OPERATORS · TEXAS · P-5 NUMBER 774720

Shell Western E&P Inc.

WindowAll time 90 days 1 year 3 years 10 years

TypeDrill 1536 Recompletion 579 Other 148 Reenter 10 Field transfer 1

40 FILINGS · 38 PERMITS · PAGE 1 OF 1 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
Dec 15, 1999	490389	Recompletion	Zapata	Muzza, G. P. #8	14,500	—	50531946	Now Block T Petroleum Inc.
Oct 19, 1999	488662	Recompletion	Zapata	Levendecker, G. L. #4	14,350	Unperforated completion	50533454	Now NI Energy LLC
Apr 7, 1999	483714	Drill	Zapata	Leyendecker G.L. #5	15,500	Final completion	50533925	Now NI Energy LLC
Feb 17, 1998	473383	Recompletion	Zapata	Hinojosa, G.G. #8	11,650	Final completion	50531450	Now Shell Western E&P
Jan 8, 1997	457141	Drill	Zapata	Muzza, G. P. #9	15,150	Final completion	50533536	Now STX Operating Company
Jun 28, 1996	449792	Drill	Zapata	Leyendecker, G. L. #4	15,500	Final completion	50533454	Now NI Energy LLC
Dec 13, 1995	442806	Recompletion	Zapata	Hinojosa, G. G. #14	17,375	Final completion	50533262	Now STX Operating Company
Feb 27, 1995	433334	Recompletion	Zapata	Muzza, G. P. #6	16,849	Final completion	50531872	Now NI Energy LLC
Nov 7, 1994	429788	Drill	Zapata	Hinojosa, G. G. #14	18,900	Final completion	50533262	Now STX Operating Company
Jul 12, 1994	425771	Recompletion	Zapata	Leyendecker, G. L. #3	14,220	Final completion	50531908	Now NI Energy LLC
Aug 6, 1993	414646	Drill	Zapata	Zachry, H. B. Company #5	17,900	Final completion	50533072	Now STX Operating Company
Aug 6, 1993	414646Amendment	Drill	Zapata	Zachry, H. B. Company #5	18,800	Spudded	50533072	Now STX Operating Company
Jan 15, 1993	408131	Recompletion	Zapata	Zachry, H. B. Company #2	18,075	Final completion	50531567	Now Comstock Oil & Gas LP
Sep 25, 1992	403876	Recompletion	Zapata	Worley, R.J. #1	18,520	Final completion	50531405	Now Jurassic Exploration Inc.
Sep 20, 1990	378110	Recompletion	Zapata	Zachry, H. B. Co. #1	18,130	—	50531304	Now STX Operating Company
Sep 20, 1990	378110Amendment	Recompletion	Zapata	Zachry, H. B. Co. #1	18,130	Final completion	50531304	Now STX Operating Company
Aug 25, 1989	363162	Recompletion	Zapata	Muzza, G. P. #4	15,681	Final completion	50531610	Now STX Operating Company
Nov 21, 1986	323357	Recompletion	Zapata	Zachry, H. B. Company #2	18,075	Final completion	50531567	Now Comstock Oil & Gas LP
Jan 14, 1986	295554	Recompletion	Zapata	Longoria, M. T. #3	17,383	Final completion	50531546	—
Sep 16, 1985	284827	Drill	Zapata	Gonzalez, Leonal #1	16,000	Plugged dry hole (P&A)	50532125	—
Aug 21, 1985	282966	Drill	Zapata	Lopez, L. et Al #1	19,500	Plugged dry hole (P&A)	50532116	—
Apr 26, 1985	273454	Drill	Zapata	Muzza, G. P. #7	15,500	Final completion	50532063	Now NI Energy LLC
Apr 10, 1985	272119	Drill	Zapata	Salinas, H. G. #1	17,500	Plugged dry hole (P&A)	50532056	Now Vision Oil and Gas LLC
Dec 3, 1984	259500	Drill	Zapata	Muzza, G. P. #8	18,000	Final completion	50531946	Now Block T Petroleum Inc.
Nov 16, 1984	257840	Drill	Zapata	Hinojosa, G. G. #13	18,800	Final completion	50531941	Now STX Operating Company
Nov 16, 1984	257845	Drill	Zapata	Zachry, H. B. Company #4	18,500	Final completion	50531942	Now STX Operating Company
Aug 29, 1984	249807	Drill	Zapata	Leyendecker, G. L. #3	18,500	Final completion	50531908	Now NI Energy LLC
Jul 25, 1984	246202	Drill	Zapata	Muzza, G. P. #6	18,500	Final completion	50531872	Now NI Energy LLC
Jul 2, 1984	243743	Recompletion	Zapata	Hinojosa, G. G. #1	15,815	Unsuccessful workover	50531046	—
Apr 13, 1984	235624	Drill	Zapata	Hinojosa, G. G. #11	19,000	Final completion	50531797	Now NI Energy LLC
Feb 22, 1983	186834	Drill	Zapata	Zachry, H. B. "A" #2	19,350	Final completion	50531637	Now Zachry H. B. Company
Aug 19, 1982	169773	Drill	Zapata	Degarza, Paula Estate #1	16,500	Final completion	50531566	Acquired from Shell Oil Company
Jul 21, 1982	166854	Drill	Zapata	Muzza, G. P. #3	20,000	Final completion	50531554	Acquired from Shell Oil Company
Jun 22, 1982	164370	Drill	Zapata	Longoria, M. T. #3	17,373	Final completion	50531546	Acquired from Shell Oil Company
Mar 25, 1982	155286	Drill	Zapata	Vela, E. #1	10,000	Final completion	50531508	Acquired from Shell Oil Company
Feb 24, 1982	151922	Drill	Zapata	Degarcia, S.G. "A" #1	12,000	Final completion	50531501	Acquired from Shell Oil Company
Dec 31, 1981	147287	Drill	Zapata	Detrevino, Carmela G. #1	12,000	Final completion	50531480	Acquired from Shell Oil Company
Oct 7, 1980	94922	Drill	Zapata	Taylor, Leroy et Al #1	18,500	Final completion	50531295	Acquired from Shell Oil Company
Jun 5, 1980	83039	Drill	Zapata	Garza, L. et Al #2	16,369	Final completion	50531227	Acquired from Shell Oil Company
Oct 16, 1978	34608	Drill	Zapata	Hinojosa, G.G. #1	16,000	Final completion	50531046	Acquired from Shell Oil Company