OPERATORS · TEXAS · P-5 NUMBER 186120

Cox Oil & Gas, Inc.

WindowAll time 90 days 1 year 3 years 10 years

CountyWebb 30 Duval 13 Starr 9 Galveston 4 De Witt 4 Borden 3 Lavaca 3 Zapata 3 Jim Hogg 3 San Patricio 2

85 FILINGS · 70 PERMITS · PAGE 2 OF 2 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
May 12, 1987	329925	Drill	Webb	Ruben Gonzalez Gas Unit #4	16,000	—	47934517	Now Hughes Dan A. Company L.P.
May 12, 1987	329925Amendment	Drill	Webb	Ruben Gonzalez Gas Unit #4	15,000	—	47934517	Now Hughes Dan A. Company L.P.
May 12, 1987	329925Amendment	Drill	Webb	Ruben Gonzalez Gas Unit #4	15,000	Final completion	47934517	Now Hughes Dan A. Company L.P.
Apr 16, 1987	328938	Drill	Webb	Armstrong 258 #1	15,500	Final completion	47934506	Now Cox Martin Regan
Apr 7, 1987	327219	Recompletion	San Patricio	Gallagher #1	11,004	Final completion	40931562	Now Exxcel Operating Company
Mar 25, 1987	328033	Drill	Duval	Hamilton, Buck #1	12,000	Plugged dry hole (P&A)	13136995	—
Mar 3, 1987	327106	Recompletion	Nueces	Chapman Ranch #6	4,850	Final completion	35530728	Now Carter Exploration Company
Nov 14, 1986	323008	Drill	Starr	Samano, M. #3	9,100	Final completion	42732158	Now Starco Exploration Inc.
Oct 28, 1986	322346	Recompletion	Lavaca	Williams Gas Unit #1	12,756	Final completion	28531897	Now Lundberg Operating Corporation
Oct 16, 1986	321759	Drill	Webb	Vergara 1680 #8	11,300	—	47934430	Now Hilcorp Energy Company
Oct 16, 1986	321759Amendment	Drill	Webb	Vergara 1680 #8	11,300	Final completion	47934430	Now Hilcorp Energy Company
Oct 16, 1986	321759Amendment	Drill	Webb	Vergara 1680 #8	11,316	—	47934430	Now Hilcorp Energy Company
Sep 11, 1986	320362	Recompletion	De Witt	Kolodzey, C. #1	11,473	Final completion	12330212	—
Sep 2, 1986	320082	Recompletion	Galveston	Creston King #3	7,260	Drive pipe	16730399	Now Galveston Bay Operating Co LLC
Aug 26, 1986	305600	Drill	Webb	Gonzalez, Ruben #2	16,000	—	47934414	Now Hughes Dan A. Company L.P.
Aug 26, 1986	305600Amendment	Drill	Webb	Gonzales, Ruben #2	16,000	Final completion	47934414	Now Hughes Dan A. Company L.P.
Aug 20, 1986	305429	Drill	Starr	State of Texas #1	10,000	Final completion	42732137	Now Tasca Exploration Company
Aug 5, 1986	304888	Drill	Webb	B.M.T. 69 #1	16,000	Final completion	47934405	Now XCL-Texas Inc.
Jul 15, 1986	304143	Drill	Mitchell	Brennand "A" #1	8,200	Final completion	33533251	Now Petra Oleum Corp.
Mar 31, 1986	300399	Drill	Mitchell	Brennand #2	8,100	Unsuccessful workover	33533231	Acquired from Cox, Edwin L. & Cox, Berry R.
Mar 20, 1986	299956	Drill	Starr	Samano, M. #2	8,300	Final completion	42732116	Now Fletcher Operating LLC
Feb 26, 1986	298518Amendment	Drill	Garza	North Huntley Unit #T313	3,950	Final completion	16932706	Now Southwest Royalties Inc.
Jan 11, 1985	263959	Drill	Zapata	Escamilla #1	11,500	Final completion	50532010	Acquired from Cox, Edwin L. & Cox, Berry R.
Nov 5, 1984	257058	Drill	Kent	O'Donnell #1	7,271	Final completion	26331095	Acquired from Cox, Edwin L. & Cox, Berry R.
Oct 15, 1984	254226	Recompletion	San Patricio	City of Portland Gas Unit 'A' #3	12,035	Unsuccessful workover	40930452	Acquired from Cox, Edwin L. & Cox, Berry R.
Aug 2, 1984	246983	Recompletion	Galveston	Hall's Bayou Ranch "B" #1	5,315	Final completion	16730703	Acquired from Cox, Edwin L.
Jun 8, 1983	197647	Recompletion	Galveston	Hall's Bayou Ranch "B" #1	5,315	Final completion	16730703	Acquired from Cox, Edwin L.
Jul 29, 1982	167629	Drill	Culberson	Cox #1	3,600	Final completion	10931637	Acquired from Cox, Edwin L. & Cox, Berry R.
Feb 12, 1982	150577	Drill	Jim Hogg	Martinez, Arnoldo A. #1	16,000	Final completion	24731424	Acquired from Cox, Edwin L. & Cox, Berry R.
Apr 30, 1981	116454	Drill	Angelina	USA 12066 #2	9,400	Final completion	00530122	Acquired from Cox,e.l. & Cox,b.r.-Goldking
Mar 24, 1980	77050	Drill	Duval	Dougherty Unit #HG57	2,300	Spudded	13132939	Acquired from Cox, Edwin L.
Jul 5, 1979	52281	Recompletion	De Witt	Kolodzey, Charles E. #1	11,473	—	12330212	Acquired from Cox, Edwin L Jr
Mar 1, 1979	43552	Drill	Galveston	Hall's Bayou Ranch "B" #1	5,300	Final completion	16730703	Acquired from Cox, Edwin L.
Dec 4, 1978	37994	Drill	Duval	Dougherty Unit #HG-58	2,300	Final completion	13132938	Acquired from Cox, Edwin L.
Dec 1, 1978	37995	Drill	Duval	Dougherty Unit #HG-57	2,300	—	13132939	Acquired from Cox, Edwin L.