Exhibit 12 ---------- Plains Resources Inc. Computation of Ratios (In Thousands) Nine Months Ended September 30, -------------------- 1995 1996 1997 1998 1999 2000 1999 -------- -------- -------- ---------- -------- -------- ---------- (restated) (restated) RATIO OF EARNINGS TO FIXED CHARGES Earnings Net income (loss) before income taxes, minority interest and extraordinary item $ 2,652 $ 17,754 $ 22,586 $ (106,565) $(85,469) $100,568 $ (76,803) Fixed charges 18,190 22,415 27,276 48,826 73,952 73,615 52,103 Less capitalized interest (3,093) (3,613) (3,280) (3,683) (4,409) (3,236) (3,203) -------- -------- -------- ---------- -------- -------- ---------- Total earnings available for fixed charges $ 17,749 $ 36,556 $ 46,582 $ (61,422) $(15,926) $170,947 $ (27,903) ======== ======== ======== ========== ======== ======== ========== Fixed charges Interest expense $ 13,606 $ 17,286 $ 22,012 $ 35,730 $ 46,378 $ 41,912 $ 32,668 Capitalized interest 3,093 3,613 3,280 3,683 4,409 3,236 3,203 Interest portion on rentals 363 340 367 443 2,803 1,848 2,102 Amortization of debt issue costs 1,128 1,176 1,350 1,163 3,926 8,412 2,119 Pre-tax preferred dividend requirement -- -- 267 7,807 16,436 18,207 12,011 -------- -------- -------- ---------- -------- -------- ---------- Total fixed charges $ 18,190 $ 22,415 $ 27,276 $ 48,826 $ 73,952 $ 73,615 $ 52,103 ======== ======== ======== ========== ======== ======== ========== Earnings in excess of (required to cover) fixed charges $ (441) $ 14,141 $ 19,306 $ (110,248) $(89,878) $ 97,332 $ (80,006) Earnings to fixed charges 1.0 1.6 1.7 -- (A) -- (B) 2.3 -- (C) (A) The available earnings failed to cover charges by $110.2 million. Included in earnings for 1998 was a nonrecurring gain of $60.8 million before income taxes relating to the formation of Plains All American, a noncash full cost ceiling writedown of $173.9 million before income taxes and $7.1 million in unauthorized trading losses. If such events had not occurred, the ratio of earnings to fixed charges would have been 1.2. (B) The available earnings failed to cover fixed charges by $89.9 million. Included in earnings for 1999 was $166.4 million in unauthorized trading losses, a $16.5 million gain on the sale of linefill, a $9.8 million gain related to the sale of units by Plains All American, and restructuring expenses of $1.4 million. If such events had not occurred, the ratio of earnings to fixed charges would have been 1.7. (C) The available earnings failed to cover fixed charges by $80.0 million. Included in earnings for the nine months ended September 30, 1999 was $114.9 million in unauthorized trading losses and restructuring expenses of $1.4 million. If such events had not occurred, the ratio of earnings to fixed charges would have been 1.7. Plains Resources Inc. Page 2 Pro Forma Computation of Ratios (In Thousands) Nine Months Year Ended Ended December 31, September 30, 1999 2000 ------------ ------------- PRO FORMA RATIO OF EARNINGS TO FIXED CHARGES Earnings Net income (loss) before income taxes, minority interest and extraordinary item $(85,469) $ 100,568 Fixed charges 60,116 63,308 Less capitalized interest (4,409) (3,236) -------- ---------- Total earnings available for fixed charges $(29,762) $ 160,640 ======== ========== Fixed charges Interest expense $ 46,378 $ 41,912 Capitalized interest 4,409 3,236 Interest portion on rentals 2,803 1,848 Amortization of debt issue costs 3,926 8,412 Pre-tax preferred dividend requirement 2,600 7,900 -------- ---------- Total fixed charges $ 60,116 $ 63,308 ======== ========== Earnings in excess of (required to cover) fixed charges $(89,878) $ 97,332 Earnings to fixed charges - (A) 2.5 (A) The available earnings failed to cover fixed charges by $89.9 million. Included in earnings for 1999 was $166.4 million in unauthorized trading losses, a $16.5 million gain on the sale of linefill, a $9.8 million gain related to the sale of units by Plains All American, and restructuring expenses of $1.4 million. If such events had not occurred,the ratio of earnings to fixed charges would have been 1.9.