OPERATORS · TEXAS · P-5 NUMBER 139586

Cass Oil Company

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CountyReagan 77 Sutton 51 Irion 29 Concho 3 Upton 3 Mitchell 2 Glasscock 2 Midland 1 Crane 1 Tom Green 1

171 FILINGS · 170 PERMITS · PAGE 2 OF 4 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
Oct 26, 1984	255791	Drill	Reagan	Reynolds #4108	8,500	Final completion	38333278	Now Endeavor Energy Resources L.P.
Sep 19, 1984	251842	Drill	Reagan	Nunn #3	8,300	Final completion	38333207	Now Endeavor Energy Resources L.P.
Sep 19, 1984	251838	Drill	Reagan	Nunn 44 #2	8,300	Final completion	38333203	Now Parker & Parsley Development Co.
Sep 19, 1984	251839	Drill	Reagan	Ganze #6	8,300	Final completion	38333204	Now Pioneer Natural Res. USA Inc.
Sep 19, 1984	251841	Drill	Reagan	Ganze #5	8,300	Plugged dry hole (P&A)	38333206	—
Sep 19, 1984	251840	Drill	Reagan	Ganze #4	8,300	Final completion	38333205	Now Pioneer Natural Res. USA Inc.
Sep 19, 1984	251843	Drill	Reagan	Nunn #4	8,300	Final completion	38333208	Now Endeavor Energy Resources L.P.
Sep 18, 1984	251676	Drill	Reagan	Newmont #3702	8,350	Final completion	38333202	Now Endeavor Energy Resources L.P.
Sep 18, 1984	251675	Drill	Reagan	Kehew #1702	8,350	Final completion	38333201	Now Endeavor Energy Resources L.P.
Aug 2, 1984	247174	Drill	Reagan	State 10 #1	8,000	Final completion	38333150	Now Endeavor Energy Resources L.P.
Jul 30, 1984	246663	Drill	Reagan	Exxon-Douglas #2	8,000	Final completion	38333146	Now Diamondback E&P LLC
Jul 23, 1984	245857	Drill	Reagan	Smith #1	8,500	Final completion	38333142	Now Endeavor Energy Resources L.P.
Jul 23, 1984	245860	Drill	Reagan	Howard 32A #2	8,200	Final completion	38333143	Now Endeavor Energy Resources L.P.
Jul 9, 1984	244373	Drill	Reagan	Exxon-Douglas #1	8,000	Final completion	38333128	Now Diamondback E&P LLC
May 23, 1984	239985	Drill	Reagan	Branch #1	8,000	Final completion	38333074	Now Endeavor Energy Resources L.P.
May 18, 1984	239302	Drill	Reagan	Branch "A" #1	8,000	Final completion	38333062	Now Endeavor Energy Resources L.P.
May 8, 1984	238097	Drill	Reagan	Douglas, Cara 10 #2	7,800	Final completion	38333047	Now Diamondback E&P LLC
Apr 30, 1984	237030	Drill	Sutton	Allison-Miers #1308	6,000	Final completion	43533117	Now Upp Operating LLC
Apr 26, 1984	236731	Drill	Sutton	Allison-Miers #6908A	6,500	Plugged dry hole (P&A)	43533114	—
Apr 20, 1984	236209	Drill	Sutton	Allison-Miers #7304	6,000	Final completion	43533112	Now Dominion Oklahoma Texas E&P Inc
Apr 10, 1984	235253	Drill	Sutton	Allison-Miers #7105	6,000	Final completion	43533103	Now Upp Operating LLC
Mar 12, 1984	232152	Drill	Sutton	Allison-Miers #6908	6,000	Plugged dry hole (P&A)	43533093	—
Feb 10, 1984	228912	Drill	Sutton	Allison-Miers #6905	6,000	Final completion	43533080	Now Smith Pipe of Abilene
Feb 10, 1984	229114	Drill	Reagan	Hughes 22 #4	8,000	Final completion	38332936	Now Diamondback E&P LLC
Jan 31, 1984	227872	Drill	Sutton	Miers, Allison #1307	6,500	Final completion	43533074	Now Upp Operating LLC
Jan 26, 1984	228382	Drill	Reagan	Hughes Bronson "C" #1	7,800	Final completion	38332601	Now Endeavor Energy Resources L.P.
Jan 24, 1984	227009	Drill	Sutton	Allison-Miers #6904	6,500	Final completion	43533070	Now Smith Pipe of Abilene
Jan 23, 1984	227044	Drill	Reagan	Crews, Carol 8 #2X	7,800	Final completion	38332925	Now Parker & Parsley Development L.P
Jan 16, 1984	226563	Drill	Reagan	Moore, C. R. #1	8,500	Final completion	38332918	Now Diamondback E&P LLC
Jan 10, 1984	226135	Drill	Sutton	Allison-Miers #6903	6,500	Final completion	43533066	—
Jan 6, 1984	225898	Drill	Reagan	Bird C #2	8,500	Final completion	38332907	Now Endeavor Energy Resources L.P.
Jan 6, 1984	225908	Drill	Reagan	Bird E #2	8,500	Final completion	38332910	Now Endeavor Energy Resources L.P.
Jan 6, 1984	225906	Drill	Reagan	Bird, Ethel 42 #3	8,500	Final completion	38332909	Now Cox John L.
Jan 6, 1984	225924	Drill	Reagan	Bird 34 #2	8,500	Final completion	38332911	Now Endeavor Energy Resources L.P.
Jan 6, 1984	225925	Drill	Reagan	Newmont A #2	8,500	Final completion	38332912	Now Endeavor Energy Resources L.P.
Jan 6, 1984	225926	Drill	Reagan	Greathouse, B. R. #2	8,500	Final completion	38332913	Now Endeavor Energy Resources L.P.
Jan 6, 1984	225905	Drill	Reagan	GL Welch 44 #2	8,500	Final completion	38332908	Now Endeavor Energy Resources L.P.
Jan 5, 1984	225885	Drill	Reagan	Bird, Ethel 42 #4	8,000	Final completion	38332906	Now Cox John L.
Dec 30, 1983	225147	Drill	Sutton	Allison-Miers #1306	6,600	Final completion	43533061	—
Dec 28, 1983	224947	Drill	Sutton	Allison-Miers #6906	6,600	Final completion	43533060	Now Smith Pipe of Abilene
Dec 19, 1983	224199	Drill	Reagan	Hughes, Charles 1210 #8	8,000	Final completion	38332867	Now Endeavor Energy Resources L.P.
Dec 19, 1983	224205	Drill	Reagan	Hughes, Charles 1210 #7	8,000	Final completion	38332868	Now Endeavor Energy Resources L.P.
Dec 19, 1983	224207	Drill	Reagan	Hughes, Charles 1210 #6	8,000	Final completion	38332869	Now Endeavor Energy Resources L.P.
Dec 19, 1983	224285	Drill	Sutton	Allison-Miers #6907	6,600	Final completion	43533057	—
Dec 13, 1983	223347	Drill	Reagan	Hughes, Charles 1210 #4	8,000	Final completion	38332854	Now Parker & Parsley Development L.P
Dec 13, 1983	223349	Drill	Reagan	Hughes, Charles 1210 #5	8,000	Final completion	38332855	Now Endeavor Energy Resources L.P.
Dec 7, 1983	222929	Drill	Sutton	Zapata #6502	6,800	Plugged dry hole (P&A)	43533052	—
Nov 22, 1983	221585	Drill	Reagan	Hughes 22 #3	8,000	Final completion	38332822	Now Diamondback E&P LLC
Nov 22, 1983	221483	Drill	Reagan	Bronson, Hughes A #1	7,800	Final completion	38332821	Now Endeavor Energy Resources L.P.
Nov 8, 1983	220126	Drill	Reagan	University 4 NW #4	2,500	—	38332800	—