COUNTIES · HIDALGO · OPERATORS

Hidalgo 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	Shell Western E&P Inc.	324	324	1	48	Mar 11, 1983	Mar 7, 2000
2	Coastal Oil & Gas Corporation	314	314	0	12	Jun 17, 1980	Jul 16, 2001
3	Shell Western E&P	287	287	0	39	Jan 23, 1992	Jan 4, 2011
4	Arco Oil & Gas Co.	200	200	0	20	Feb 13, 1978	May 26, 1994
5	Fina Oil & Chemical Company	182	182	0	10	Aug 8, 1985	Oct 16, 2000
6	El Paso Production Oil & Gas Co.	167	167	0	3	Jan 31, 2001	Jul 27, 2006
7	Mobil Producing TX. & N.M. Inc.	161	161	0	45	Mar 25, 1980	Dec 13, 2010
8	Shell Western E&P Inc.	143	143	0	33	Jun 29, 1977	Dec 22, 1983
9	Texaco E & P Inc.	121	121	0	7	Aug 23, 1991	Jun 21, 2002
10	Superior Oil Company, The	112	112	0	1	Jun 13, 1978	Apr 2, 1986
11	Amoco Production Company	110	110	0	14	Aug 25, 1977	Sep 27, 1990
12	OXY USA Inc.	107	107	1	41	Apr 22, 2011	Mar 27, 2015
13	El Paso E & P Company, L. P.	94	94	0	18	Sep 15, 2000	Feb 5, 2009
14	Fidelity Explor. & Prod. Co.	88	88	0	45	Jan 13, 2006	Sep 11, 2013
15	Bright & Co.	88	88	0	13	Apr 23, 1980	Aug 28, 2003
16	Dewbre Petroleum Corporation	86	86	0	142	Feb 23, 1990	Jun 7, 2023
17	Tana Oil & Gas Corporation	74	74	0	2	Jun 10, 1977	Feb 22, 1990
18	Smith Production Inc.	72	72	0	12	Jul 22, 1999	Jul 22, 2014
19	Chesapeake Operating, Inc.	70	70	0	9	Mar 8, 2006	Sep 1, 2011
20	BP America Production Company	68	68	0	11	Jan 15, 2002	Aug 13, 2009
21	Vastar Resources, Inc.	66	66	0	23	Jul 30, 1979	Sep 25, 2001
22	Forest Oil Corporation	66	66	0	13	Sep 15, 1977	Jan 3, 2011
23	Union Pacific Resources Company	64	64	0	1	Jan 6, 1988	May 7, 1991
24	Merit Energy Company	63	63	0	1,009	Jun 3, 1992	Jun 29, 2026
25	Miramar Petroleum, Inc.	63	63	0	18	Oct 7, 1980	Jan 5, 2015
26	Exxon Corp.	57	57	0	27	Aug 18, 1977	Aug 27, 1991
27	Texas Fuel Company	57	57	0	9	Nov 9, 1987	May 26, 1995
28	Chevron U. S. A. Inc.	56	56	0	40	Jul 22, 1986	Sep 28, 2011
29	Cantera Operating, LLC	53	53	0	6	Jan 2, 2014	Jan 26, 2017
30	Texaco Inc.	49	49	0	33	Jun 6, 1977	Apr 12, 1990
31	Totalfinaelf E&P USA Inc	47	47	0	17	Dec 21, 1999	Apr 25, 2003
32	BNP Petroleum Corporation	45	45	0	6	Dec 31, 1990	Aug 26, 2003
33	Tenneco Oil Co.	44	44	0	46	Oct 11, 1977	Aug 24, 1987
34	Esenjay Petroleum Corp.	44	44	0	2	Sep 25, 1979	Jun 27, 1995
35	Wynn-Crosby Energy, Inc.	40	40	0	8	Nov 23, 1994	Feb 10, 2003
36	Greenbrier Oper. Co.	38	38	0	3	May 1, 1980	Nov 24, 1999
37	EOG Resources, Inc.	37	37	0	15	Jun 28, 2002	Oct 8, 2014
38	Sierra Resources, LLC	37	37	0	3	Sep 11, 2003	Jun 28, 2008
39	Enron Oil & Gas Company	32	32	0	4	May 15, 1989	Apr 1, 1997
40	Champlin Petroleum Co.	29	29	0	19	Jul 13, 1977	Sep 19, 1986
41	Border Exploration Co.	27	27	0	2	Feb 7, 1979	Jun 4, 1982
42	Texaco TPC Inc.	27	27	0	1	Feb 21, 1990	Jun 21, 1991
43	Kaler Energy Corp.	26	26	0	14	Jun 28, 1999	Aug 30, 2011
44	Royal Production Company, Inc.	26	26	0	11	May 4, 1994	Sep 3, 2026
45	Total E&P USA, Inc.	26	26	0	9	Nov 15, 2001	Jul 12, 2005
46	Thorp Petroleum Corporation	26	26	0	4	May 3, 2002	Oct 8, 2008
47	Newfield Exploration Company	25	25	0	10	Jan 26, 2004	Apr 30, 2014
48	Texas Independent Explor., Inc.	25	25	0	4	Aug 23, 1988	Jan 18, 2000
49	Sun Expl. & Prod. Co.-Corpus	25	25	0	3	May 15, 1980	Apr 11, 1988
50	TXO Production Corp.	23	23	0	2	Apr 12, 1982	Aug 9, 1988
51	Kerr-McGee Oil & Gas Onshore LLC	23	23	0	1	Aug 14, 1996	Feb 20, 2004
52	Kerr-McGee Oil & Gas Onshore LP	22	22	0	19	May 5, 2006	Sep 25, 2009
53	Cabot Oil & Gas Corporation	22	22	0	10	Feb 20, 1996	Dec 20, 2007
54	Kebo Oil & Gas, Inc.	22	22	0	10	Jul 27, 2006	Mar 6, 2019
55	Gulf Oil Corp.	22	22	0	6	Jun 29, 1977	Feb 18, 1983
56	Reveille Resources	22	22	0	0	Oct 12, 2007	Feb 25, 2010
57	MW Petroleum Corporation	21	21	0	5	Oct 15, 1992	Mar 2, 1998
58	American Exploration Company	21	21	1	0	Aug 2, 1991	Aug 5, 1997
59	Wagner Oil Company	20	20	0	41	Dec 4, 2000	Dec 1, 2017
60	Legacy Corporation, The	20	20	0	6	Feb 6, 1995	Jan 16, 1997
61	Capital Star Oil & Gas, Inc.	19	19	0	24	Nov 1, 2004	Jan 13, 2014
62	Southwest Oil & Land, Inc.	19	19	0	21	Mar 15, 1990	Feb 14, 1997
63	Samson Lone Star LP	18	18	0	1	Jul 24, 1998	Jun 22, 2007
64	Hilcorp Energy Company	17	17	0	366	Jul 24, 1998	Feb 1, 2022
65	Barnes, Larry Petroleum, Inc.	17	17	0	2	Dec 1, 1988	Dec 8, 1995
66	Pennzoil Producing Co.	16	16	0	14	Jun 10, 1977	Oct 21, 1986
67	Westport Oil and Gas Company, LP	15	15	0	11	Jul 18, 2003	Mar 8, 2006
68	American Petrofina Co. of Tex.	15	15	0	8	Nov 8, 1977	Jul 8, 1985
69	Hughes, Dan A. Company, L.P.	15	15	0	7	Aug 11, 2006	Sep 28, 2022
70	Texaco Producing Inc.	13	13	0	3	Apr 6, 1987	Dec 11, 1990
71	Inexco Oil Company	13	13	0	1	Jul 31, 1978	Aug 27, 1985
72	Tex/Con Oil & Gas Company	13	13	0	0	Dec 20, 1990	Oct 10, 1991
73	Magnum Producing, LP	12	12	0	12	Sep 30, 2004	Feb 2, 2017
74	XTO Energy Inc.	12	12	0	10	Jun 5, 2006	Jun 18, 2019
75	Tesoro E&P Company, L.P.	12	12	1	7	May 7, 1997	Oct 13, 1999
76	Energy Development Corp.	12	12	0	3	Oct 11, 1989	May 31, 2001
77	Ventex Operating Corp.	12	12	0	3	Jul 26, 2004	Oct 28, 2013
78	Williams, Clayton W., Jr.	12	12	0	1	Jul 25, 1977	Aug 22, 1986
79	Goldking Prod. Co.	12	12	0	0	Jul 23, 1979	Jul 25, 1984
80	Owl Creek Production Co., Inc.	12	12	0	0	Jan 30, 1996	Jul 29, 2003
81	Cox, Edwin L.	11	11	0	11	Sep 23, 1977	Mar 20, 1981
82	Suemaur Expl. & Prod., LLC	11	11	0	5	Aug 22, 2002	May 29, 2013
83	Edge Petroleum Oper. Co., Inc.	11	11	0	4	May 5, 1998	Apr 10, 2007
84	Pg&e Resources Company	11	11	0	3	Feb 15, 1989	Aug 31, 1994
85	Headington Oil Company, L.P.	11	11	0	2	Mar 25, 2003	Mar 9, 2006
86	McFarland & Scobey, Inc.	11	11	0	2	Jan 5, 1979	Aug 7, 1987
87	National Oil Company, The	11	11	0	1	Nov 25, 1980	Nov 22, 1983
88	United Oil & Minerals L. P.	11	11	0	1	Apr 18, 2000	Mar 25, 2003
89	Abaco Operating, LLC	11	11	0	0	Jun 14, 2004	Jan 31, 2008
90	Coronado Energy E&P Company, LLC	11	11	0	0	Dec 20, 2007	Aug 20, 2008
91	Denali Oil & Gas Management, LLC	11	11	0	0	Sep 11, 2003	Oct 4, 2005
92	Atlantic Richfield Co.	10	10	0	17	Jul 12, 1977	Feb 28, 1979
93	Neuhaus, V. F. Properties, Inc.	10	10	0	6	Aug 3, 1990	Dec 10, 1993
94	Sanchez Oil & Gas Corporation	10	10	0	3	Nov 27, 2007	Aug 19, 2011
95	Huber, J. M., Corporation	10	10	0	2	Aug 1, 1977	May 29, 1997
96	Pioneer Resources Producing, L.P	10	10	0	2	Nov 3, 1997	Jan 17, 2001
97	Welder Exploration & Prod., Inc.	10	10	0	1	Jan 27, 2003	May 20, 2005
98	Esenjay Operating, Inc.	10	10	0	0	Nov 17, 2007	Aug 21, 2015
99	Flournoy Production Co.	9	9	0	7	Aug 23, 1977	Dec 31, 1985
100	Mitchell Energy Corporation	9	9	0	1	Apr 14, 1978	Sep 13, 2000
101	North Central Oil Corp.	9	9	0	1	Oct 20, 1977	Mar 21, 1986
102	Comstock Oil & Gas, LP	9	9	0	0	May 31, 2007	Jan 13, 2009
103	Seneca Resources Corp.	9	9	0	0	Feb 7, 1984	Apr 20, 1990
104	Stephens Production Company	8	8	0	6	Aug 9, 2001	Oct 1, 2007
105	South Texas Operating Company	8	8	0	5	Jul 6, 1990	Aug 23, 2006
106	Howard Resources, Inc.	8	8	0	3	Mar 8, 1985	Apr 11, 1990
107	Mueller Engineering Corp.	8	8	0	3	Apr 17, 1980	Mar 30, 2000
108	McMoran Production Co.	8	8	0	2	Jun 1, 1981	Mar 20, 1985
109	Texoil Production, Inc.	8	8	0	2	Aug 3, 1982	Mar 1, 1984
110	Houston Exploration Company, The	8	8	0	1	Aug 20, 2002	Feb 5, 2007
111	Abco Energy Corporation	8	8	0	0	Nov 3, 1980	May 6, 1983
112	Greehey & Company, Ltd.	8	8	0	0	Dec 2, 2005	Apr 3, 2007
113	Rincon Petroleum Corporation	7	7	0	15	Apr 5, 2000	Apr 5, 2017
114	CNG Producing Company	7	7	0	2	Nov 20, 1980	Oct 6, 1998
115	Quisto Expl. & Production, L.C.	7	7	0	2	Sep 27, 1994	Dec 10, 1997
116	Bexco Operating, Inc.	7	7	0	1	Sep 10, 1999	Dec 11, 2002
117	Cummins & Walker Oil Co., Inc.	7	7	0	0	Sep 8, 1977	Sep 30, 2003
118	Eex E&P Company, L.P.	7	7	0	0	Jun 25, 1997	Dec 5, 2002
119	McMoran-Transco Expl.co.	7	7	0	0	Jan 26, 1979	Aug 20, 1980
120	Samedan Oil Corporation	7	7	0	0	Aug 3, 1980	Sep 23, 1998
121	Texas Eastern Transmission, LP	7	7	0	0	Apr 29, 2002	May 2, 2017
122	Coastal States Gas Prod. Co.	6	6	0	16	Oct 19, 1977	Oct 26, 1979
123	Pickens Company, Inc., The	6	6	0	9	Oct 20, 1982	Mar 23, 1992
124	Momentum Production Corp.	6	6	0	7	Sep 4, 2002	Oct 31, 2005
125	Riddle Engineering Corp.	6	6	0	4	Mar 12, 2003	May 1, 2009
126	Wainoco Oil & Gas Company	6	6	0	1	Dec 28, 1977	Jun 28, 1984
127	Winchester, Charles & Company	6	6	0	1	Jun 29, 1987	Apr 3, 1989
128	Bass Enterprises Production Co.	6	6	0	0	Jul 11, 1996	Jan 4, 2000
129	Carter Exploration Company	6	6	0	0	May 29, 1996	Nov 29, 2000
130	Headington Oil Company	6	6	0	0	Jun 3, 1993	Apr 23, 1998
131	Heritage Operating Co., Inc. The	6	6	0	0	Apr 29, 1981	Nov 27, 1984
132	Hope Production, Inc.	6	6	0	0	Jan 22, 1988	Nov 12, 1996
133	Hughes, Dan A. Company	6	6	0	0	Nov 4, 2002	Nov 4, 2005
134	May Petroleum, Inc.	6	6	0	0	Feb 19, 1982	Jan 5, 1987
135	PI Energy, Inc.	6	6	0	0	Jul 19, 1994	Jul 29, 2003
136	Pioneer Natural Res. USA, Inc.	6	6	0	0	Aug 10, 2000	Aug 26, 2003
137	Quisto Energy Corp.	6	6	0	0	May 7, 1992	Sep 15, 1994
138	Sanchez-O'Brien Oil & Gas Corp.	6	6	0	0	Dec 14, 1990	Nov 12, 1997
139	Santa FE-Andover Oil Company	6	6	0	0	Dec 2, 1982	Oct 12, 1989
140	Waters Eng. & Operating, Inc.	6	6	0	0	Feb 4, 1993	Jun 21, 1999
141	Apache Corporation	5	5	0	28	Jun 5, 1986	Mar 8, 2012
142	Sun Exploration & Production Co.	5	5	0	19	Dec 28, 1977	Apr 26, 1989
143	Pogo Producing Company	5	5	0	4	Jul 28, 2005	Oct 26, 2005
144	Noble Energy Inc	5	5	0	2	Jan 27, 2003	Jan 23, 2007
145	Beach Exploration, Inc.	5	5	0	1	Dec 2, 1991	Aug 30, 1993
146	Bridge Oil Production Co., Inc.	5	5	0	0	Jan 11, 1991	Dec 4, 1992
147	Hamilton Brothers Oil Co.	5	5	0	0	Sep 28, 1981	Oct 16, 1985
148	Kerr-McGee Corporation	5	5	0	0	Aug 19, 1980	Jun 11, 1999
149	Petrus Operating Co., Inc.	5	5	0	0	Sep 20, 1979	May 31, 1985
150	Southport Exploration Inc.	5	5	0	0	Aug 28, 1979	Jan 13, 1983
151	Milagro Exploration, LLC	4	4	0	14	May 28, 2010	Sep 13, 2013
152	Dalen Resources Oil & Gas Co.	4	4	0	12	Mar 30, 1994	Nov 17, 1994
153	Anderson Oil Ltd	4	4	0	7	Nov 20, 1998	Sep 5, 2003
154	B & B Operating Company	4	4	0	4	Jul 25, 1988	May 9, 1994
155	Dominion Oklahoma Texas E&P, Inc	4	4	0	2	May 17, 2002	Jan 30, 2007
156	Samson Lone Star, LLC	4	4	0	2	Apr 8, 2008	Jul 31, 2008
157	American Quasar Petroleum Co.	4	4	0	1	Oct 3, 1979	Aug 17, 1982
158	Expando Production Company	4	4	0	1	Aug 29, 1977	Mar 15, 1988
159	First Matagorda Corporation	4	4	0	1	Jul 20, 1981	Jun 26, 1984
160	Guadalupe Oil & Gas Company	4	4	0	1	Jul 10, 1984	Jan 11, 1985
161	Oryx Energy Company	4	4	0	1	Oct 1, 1991	Jan 25, 1993
162	Pmo	4	4	0	1	Jul 26, 2002	Jul 9, 2003
163	Reveille Resources (Texas), Inc.	4	4	0	1	May 5, 2010	Dec 21, 2011
164	Sue-Ann Production Company	4	4	0	1	Sep 24, 1991	Jul 5, 1993
165	Amerac Energy Corporation	4	4	0	0	Jul 21, 1997	Oct 27, 1997
166	American Public Energy Co.	4	4	0	0	Aug 26, 1980	Apr 4, 1983
167	Chinn Exploration Company	4	4	0	0	Feb 4, 2009	Feb 1, 2010
168	Coates, George H. Estate Of	4	4	0	0	Oct 31, 1977	Jun 12, 1978
169	Discorbis Oil Co.	4	4	0	0	Aug 23, 1984	Jan 7, 2003
170	Eads Operating Co.	4	4	0	0	Apr 8, 1982	May 21, 1985
171	Live Oak Reserves, Inc.	4	4	0	0	Dec 14, 1994	May 22, 1996
172	LMP Exploration Operating, LLC	4	4	0	0	Dec 10, 2004	Sep 22, 2006
173	Melton Operating Co.	4	4	0	0	Nov 19, 1996	Jul 21, 1998
174	Parker & Parsley Producing L.P.	4	4	0	0	Feb 5, 1996	Aug 27, 1997
175	Phillips, Richard	4	4	0	0	Mar 30, 1979	Jul 6, 1979
176	Richards Producing Company	4	4	0	0	Jun 2, 1981	Sep 22, 1982
177	Sentry Energy Corporation	4	4	0	0	Jul 17, 1987	Jul 25, 1991
178	TXP Operating Company	4	4	0	0	Jun 7, 1985	Jul 21, 1986
179	Texas Oil & Gas Corp.	3	3	0	19	Jun 20, 1977	Jan 23, 1981
180	Mokeen Oil Company	3	3	0	11	Nov 21, 1978	Jul 17, 1979
181	Barrett Brothers Oil & Gas, Inc.	3	3	0	4	Sep 24, 1997	May 26, 2000
182	Varn Petroleum Co.	3	3	0	4	Oct 17, 1977	Dec 31, 1981
183	Coates Energy Trust	3	3	0	3	Sep 1, 1989	Jan 18, 2006
184	Corpus Christi Oil & Gas Co.	3	3	0	3	Mar 16, 1978	Dec 12, 1983
185	Jetta Operating Company, Inc.	3	3	0	2	Jun 2, 2006	Jun 28, 2007
186	Starco Exploration, Inc.	3	3	0	2	Oct 18, 1993	Sep 18, 2002
187	Suemaur Exploration, Inc.	3	3	0	2	Dec 11, 1984	Mar 14, 1997
188	Wynn-Crosby Operating, Ltd.	3	3	0	2	Jul 31, 2013	Sep 18, 2013
189	Bell, Kelly	3	3	0	1	Sep 8, 1978	Oct 10, 1980
190	Cimarex Energy Co.	3	3	0	1	Sep 5, 2006	Feb 16, 2007
191	Pringle Resources, Inc.	3	3	0	1	Jul 14, 1997	May 24, 1999
192	Republic Resources, LLC,	3	3	0	1	Apr 16, 2001	Nov 14, 2002
193	Tana Oil and Gas Corporation	3	3	0	1	Jun 26, 1990	Aug 2, 1990
194	Tri-C Resources, Inc.	3	3	0	1	Aug 13, 1991	Feb 13, 2003
195	Andover Oil Company	3	3	0	0	Nov 14, 1977	Aug 25, 1980
196	Bell, Kelly Inc.	3	3	0	0	Dec 19, 1977	Jul 8, 1981
197	Bishop, R. H.	3	3	0	0	May 29, 1980	Aug 19, 1980
198	Blocker Exploration Co.	3	3	0	0	Apr 30, 1979	Apr 13, 1981
199	Cody Energy, Inc.	3	3	0	0	Nov 15, 1993	Jan 26, 1995
200	Conoco Inc.	3	3	0	0	Nov 14, 1983	Mar 28, 1996
201	Cross Timbers Operating Company	3	3	0	0	Dec 23, 1993	Jan 10, 1996
202	Crown Central Petroleum Corp.	3	3	0	0	Jun 5, 1981	Mar 26, 1986
203	Davis Petroleum Corp.	3	3	0	0	Jun 18, 2004	Sep 29, 2008
204	Erskine Energy, LLC	3	3	0	0	Jan 24, 2005	Jul 13, 2006
205	First Energy Corp. of Miss.	3	3	0	0	Oct 27, 1982	Mar 18, 1986
206	Fisher-Webb, Inc.	3	3	0	0	Apr 24, 1981	Sep 3, 1981
207	Harkins & Company	3	3	0	0	Sep 8, 1986	Jun 17, 1987
208	Hilliard Oil & Gas, Inc.	3	3	0	0	Sep 23, 1977	Oct 23, 1980
209	Moore McCormack Production, Inc.	3	3	0	0	Jan 13, 1978	Aug 21, 1981
210	Presidio SWD, Inc.	3	3	0	0	Dec 7, 1999	Nov 18, 2008
211	RMS Monte Christo, LLC	3	3	0	0	Nov 4, 1996	Nov 6, 1996
212	South Texas Limited Partnership	3	3	0	0	Aug 2, 1993	Nov 24, 1993
213	Spiller, Robert S.	3	3	0	0	Aug 23, 1984	Jul 8, 1987
214	Texas Energy Exploration, Inc.	3	3	0	0	Nov 29, 1979	Jan 7, 1980
215	Transquest, Inc.	3	3	0	0	Apr 13, 1990	Nov 19, 1991
216	United Resources, LP	3	3	0	0	Sep 26, 2003	Dec 19, 2003
217	Vega Petroleum Corporation	3	3	0	0	Apr 11, 1979	May 28, 1987
218	Whiting Petroleum Corporation	3	3	0	0	Jan 29, 2001	Aug 22, 2001
219	Faulconer, Vernon E., Inc.	2	2	0	41	May 7, 1990	Mar 22, 2005
220	Texas Independent Explor Ltd.	2	2	0	12	Feb 12, 2003	Dec 28, 2005
221	Deguello Operating LLC	2	2	0	8	Jun 3, 2016	Jun 17, 2016
222	Cody Energy LLC	2	2	0	7	Feb 26, 2001	Aug 8, 2001
223	Contract Energy, L.L.C.	2	2	0	7	Oct 27, 1999	Oct 5, 2000
224	Risa Energy Corporation	2	2	0	7	May 9, 1985	May 16, 1985
225	Clark Fuel Producing Company	2	2	0	6	Dec 22, 1977	May 31, 1978
226	Southwestern Refining Co., Inc.	2	2	0	5	Apr 6, 1978	Apr 6, 1978
227	White Oak Operating Company LLC	2	2	0	5	Nov 12, 2007	Feb 12, 2008
228	Petrohawk Operating Company	2	2	0	4	Sep 19, 2006	Dec 19, 2007
229	Cabot Petroleum Corporation	2	2	0	3	Apr 8, 1986	Jul 8, 1986
230	Pintex Operating Inc.	2	2	0	3	Jul 7, 1988	Oct 30, 1989
231	J&G Oil & Gas	2	2	0	2	Sep 11, 2000	Dec 28, 2000
232	Maggert Energy Corp.	2	2	0	2	Nov 7, 1986	Feb 24, 1998
233	Southern Disposals, L.L.C.	2	2	0	2	Nov 30, 2000	Apr 12, 2002
234	Whitson, James A., Jr.	2	2	0	2	Sep 11, 2007	Jun 11, 2008
235	Dreyfus, Louis Natural Gas Corp	2	2	0	1	Mar 23, 2000	May 18, 2000
236	Energy Reserves Group, Inc.	2	2	0	1	Mar 18, 1982	Apr 24, 1985
237	Fox, Hewitt B., Inc.	2	2	0	1	Mar 20, 1978	Jan 31, 1995
238	Genesis Petroleum Corporation	2	2	0	1	Jul 27, 1981	Dec 18, 1985
239	Hanson Minerals Co.	2	2	0	1	Dec 30, 1985	Aug 23, 1990
240	Hawn Brothers	2	2	0	1	Jul 12, 1977	Mar 4, 1983
241	Lovelady, Ike Inc.	2	2	0	1	Apr 24, 1981	Mar 30, 1982
242	McCord Exploration Co.	2	2	0	1	Nov 16, 1984	Jan 17, 1986
243	Midas Resources, Inc.	2	2	0	1	Mar 7, 2019	Jul 16, 2025
244	Ocean Energy, Inc.	2	2	0	1	Apr 24, 2002	Sep 13, 2002
245	Peter Paul Petroleum Co.	2	2	0	1	Aug 30, 1977	Apr 28, 1989
246	Rodessa Operating Company	2	2	0	1	Oct 28, 2002	Mar 11, 2004
247	Sue-Ann Operating, L.C.	2	2	0	1	Jun 25, 2014	Dec 5, 2014
248	Templeton Energy, Inc	2	2	0	1	Aug 20, 1981	Sep 9, 1981
249	Transtexas Gas Corporation	2	2	0	1	Sep 19, 1995	Apr 1, 1996
250	Tri-C Resources, LLC	2	2	0	1	Sep 28, 2009	Jul 30, 2012
251	Winn Exploration Co., Inc.	2	2	0	1	Jun 3, 1999	Mar 24, 2000
252	Anderson Producing, Inc	2	2	0	0	Oct 18, 1982	Dec 28, 1983
253	Anschutz Corporation, The	2	2	0	0	Sep 5, 1979	Jul 14, 1981
254	Bison Energy Partners, Inc.	2	2	0	0	Dec 17, 1998	Jul 23, 1999
255	Brooner, Frank I. Jr.	2	2	0	0	Feb 1, 1978	Feb 19, 1988
256	Cabot Oil & Gas Production Corp.	2	2	0	0	Oct 27, 1995	Oct 27, 1995
257	Chapman Oil	2	2	0	0	Jun 6, 1978	Feb 18, 1981
258	Cox, Edwin L. & Cox, Berry R.	2	2	0	0	Apr 27, 1981	Jul 23, 1982
259	Cross Timbers Production Company	2	2	0	0	Apr 20, 1989	Sep 7, 1990
260	Davis Oil Company	2	2	0	0	Oct 17, 1977	Apr 26, 1978
261	Egan-Wilson Petroleum, Inc.	2	2	0	0	Dec 29, 1981	Feb 2, 1982
262	El Paso Production Company	2	2	0	0	Apr 4, 2001	Mar 29, 2006
263	Erskine Operating LLC	2	2	0	0	Aug 1, 2005	Nov 2, 2005
264	Exxon Mobil Corporation	2	2	0	0	Jan 29, 2004	Mar 1, 2004
265	Galilee Oil Investments LLC	2	2	0	0	Oct 13, 2017	Apr 24, 2018
266	Gas Producing Enterprises, Inc.	2	2	0	0	Jan 24, 1978	Feb 5, 1980
267	King Ranch Oil & Gas, Inc.	2	2	0	0	May 22, 1997	Aug 7, 1997
268	Marmaduke & Sebring	2	2	0	0	Jul 6, 1978	Oct 18, 1978
269	Metano Energy, LP	2	2	0	0	May 28, 2004	Sep 8, 2006
270	Meyers-Lasher, Inc.	2	2	0	0	Oct 16, 1978	Jun 20, 1979
271	Monterrey Petroleum Corp.	2	2	0	0	Jan 14, 1980	Apr 9, 1980
272	Neuhaus, V. F./Moore Drilling	2	2	0	0	Oct 9, 1990	Oct 23, 1990
273	O'Bryan, James F.	2	2	0	0	Sep 10, 1980	Sep 10, 1980
274	Paul, Peter Petroleum Co.	2	2	0	0	Feb 12, 1982	Mar 11, 1982
275	Penaco, Inc.	2	2	0	0	Mar 10, 1983	Mar 11, 1983
276	Petroreal Inc.	2	2	0	0	Oct 10, 1995	Jan 2, 1996
277	Petrotex Management Co.	2	2	0	0	Jan 13, 1978	Sep 21, 1981
278	Quintex Petroleum Corp.	2	2	0	0	Dec 15, 1982	Nov 4, 1983
279	Ricks Exploration, Inc.	2	2	0	0	Jun 25, 2001	Aug 29, 2001
280	Synergy Oil & Gas, Inc. (A)	2	2	0	0	May 13, 1998	Nov 5, 1998
281	Transco Exploration Company	2	2	0	0	May 27, 1983	Jun 6, 1983
282	Tri-Union Development Corp.	2	2	0	0	Mar 21, 2000	Jun 14, 2000
283	Weaver Oil & Gas Corp.	2	2	0	0	Sep 5, 1979	Jul 27, 1981
284	Western Gulf Oil & Gas Inc.	2	2	0	0	Nov 19, 1998	Jan 4, 2000
285	Winchester Energy Company	2	2	0	0	Jan 3, 1984	Oct 31, 1984
286	Winchester Energy Operating Co.	2	2	0	0	Jul 5, 1988	Aug 18, 1988
287	Winoil, Inc.	2	2	0	0	Oct 20, 1986	Dec 2, 1986
288	Zinn Petroleum Co.	2	2	0	0	Jul 28, 1980	Sep 11, 1980
289	Phillips Petroleum Company	1	1	0	13	Nov 23, 1993	Nov 23, 1993
290	EP Energy E&P Company, L.P.	1	1	0	9	Jun 19, 2013	Jun 19, 2013
291	Petroleum Corporation of Texas	1	1	0	8	Apr 11, 1983	Apr 11, 1983
292	Neuhaus, V. F.	1	1	0	7	Oct 14, 1982	Oct 14, 1982
293	Mobil Oil Corporation	1	1	0	6	Mar 16, 1978	Mar 16, 1978
294	Platinum Oil & Gas, L.L.C.	1	1	0	5	Oct 2, 2000	Oct 2, 2000
295	Mueller Exploration, Inc.	1	1	0	4	Aug 22, 2000	Aug 22, 2000
296	Mayfair Minerals, Inc.	1	1	0	3	Jun 3, 1986	Jun 3, 1986
297	Safari Production Company, Inc.	1	1	0	3	May 12, 2011	May 12, 2011
298	Baxter, Murphy H.	1	1	0	2	Jun 22, 1977	Jun 22, 1977
299	Denovo Oil & Gas, Inc.	1	1	0	2	Jul 12, 1993	Jul 12, 1993
300	Legend Natural Gas IV, LP	1	1	0	2	Dec 13, 2011	Dec 13, 2011

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