COUNTIES · HEMPHILL · OPERATORS

Hemphill 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	Unit Petroleum Company	228	228	134	197	Jun 14, 1989	Dec 2, 2024
2	Samson Lone Star LP	226	226	1	0	Apr 22, 1998	Jun 14, 2007
3	Laredo Petroleum, Inc.	194	194	15	1	Oct 31, 2007	Jan 22, 2013
4	Forest Oil Corporation	192	192	34	6	Mar 30, 2005	Sep 5, 2013
5	Dominion Oklahoma Texas E&P, Inc	178	178	0	3	Dec 5, 2001	Aug 9, 2007
6	Mewbourne Oil Company	167	167	93	145	Apr 20, 1981	Sep 28, 2026
7	Noble Energy Production, Inc.	167	167	0	0	Jul 2, 2004	Aug 24, 2007
8	Cimarex Energy Co.	157	157	32	17	Feb 27, 1978	Aug 15, 2014
9	Patina Oil & Gas Corporation	156	156	0	0	Jan 28, 2003	May 26, 2005
10	Le Norman Operating LLC	149	149	148	22	Jan 20, 2011	Aug 23, 2018
11	Apache Corporation	125	125	78	65	Jan 4, 1978	Jun 26, 2017
12	Chesapeake Operating, Inc.	124	124	72	14	Feb 8, 1996	Aug 26, 2013
13	Diamond Chemicals Company	117	117	0	41	Jun 13, 1977	May 4, 1983
14	Devon Energy Production Co, L.P.	113	113	63	45	Oct 5, 2000	May 6, 2015
15	Samson Lone Star, LLC	111	111	44	17	Aug 15, 2006	Dec 10, 2014
16	Bracken Operating, L.L.C.	78	78	0	63	Apr 5, 1996	Nov 10, 2022
17	Peak Operating of Texas, LLC	77	77	0	0	Jul 2, 2003	Apr 25, 2005
18	Gulf Oil Corp.	72	72	0	12	Aug 3, 1977	Jun 28, 1985
19	Kerr-McGee Corporation	71	71	0	17	Jul 13, 1977	Jun 24, 1994
20	Cordillera Texas, L.P.	64	64	2	0	May 9, 2006	Sep 16, 2008
21	Kaiser-Francis Oil Company	57	57	0	26	Dec 31, 1979	Jun 19, 2009
22	Granite Operating Company	52	52	9	6	Jan 7, 2008	Apr 20, 2012
23	Phillips Petroleum Company	48	48	0	19	Apr 7, 1978	Feb 15, 2002
24	Midgard Energy Company	47	47	0	23	Dec 22, 1994	Oct 31, 1997
25	Jones Energy, LLC	46	46	46	5	Dec 13, 2011	Oct 23, 2015
26	Bravo Natural Resources, Inc.	44	44	0	0	Jan 28, 2000	Jan 4, 2004
27	BP America Production Company	42	42	21	107	Feb 16, 2000	Jan 15, 2016
28	Cordillera Energy Prtnrs Iii,llc	42	42	13	0	Aug 10, 2007	Jun 8, 2012
29	Diamond Shamrock Exploration Co.	41	41	0	7	Feb 13, 1984	Mar 12, 1987
30	Samson Contour Energy E&P, LLC	39	39	0	0	May 23, 2006	Oct 1, 2008
31	Latigo Petroleum Texas, LP	38	38	0	1	Mar 9, 2004	Feb 3, 2009
32	Range Production Company	38	38	0	0	Mar 5, 2001	Aug 31, 2010
33	Dyco Petroleum Corporation	37	37	0	7	Mar 13, 1978	Jun 30, 1992
34	Upland Resources, Inc.	36	36	0	7	Jan 30, 1995	May 15, 2007
35	Linn Operating, Inc.	36	36	11	3	Dec 14, 2006	Aug 30, 2013
36	Questar Expl. and Prod. Co.	36	36	0	3	Jun 24, 1999	Aug 1, 2006
37	Cimarex Energy Co. of Colorado	34	34	18	22	Jan 11, 1996	Jun 30, 2015
38	Pablo Energy, Inc.	34	34	0	1	Jul 10, 1995	Dec 9, 2005
39	Enron Oil & Gas Company	33	33	0	10	Mar 11, 1987	Jun 10, 1999
40	Crescendo Resources, L.P.	32	32	0	19	Nov 4, 1981	Dec 23, 1999
41	McCulloch Oil Corp. of Texas	32	32	0	0	Jul 20, 1977	Oct 1, 1980
42	Amoco Production Company	31	31	0	25	Apr 29, 1980	Sep 12, 2001
43	Maxus Exploration Company	31	31	0	21	Dec 31, 1982	Dec 27, 1994
44	Tecolote Energy Operating, LLC	31	31	31	16	Dec 21, 2016	Mar 27, 2019
45	Slawson, Donald C.	31	31	0	5	Jun 22, 1977	Apr 14, 1986
46	Woods Petroleum Corporation	31	31	0	1	Oct 25, 1979	Jun 29, 1990
47	Brigham Oil & Gas, L.P.	30	30	0	5	Mar 18, 1997	May 3, 2006
48	Mobil Producing TX. & N.M. Inc.	29	29	0	17	Dec 10, 1979	Apr 17, 1995
49	Chevron U. S. A. Inc.	28	28	0	25	Nov 18, 1986	Sep 16, 2010
50	EOG Resources, Inc.	27	27	1	4	Oct 14, 1999	Apr 16, 2013
51	Latigo Petroleum, Inc.	25	25	22	0	Jul 2, 2009	Aug 29, 2011
52	Philcon Development Co.	24	24	0	12	Jul 8, 1977	Oct 31, 2007
53	Anadarko Production Company	24	24	0	2	Aug 16, 1977	Feb 6, 1985
54	Jones Energy, Ltd.	24	24	24	0	Feb 22, 2008	May 7, 2012
55	TXO Production Corp.	23	23	0	1	Dec 10, 1981	Apr 30, 1990
56	Hoover & Bracken Energies, Inc.	22	22	0	3	Jun 22, 1977	Jan 6, 1981
57	Noble Energy Inc	22	22	5	3	Feb 15, 2006	May 16, 2011
58	El Paso Production Company	22	22	0	0	Jun 12, 2000	Feb 12, 2003
59	Newfield Expl. Mid-Con. Inc	22	22	1	0	Aug 9, 2001	Feb 9, 2005
60	B & W Operating, L.L.C.	21	21	0	0	Oct 16, 2003	Aug 9, 2007
61	Devon Louisiana Corporation	21	21	1	0	Jun 10, 2003	Jul 6, 2005
62	Upland Resources LLC	20	20	11	73	Jun 27, 2012	Oct 11, 2021
63	Sun Exploration & Production Co.	20	20	0	12	Aug 29, 1977	Dec 28, 1987
64	Anadarko Petroleum Corp.	19	19	0	5	Apr 24, 1978	Aug 19, 1996
65	MCR Oil Corporation of Texas	19	19	0	2	Sep 3, 1980	Aug 17, 1984
66	Moody Energy Co.	19	19	0	2	Apr 17, 1979	Dec 6, 1982
67	Samson Resources Company	18	18	0	5	Apr 30, 1981	Mar 21, 1995
68	Cambridge & Nail	18	18	0	3	Apr 19, 1978	Oct 27, 1982
69	Marsh Operating Company	18	18	0	3	Jul 29, 1987	Jul 19, 1994
70	Bracken Energy Company	18	18	0	1	Mar 16, 1987	Dec 7, 1995
71	Helmerich & Payne, Inc.	18	18	0	1	Sep 28, 1978	Jul 23, 2002
72	Tenneco Oil Co.	18	18	0	0	Oct 27, 1977	Aug 9, 1984
73	Courson Oil & Gas, Inc.	17	17	0	2	May 24, 1978	Nov 20, 2002
74	Abraham, Malouf Inc.	17	17	0	1	Feb 19, 1982	Feb 9, 1990
75	Alpar Resources, Inc.	16	16	0	4	Apr 3, 1978	Apr 10, 1997
76	Exxon Corp.	16	16	0	2	Oct 13, 1977	Apr 29, 1982
77	Pioneer Production Corp.	15	15	0	3	May 24, 1978	Sep 26, 1983
78	Shell Oil Company	15	15	0	1	Nov 30, 1977	Feb 1, 1983
79	4P Energy Texas, LLC	14	14	14	14	Aug 13, 2014	Sep 4, 2018
80	Devon Energy Corporation(nevada)	14	14	0	1	Jan 21, 1997	Dec 27, 1999
81	Gruy Petroleum Management Co.	14	14	0	0	Oct 10, 2005	May 3, 2006
82	Conocophillips Company	13	13	9	14	Oct 9, 2002	Feb 2, 2015
83	Internorth, Inc.	13	13	0	2	Jun 17, 1980	Sep 12, 1984
84	Umc Petroleum Corporation	13	13	0	0	Apr 13, 1990	Aug 1, 1996
85	Smith, Earl T. & Assoc., Inc.	12	12	0	5	Oct 26, 1977	Jan 25, 1984
86	Zephyr Lone Star Oper Co.,l.l.c.	12	12	0	3	May 8, 1997	Oct 28, 2009
87	El Paso Natural Gas Co.	12	12	0	2	Jul 3, 1978	Nov 5, 1987
88	Sonat Exploration Company	12	12	0	1	Jan 25, 1990	Jun 27, 1995
89	Blackbeard Operating, LLC	11	11	10	47	Jan 14, 2019	Sep 11, 2023
90	Enervest Operating, L.L.C.	11	11	3	8	Apr 10, 2000	Mar 6, 2026
91	Hamon, Jake L.	11	11	0	7	Sep 11, 1978	Dec 31, 1982
92	HNG Oil Company	11	11	0	2	Feb 10, 1978	Nov 22, 1982
93	Petroleum Inc.	11	11	0	2	Jul 5, 1979	Apr 30, 1990
94	Mesa Petroleum Co.	11	11	0	1	Dec 22, 1977	Feb 8, 1985
95	Wagner & Brown	11	11	0	1	May 22, 1981	Aug 9, 1984
96	Union Oil Company of California	11	11	0	0	Aug 8, 1978	Sep 13, 1995
97	Corlena Oil Company	10	10	5	5	Aug 19, 1993	Apr 2, 2013
98	Canyon Exploration Co.	10	10	0	4	Apr 7, 1994	Jun 18, 1998
99	Burlington Resources Oil&gas Co.	10	10	0	1	Dec 12, 1977	Nov 14, 1997
100	E. T. S. Enterprises, Inc.	10	10	0	1	Jan 24, 1979	Aug 9, 1989
101	Parker & Parsley Development L.P	10	10	0	0	Jan 17, 1996	Aug 7, 1997
102	Strat Land Exploration Company	9	9	0	3	Jan 24, 1992	Jun 12, 2013
103	Bracken Exploration Company	9	9	0	0	Nov 4, 1981	Jul 9, 1985
104	Rio Petroleum, Inc.	8	8	0	3	Jul 15, 1980	Sep 19, 1997
105	Dorchester Exploration, Inc.	8	8	0	1	Oct 17, 1977	Feb 3, 1984
106	Mer Resources	8	8	0	0	Dec 23, 1985	Dec 10, 2003
107	Meridian Oil Inc.	7	7	0	5	Aug 1, 1989	May 20, 1996
108	Crest Resources, Inc.	7	7	0	2	Jan 13, 2003	Dec 8, 2008
109	Monsanto Company	7	7	0	1	Aug 1, 1977	Jul 15, 1981
110	Universal Resources Corp.	7	7	0	1	Nov 17, 1992	Apr 1, 1999
111	Cox, Edwin L.	7	7	0	0	Oct 19, 1977	Feb 23, 1984
112	Ocean Energy, Inc.	7	7	0	0	Jul 14, 1998	May 27, 2003
113	Payne, W. C.	7	7	0	0	Nov 8, 1982	Jan 27, 2004
114	PN Resources, Inc.	7	7	0	0	Feb 12, 2003	Apr 22, 2003
115	Questa Energy Corporation	6	6	4	13	Apr 2, 1996	Jun 21, 2018
116	Pogo Producing Co.	6	6	0	2	Jul 25, 1979	Jul 19, 1983
117	Cotton Petroleum Corp.	6	6	0	1	Aug 4, 1977	Sep 2, 1983
118	Asher Resources	6	6	0	0	Jun 18, 1993	Mar 21, 2007
119	Hamilton Brothers Oil Co.	6	6	0	0	Dec 13, 1979	Nov 10, 1982
120	Pennzoil Petroleum Company	6	6	0	0	Jul 28, 1993	Aug 4, 1993
121	Spring Resources, Inc.	6	6	0	0	Feb 13, 1998	Apr 15, 1999
122	Unit Drilling & Expl. Co.	6	6	0	0	Jun 3, 1983	Nov 17, 1987
123	Amarex, Inc.	5	5	0	2	Aug 8, 1977	Nov 13, 1985
124	Suoco Oil Corp.	5	5	0	2	Jul 27, 1978	Apr 6, 1998
125	H & L Operating Company	5	5	0	1	Apr 11, 1989	Aug 18, 1998
126	Napeco, Inc.	5	5	0	1	Aug 14, 1978	Feb 20, 1980
127	American Public Energy Co.	5	5	0	0	Aug 24, 1977	Apr 4, 1979
128	Barrett Resources Corporation	5	5	0	0	Apr 15, 1997	Oct 22, 1998
129	El Paso Exploration Co.	5	5	0	0	Dec 14, 1981	Jun 5, 1985
130	Ensource Inc.	5	5	0	0	Mar 21, 1985	Jun 18, 1985
131	Marsh, Tom F. Inc.	5	5	0	0	Apr 20, 1979	Nov 2, 1984
132	Naumann Oil & Gas, Inc.	5	5	0	0	Dec 7, 1994	Aug 16, 2004
133	Protege Energy LLC	5	5	0	0	Sep 7, 2006	Nov 5, 2007
134	Sabine Oil & Gas LLC	5	5	5	0	Nov 1, 2012	Aug 9, 2013
135	Santa FE Minerals, Inc.	5	5	0	0	Oct 6, 1983	Feb 11, 1985
136	St. Johns Operating #1 L.P.	5	5	0	0	Aug 29, 2000	Aug 19, 2002
137	Tri-EX Petroleum, L.P.	5	5	0	0	Nov 12, 2002	Jul 20, 2004
138	Wallace Oil & Gas, Inc.	5	5	0	0	Oct 20, 1993	Sep 29, 1994
139	Mmgl Txph, LLC	4	4	0	913	Apr 9, 2025	Dec 5, 2025
140	Overflow Energy, LLC	4	4	0	10	May 18, 2011	Nov 7, 2013
141	J-Brex Company	4	4	0	9	Oct 13, 1993	Sep 3, 2003
142	Sidwell Oil & Gas, Inc.	4	4	0	2	Nov 30, 1987	Sep 24, 1999
143	Taylor, John A.	4	4	0	2	Jan 2, 1980	Jul 31, 1981
144	Cory, Kenneth W. Ltd.	4	4	0	1	Jun 17, 2005	Nov 2, 2010
145	K. Stewart Petroleum Corporation	4	4	0	1	Mar 3, 1997	Jan 13, 1999
146	Monsanto Oil Company	4	4	0	1	Aug 28, 1984	Feb 20, 1986
147	Plains Exploration & Prod. Co.	4	4	4	1	Feb 9, 2011	Oct 31, 2011
148	Prize Operating Company	4	4	0	1	Apr 24, 2000	Nov 13, 2000
149	Sanguine, Ltd	4	4	0	1	Jul 6, 1994	Dec 9, 1998
150	Sonat Exploration Company-MCR	4	4	0	1	Jun 9, 1995	Oct 29, 1997
151	B & B Operating, L.P.	4	4	0	0	Jul 31, 2006	Oct 17, 2007
152	Davis Oil Company	4	4	0	0	Oct 17, 1977	Dec 7, 1983
153	Dreyfus, Louis Natural Gas Corp	4	4	0	0	May 12, 2000	Oct 15, 2001
154	Enserch Exploration, Inc	4	4	0	0	Feb 14, 1983	Jun 17, 1985
155	Gruenerwald,william &assoc.,inc.	4	4	0	0	Dec 8, 1977	Jan 10, 1991
156	Meridian Oil Production Inc.	4	4	0	0	Jan 7, 1986	Aug 10, 1995
157	Mustang Production Company	4	4	0	0	Apr 1, 1985	Dec 16, 1987
158	Page Petroleum Inc.	4	4	0	0	Aug 10, 1977	Apr 2, 1981
159	Roden Oil Company	4	4	0	0	Oct 22, 1984	Jul 25, 1985
160	Southwestern Energy Prod. Co.	4	4	0	0	Sep 15, 1994	Oct 29, 1997
161	Presidio Petroleum LLC	3	3	0	953	Oct 22, 2019	Jan 8, 2020
162	Sundown Energy, Inc.	3	3	0	3	May 12, 2000	Apr 2, 2004
163	BHP Petroleum Company Inc.	3	3	0	1	Mar 5, 1987	Nov 29, 1988
164	Chaparral Energy, L.L.C.	3	3	3	1	Mar 6, 2012	Nov 8, 2012
165	Seagull Midcon Inc.	3	3	0	1	Sep 13, 1996	Dec 13, 1996
166	Snyder Partners	3	3	0	1	Apr 21, 2004	Oct 2, 2012
167	Wolf Creek Exploration Company	3	3	0	1	Jul 17, 1990	Nov 29, 2000
168	Aikman Oil Corp.	3	3	0	0	Jul 9, 1990	Aug 2, 1991
169	Aikman Petroleum, Inc.	3	3	0	0	Jan 24, 1980	Sep 6, 1983
170	Arkla Exploration Co.	3	3	0	0	Dec 19, 1978	Aug 9, 1982
171	CNG Producing Company	3	3	0	0	Feb 25, 1985	Jan 14, 1986
172	Encore Operating, L.P.	3	3	0	0	Apr 14, 2005	Nov 2, 2005
173	Energy Resources Oil & Gas Corp.	3	3	0	0	Aug 25, 1981	Dec 31, 1981
174	Hadaway Consult and Engineer,llc	3	3	3	0	Mar 21, 2012	Feb 28, 2014
175	Inca Exploration Co.	3	3	0	0	Sep 14, 1978	Aug 9, 1979
176	Matador Operating Company	3	3	0	0	Nov 19, 1999	Jul 10, 2000
177	McOr Oil & Gas Corporation	3	3	0	0	Jun 25, 1984	Mar 28, 1989
178	MW Petroleum Corporation	3	3	0	0	Mar 7, 1996	Mar 3, 1997
179	Northern Natural Gas Co.	3	3	0	0	Aug 30, 1979	Jul 9, 1980
180	Post Petroleum Company	3	3	0	0	Jun 24, 1977	Dec 29, 1977
181	Seagull Energy E&P Inc.	3	3	0	0	Jul 30, 1998	Aug 31, 2000
182	Texas Oil & Gas Corp.	3	3	0	0	Nov 8, 1979	Jul 10, 1981
183	Wainoco Oil & Gas Company	3	3	0	0	Sep 21, 1979	Jun 2, 1981
184	North American Royalties, Inc.	2	2	0	4	Oct 26, 1978	Feb 4, 1987
185	Mobil Oil Corporation	2	2	0	3	Mar 16, 1978	Sep 26, 1978
186	Capstone Cactus Operating Comp.	2	2	0	2	Apr 30, 2009	Apr 30, 2009
187	Crawley Petroleum Corporation	2	2	0	2	May 7, 2002	Apr 13, 2006
188	B & B Farm Industries, Inc.	2	2	0	1	Mar 23, 1981	Jul 22, 1981
189	Eagle Oil & Gas Co.	2	2	0	1	Dec 18, 1984	Mar 19, 1985
190	Graham Royalty, Ltd.	2	2	0	1	Apr 12, 1990	Feb 11, 1993
191	HS Resources, Inc.	2	2	0	1	Mar 16, 1998	Mar 20, 1998
192	Natural Gas Anadarko, Inc.	2	2	0	1	Mar 9, 1978	Dec 3, 1981
193	Trigg Drilling Co., Inc.	2	2	0	1	Jun 4, 1981	Oct 5, 1981
194	Westland Oil Development Corp.	2	2	0	1	Dec 31, 1982	Feb 9, 1983
195	Abraham, Malouf Company, Inc.	2	2	0	0	Jun 16, 1978	Sep 22, 1978
196	Arco Oil & Gas Co.	2	2	0	0	Jul 11, 1979	Jul 11, 1979
197	Arnold Oil Properties, Inc.	2	2	0	0	Oct 5, 2004	Apr 11, 2006
198	Axis Energy Corporation	2	2	2	0	Feb 23, 2011	Jun 6, 2011
199	Brighton Energy, L.L.C.	2	2	0	0	Nov 1, 2004	May 23, 2005
200	Cities Service Company	2	2	0	0	Nov 14, 1977	Dec 2, 1977
201	Coenergy Operating Company	2	2	0	0	Oct 31, 1995	Dec 12, 1995
202	Cox, Edwin L. & Cox, Berry R.	2	2	0	0	Nov 2, 1981	Aug 10, 1982
203	Crown Energy Company	2	2	0	0	Nov 5, 1996	Sep 12, 1997
204	Crusader Energy Group, LLC	2	2	1	0	Mar 26, 2008	Jul 28, 2008
205	Daniels Energy Company	2	2	0	0	Apr 22, 1982	Sep 14, 1982
206	Ehvi Exploration, LLC	2	2	2	0	Oct 3, 2022	Apr 20, 2023
207	Gen. Amer. Oil Co. of Texas	2	2	0	0	Jul 13, 1977	Aug 3, 1977
208	Grayhawk Operating, Inc.	2	2	0	0	Apr 10, 2006	Dec 7, 2006
209	Hadson Petroleum Corporation	2	2	0	0	Jun 12, 1981	Sep 17, 1981
210	Hawkins Oil & Gas, Inc.	2	2	0	0	Sep 10, 1985	Sep 25, 1985
211	Highmount Operating LLC	2	2	2	0	Apr 27, 2012	May 30, 2012
212	H & L Operating Co., L.L.P.	2	2	0	0	May 12, 1999	Oct 21, 2005
213	May Petroleum, Inc.	2	2	0	0	Dec 11, 1981	Dec 3, 1982
214	Moxie Disposal Systems, LLC	2	2	0	0	Oct 30, 2009	Oct 20, 2011
215	Plantation Operating, LLC	2	2	0	0	Oct 19, 2007	Oct 4, 2008
216	Post Petroleum Company, Inc	2	2	0	0	Feb 4, 1980	Aug 21, 1980
217	Ricks Exploration, Inc.	2	2	0	0	Aug 8, 1995	Apr 7, 1997
218	Statex Petroleum Inc.	2	2	0	0	Mar 11, 1980	Jun 13, 1980
219	Tide West Oil Company	2	2	0	0	Jan 25, 1996	Jun 7, 1996
220	Trans Terra Corp., International	2	2	0	0	Mar 30, 1994	Sep 9, 1994
221	Vaalco Energy (USA), Inc.	2	2	2	0	Mar 22, 2011	Sep 16, 2011
222	Vastar Resources, Inc.	2	2	0	0	Sep 2, 1999	Dec 2, 1999
223	Viersen & Cochran	2	2	0	0	Aug 31, 1987	Oct 7, 1987
224	Washita Oil and Gas, L.L.C.	2	2	0	0	Aug 15, 2002	Aug 9, 2004
225	Burlington Resources O & G Co LP	1	1	0	12	Feb 6, 2001	Feb 6, 2001
226	FX Energy Operating, LLC	1	1	0	8	Aug 10, 2026	Aug 10, 2026
227	Samedan Oil Corporation	1	1	0	3	Feb 21, 1978	Feb 21, 1978
228	Sand Springs Oil & Gas Co.	1	1	0	3	Mar 1, 2002	Mar 1, 2002
229	Sundown Energy LP	1	1	0	3	Feb 1, 2007	Feb 1, 2007
230	Barbour Energy Corporation	1	1	0	2	Sep 11, 2007	Sep 11, 2007
231	Crown Petroleum Corp.	1	1	0	2	Jun 18, 2008	Jun 18, 2008
232	Eagle Exploration Co., Inc.	1	1	0	2	Jun 2, 1989	Jun 2, 1989
233	Forestar Petroleum Corporation	1	1	1	2	Jun 6, 2014	Jun 6, 2014
234	Parallel Petroleum Corporation	1	1	0	2	Mar 5, 1991	Mar 5, 1991
235	BHP Petroleum (Americas) Inc.	1	1	0	1	Jan 4, 1988	Jan 4, 1988
236	Charter Oak Production Co., LLC	1	1	0	1	Oct 2, 2008	Oct 2, 2008
237	Cities Service Oil & Gas Corp.	1	1	0	1	Jul 16, 1986	Jul 16, 1986
238	Cobra Oil & Gas Corporation	1	1	0	1	Oct 22, 1981	Oct 22, 1981
239	Cordillera Energy Partners, LLC	1	1	0	1	Mar 14, 2003	Mar 14, 2003
240	Eagle Rock Mid-Continent OP, LLC	1	1	0	1	Apr 25, 2013	Apr 25, 2013
241	Grace Petroleum Corp.	1	1	0	1	Sep 20, 1978	Sep 20, 1978
242	Grand Resources, Inc.	1	1	0	1	Apr 10, 2003	Apr 10, 2003
243	Grimm, Jack F.	1	1	0	1	Apr 23, 1979	Apr 23, 1979
244	Hamon Oil Company	1	1	0	1	Apr 19, 1984	Apr 19, 1984
245	Horizon Oil & Gas Co.	1	1	0	1	Jul 16, 1985	Jul 16, 1985
246	Hydrocarbon Management, Inc.	1	1	0	1	Apr 23, 1996	Apr 23, 1996
247	JCB II Enterprises, LLC	1	1	0	1	Aug 26, 2013	Aug 26, 2013
248	OXY USA Inc.	1	1	0	1	Dec 8, 1993	Dec 8, 1993
249	Shell Western E&P Inc.	1	1	0	1	Dec 11, 1986	Dec 11, 1986
250	Turner Transportation	1	1	0	1	Feb 26, 2003	Feb 26, 2003
251	Twister Exploration, L.L.C.	1	1	0	1	Oct 27, 1999	Oct 27, 1999
252	American Quasar Petroleum Co.	1	1	0	0	May 8, 1978	May 8, 1978
253	Ana-Tok Operating Co., Inc.	1	1	0	0	Nov 14, 1997	Nov 14, 1997
254	Anderman/Smith Operating Company	1	1	0	0	Oct 31, 1985	Oct 31, 1985
255	Anson Company	1	1	0	0	Nov 8, 1996	Nov 8, 1996
256	AN-Son Corporation	1	1	0	0	Nov 5, 1980	Nov 5, 1980
257	Apexco, Inc.	1	1	0	0	Nov 30, 1977	Nov 30, 1977
258	Baker & Taylor Drilling Co.	1	1	0	0	Sep 28, 1977	Sep 28, 1977
259	Barbee, Bill J.	1	1	0	0	May 25, 1984	May 25, 1984
260	B & H Disposal Systems, LLC	1	1	0	0	Mar 15, 2011	Mar 15, 2011
261	Bloustine, Donald A. Co.	1	1	0	0	Dec 30, 1986	Dec 30, 1986
262	Buchanan, Wayman W.	1	1	0	0	Oct 28, 1980	Oct 28, 1980
263	Cleary Petroleum Corp.	1	1	0	0	Nov 9, 1977	Nov 9, 1977
264	Clements Energy, Inc.	1	1	0	0	Dec 11, 1979	Dec 11, 1979
265	Dantex Oil & Gas, Inc.	1	1	0	0	Dec 23, 1985	Dec 23, 1985
266	Derrick Exploration, Inc.	1	1	0	0	Jun 7, 1989	Jun 7, 1989
267	Douglas Petroleum, Inc.	1	1	0	0	Sep 7, 1982	Sep 7, 1982
268	Evmar Oil Corp	1	1	0	0	Jul 10, 1981	Jul 10, 1981
269	Fowler Petroleum Corporation	1	1	0	0	Dec 31, 1980	Dec 31, 1980
270	Gala Resources, Ltd.	1	1	0	0	Jul 22, 1994	Jul 22, 1994
271	Getty Oil Co.	1	1	0	0	May 26, 1978	May 26, 1978
272	Gulf Oil Chem.co/D. of Gulf O.cp	1	1	0	0	Jul 17, 1981	Jul 17, 1981
273	Hamilton Brothers Oil Co.	1	1	0	0	Aug 3, 1981	Aug 3, 1981
274	Highmount Expl & Prod Texas LLC	1	1	0	0	Sep 12, 2011	Sep 12, 2011
275	Imperial-American Energy, Inc.	1	1	0	0	Sep 16, 1977	Sep 16, 1977
276	JCR, Jr - Operating, Inc.	1	1	0	0	Sep 29, 1987	Sep 29, 1987
277	Jetta Operating Company, Inc.	1	1	0	0	Jan 23, 2003	Jan 23, 2003
278	Koch Pipeline Company, L.P.	1	1	0	0	Sep 29, 1995	Sep 29, 1995
279	Ladd Petroleum Corp.	1	1	0	0	Dec 23, 1983	Dec 23, 1983
280	Larkey, E. W. & Sons, Inc.	1	1	0	0	Jul 26, 1979	Jul 26, 1979
281	Lone Tree Oil & Gas LLC	1	1	0	0	May 5, 2022	May 5, 2022
282	Marsh, Tom F.	1	1	0	0	Jul 13, 1978	Jul 13, 1978
283	Maynard Oil Co.	1	1	0	0	Mar 30, 1988	Mar 30, 1988
284	Medallion Production Company	1	1	0	0	Dec 27, 1993	Dec 27, 1993
285	Meridian Oil Inc., Agent	1	1	0	0	Nov 20, 1986	Nov 20, 1986
286	Mesa Operating Ltd Partnership	1	1	0	0	Aug 2, 1990	Aug 2, 1990
287	Midwestern Exploration Co.	1	1	0	0	Dec 22, 1993	Dec 22, 1993
288	Oringderff, Alma Oil Properties	1	1	0	0	Jun 28, 2006	Jun 28, 2006
289	Pablo Energy, LLC	1	1	0	0	Sep 29, 2005	Sep 29, 2005
290	PA Prospect LLC	1	1	0	0	Jun 8, 2018	Jun 8, 2018
291	Petroleum, Inc./Amarillo Oil Co.	1	1	0	0	Aug 15, 1979	Aug 15, 1979
292	Pioneer Natural Res. USA, Inc.	1	1	0	0	May 21, 1997	May 21, 1997
293	Puma Exploration Company	1	1	0	0	Jun 22, 1983	Jun 22, 1983
294	Ramco Oil & Gas, Inc.	1	1	0	0	Dec 3, 1990	Dec 3, 1990
295	Red Eagle Oil Co.	1	1	0	0	Mar 19, 1987	Mar 19, 1987
296	R.E.D. Resources, Inc.	1	1	0	0	May 14, 1993	May 14, 1993
297	Regency Exploration, Inc.	1	1	0	0	Dec 31, 1980	Dec 31, 1980
298	Richardson,j.t.rig&const Co Inc	1	1	0	0	May 12, 1982	May 12, 1982
299	R & R Exploration & Production	1	1	0	0	Jan 10, 1992	Jan 10, 1992
300	Sanguine Gas Exploration, LLC	1	1	1	0	Mar 18, 2026	Mar 18, 2026

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