EXHIBIT 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES -14- EXHIBIT 12 DENBURY RESOURCES INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Nine months ended Years ended December 31, September 30, ----------------------------- ------------------------ Pro Pro Forma Forma 1995 1996 1997 1997 1997 1998 1998 ------- ------ ------- ------ ------ -------- -------- Earnings: Pretax income from continuing operations 1,081 14,056 23,798 24,601 16,878 (175,660)(171,820) Fixed charges 2,161 4,080 1,262 459 498 12,954 9,114 ------- ------ ------- ------ ------ -------- -------- Earnings (losses) 3,242 18,136 25,060 25,060 17,376 (162,706)(162,706) ------- ------ ------- ------ ------ -------- -------- Fixed Charges: Interest expense 2,085 1,993 1,111 308 387 12,788 8,948 Interest component of rent expense 76 116 151 151 111 166 166 Imputed preferred dividend -- 1,281 -- -- -- -- -- Preferred dividend tax effect -- 690 -- -- -- -- -- ------- ------ ------- ------ ------ -------- -------- Fixed charges 2,161 4,080 1,262 459 498 12,954 9,114 ------- ------ ------- ------ ------ -------- -------- Ratio of earnings to fixed charges 1.5 4.4 19.9 54.6 34.9 (a) (a) ======= ====== ======= ====== ====== ======== ======== <FN> (a) As a result of pre-tax losses of $175,660,000 and $171,820,000 incurred for the nine months ended September 30, 1998, on an actual and pro-forma basis, respectively, DRI was unable to cover its fixed charges of $12,954,000 and $9,114,000, respectively. </FN> -1-