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EXHIBIT 13
FIVE YEAR FINANCIAL HIGHLIGHTS *
<Table>
<Caption>
% change
dollars in millions, except per share amounts 2003 2003-2002 2002 2001 2000 1999
- ----------------------------------------------- ---------- ---------- ---------- ---------- ---------- ----------
Revenues $ 5,122 33 $ 3,845 $ 4,718 $ 2,911 $ 748
Operating Income (Loss) 2,208 57 1,410 (363) 1,352 175
Net Income (Loss) Available to
Common Stockholders before Change
in Accounting Principle 1,240 50 825 (183) 813 32
Net Income (Loss) 1,287 56 825 (188) 796 32
Net Cash Provided by Operating Activities $ 3,043 39 $ 2,196 $ 3,321 $ 1,536 $ 318
Per Common Share:
Net Income (Loss) - Basic $ 5.16 55 $ 3.32 $ (0.75) $ 4.32 $ 0.25
Net Income (Loss) - Diluted $ 5.09 59 $ 3.21 $ (0.75) $ 4.16 $ 0.25
Dividends $ 0.44 35 $ 0.325 $ 0.225 $ 0.20 $ 0.20
Average Shares Outstanding - Basic 250 1 248 250 184 125
Average Shares Outstanding - Diluted 253 (3) 260 250 193 126
Capital Expenditures $ 2,792 17 $ 2,388 $ 3,316 $ 1,708 $ 680
---------- ---------- ---------- ---------- ---------- ----------
Total Debt $ 5,058 (8) $ 5,471 $ 5,050 $ 3,984 $ 1,443
Stockholders' Equity 8,599 23 6,972 6,365 6,786 1,535
Total Assets $ 20,546 13 $ 18,248 $ 16,771 $ 16,590 $ 4,098
---------- ---------- ---------- ---------- ---------- ----------
Annual Sales Volumes:
Gas (Bcf) 643 -- 642 695 385 170
Oil and Condensate (MMBbls) 67 (11) 75 68 36 15
NGLs (MMBbls) 17 13 15 15 12 7
Total Barrels of Oil Equivalent (MMBOE) 192 (3) 197 199 112 50
---------- ---------- ---------- ---------- ---------- ----------
Average Daily Sales Volumes:
Gas (MMcf/d) 1,762 -- 1,760 1,904 1,052 465
Oil and Condensate (MBbls/d) 184 (10) 205 186 98 40
NGLs (MBbls/d) 47 15 41 42 33 18
Total Barrels of Oil Equivalent (MBOE/d) 525 (3) 539 546 306 135
---------- ---------- ---------- ---------- ---------- ----------
Oil Reserves (MMBbls) 1,226 8 1,131 1,132 1,046 573
Gas Reserves (Tcf) 7.7 8 7.2 7.0 6.1 2.5
Total Reserves (MMBOE) 2,513 8 2,328 2,305 2,061 991
---------- ---------- ---------- ---------- ---------- ----------
Worldwide Finding Cost ($/BOE)** $ 6.95 (34) $ 10.52 $ 8.53 $ 7.19 $ 4.87
Worldwide Reserve Replacement (% of Production) 196% 75 112% 221% 1,059% 213%
---------- ---------- ---------- ---------- ---------- ----------
Number of Employees 3,500 (8) 3,800 3,500 3,500 1,400
---------- ---------- ---------- ---------- ---------- ----------
</Table>
* 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 finding
and development costs by the worldwide reserve additions, including
revisions and excluding sales in place. Finding and development costs
exclude asset retirement costs and include actual asset retirement
expenditures.
<Table>
Table of Measures
Bcf - Billion cubic feet MMBbls - Million barrels
BOE - Barrels of oil equivalent MMBOE - Million barrels of oil equivalent
MBbls/d - Thousand barrels per day MMcf/d - Million cubic feet per day
MBOE/d - Thousand barrels of oil equivalent per day Tcf - Trillion cubic feet
</Table>
STOCKHOLDER INFORMATION
The common stock of Anadarko Petroleum Corporation is traded on the New
York Stock Exchange. Average daily trading volume was 2,358,000 shares in 2003,
1,793,000 shares in 2002 and 2,726,000 shares in 2001. The ticker symbol for
Anadarko is APC and 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 2003 and 2002.
<Table>
<Caption>
FIRST SECOND THIRD FOURTH
QUARTER QUARTER QUARTER QUARTER
---------- ---------- ---------- ----------
2003
Market Price
High $ 48.87 $ 49.95 $ 45.05 $ 51.29
Low $ 42.24 $ 44.17 $ 40.49 $ 41.35
Dividends $ 0.100 $ 0.100 $ 0.100 $ 0.140
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
</Table>