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 Three Months Ended March 31, 2000 and Five Years Ended December 31, 1999 Three Months Ended March 31 Years Ended December 31 thousands 2000 1999 1998 1997 1996 1995 Gross Income $105,397 $178,941 $ (7,388) $205,318 $196,763 $65,624 Rentals 3,038 11,120 12,477 8,266 4,234 2,457 Earnings 108,435 190,061 5,089 213,584 200,997 68,081 Gross Interest Expense 26,190 96,116 82,415 62,095 55,986 52,557 Rentals 3,038 11,120 12,477 8,266 4,234 2,457 Fixed Charges $ 29,228 $107,236 $ 94,892 $ 70,361 $ 60,220 $55,014 Preferred Stock Dividends 4,266 17,063 10,951 -- -- -- Combined Fixed Charges and Preferred Stock Dividends $ 33,494 $124,299 $105,843 $ 70,361 $ 60,220 $55,014 Ratio of Earnings to Fixed Charges 3.71 1.77 0.05 3.04 3.34 1.24 Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends 3.24 1.53 0.05 3.04 3.34 1.24 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.