1 EXHIBIT 12 MESA INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (IN THOUSANDS) The following computation of the ratio of earnings to fixed charges for the years ended December 31, 1991, 1992, 1993, 1994 and 1995 and each of the three-month periods ended March 31, 1995 and 1996 represent the actual results of Mesa's operations for those periods. The columns entitled "As Adjusted for the Recapitalization" include data for Mesa after giving effect to the Recapitalization as if such Recapitalization had occurred on January 1, 1995. THREE MONTHS YEARS ENDED DECEMBER 31, ENDED MARCH 31, ------------------------------------------------------------------------ ------------------------------------ 1995 1995 1996 --------------------------- ------- -------------------------- AS ADJUSTED AS ADJUSTED FOR THE FOR THE 1991 1992 1993 1994 ACTUAL RECAPITALIZATION ACTUAL RECAPITALIZATION -------- -------- --------- -------- -------- ---------------- ------- ---------------- EARNINGS: Net income (loss)...... $(79,163) $(89,232) $(102,448) $(83,353) $(57,568) $ (3,166) $(7,894) $ 1,057 $ 9,596 Adjustments: Interest expense... 150,770 143,392 142,002 144,757 148,630 83,745 36,663 37,749 21,549 -------- -------- -------- --------- -------- -------- ------- ------- ------- Total earnings.... $ 71,607 $ 54,160 $ 39,554 $ 61,404 $ 91,062 $ 80,579 $28,769 $38,806 $ 31,145 ======== ======== ======== ========= ======== ======== ======= ======= ======= Fixed charges Interest capitalized... $ -- $ 2,365 $ 2,884 $ 104 $ 908 $ 908 $ -- $ 68 $ 68 Interest expense... 150,770 143,392 142,002 144,757 148,630 83,745 36,663 37,749 21,549 -------- -------- -------- --------- -------- -------- ------- ------- ------- Total fixed charges..... $150,770 $145,757 $ 144,886 $144,861 $149,538 $ 84,653 $36,663 $37,817 $ 21,617 ======== ======== ======== ========= ======== ======== ======= ======= ======= Ratio of earnings to fixed charges..... NM NM NM NM NM NM NM 1.03 1.44 ======== ======== ======== ========= ======== ======== ======= ======= ======= Preferred dividend requirements... $ 21,845 $ 5,737 ======== ======= Total fixed charges and preferred dividends... $106,498 $ 27,354 ======== ======= Ratio of earnings to combined fixed charges and preferred dividends... NM 1.14 ======== ======= Amount by which fixed charges exceed earnings.... $ 79,163 $ 91,597 $ 105,332 $ 83,457 $ 58,476 $ 4,074 $ 7,894 $ -- $ -- ======== ======== ======== ========= ======== ======== ======= ======= ======= Amount by which combined fixed charges and preferred dividends exceed earnings.... $ 25,919 $ -- ======== =======