COUNTIES · ECTOR · OPERATORS

Ector County Operators

Every operator with a permit on file or a well of record here, ranked by permits issued in the window. Wells are each operator's current inventory in the county from the RRC wellbore file.

1 year 3 years 10 years All time

#	Operator	Permits	All time	Horizontal	Wells	First	Last
1	Amoco Production Company	936	936	2	36	Jun 20, 1977	Apr 17, 1997
2	Occidental Permian Ltd.	934	934	52	3,338	May 15, 2000	Mar 19, 2026
3	Anadarko Petroleum Corporation	831	831	0	41	Aug 3, 1993	Apr 30, 2007
4	Conocophillips Company	656	656	38	149	Mar 6, 1998	Sep 24, 2020
5	XTO Energy Inc.	629	629	7	253	Jan 4, 2005	Jun 7, 2019
6	Phillips Petroleum Company	616	616	33	50	Jun 6, 1977	Nov 5, 2002
7	Sandridge Expl. and Prod., LLC	563	563	32	0	Aug 1, 1995	Feb 14, 2013
8	Berry Oil Comp.	409	409	0	0	Aug 18, 2010	Jul 28, 2014
9	Devon Energy Production Co, L.P.	393	393	32	0	Sep 25, 2001	Aug 27, 2014
10	Chevron U. S. A. Inc.	371	371	1	141	Sep 3, 1985	Oct 13, 2014
11	Fasken Oil and Ranch, Ltd.	354	354	5	312	Aug 27, 1999	Jun 13, 2022
12	Arco Oil & Gas Co.	339	339	0	188	May 7, 1979	Nov 18, 1993
13	Apache Corporation	333	333	95	68	Sep 4, 1997	May 12, 2017
14	Gulf Oil Corp.	314	314	0	18	Aug 15, 1977	Jun 28, 1985
15	OXY USA Inc.	313	313	2	522	Nov 4, 1987	Nov 14, 2024
16	OXY USA WTP LP	255	255	29	547	Feb 23, 2001	Jul 23, 2025
17	Sheridan Production Company, LLC	248	248	52	19	Apr 12, 2013	May 1, 2018
18	Diamondback E&P LLC	235	235	212	989	Sep 8, 2010	Oct 2, 2026
19	COG Operating LLC	232	232	54	173	Jun 29, 2005	Dec 11, 2025
20	Conoco Inc.	232	232	1	29	Oct 21, 1977	Jun 24, 1998
21	BC Operating, Inc.	221	221	0	9	May 14, 2010	Aug 18, 2014
22	Amoco Production Co.-Andrews	193	193	0	12	Jun 8, 1978	Aug 20, 1987
23	Texaco E & P Inc.	185	185	11	28	Apr 11, 1991	Feb 28, 2002
24	Legado Permian, LLC	173	173	0	1	Aug 4, 2008	Apr 22, 2013
25	Union Oil Company of California	170	170	0	13	Feb 7, 1980	Dec 30, 1999
26	Shell Western E&P Inc.	156	156	0	10	Mar 22, 1984	Nov 9, 1994
27	Energen Resources Corporation	148	148	0	0	Jun 30, 2000	Apr 10, 2015
28	FDL Operating, LLC	140	140	18	1	Jun 28, 2013	Jun 22, 2021
29	Reliance Energy, Inc.	138	138	19	0	Sep 14, 2009	Aug 30, 2016
30	Sun Exploration & Production Co.	133	133	0	1	Jun 22, 1977	Nov 17, 1988
31	Sun Expl. & Prod. Co.-Midland	129	129	0	12	Oct 17, 1978	Apr 20, 1988
32	Continental Resources, Inc.	122	122	121	67	Apr 25, 2022	Aug 26, 2026
33	Cities Service Company	118	118	0	1	Jul 20, 1977	Apr 5, 1983
34	Texaco Inc.	117	117	0	60	Aug 15, 1977	Feb 18, 1991
35	Rust Oil Corp.	115	115	0	59	Dec 22, 1983	Aug 29, 2025
36	Firebird Energy LLC	114	114	101	0	Aug 12, 2019	Mar 28, 2023
37	National Energy Group, Inc.	114	114	0	0	Jun 29, 1994	May 31, 2001
38	Latigo Petroleum Texas, LP	109	109	0	0	Jul 21, 2004	Feb 2, 2007
39	Linn Operating, Inc.	107	107	0	4	Feb 26, 2010	Jan 21, 2015
40	Continental Oil Company	100	100	0	8	Jun 6, 1977	Jul 3, 1979
41	Fina Oil & Chemical Company	98	98	1	13	Sep 19, 1985	Apr 22, 1996
42	Cities Service Oil & Gas Corp.	91	91	0	9	Jun 21, 1983	Mar 29, 1988
43	Kinder Morgan Production Co LLC	90	90	1	0	Jun 13, 2013	May 8, 2020
44	Shell Oil Company	83	83	0	8	Jun 24, 1977	Oct 6, 1983
45	RSP Permian, LLC	83	83	40	0	Feb 11, 2011	May 2, 2017
46	Citation Oil & Gas Corp.	80	80	0	243	Apr 13, 1993	May 21, 2014
47	Founders Oil & Gas Operating,llc	74	74	0	3	Apr 3, 2019	Jan 9, 2023
48	Neg Operating LLC	72	72	0	44	Feb 24, 2003	Mar 14, 2008
49	Atlantic Richfield Co.	70	70	0	21	Jun 7, 1977	Mar 30, 1979
50	Pure Resources, L.P.	67	67	0	2	Aug 10, 2000	Jan 14, 2004
51	Keystone Petroleum GP LLC	67	67	0	0	Jun 9, 2006	Nov 2, 2010
52	Exxon Corp.	65	65	0	7	Sep 22, 1977	Oct 11, 1996
53	Texaco Producing Inc.	64	64	0	20	Nov 18, 1985	Apr 1, 1991
54	Henry Petroleum LP	62	62	0	0	Sep 16, 2004	Feb 12, 2009
55	Laguna Petroleum Corporation	60	60	0	126	Jun 30, 1981	Sep 3, 2026
56	EXL Petroleum, LP	60	60	0	0	Jul 11, 2007	Oct 19, 2010
57	Kerr-McGee Corporation	56	56	0	4	Jul 7, 1977	Nov 13, 1990
58	Arco Permian	52	52	28	1	Nov 10, 1994	Jun 14, 2001
59	Rendova Oil Co	51	51	0	0	Jan 18, 1984	Nov 2, 1990
60	Eureka Prospecting Company	50	50	4	4	Jun 6, 1996	Sep 7, 2021
61	Sage Energy Company	49	49	0	0	Sep 1, 1982	Aug 7, 1991
62	Cross Timbers Energy, LLC	48	48	0	5	Jul 1, 2014	Mar 21, 2025
63	Ring Energy, Inc.	45	45	0	319	Apr 18, 2022	Jun 17, 2026
64	Windsor Permian LLC	43	43	0	0	Mar 9, 2010	Jun 27, 2012
65	Southland Royalty Company	40	40	0	1	Nov 10, 1977	Dec 29, 1988
66	Ovintiv USA Inc.	37	37	36	78	Dec 28, 2023	Oct 12, 2026
67	Energas Company	37	37	0	0	Jun 28, 1989	Jun 21, 2001
68	Titan Resources I, Inc.	35	35	0	0	Jan 11, 1996	Oct 28, 1999
69	Altura Energy Ltd.	34	34	0	8	May 20, 1998	Apr 24, 2000
70	Rankin Oil Co.	33	33	0	13	Sep 30, 1980	Jan 20, 1986
71	Union Texas Petroleum Corp.	31	31	0	3	Aug 15, 1977	May 2, 1990
72	Walsh & Watts, Inc.	30	30	0	117	Mar 23, 1979	Aug 3, 2023
73	Oryx Energy Company	30	30	0	2	Oct 9, 1990	Oct 7, 1991
74	Carlow Corp.	30	30	0	0	Jul 14, 1987	Feb 26, 1991
75	Patriot Resources, Inc.	29	29	0	0	Mar 6, 2008	Jan 13, 2011
76	Atkins Petroleum Corp.	28	28	0	5	Nov 27, 1984	Oct 25, 1988
77	American Petrofina Co. of Tex.	28	28	0	0	Jun 23, 1978	Jul 23, 1985
78	BTA Oil Producers	27	27	0	15	Sep 1, 1978	Sep 12, 2002
79	Independence Resources Mgmt, LLC	27	27	26	0	Aug 27, 2013	Jul 25, 2019
80	Enron Oil & Gas Company	26	26	0	0	Jun 28, 1994	Mar 31, 1999
81	Turrentine Oil & Gas, Inc.	26	26	0	0	Jan 24, 2006	Jun 8, 2017
82	Kerry Oil & Gas, Inc.	25	25	0	0	Nov 22, 1982	Oct 18, 1985
83	Penwell Energy, Inc.	25	25	6	0	May 3, 1988	Aug 20, 1993
84	Mariah Energy Corp.	24	24	0	5	Mar 15, 1988	Mar 20, 1996
85	Saga Petroleum LLC of Colorado	24	24	0	2	Sep 21, 2012	Feb 12, 2016
86	Petroleum Technical Services Co.	23	23	0	7	Jul 15, 1977	May 15, 1985
87	Tenneco Oil Co.	23	23	0	0	Nov 29, 1979	Sep 9, 1986
88	Lario Oil & Gas Company	22	22	0	26	Dec 16, 1996	Dec 10, 2021
89	Slant Operating, LLC	22	22	15	24	Oct 7, 2021	Sep 23, 2026
90	Earthstone Operating, LLC	22	22	22	0	Aug 30, 2021	Aug 28, 2023
91	Pride Energy Company	22	22	0	0	Jun 14, 2010	Oct 29, 2020
92	Triad Energy Corporation	22	22	0	0	Mar 18, 1983	Sep 30, 2009
93	Firebird Energy II LLC	21	21	21	9	Oct 6, 2025	Aug 28, 2026
94	Anadarko E&P Company LP	21	21	0	1	Jul 19, 2004	Aug 28, 2006
95	Imperial Gas Resources LLC	21	21	0	0	Apr 30, 1998	Nov 13, 2015
96	Texland Petroleum, L.P.	20	20	0	275	Aug 29, 2016	Dec 3, 2024
97	Andector Exploration Company	20	20	0	36	Feb 25, 1987	Oct 9, 2015
98	Legacy Reserves Operating LP	20	20	0	1	Feb 26, 2009	Mar 25, 2020
99	Capstone Natural Res II, LLC	19	19	0	0	Oct 17, 2016	Oct 18, 2017
100	Four Star Oil and Gas Company	18	18	10	21	Nov 7, 1991	Dec 8, 2008
101	Marathon Oil Company	18	18	3	1	Aug 8, 1980	Mar 23, 1999
102	Encore Operating, L.P.	18	18	5	0	Jun 25, 2002	Nov 25, 2003
103	Baker Operating, Inc.	17	17	0	363	Nov 2, 1990	Nov 16, 2018
104	Bluco Production Co., Inc.	17	17	0	15	Jun 6, 1983	May 21, 1986
105	Schlachter, David A.	17	17	0	5	Sep 26, 1977	Dec 11, 1985
106	Ares Energy, Ltd.	17	17	17	0	May 24, 2021	May 6, 2025
107	Hadaway Consult and Engineer,llc	17	17	16	0	Mar 6, 2017	Dec 5, 2019
108	Resolute Natural Res. Co., LLC	17	17	10	0	Jan 13, 2011	Apr 25, 2014
109	Endeavor Energy Resources L.P.	16	16	1	114	Jul 27, 2001	Nov 6, 2013
110	EOG Resources, Inc.	16	16	10	0	Jun 26, 2003	Jul 2, 2015
111	Ica Energy Operating, L.L.C	16	16	0	0	Sep 20, 2012	Oct 16, 2014
112	BP America Production Company	15	15	3	5	Feb 27, 2002	Feb 21, 2006
113	Southwest Royalties, Inc.	15	15	0	1	Feb 18, 2000	Feb 5, 2001
114	Fasken, David & Inez G.	15	15	0	0	Aug 16, 1983	May 13, 1985
115	Grand Energy, Inc.	14	14	0	1	Feb 7, 1990	Jan 25, 1993
116	Kelt Oil & Gas, Inc.	14	14	1	0	Dec 29, 1988	Aug 18, 1994
117	Arrington Oil&gas Operating LLC	13	13	12	1	May 23, 2025	Aug 28, 2026
118	Rexene Corporation	13	13	0	0	May 24, 1993	Mar 18, 1997
119	Maverick Permian LLC	12	12	8	835	Aug 4, 2022	Dec 13, 2022
120	Getty Oil Co.	12	12	0	14	May 15, 1978	Mar 16, 1988
121	Pioneer Natural Res. USA, Inc.	12	12	0	11	Mar 25, 2011	May 31, 2012
122	Three-B Oil Company, The	12	12	0	2	Sep 19, 1989	Jun 11, 1992
123	Minihan, Tom R.	12	12	0	1	Mar 3, 1981	Jul 26, 1989
124	M-T Petroleum, Inc.	12	12	0	1	Nov 15, 1982	Aug 13, 1986
125	Boyd & McWilliams Operating, LLC	12	12	0	0	Jun 28, 2011	Oct 30, 2014
126	Callon Petroleum Operating Co	12	12	0	0	Feb 4, 2010	Nov 10, 2010
127	Saga Pet. Ltd Liability Co of Co	12	12	0	0	Dec 28, 1999	Feb 10, 2004
128	M & J Energy, Inc.	11	11	0	7	May 15, 2000	Sep 23, 2011
129	Costilla Petroleum Corporation	11	11	0	3	Jun 9, 1995	Mar 1, 1996
130	BVX Operating, Inc.	11	11	0	1	Jun 16, 2011	Dec 10, 2015
131	Great Western Drilling Company	11	11	0	0	Jun 29, 1979	Sep 14, 2004
132	Marline Petroleum Corporation	11	11	0	0	Dec 29, 1983	Jan 23, 1985
133	Trisearch Inc.	11	11	0	0	Jun 27, 1989	Jan 4, 1990
134	Sahara Operating Company	10	10	0	8	Jan 11, 1994	Oct 11, 2012
135	Denbury Management, Inc.	10	10	1	3	Apr 8, 1992	Jul 27, 1994
136	Buchanan, Wayman W.	10	10	0	2	Sep 28, 1977	Nov 28, 1979
137	Alta Energy Corporation	10	10	0	0	Sep 30, 1986	Feb 17, 1988
138	Empire Oil & Gas Co.	10	10	0	0	Nov 1, 1979	Feb 14, 1986
139	Henry Resources LLC	10	10	0	0	Feb 26, 2010	Oct 30, 2012
140	Jamex, Inc.	10	10	0	0	Jan 9, 2013	Jul 1, 2013
141	Maralo, Inc.	10	10	0	0	Apr 3, 1989	Mar 20, 1998
142	Petroleum Corporation of Texas	10	10	0	0	Feb 26, 1979	Dec 31, 1980
143	Phillips Oil Company	10	10	0	0	Nov 26, 1979	Jul 26, 1985
144	Phoenix Hydrocarbons, Inc.	10	10	0	0	Jul 28, 1988	Jun 12, 1991
145	Acoma Operating, LLC	9	9	0	212	Jan 21, 2022	Feb 27, 2023
146	OXY Low Carbon Ventures, LLC	9	9	2	10	Feb 15, 2024	Aug 19, 2024
147	Blair, Jack N.	9	9	0	4	Nov 5, 1980	Oct 1, 1982
148	Mewbourne Oil Company	9	9	9	4	Jan 6, 2014	Oct 1, 2025
149	Grand Banks Energy Company	9	9	0	3	Jul 21, 1982	Mar 2, 1983
150	Viking Energy Corporation	9	9	0	2	Apr 11, 1978	May 8, 1986
151	Baytech, Inc.	9	9	0	1	Mar 3, 1987	May 10, 1991
152	Boyd, D. K. Oil and Gas Co.,inc.	9	9	0	0	Dec 10, 1992	Mar 29, 1995
153	Cody Energy LLC	9	9	0	0	Oct 8, 1999	Jul 9, 2004
154	Davcro Inc.	9	9	0	0	Jun 2, 1992	Aug 9, 1994
155	Haylan Oil Company	9	9	0	0	Jan 24, 1984	Sep 24, 1993
156	Jones, Charles E., Jr.	9	9	0	0	Nov 22, 1978	Nov 18, 1997
157	O'Ryan Oil and Gas	8	8	0	52	Feb 29, 1996	Dec 5, 2017
158	Sundown Energy LP	8	8	0	15	Oct 1, 2015	May 2, 2017
159	Henderson, Bryan, Co.	8	8	0	13	Mar 28, 1978	Sep 27, 2023
160	Hendrix, John H. Corp.	8	8	0	10	Jun 22, 1978	Dec 31, 1981
161	Mobil Producing TX. & N.M. Inc.	8	8	0	3	Apr 30, 1980	Nov 1, 1990
162	Cabal Energy Corporation	8	8	0	2	Jun 23, 2004	Jan 23, 2007
163	Texon Oil Company, Inc.	8	8	0	2	Feb 18, 1994	Mar 12, 2008
164	Edwards-Foster, Inc.	8	8	1	1	Dec 4, 1992	May 9, 1994
165	Admiral Permian Operating LLC	8	8	8	0	Oct 20, 2025	Oct 27, 2026
166	Baruch-Foster Corporation	8	8	0	0	Apr 20, 1979	May 8, 1991
167	Cambrian Management Ltd	8	8	0	0	Apr 29, 2003	Jul 27, 2006
168	Heck Exploration Company	8	8	0	0	Sep 28, 1984	May 1, 1986
169	Maynard Oil Co.	8	8	0	0	Dec 14, 2000	Apr 14, 2004
170	Sharp Energy Partners, LLC	8	8	8	0	Sep 3, 2025	Oct 7, 2025
171	White Rock Oil & Gas, LLC	8	8	0	0	Aug 22, 2016	Dec 31, 2018
172	Par Development	7	7	0	19	May 1, 2006	Nov 30, 2012
173	Olsen Energy Inc.	7	7	0	11	Jul 20, 1979	May 20, 1987
174	Fivestones Energy LLC	7	7	0	8	Sep 19, 2023	May 22, 2024
175	Rim Operating, Inc.	7	7	0	7	Jul 5, 1995	Sep 6, 2012
176	Davis Southern Operating Co LLC	7	7	0	5	Jul 21, 2023	Aug 19, 2026
177	Colter Operating, Inc.	7	7	0	4	Aug 8, 1988	Sep 20, 1989
178	Rasmussen, James W.	7	7	0	2	Jun 30, 1977	Jan 31, 1985
179	Condor Operating Co.	7	7	0	1	Mar 26, 1992	Jul 5, 2002
180	Forest Oil Permian Corporation	7	7	0	1	Jun 25, 2004	Aug 4, 2004
181	B A Operators, Inc.	7	7	0	0	Dec 12, 1980	Jul 27, 1983
182	Samedan Oil Corporation	7	7	0	0	Feb 26, 1985	May 13, 1986
183	Eastland Oil Company, The	6	6	0	11	Aug 19, 1987	Oct 14, 1988
184	Cuervo, Inc.	6	6	0	8	Oct 18, 1999	Jan 27, 2017
185	Bennett, R. C., Company	6	6	0	7	Jul 12, 1982	May 18, 1984
186	Thompson, J. Cleo	6	6	0	3	Nov 28, 1977	Dec 13, 1994
187	Kaspar, A. G.	6	6	0	2	Aug 13, 1980	Dec 22, 1981
188	Merit Energy Company	6	6	0	2	Sep 12, 1996	Oct 17, 2006
189	Alto Minerals, Inc.	6	6	0	1	Jul 14, 1999	Nov 21, 2003
190	B & B Production Co	6	6	0	1	Oct 5, 1982	Feb 3, 2000
191	Terra Resources, Inc.	6	6	0	1	Aug 12, 1986	Dec 15, 1987
192	First Permian, L.L.C.	6	6	0	0	Jul 21, 2000	Jul 11, 2001
193	Magruder, Elaine Operating Co.	6	6	0	0	Oct 29, 1984	Mar 7, 1986
194	Mammoth Exploration LLC	6	6	3	0	Sep 19, 2018	May 6, 2019
195	Probity Operating, LLC	6	6	0	0	Feb 28, 2011	Nov 19, 2012
196	Rial Oil Co.	6	6	0	0	Aug 21, 1979	Jul 3, 1980
197	Stanolind Operating LLC	6	6	0	0	Apr 19, 2013	Nov 7, 2014
198	Tmbr/Sharp Drilling, Inc.	6	6	0	0	Sep 10, 1987	Jul 11, 1996
199	Aghorn Operating, Inc.	5	5	0	2,026	Apr 21, 2010	Aug 27, 2024
200	Octane Energy Operating, LLC	5	5	5	61	Feb 28, 2023	Apr 3, 2023
201	Shenandoah Oil Corp.	5	5	0	9	Feb 7, 1978	Jul 10, 1978
202	V-F Petroleum Inc.	5	5	0	5	May 24, 1978	May 13, 2014
203	Breck Operating Corp.	5	5	0	4	Aug 26, 2004	Nov 15, 2005
204	Zarvona Energy LLC	5	5	5	3	Jun 7, 2018	Jan 24, 2020
205	Devon Energy Corporation(nevada)	5	5	0	2	Mar 24, 1993	Jul 19, 1993
206	R. K. G. Engineering, Inc.	5	5	0	2	Mar 2, 1990	Jun 23, 1993
207	Crown Central Petroleum Corp.	5	5	0	1	May 1, 1979	May 8, 1986
208	Kirby, Jack L.	5	5	0	1	Nov 23, 1982	Aug 9, 1983
209	PDC Energy	5	5	0	1	Feb 23, 2011	Apr 11, 2011
210	Chesapeake Operating, Inc.	5	5	0	0	Jun 9, 2006	Oct 6, 2009
211	Citgo Pipeline Company	5	5	0	0	Dec 18, 1990	Dec 17, 1992
212	Cody Energy, Inc.	5	5	0	0	Nov 4, 1993	Sep 26, 1997
213	Edwards Exploration Company	5	5	0	0	Jun 23, 1983	Nov 21, 1983
214	Holly Energy Partners-OP, L.P.	5	5	0	0	Jun 17, 2010	Aug 13, 2019
215	Karico GP, LLC	5	5	2	0	Jun 2, 2016	Jun 3, 2016
216	McClure Oil Company, Inc.	5	5	0	0	Nov 6, 1996	Aug 19, 1997
217	Midenergy Operating, LLC	5	5	0	0	Sep 14, 2010	May 23, 2012
218	Osceola Oil & Gas Corporation	5	5	0	0	Oct 30, 1989	Oct 18, 1991
219	Quanah Petroleum Inc.	5	5	0	0	Aug 5, 1982	Oct 4, 1983
220	Rendova Oil Company, Inc.	5	5	0	0	Mar 16, 1992	Jul 25, 2000
221	Windsor Energy Group, L.L.C.	5	5	0	0	Apr 21, 2008	Mar 9, 2010
222	Satanta Oil Company	4	4	0	27	May 24, 1999	Apr 18, 2016
223	Raptor Petroleum Develop, LLC	4	4	1	18	Apr 19, 2017	Apr 15, 2019
224	Brown, H. L., Jr.	4	4	0	9	Jun 7, 1982	Nov 7, 1996
225	Deep Blue Operating I LLC	4	4	0	7	Jun 20, 2024	Sep 8, 2025
226	Jones, Johnny G.	4	4	0	4	May 28, 1981	Dec 3, 1981
227	Yucca Energy, Inc.	4	4	0	4	Dec 9, 1992	Dec 13, 1999
228	Ausland Production Company	4	4	0	2	Jun 1, 1993	Apr 30, 1996
229	Baxter, D. B. Inc.	4	4	0	2	Mar 10, 1997	Jun 5, 1998
230	Costilla Energy, Inc.	4	4	1	2	Mar 3, 1997	Aug 28, 1998
231	Seaboard Oil Company	4	4	0	2	Feb 20, 1996	Mar 21, 1997
232	Adena Exploration, Inc.	4	4	0	1	Dec 22, 1982	Feb 7, 1984
233	Holt, Robert B.	4	4	0	1	Apr 9, 1980	Jul 12, 1985
234	Meridian Oil Inc.	4	4	0	1	Mar 2, 1988	Jul 25, 1996
235	Phoenix Hydrocarbons Operating	4	4	0	1	Oct 31, 1991	May 16, 2003
236	Atmos Energy,west Texas Division	4	4	0	0	Feb 25, 2009	Feb 20, 2026
237	BHB Operating Inc.	4	4	0	0	Mar 14, 2012	Mar 14, 2012
238	Big "6" Drilling Company	4	4	0	0	Dec 9, 1981	Nov 12, 1999
239	Central Texas Oil & Gas	4	4	0	0	Apr 6, 1987	Aug 12, 1987
240	Dallas Production, Inc.	4	4	0	0	Nov 5, 1990	Nov 23, 1994
241	Flag-Redfern Oil Company	4	4	0	0	Jun 13, 1979	Sep 21, 1987
242	Martin Foree Operating, LLC	4	4	0	0	Nov 19, 2019	Nov 19, 2019
243	McDonnold Operating, Inc.	4	4	4	0	Sep 3, 2025	Sep 3, 2025
244	Memorial Production Oper. LLC	4	4	0	0	Jun 11, 2013	Jun 11, 2013
245	Miller Exploration Company	4	4	0	0	Jun 24, 1977	Sep 26, 1978
246	Plains Petroleum Operating Co.	4	4	0	0	Nov 20, 1991	Jun 11, 1992
247	Rexene Products Company	4	4	0	0	Jan 8, 1990	Jun 29, 1992
248	Sunray Energy, Inc.	4	4	0	0	Dec 4, 1995	Sep 26, 2012
249	Pfog Operations, LLC	3	3	0	22	Mar 14, 2012	Mar 14, 2012
250	Shinnery Oil Company, Inc.	3	3	0	9	May 14, 1990	May 15, 1990
251	Incline Energy	3	3	0	5	May 23, 2003	Aug 31, 2017
252	Adventure Operating Company, LLC	3	3	2	4	Jan 20, 2017	Jan 24, 2017
253	Permian Resources, Inc.	3	3	0	3	May 6, 2002	Sep 9, 2003
254	Rhonda Operating Co.	3	3	0	3	Jul 3, 1981	Jul 31, 1987
255	W & W Oil Company M	3	3	0	3	Oct 18, 1984	Dec 9, 1987
256	Contango Resources, LLC	3	3	1	2	May 17, 2014	Jun 7, 2022
257	Cox, John L.	3	3	0	2	Sep 8, 1978	Sep 3, 1993
258	Hannon, Charles E.	3	3	0	2	Jul 14, 1980	Sep 9, 1983
259	Marshall & Winston, Inc.	3	3	0	2	Sep 9, 1985	Nov 3, 1986
260	Paloma Exploration Co.	3	3	0	2	Jan 22, 1982	Aug 9, 1988
261	Stickney, F. C., Inc.	3	3	0	2	Mar 23, 1993	Oct 14, 1993
262	Adobe Resources Corporation	3	3	0	1	May 23, 1989	Nov 30, 1989
263	Anschutz Corporation, The	3	3	0	1	Dec 17, 1981	Aug 11, 1988
264	Burleson, Lewis B. Inc.	3	3	0	1	Feb 4, 1998	Apr 17, 2000
265	Griffin Petroleum Company	3	3	0	1	Nov 3, 1997	May 5, 2005
266	Munn, W. H. Operating Company	3	3	0	1	Nov 26, 1984	Sep 30, 1985
267	Odessa Exploration, Inc.	3	3	0	1	Nov 26, 1985	Jun 30, 1986
268	Alpha Twenty-One Production Co.	3	3	0	0	Apr 24, 1985	Sep 25, 1986
269	Alps Oil Company	3	3	0	0	Jul 21, 1993	Sep 7, 1993
270	American Petrofina Pipe Line Co.	3	3	0	0	Feb 22, 1990	Feb 23, 1990
271	Amerind Oil Co.	3	3	0	0	Dec 10, 1981	Nov 20, 1989
272	Andover Oil Company	3	3	0	0	Jun 23, 1981	Feb 25, 1982
273	Antelope Production Co.	3	3	1	0	Jan 31, 1991	Jul 7, 1994
274	Atmos Energy Corp., Mid-Tex Div.	3	3	0	0	Dec 22, 2022	Dec 22, 2022
275	Big Star Oil & Gas, LLC	3	3	0	0	Jun 11, 2010	May 27, 2014
276	Cambrian Management, Ltd.	3	3	0	0	Oct 15, 2021	Oct 15, 2021
277	Cola Petroleum, Inc.	3	3	0	0	Jul 6, 1978	Jan 8, 1979
278	Crump Petroleum Corporation	3	3	0	0	Mar 21, 1988	Sep 26, 1988
279	Des Desert Energy Services LLC	3	3	0	0	Jun 14, 2014	Mar 3, 2015
280	Dillon, H. L., Jr.	3	3	0	0	Nov 21, 1983	Oct 9, 1984
281	El Paso Natural Gas Co.	3	3	0	0	Dec 7, 1988	May 2, 1994
282	Enterprise Products Operatingllc	3	3	0	0	Jul 26, 2011	Oct 14, 2026
283	Fuller Production, Inc.	3	3	0	0	Oct 16, 2008	Apr 21, 2011
284	Gruy Petroleum Management Co.	3	3	0	0	Jun 7, 2001	Jul 3, 2001
285	Mexco Energy Corporation	3	3	0	0	Dec 13, 1994	Dec 13, 1994
286	Pyote Water Systems II, LLC	3	3	0	0	Apr 26, 2011	Mar 14, 2012
287	Quantum Resources Management,llc	3	3	0	0	May 5, 2011	May 5, 2011
288	Texland-Rector & Schumacher	3	3	0	0	Jul 27, 1998	May 15, 2000
289	Tri-Service Drilling Co.	3	3	0	0	Apr 27, 1978	Jun 19, 1978
290	Turrentine Oil and Gas, Inc.	3	3	0	0	Sep 13, 2002	Jul 30, 2004
291	Vann Energy, Inc.	3	3	0	0	Oct 12, 1979	Apr 25, 1980
292	Basin Oil & Gas Operating, LLC	2	2	0	28	Jul 17, 2026	Oct 21, 2026
293	Grama Operating, LLC	2	2	0	10	Apr 20, 2023	Apr 20, 2023
294	Amerada Hess Corporation	2	2	0	9	Aug 29, 1978	Dec 6, 1978
295	Cities Service Oil Co.	2	2	0	9	Jun 23, 1977	Jun 30, 1977
296	Hawk, Bob Oil Operator	2	2	0	8	Jul 19, 1988	Jul 13, 1989
297	Texas American Oil Corp.	2	2	0	7	Dec 31, 1981	Apr 9, 1985
298	Basin Well Service of Odessa,inc	2	2	0	5	Feb 20, 2004	Oct 28, 2005
299	Petroplex Energy Inc.	2	2	0	5	Sep 9, 2011	Sep 9, 2011
300	Pitts Energy Co.	2	2	0	4	May 27, 1986	May 19, 2021

739 OPERATORS · THE 300 MOST ACTIVE SHOWN · WINDOW ON THE RRC ISSUE DATE