COUNTIES · COCHRAN · OPERATORS

Cochran 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	Mobil Producing TX. & N.M. Inc.	193	193	8	0	Aug 22, 1980	Jan 9, 2002
2	Monsanto Company	182	182	0	0	Oct 4, 1977	Jul 27, 1982
3	Exxon Corp.	122	122	0	1	Aug 20, 1985	Dec 14, 1993
4	Apache Corporation	110	110	17	0	Sep 2, 1986	Aug 4, 2014
5	United Company	83	83	0	34	Aug 18, 1977	Jul 8, 1986
6	Parker & Parsley, Wpi Agent	81	81	0	3	Jan 13, 1993	Mar 24, 1997
7	Layton Enterprises, Inc.	76	76	0	0	Aug 22, 1977	Nov 2, 1993
8	Getty Oil Co.	70	70	0	28	Sep 29, 1977	Feb 22, 1984
9	Walsh Petroleum, Inc.	68	68	11	24	Nov 19, 1997	Aug 4, 2014
10	Depco, Inc.	67	67	0	4	Sep 21, 1977	Mar 2, 1988
11	Tema Oil and Gas Company	64	64	1	5	Mar 26, 1999	Nov 4, 2015
12	Amoco Production Company	55	55	0	10	Sep 13, 1977	Dec 20, 1991
13	Woods Petroleum Corporation	50	50	0	6	May 28, 1980	Dec 18, 1984
14	Melton, Joe, Drlg. Co., Inc.	50	50	0	0	Mar 5, 1981	Sep 8, 1983
15	Monsanto Oil Company	44	44	0	116	Sep 6, 1983	Oct 19, 1984
16	Reef Exploration, L.P.	44	44	0	0	May 27, 2008	Jan 21, 2009
17	Texas City Refg. Inc.	43	43	0	30	Nov 21, 1977	May 22, 1984
18	Union Oil Company of California	42	42	0	27	Jan 4, 1978	Jul 13, 1994
19	Yucca Energy, Inc.	41	41	0	51	Aug 7, 1991	Sep 16, 2009
20	Element Petroleum OP III, LLC	38	38	28	0	Jul 13, 2016	Apr 2, 2019
21	Conoco Inc.	37	37	0	2	May 23, 1980	Aug 23, 1993
22	Rogers, S. K. Oil Co.	37	37	0	0	Apr 12, 1983	Nov 10, 1986
23	Santa FE Energy Co.	36	36	0	0	Jul 22, 1982	Jan 8, 1986
24	Tamarack Petroleum Company, Inc.	34	34	0	10	Jun 24, 1981	Apr 20, 2006
25	Silver Creek Permian OP Co, LLC	32	32	26	4	Jul 3, 2018	Aug 12, 2022
26	Atapco	30	30	0	13	Jul 19, 1989	Mar 28, 1996
27	Sun Expl. & Prod. Co.-Midland	29	29	0	0	Dec 27, 1979	May 11, 1984
28	Sun Exploration & Production Co.	28	28	0	0	Jan 16, 1978	Apr 21, 1983
29	Ard Drilling Company Inc.	27	27	0	51	Sep 12, 1977	Nov 15, 1999
30	Meridian Oil Inc.	27	27	0	0	Jul 2, 1992	Oct 28, 1994
31	Gruy Petroleum Management Co.	26	26	0	9	Aug 28, 1997	Mar 4, 1998
32	Silver Creek Oil & Gas, LLC	26	26	20	0	Nov 19, 2013	Jul 3, 2018
33	Sbo Corporation	25	25	0	0	Sep 17, 1982	Sep 26, 1985
34	Union Texas Petroleum Corp.	24	24	0	1	Jun 16, 1978	Feb 26, 1990
35	Shenandoah Petroleum Corporation	23	23	18	4	Feb 26, 2004	May 31, 2006
36	United Oil & Minerals, Inc.	22	22	0	5	Oct 15, 1998	Sep 10, 1999
37	Atlantic Richfield Co.	22	22	0	1	Aug 3, 1977	May 25, 1978
38	Arco Oil & Gas Co.	22	22	0	0	May 15, 1979	Jul 8, 1992
39	Pennzoil Exploration & Prod. Co.	22	22	0	0	Aug 9, 1995	Nov 1, 1996
40	Texaco Producing Inc.	22	22	0	0	Jun 30, 1989	Feb 7, 1991
41	Wheeler, W. Ridley, Est.	21	21	0	6	Nov 24, 1980	Aug 12, 1991
42	Tenneco Oil Co.	20	20	0	0	Apr 10, 1980	Sep 2, 1987
43	Dreyfus, Louis Natural Gas Corp	19	19	0	0	Apr 30, 1993	Oct 26, 1995
44	Occidental Permian Ltd.	19	19	0	0	Oct 4, 2001	May 31, 2018
45	Continental Oil Company	18	18	0	0	Jun 28, 1977	May 26, 1978
46	A.C.T. Operating Company	17	17	2	117	Mar 6, 2014	Nov 16, 2023
47	Brown, H. L., Jr.	16	16	0	3	Oct 22, 1979	Nov 5, 1984
48	Merit Energy Company	16	16	10	0	Oct 10, 1997	Jan 10, 2011
49	Redmon Oil Company, Inc., The	15	15	9	2	Nov 7, 2005	Dec 13, 2013
50	Crossroads Energy Partners, LLC	15	15	0	0	Aug 12, 2011	Nov 17, 2011
51	Energen Resources Corporation	15	15	3	0	Feb 18, 2003	May 17, 2018
52	Nielson Enterprises Inc.	15	15	0	0	Apr 4, 1980	Sep 12, 1983
53	White, E. C. Oil Co.	15	15	0	0	Sep 4, 1980	Oct 6, 1995
54	Champlin Exploration, Inc.	14	14	0	1	Mar 31, 1982	Sep 20, 1983
55	Peden, Oren Inc.	14	14	0	0	Jan 21, 1981	Nov 29, 1983
56	Texaco Inc.	13	13	0	14	Dec 2, 1977	Jul 13, 1990
57	Young, Marshall R., Oil Company	13	13	0	2	Nov 9, 1989	Dec 6, 1993
58	Pennzoil Petroleum Company	13	13	0	0	Oct 5, 1994	Feb 21, 1995
59	Winchester Energy Company	13	13	0	0	Mar 24, 1982	Feb 15, 1984
60	Anadarko Petroleum Corp.	12	12	0	0	May 25, 1993	Dec 5, 2002
61	Dekalb Energy Company	12	12	0	0	May 23, 1990	Jun 18, 1990
62	American Petrofina Co. of Tex.	11	11	0	0	Jul 19, 1983	Sep 10, 1984
63	Threshold Development Co.	11	11	0	0	Jan 29, 1981	Dec 31, 1982
64	Chevron U. S. A. Inc.	10	10	0	1	Dec 31, 1986	Aug 21, 1990
65	Paladin Petroleum Corporation	10	10	0	0	Mar 30, 1987	Mar 31, 1987
66	McCoy, J. Roy	9	9	0	25	Aug 29, 1977	May 28, 1982
67	J-D Oil Co.	9	9	0	7	Jan 12, 1984	Jul 30, 1985
68	Coda Energy, Inc.	9	9	0	0	Sep 21, 1995	Dec 13, 1996
69	H R T Oil Company	9	9	0	0	Aug 11, 1983	Jul 11, 1984
70	Texaco E & P Inc.	8	8	0	38	Feb 26, 1991	Oct 29, 1992
71	DP Permian Operator, LLC	8	8	4	1	Jan 22, 2020	Jan 11, 2023
72	Endeavor Energy Resources L.P.	8	8	0	0	Dec 10, 2010	Feb 25, 2013
73	Grand Banks Energy Company	8	8	0	0	Jul 5, 1983	Jul 24, 1989
74	OXY USA WTP LP	8	8	0	0	May 24, 2005	Aug 2, 2018
75	Peden Energy	8	8	0	0	Feb 7, 1989	Sep 24, 2004
76	Manzano, LLC	7	7	6	40	Apr 18, 2022	Aug 1, 2025
77	Rogers, S. K. Oil Inc.	7	7	0	13	Mar 19, 1987	Jun 27, 1989
78	Colrod Company	7	7	0	0	Jul 30, 1981	Dec 31, 1981
79	Davcro Inc.	7	7	0	0	Oct 20, 1988	Aug 21, 1990
80	Henry Energy Corporation	7	7	0	0	May 16, 1985	Mar 6, 1986
81	Sterling Production	7	7	0	0	Jan 19, 1989	May 6, 1991
82	Steward Energy II, LLC	7	7	3	0	Dec 30, 2015	Feb 20, 2018
83	Peden Energy, Inc.	6	6	0	4	Sep 8, 2006	Aug 26, 2011
84	B & B Farm Industries, Inc.	6	6	0	2	Jun 28, 1984	Mar 19, 1985
85	Gulf Oil Corp.	6	6	0	1	Sep 29, 1980	Oct 1, 1984
86	Mammoth Exploration LLC	6	6	4	1	Feb 7, 2018	Sep 28, 2018
87	Moore, Clay	6	6	0	1	Mar 25, 1980	Dec 31, 1981
88	Radtke, D.E. & Associates, Inc.	6	6	0	1	Aug 28, 1980	Dec 31, 1982
89	Coline Oil Corp.	6	6	0	0	Jun 17, 1977	Jul 1, 1977
90	Levelland Energy & Resources,inc	6	6	0	0	May 25, 1982	Oct 10, 1984
91	Parker & Parsley, Inc.	6	6	0	0	Jul 2, 1982	Mar 23, 1984
92	Union Royalty, Inc.	6	6	1	0	Aug 28, 1995	Feb 3, 2003
93	Steller Energy & Investment Corp	5	5	0	6	Mar 2, 2000	Jul 28, 2005
94	Dyco Petroleum Corporation	5	5	0	2	Jun 20, 1977	Apr 19, 1978
95	Browning Oil Company, Inc.	5	5	0	0	Nov 8, 1995	Sep 20, 2002
96	Castex Energy, Inc.	5	5	0	0	May 12, 1989	Feb 15, 1991
97	Dunigan, James P., Inc.	5	5	0	0	Aug 24, 1987	Sep 30, 1987
98	Estacado Energy, Inc.	5	5	0	0	Jul 23, 1993	Jul 15, 1994
99	Fuller Operating Company	5	5	0	0	Dec 10, 1985	Aug 22, 1986
100	Pure Resources, L.P.	5	5	5	0	May 31, 2001	Aug 22, 2001
101	Torreyana Oil Corp.	5	5	0	0	Sep 10, 1979	Feb 19, 1981
102	Bee-Jay Petro, Inc.	4	4	0	9	Nov 8, 1999	Sep 1, 2009
103	Mobil Oil Corporation	4	4	0	2	Dec 15, 1978	Dec 29, 1978
104	Threshold-Blocker Venture	4	4	0	1	Jul 18, 1980	Jan 29, 1981
105	Blue Ridge Resources, LLC	4	4	1	0	May 26, 2009	Jul 18, 2014
106	Bryant & White Oil Co.	4	4	0	0	Jan 17, 1980	Feb 17, 1981
107	D. E. Radtke & Assoc.inc.****p-5	4	4	0	0	Oct 18, 1979	Oct 19, 1979
108	Dunigan Petroleum, Inc.	4	4	0	0	Sep 29, 1989	Jul 10, 1991
109	I.S.R. Exploration, Inc.	4	4	0	0	Apr 10, 1984	Jul 9, 1984
110	Lovelady, Ike Inc.	4	4	0	0	May 23, 1979	Nov 19, 1979
111	Reo Industries, Inc.	4	4	0	0	Dec 31, 1981	Sep 7, 1982
112	Wheeler Operating Corporation	4	4	0	0	Nov 27, 2000	Nov 27, 2000
113	Texland-Rector & Schumacher	3	3	0	37	May 29, 1984	Jan 3, 1989
114	Slate Holdings, Inc.	3	3	0	6	Jan 10, 2014	Jan 10, 2014
115	Greene & Funk	3	3	0	1	Oct 12, 1977	Oct 19, 1979
116	Sandabal Operations, Inc.	3	3	0	1	Aug 1, 1983	Dec 14, 1983
117	Altura Energy Ltd.	3	3	0	0	Apr 27, 2000	May 24, 2000
118	First Permian, L.L.C.	3	3	3	0	Feb 5, 2001	Jun 4, 2001
119	Gen. Amer. Oil Co. of Texas	3	3	0	0	May 11, 1979	May 11, 1979
120	Geotronix Energy Company, Inc.	3	3	0	0	Feb 4, 1988	Feb 11, 1988
121	Hendrix, John H. Corp.	3	3	0	0	Nov 7, 1978	Mar 17, 1983
122	Klabzuba Operating Company	3	3	0	0	Jun 1, 1989	Jul 13, 1993
123	Master Oil and Gas Co.	3	3	0	0	Feb 15, 1985	Oct 8, 1985
124	Monadnock Resources, LLC	3	3	2	0	Nov 15, 2017	Sep 30, 2018
125	Murdoch Petroleum Co.	3	3	0	0	Aug 5, 1983	Aug 5, 1983
126	Palomino Oil & Gas	3	3	0	0	Aug 9, 1984	Feb 8, 1985
127	Placer Energy Corp & Frost,cyrus	3	3	0	0	Nov 25, 1981	Dec 8, 1981
128	Regal Petroleum Services	3	3	0	0	Jul 25, 1985	Aug 7, 1985
129	Sandridge Tertiary, LLC	3	3	0	0	Jun 10, 2008	Jun 25, 2008
130	Satanta Oil Company	3	3	0	0	Sep 22, 1995	Apr 4, 2008
131	Sparkman Producing Company	3	3	0	0	Oct 29, 1984	Dec 18, 1984
132	Sundial Exploration	3	3	0	0	Jan 21, 1985	Sep 3, 1985
133	Texas Explor. & Development Co.	3	3	0	0	Apr 17, 1985	Aug 9, 1985
134	V-F Petroleum Inc.	3	3	0	0	Jul 15, 1983	Jun 15, 1987
135	Kimbell Operating Company	2	2	0	46	Jul 28, 2006	Jul 16, 2007
136	Joplin Oil Co., Inc.	2	2	0	30	May 31, 2011	May 1, 2018
137	Crown Central Petroleum Corp.	2	2	0	18	Nov 22, 1985	Nov 22, 1985
138	Moss Petroleum Co.	2	2	0	7	Jul 13, 1978	Jul 13, 1978
139	Walking X Oil Co.	2	2	0	7	Aug 22, 1984	Sep 7, 1984
140	EL Ran Inc.	2	2	0	4	Jul 15, 1977	Oct 24, 1995
141	BTA Oil Producers	2	2	0	2	Jun 2, 1983	Jul 27, 1988
142	Staley Operating Co.	2	2	0	2	Jul 3, 1980	Nov 12, 1980
143	WTG Exploration	2	2	0	2	Jan 4, 2016	Nov 14, 2016
144	Bryant Oil	2	2	0	1	Dec 31, 1982	Dec 31, 1982
145	Landreth, Robert E.	2	2	0	1	Jan 4, 1979	Mar 16, 1981
146	Newhall Resources	2	2	0	1	Sep 19, 1983	Apr 13, 1984
147	Seven Wells Oil & Gas Expl.	2	2	0	1	Apr 30, 1985	May 21, 1985
148	Texstar Operating Inc.	2	2	0	1	Dec 7, 1990	Dec 7, 1990
149	Westland Oil Development Corp.	2	2	0	1	Jan 24, 1986	Jan 24, 1986
150	Wil-Mc Oil Corporation, The	2	2	0	1	Oct 31, 1983	Sep 5, 1984
151	Windy Cove Energy II, LLC	2	2	2	1	Feb 26, 2018	Apr 10, 2018
152	Arch Petroleum Inc.	2	2	0	0	Sep 28, 1981	Sep 9, 1986
153	BHP Petroleum Company Inc.	2	2	0	0	Nov 21, 1986	Nov 26, 1986
154	Cove Petroleum Corporation	2	2	0	0	Nov 6, 2008	Nov 7, 2008
155	Element Petro Operating II, LLC	2	2	1	0	Jul 13, 2016	Jul 20, 2016
156	Fasken Oil and Ranch, Ltd.	2	2	2	0	Mar 4, 2013	Mar 4, 2013
157	Flag-Redfern Oil Company	2	2	0	0	Nov 12, 1980	Feb 11, 1982
158	Hadaway Consult and Engineer,llc	2	2	2	0	Jan 18, 2019	Jan 23, 2019
159	Hondo Oil & Gas Company Delaware	2	2	0	0	Aug 24, 1990	Dec 28, 1990
160	J & P Operating Co.	2	2	0	0	Oct 9, 1985	Oct 16, 1985
161	Kerr-McGee Corporation	2	2	0	0	Nov 14, 1989	Sep 19, 1991
162	Klabzuba, Robert	2	2	0	0	Sep 23, 1983	Mar 22, 1984
163	McBee Company, The	2	2	0	0	Apr 23, 1984	May 24, 1984
164	Midland Oil and Gas, Inc.	2	2	0	0	Nov 3, 1999	Mar 9, 2000
165	Momentum Energy Corporation	2	2	0	0	Aug 2, 2004	Aug 2, 2004
166	NRM Petroleum Corp.	2	2	0	0	Dec 22, 1980	Nov 17, 1981
167	Ops Group Limited	2	2	0	0	Nov 3, 2010	Nov 3, 2010
168	Quantum Resources Management,llc	2	2	0	0	Oct 29, 2010	Jun 1, 2011
169	Reata Energy Corporation	2	2	0	0	May 17, 1984	Nov 21, 1984
170	Roberts & Roberts Enterprise,inc	2	2	0	0	Dec 31, 1981	Dec 31, 1981
171	Texas, L. Inc.	2	2	0	0	Oct 20, 1980	Oct 20, 1980
172	Tgo Operating, LLC	2	2	0	0	Apr 21, 2008	Sep 16, 2008
173	Turrentine Oil and Gas, Inc.	2	2	0	0	Mar 14, 1996	Nov 19, 1998
174	Whiteface Oil	2	2	0	0	Feb 19, 1980	Jul 18, 1980
175	Williamson, JC & Williamson, RE	2	2	0	0	Jun 15, 1979	Oct 25, 1979
176	Double Barrel Oil LLC	1	1	0	198	Sep 21, 2026	Sep 21, 2026
177	Prasad, Hari Production Co.	1	1	0	37	Nov 3, 2005	Nov 3, 2005
178	Three Span Oil & Gas, Inc.	1	1	0	25	Apr 5, 2000	Apr 5, 2000
179	Brown, H.L. Operating, L.L.C.	1	1	0	7	Jan 24, 2019	Jan 24, 2019
180	Hodgden, Jack D.	1	1	0	5	Sep 24, 1985	Sep 24, 1985
181	Dunigan Operating Co., Inc.	1	1	0	4	Jul 30, 1979	Jul 30, 1979
182	Dora Inc	1	1	0	3	Mar 13, 2001	Mar 13, 2001
183	B & B Operating Co, Inc.	1	1	0	2	Dec 18, 1985	Dec 18, 1985
184	Alpha Twenty-One Production Co.	1	1	0	1	Dec 6, 1984	Dec 6, 1984
185	Fina Oil & Chemical Company	1	1	0	1	Nov 8, 1985	Nov 8, 1985
186	Laguna Petroleum Corporation	1	1	0	1	Jul 10, 1981	Jul 10, 1981
187	Smith Producing Company	1	1	0	1	Nov 7, 1983	Nov 7, 1983
188	South Plains Investments	1	1	0	1	Apr 28, 1982	Apr 28, 1982
189	3 Way Operating Company	1	1	0	0	Jul 22, 1986	Jul 22, 1986
190	Aig Operating Company	1	1	0	0	Dec 31, 1982	Dec 31, 1982
191	Altman Energy, Inc.	1	1	0	0	Jul 18, 1990	Jul 18, 1990
192	Andalucia Oil Company	1	1	0	0	Jun 16, 2009	Jun 16, 2009
193	Baytech, Inc.	1	1	0	0	Nov 13, 1991	Nov 13, 1991
194	Bee-Jay Energy	1	1	0	0	Jun 21, 1985	Jun 21, 1985
195	Brockman, Gerald & Assoc., Inc.	1	1	0	0	Oct 23, 1984	Oct 23, 1984
196	Burgundy Oil & Gas, Inc.	1	1	0	0	Nov 10, 1993	Nov 10, 1993
197	Burleson Petroleum, Inc.	1	1	1	0	May 17, 2017	May 17, 2017
198	Callaway Production Co., Inc.	1	1	0	0	May 31, 1985	May 31, 1985
199	Chi Energy, Inc.	1	1	0	0	Jul 5, 1984	Jul 5, 1984
200	Cholla Petroleum, Inc.	1	1	0	0	Sep 5, 2013	Sep 5, 2013
201	Cola Petroleum, Inc.	1	1	0	0	Aug 30, 1979	Aug 30, 1979
202	Cordova Resources Inc.	1	1	0	0	Dec 13, 1983	Dec 13, 1983
203	Coronado Exploration Co., Inc.	1	1	0	0	Sep 21, 1979	Sep 21, 1979
204	Crescent Energy Corp.	1	1	0	0	Dec 10, 1981	Dec 10, 1981
205	Denny Oil Co.	1	1	0	0	Apr 4, 1990	Apr 4, 1990
206	Doray Corporation	1	1	0	0	Sep 29, 1982	Sep 29, 1982
207	Draco Energy, Inc.	1	1	0	0	Apr 27, 1993	Apr 27, 1993
208	Enersource Enterprises, Inc.	1	1	0	0	Mar 6, 1987	Mar 6, 1987
209	Fasken, Barbara	1	1	0	0	Jun 22, 1987	Jun 22, 1987
210	Ferguson, Hershal & Company	1	1	0	0	Sep 4, 1991	Sep 4, 1991
211	Forster Drilling Co., Inc.	1	1	0	0	Oct 28, 1977	Oct 28, 1977
212	Fuller, R. P. & Rex	1	1	0	0	May 28, 1985	May 28, 1985
213	Gandy, M. C. & Dale	1	1	0	0	Jun 15, 1983	Jun 15, 1983
214	Gem Energy Corporation	1	1	0	0	Dec 11, 1984	Dec 11, 1984
215	Griffin Petroleum Company	1	1	0	0	Oct 5, 2016	Oct 5, 2016
216	Grubb, Shawn J.	1	1	0	0	Oct 22, 1984	Oct 22, 1984
217	Hamon, Jake L.	1	1	0	0	Feb 13, 1979	Feb 13, 1979
218	Henry Petroleum Corp.	1	1	0	0	Aug 2, 1978	Aug 2, 1978
219	Henry Resources LLC	1	1	0	0	Apr 21, 2008	Apr 21, 2008
220	H J E Operating	1	1	0	0	Sep 17, 1982	Sep 17, 1982
221	Holden Energy Corporation	1	1	0	0	Dec 30, 1985	Dec 30, 1985
222	Hunt Oil Company	1	1	0	0	Mar 15, 1990	Mar 15, 1990
223	Jap Oil Corporation	1	1	0	0	Aug 18, 1982	Aug 18, 1982
224	Jet Oil Co.	1	1	0	0	Jul 19, 1989	Jul 19, 1989
225	Kimbell Oil Company of Texas	1	1	0	0	Jun 1, 1995	Jun 1, 1995
226	KP Exploration, Inc.	1	1	0	0	Sep 27, 1991	Sep 27, 1991
227	K & W Oil Company	1	1	0	0	Jul 22, 1981	Jul 22, 1981
228	Laguna Petroleum Co.	1	1	0	0	Jul 11, 1979	Jul 11, 1979
229	Latch Operations	1	1	0	0	Mar 21, 1980	Mar 21, 1980
230	L & B Oil Co. Inc.	1	1	0	0	Mar 9, 1982	Mar 9, 1982
231	Lovelady, I. W.	1	1	0	0	Oct 17, 1977	Oct 17, 1977
232	Maralo, LLC	1	1	0	0	Mar 31, 2004	Mar 31, 2004
233	Marathon Oil Company	1	1	0	0	Jul 7, 1980	Jul 7, 1980
234	McCabe Energy, Inc.	1	1	0	0	Nov 21, 2002	Nov 21, 2002
235	Meridian Exploration Corp.	1	1	0	0	Jun 17, 1996	Jun 17, 1996
236	Nearburg Producing Company	1	1	0	0	Feb 4, 1991	Feb 4, 1991
237	New Reserves Group, Inc.	1	1	0	0	Jul 17, 1981	Jul 17, 1981
238	North American Royalties, Inc.	1	1	0	0	Aug 6, 1986	Aug 6, 1986
239	Northstar Operating Company	1	1	0	0	Mar 17, 2011	Mar 17, 2011
240	Nueve Operating Co. of Texas	1	1	0	0	May 18, 1983	May 18, 1983
241	Petroleum Resources Co.	1	1	0	0	May 4, 1978	May 4, 1978
242	Petrosource Production Co. L.P.	1	1	0	0	Jan 23, 2006	Jan 23, 2006
243	Phillips Petroleum Company	1	1	0	0	Feb 17, 1982	Feb 17, 1982
244	Probe Oil Company	1	1	0	0	Aug 26, 1987	Aug 26, 1987
245	Rand Oil & Gas Corp.	1	1	0	0	Oct 21, 1993	Oct 21, 1993
246	Roca Resource Company, Inc.	1	1	0	0	Mar 17, 1993	Mar 17, 1993
247	Spi Operations LLC	1	1	1	0	Mar 14, 2005	Mar 14, 2005
248	Tema Oil and Gas, LLC	1	1	0	0	Mar 25, 1999	Mar 25, 1999
249	Texas West Oil & Gas Corp.	1	1	0	0	Nov 2, 1983	Nov 2, 1983
250	Tme, Inc.	1	1	0	0	May 31, 1985	May 31, 1985
251	Trigg Drilling Co.	1	1	0	0	Jan 20, 1978	Jan 20, 1978
252	Hilcorp Energy Company	—	0	0	1,355	—	—
253	Extex Operating Company	—	0	0	607	—	—
254	Vision Oil and Gas LLC	—	0	0	415	—	—
255	Cross Timbers Energy LLC	—	0	0	289	—	—
256	Aviator Energy LLC	—	0	0	210	—	—
257	Hunt Cimarron Ltd. Partnership	—	0	0	181	—	—
258	Occidental Permian EOR LLC	—	0	0	151	—	—
259	Walkabout Operating LLC	—	0	0	114	—	—
260	Hexp Operating LLC	—	0	0	97	—	—
261	Yucca Energy Inc.	—	0	0	72	—	—
262	Momentum Operating Co. Inc.	—	0	0	61	—	—
263	Talis Energy Inc.	—	0	0	39	—	—
264	Royal Oryx OG LLC	—	0	0	37	—	—
265	Formentera Operations LLC	—	0	0	25	—	—
266	Novo Energy Resources	—	0	0	22	—	—
267	Delray Oil Inc.	—	0	0	15	—	—
268	IP Well Service LLC	—	0	0	13	—	—
269	Frost Cyrus B. Jr.& Fleming Wm.	—	0	0	11	—	—
270	Acoma Operating LLC	—	0	0	10	—	—
271	Cfo Resources Inc.	—	0	0	10	—	—
272	Winn Operating LLC	—	0	0	10	—	—
273	Red Tail Exploration LLC	—	0	0	8	—	—
274	Atlas Operating LLC	—	0	0	7	—	—
275	D C Oil Company Inc.	—	0	0	7	—	—
276	Jay Management Company LLC	—	0	0	7	—	—
277	Turrentine Oil & Gas Inc.	—	0	0	7	—	—
278	Bridwell Oil Co.	—	0	0	6	—	—
279	C & S Operating	—	0	0	6	—	—
280	Crosstex Services L.L.C.	—	0	0	5	—	—
281	Kala Oil Company	—	0	0	5	—	—
282	Tactical Oil & Gas LLC	—	0	0	5	—	—
283	Burk Royalty Co. Ltd.	—	0	0	4	—	—
284	Consolidated Natural Res. Corp.	—	0	0	4	—	—
285	Finaly Resources LLC	—	0	0	4	—	—
286	F & M Oil & Gas Company	—	0	0	4	—	—
287	Great Western Drilling Company	—	0	0	4	—	—
288	R3 Operating Corporation	—	0	0	4	—	—
289	SSC Inc.	—	0	0	4	—	—
290	Ard Julian	—	0	0	3	—	—
291	Brock J.	—	0	0	3	—	—
292	D & D Enterprises	—	0	0	3	—	—
293	Lee-Stan Saltwater Disposal Inc.	—	0	0	3	—	—
294	Mallory Meredith Jr.	—	0	0	3	—	—
295	Miocene Oil & Gas Ltd.	—	0	0	3	—	—
296	MJB Production Company Inc.	—	0	0	3	—	—
297	Naumann Oil & Gas Inc.	—	0	0	3	—	—
298	Pan American Petroleum Corp.	—	0	0	3	—	—
299	Petro-Tex Operating Co.	—	0	0	3	—	—
300	RMB Operating LLC	—	0	0	3	—	—

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