EXHIBIT 11.1 SNYDER OIL CORPORATION COMPUTATION OF PER SHARE EARNINGS (Unaudited) Six Months Year Ended December 31, Ended June 30, --------------------------------------- ------------------ 1994 1995 1996 1997 ---------- ---------- --------- ------------------ (In thousands, except share data) Net income (loss) $12,372 ($39,831) $62,950 $23,070 Dividends on preferred stock (10,806) (6,210) (6,210) (3,100) --------- --------- --------- --------- Net income (loss) available to common $1,566 ($46,041) $56,740 $19,970 ========= ========= ========= ========= Weighted average shares outstanding 23,704 30,186 31,308 30,435 Assumed exercise of vested common stock options net of treasury shares repurchased 290 138 179 289 Assumed conversion of 6% preferred stock 4,881 4,881 5,051 5,051 --------- --------- --------- --------- Weighted average common stock and equivalents outstanding 28,875 35,205 36,538 35,775 ========= ========= ========= ========= Primary netincome (loss) per common share: Net income (loss) $0.52 ($1.32) $2.01 $0.76 Dividends on preferred stock (0.45) (0.21) (0.20) (0.10) --------- --------- --------- --------- Net income (loss) available to common $0.07 ($1.53) $1.81 $0.66 ========= ========= ========= ========= Fully diluted net income (loss) per common share: Net income (loss) $0.43 ($1.13) $1.72 $0.64 Dividends on preferred stock 0.00 0.00 0.00 0.00 --------- --------- --------- --------- Net income (loss) available to common $0.43 ($1.13) $1.72 $0.64 ========== ========= ========= =========