Non-Employee Directors (No. 33-30384).

(d) Form S-8, Anadarko Petroleum Corporation 1993 Stock Incentive Plan (No. 33-54485).

(e) Form S-3, Anadarko Petroleum Corporation Dividend Reinvestment and Stock Purchase Plan (No. 333-65915, No. 333-88147 and No. 333-103102).

(f) Form S-8, Anadarko Petroleum Corporation 1998 Director Stock Incentive Plan (No. 333-78301).

(g) Form S-8, Anadarko Petroleum Corporation 1999 Stock Incentive Plan (No. 333-78303).

(h) Form S-3, Anadarko Petroleum Corporation Registration Statement for $650 million of Zero Yield Puttable Contingent Debt Securities (No. 333-60496).

(i) Form S-3, Anadarko Petroleum Corporation Registration Statement for $1 billion of Debt Securities, Preferred Stock, Depository Shares, Common Stock, Warrants, Purchase Contracts and Purchase Units (No. 333-86356).

Our report refers to changes in accounting for goodwill in 2002, derivative instruments in 2001, and foreign crude oil inventories in 2000.

/s/ KPMG LLP

Houston, Texas
March 13, 2003


EXHIBIT 23.2

EXPERT CONSENT

The Board of Directors
Anadarko Petroleum Corporation:

We consent to the inclusion in the Anadarko Petroleum Corporation annual report on Form 10-K for the year ended December 31, 2002 and the incorporation by reference in the following registration statements of Anadarko Petroleum Corporation of our report dated February 20, 2003, relating to the proved reserves status of the Marco Polo Discovery.

(a) Forms S-8 and S-3, Anadarko Employee Savings Plan (No. 33-8643).

(b) Forms S-8 and S-3, Anadarko Petroleum Corporation 1987 Stock Option Plan (No. 33-22134).

(c) Forms S-8 and S-3, Anadarko Petroleum Corporation 1988 Stock Option Plan for Non-Employee Directors (No. 33-30384).

(d) Form S-8, Anadarko Petroleum Corporation 1993 Stock Incentive Plan (No. 33-54485).

(e) Form S-3, Anadarko Petroleum Corporation Dividend Reinvestment and Stock Purchase Plan (No. 333-65915, No. 333-88147 and No. 333-103102).

(f) Form S-8, Anadarko Petroleum Corporation 1998 Director Stock Incentive Plan (No. 333-78301).

(g) Form S-8, Anadarko Petroleum Corporation 1999 Stock Incentive Plan (No. 333-78303).

(h) Form S-3, Anadarko Petroleum Corporation Registration Statement for $650 million of Zero Yield Puttable Contingent Debt Securities (No. 333-60496).

(i) Form S-3, Anadarko Petroleum Corporation Registration Statement for $1 billion of Debt Securities, Preferred Stock, Depository Shares, Common Stock, Warrants, Purchase Contracts and Purchase Units (No. 333-86356).

/s/ Ryder Scott Company, L.P.

Ryder Scott Company, L.P.
Houston, Texas
March 12, 2003


EXHIBIT 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS that the undersigned Director of ANADARKO PETROLEUM CORPORATION (the "Company"), a Delaware corporation, does hereby constitute and appoint MICHAEL E. ROSE, DIANE L. DICKEY, and SUZANNE SUTER, and each of them, his true and lawful attorney and agent to do any and all acts and things and execute any and all instruments which, with the advice of Counsel, said attorney and agent may deem necessary or advisable to enable the Company to comply with the Securities Act of 1934, as amended, and any rules, regulations and requirements of the Securities and Exchange Commission in connection with the filing under said Act of the Form 10-K Annual Report, including specifically, but without limitation thereof, to sign his name as a Director of the Company to the Form 10-K Annual Report filed with the Securities and Exchange Commission, and to any instrument or document filed as a part of, or in connection with, said Form 10-K Annual Report or amendment thereto; and the undersigned does hereby ratify and confirm all that said attorney and agent shall do or cause to be done by virtue thereof.

IN WITNESS WHEREOF, the undersigned have subscribed these presents this 13th day of March, 2003.

     [ROBERT J. ALLISON, JR.]                        [CONRAD P. ALBERT]
-----------------------------------        -------------------------------------
      Robert J. Allison, Jr.                          Conrad P. Albert


          [LARRY BARCUS]                               [RONALD BROWN]
-----------------------------------        -------------------------------------
           Larry Barcus                                 Ronald Brown


         [JAMES L. BRYAN]                          [JOHN R. BUTLER, JR.]
-----------------------------------        -------------------------------------
          James L. Bryan                            John R. Butler, Jr.


      [PRESTON M. GEREN III]                          [JOHN R. GORDON]
-----------------------------------        -------------------------------------
       Preston M. Geren III                            John R. Gordon


      [JOHN W. PODUSKA, SR.]                          [JOHN N. SEITZ]
-----------------------------------        -------------------------------------
       John W. Poduska, Sr.                            John N. Seitz


EXHIBIT 99.2

CERTIFICATION OF PERIODIC REPORT

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, John N. Seitz, President and Chief Executive Officer of Anadarko Petroleum Corporation (the "Company") and Michael E. Rose, Executive Vice President and Chief Financial Officer of the Company, certify that:

(1) the Annual Report on Form 10-K of the Company for the year ending December 31, 2002, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

March 13, 2003                          /s/ John N. Seitz
                                        -------------------
                                        John N. Seitz
                                        President and Chief Executive Officer



March 13, 2003                          /s/ Michael E. Rose
                                        -------------------
                                        Michael E. Rose
                                        Executive Vice President and Chief
                                        Financial Officer

This certification is made solely pursuant to 18 U.S.C. Section 1350, and not for any other purpose.


(RYDER SCOTT COMPANY PETROLEUM CONSULTANTS LETTERHEAD)

EXHIBIT 99.3

February 20, 2003

Anadarko Petroleum Corporation
1201 Lake Robbins Drive
The Woodlands, Texas 77380

RE: Proved Reserves Status Marco Polo Discovery

Gentlemen:

Ryder Scott was asked by Anadarko Petroleum Corporation to perform an updated review of your internal oil and gas reserves studies of their Marco Polo Field (Green Canyon Block 608) located in federal waters offshore Louisiana. Ryder Scott's initial review of Marco Polo occurred in August 2002.

SCOPE OF ASSIGNMENT

The question Anadarko has asked is whether the technical data that was gathered and then used for these reserve studies is sufficient in quality and quantity to support an SEC Proved reserves classification. Our opinion, based upon our reserve work in over 2,000 Gulf of Mexico (GOM) blocks, is that the logs, cores, seismic and MDT data conclusively indicate high quality reservoir rocks and that this aggregated and complementary data is sufficient to form a "compelling case" to classify Marco Polo as having Proved reserves. Below is an outline of our general methodology for reserve analysis in the Gulf Coast / Gulf of Mexico and how the data in Marco Polo Field compares to our GOM database.

MARCO POLO DISCOVERY
DEEPWATER GULF OF MEXICO
ANADARKO PETROLEUM CORPORATION

Ryder Scott Company review - August 2002

RYDER SCOTT COMPANY REVIEW TEAM:

Ronald Harrell - CEO

John Hodgin - Exec VP & Chief Geologist

Joe Magoto - Sr. VP Reservoir Engineering & Head of Management Advisory services

Ryder Scott Company review - February 12, 2003

RYDER SCOTT COMPANY REVIEW TEAM:

Joe Magoto - Sr. VP Reservoir Engineering & Head of Management Advisory services


Anadarko Petroleum Corporation
February 20, 2003

Page 2

GENERAL DISCUSSION ON RYDER SCOTT COMPANY RESERVES BOOKING

Key parameters used for typical Ryder Scott Company's (RSC) Gulf of Mexico (GOM) Analysis

1) Porosity from Logs

2) Porosity from side-wall Cores

3) Porosity & Permeability from whole Cores

4) Water saturation from open hole resistivity, Neutron-density, Gamma ray & SP logs

5) Hydrocarbon PVT fluid analysis obtained from multiple MDT's

6) Reservoir continuity from Log correlations

7) Reservoir continuity from MDT pressure analysis

8) Recovery Factors based on Aquifer size

9) Comparison of all above and to RSC data base in Miocene Gulf Coast sands

Ryder Scott Company approach to above parameters in approximate order of importance to the analysis.

1) Primary tool used - Log Analysis

a) Does the reservoir meet Porosity requirements for GOM based upon RSC data base

b) Does the reservoir meet Salt Water Saturation cutoff requirements for GOM

2) Core Analysis - Side-wall cores calibration of Porosity to Logs

3) Core Analysis - Whole core sometimes taken for increased certainty-more important in lower quality, higher shale content rock than present in subject field.

4) MDT tests - how we use the data:

a) Fluid samples for Hydrocarbon type and Oil quality including GOR.

b) Bottom hole pressure measurements

c) Multiple MDT pressures taken to establish pressure gradients with reservoir depths

1) Used between wells to establish reservoir continuity between updip and downdip wells

2) Used to estimate Oil/Water contacts in conjunction with Seismic data

5) DST or Conventional test through perforations after well completed-used in GOM primarily for Facility design or in shallow water (~ 50') where exploratory wells are saved to become producing wells. In that environment, tests have minimal additional costs or safety / EPA issues that are overriding problems in normal GOM shelf waters and especially deep water (> 400 meters).

SPECIFIC DISCUSSION OF ANADARKO'S MARCO POLO FIELD IN GULF OF MEXICO

Status of development @ August 2002:                                     Status of Development @ February 2003:
------------------------------------                                     --------------------------------------
  4 Expendable open hole logged wells                                      4 Expendable open hole logged wells
  4 Development wells                                                      6 Development wells for production


Anadarko Petroleum Corporation
February 20, 2003

Page 3

Ryder Scott Company performed a limited review of Anadarko's Original-Oil-in-Place (OOIP). We had previously concluded that the structures are sufficiently well defined by the 4 Expendable wells and the 3-D Seismic data, and now in February 2003, 6 development wells have defined additional reserves. However, we have not performed an independent estimate of the pay counts nor constructed isopach maps. The sands are massive and clean enough that a visual inspection of the logs is sufficient for us to audit Anadarko's porosity and water saturations. After an additional audit of Anadarko's log analysis, we concluded that if RSC independently analyzed this field for official reserves certification, our porosity values would be approximately the same average as Anadarko's, which was 30 percent. This 30 percent average porosity (and permeability confirmed by whole cores) is sufficiently high that sands 50 to 100 feet thick typically flow 10,000 to 15,000 bopd. However Anadarko has used only 2,900 bopd per well for their SEC reserve forecast. It is our opinion, based upon both Darcy's Law flow rate calculations and analogies to other GOM fields, that the actual producing rates will be much higher.

We have taken Anadarko's reservoir parameters (see attached) and have independently calculated flow rates of 4,000 bopd for 50 foot sands and up to 8,000 bopd for 100 foot +/- sands using only 10 percent bottom hole pressure draw-down. Additionally based upon analogies, we would expect actual, possibly commingled flow rates to exceed 10,000 bopd. As part of our GOM database, we have had occasion to audit recently 2 of the nearest offset discoveries, which happen to be located in the same geologic basin. Those discoveries have porosities generally around 26 to 28 percent. Wells in those 2 discoveries are forecasted to flow at 15,000 to 17,000 bopd due to tubing restrictions, but potentially calculate as high as 30,000 bopd without restriction. Both of those discoveries have lower GOR's and less mobile oil than Marco Polo.

CONCLUSIONS

The 1978 SEC reserves definitions clearly state that "Reservoirs are considered proved if economic producibility is supported by either actual production or conclusive formation test". Other parts of the definitions relate to fluid contacts, pricing, costs and development status. Anadarko has not conducted any traditional flow tests in their evaluation of the Marco Polo Field but has acquired all of the information obtainable from a flow test through other more safe, cost effective and environmentally sensitive means. All of these techniques, which include advanced well log suites, core analyses and down-hole sampling and flow testing, represent proven technologies developed or advanced beyond those available in 1978.

After a careful review of the data provided by Anadarko, both raw and interpreted, we conclude that you have acquired the necessary information to support economic producibility without conducting the type of flow testing envisioned in 1978 and that you have effectively met the SEC reserves definitions in that regard. Attached is our comparison of multiple MDT testing versus a single conventional flow test that was presented at the October 2002 SPEE conference on SEC reserves definitions. From this table it can be clearly deduced there is an overwhelming amount of additional data gained from multiple MDT testing versus a single conventional flow test. It is our opinion that an extensive MDT testing program provides a more compelling case of reasonable certainty for proved reserves than a single conventional flow test.

Furthermore, our internal industry survey in October 2002 indicated only 6 out of 45 fields or 13 percent have been traditionally flow tested in the deepwater Gulf of Mexico. It is also our experience that the practice of conducting a traditional flow test in the U.S. Gulf Coast and the Gulf of Mexico is limited to those circumstances where down-hole data are (1) not sufficiently conclusive to meet the "economic producibility" required or (2) where a level of refinement is needed in designing facilities to meet the expected rates of flow.


Anadarko Petroleum Corporation
February 20, 2003

Page 4

CONSENT

Anadarko is authorized to incorporate this letter in its required financial reporting or in communications with the U.S. SEC as long as the entire letter report is used. We would grant our consent for Anadarko to use selected portions of this report only upon specific review of the passages sought to be included. This consent is being granted for a limited time period not to exceed approximately 90 days from the effective date of this report.

RYDER SCOTT COMPANY, L.P.

                                             /s/ Ronald Harrell
                                             -----------------------------------
                                             Ronald Harrell, P.E.
                                             Chairman and CEO
DRH/sw


MARCO POLO DISCOVERY
DEEPWATER GULF OF MEXICO
ANADARKO PETROLEUM CORPORATION

RYDER SCOTT COMPANY FLOW RATE CALCULATIONS - AUGUST 2002

ROCK DATA
                            Porosity                               29.9     %
                            Permeability - k                        215     md
                            Water saturation - Sw                  32.9     %

RESERVOIR DATA
                            Pressure - BHP initial                 7433    psia
                            Temperature - reservoir                 121     F
                            Pay -average net feet                   113    feet

FLUID PROPERTIES
                            Oil gravity - API                        32
                            Solution Gas GOR                        920 scf / bbl
                            viscosity                               1.2     cp
                            bubble point                           2750     #

PRODUCING CONDITIONS
                            Drawdown ~ 10%                          750
                            skin factor  gravel-packed                2
                                                                  -----

CALCULATED INITIAL RATE                                           8,200    bopd
                                                                  -----


MDT MULTIPLE TESTS VS. ACTUAL PERFORATION / DST TESTS
FEBRUARY 18, 2003

                                                                     MDT TOOL
                                       -----------------------------------------------------------------
        TYPE OF MEASUREMENT                       ADVANTAGES                       DISADVANTAGES
        -------------------            -------------------------------    ------------------------------

Drawdown & commercial rate             multiple depth contributions       limited sample size
                                       measured


Permeability measurements              multiple depth mobilities (k)      shorter / limited time of test
                                       can capture foot by foot           in the past with older tools
                                       hetrogenity                        (see Future Trends)

Pressure measurements                  multiple depth tests reveal
                                       actual fluid gradients, I.e. gas
                                       vs. Oil vs. Water (validates
                                       some PVT data)

                                       fluid gradients at depth can
                                       define and confirm Gas/water or
                                       Oil/Water contacts

                                       Industry now determining Cond
                                       yields from press gradients

EXTENT OF FLOW DATA

      Multiple zone tests              In one pass, can take 50 +/-
                                       tests which usually covers many
                                       individual pays


      Multiple well tests across the   MDT costs low enough to run tool
        structure                      in most, if not all wells.
                                       Provides continuity between
                                       wells validating the size of
                                       area that is productive

FUTURE TRENDS

                                       Maxi-MDT tool and bypass flow
                                       before fluid sample capture
                                       approximate longer time actual
                                       prod tests



                                                               PROD. TEST - PERF OR DST
                                       -------------------------------------------------------------------------
        TYPE OF MEASUREMENT                        ADVANTAGES                        DISADVANTAGES
        -------------------            ---------------------------------   -------------------------------------

Drawdown & commercial rate             fluid to surface producing          DST test not representative of
                                       charteristics measured              completed well with typical gravel
                                                                           pack but skin damage

Permeability measurements              longer drawdown period (perceived)  only average Permeability (k)
                                                                           measured over the perforation / DST
                                                                           test interval

Pressure measurements                  long term buildups could            multiple $$$ million dollar costs &
                                       conceptually be possible, but at    EPA / MMS environmental risks
                                       prohibitively high costs & lack
                                       of storage (especially for Oil)








EXTENT OF FLOW DATA

      Multiple zone tests              Good comparison of actual           Costs are so high for one DST, or
                                       flowrates between different         especially perforation tests, that
                                       quality rocks                       only 1 or 2 zones are usually
                                                                           tested.

      Multiple well tests across the             --------------            High costs that typically range
        structure                                                          from $5 - 15MM limits this type of
                                                                           test to almost always a single well.



FUTURE TRENDS

                                                 --------------            EPA requirements and increased
                                                                           pressures on Oil industry in
                                                                           general increasing rapidly, making
                                                                           future risks of Oil spills or
                                                                           incomplete burn even more
                                                                           politically difficult.