Exhibit 12 Enron Oil & Gas Company Computation of Ratio of Earnings to Fixed Charges (In Thousands) (Unaudited) Nine Months Ended Year Ended December 31 9/30/96 1995 1994 1993 1992 1991 Earnings Available for Fixed Charges: Net Income $104,872 $ 142,118 $ 147,998 $ 138,025 $ 97,580 $ 47,916 Less: Capitalized Interest Expense (6,188) (6,490) (6,124) (5,457) (3,580) (4,482) Add: Fixed Charges 15,008 18,414 14,613 15,378 25,869 33,982 Income Tax Provision(Benefit) 36,159 41,936 5,937 (25,752) (17,736) (2,247) Earnings Available $149,851 $ 195,978 $ 162,424 $ 122,194 $102,133 $ 75,169 Fixed Charges: Interest Expense 8,439 11,310 8,135 9,921 22,289 29,500 Capitalized Interest 6,188 6,490 6,124 5,457 3,580 4,482 Rental Expense Representative of Interest Factor 381 614 354 - - - Total Fixed Charges $15,008 $ 18,414 $ 14,613 $ 15,378 $ 25,869 $ 33,982 Ratio of Earnings to Fixed Charges 9.98 10.64 11.12 7.95 3.95 2.21