COUNTIES · FRIO · OPERATORS

Frio 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	Cabot Oil & Gas Corporation	197	197	195	0	Oct 23, 2009	Dec 21, 2017
2	Maverick Energy Group, Inc.	127	127	0	463	Sep 27, 2006	Jul 8, 2014
3	Tipperary Oil & Gas Corporation	91	91	0	21	Jun 21, 1977	Mar 20, 1984
4	Virtex Operating Company, Inc.	86	86	56	27	Feb 11, 2008	Feb 17, 2023
5	Trinity Operating (Usg), LLC	78	78	78	103	Jul 30, 2018	Nov 10, 2022
6	Oryx Energy Company	74	74	70	46	Aug 16, 1978	May 20, 1994
7	Shell Western E&P Inc.	67	67	2	1	Feb 29, 1984	Jul 16, 1990
8	Texas American Resources Company	62	62	60	19	Nov 18, 2004	Nov 3, 2026
9	HCM	62	62	0	1	Sep 17, 1993	Dec 17, 1997
10	Williams, Clayton W., Jr., Inc.	61	61	44	1	Jan 14, 1986	Apr 11, 1991
11	Fair Energy	59	59	0	20	Sep 21, 1977	May 23, 1986
12	SN Operating, LLC	53	53	50	0	Jul 21, 2014	Apr 9, 2021
13	Blackbrush O & G, Inc.	51	51	29	1	Nov 2, 2005	May 24, 2012
14	Formentera Operations LLC	49	49	42	78	Jun 28, 2024	Nov 6, 2026
15	Shell Oil Company	38	38	0	7	Mar 30, 1978	Aug 15, 1983
16	U.S. Energy Development Corp	37	37	37	37	Feb 9, 2015	Mar 13, 2019
17	Javelin Energy Partners Mgmt LLC	36	36	36	239	Dec 16, 2021	Nov 5, 2026
18	Rosewood Resources, Inc.	35	35	35	38	Feb 7, 1990	Jul 27, 2026
19	Crown Production Co., Inc.	35	35	0	2	Sep 12, 1979	Oct 20, 1982
20	BRC Operating Company LLC	34	34	32	14	Jul 18, 2011	Feb 24, 2015
21	Virtex Petroleum Company, Inc.	33	33	0	7	Aug 8, 1997	Nov 7, 2007
22	Searoc Oil Company, Inc.	31	31	0	7	Dec 3, 1981	Nov 5, 1984
23	Weber Energy Corporation	30	30	24	9	Nov 23, 1988	Jul 2, 1991
24	Kinlaw Oil Corporation	30	30	30	7	Jan 9, 1990	Dec 13, 1991
25	Atasco, Inc.	29	29	0	0	Jan 13, 1983	May 21, 1985
26	Blackbrush O & G, LLC	28	28	24	102	Apr 10, 2012	Aug 29, 2024
27	Chesapeake Operating, Inc.	27	27	27	18	Nov 9, 1990	May 2, 2013
28	Trans-Canada Entrprses of TX Inc	26	26	0	1	Sep 19, 1980	Jul 20, 1982
29	Hat Creek Energy LLC	26	26	25	0	Sep 27, 2012	May 25, 2018
30	Major Exploration, Inc	25	25	0	1	Oct 16, 1981	Aug 24, 1984
31	Exco Operating Company, LP	24	24	24	26	Nov 26, 2012	Jul 20, 2022
32	Property Development Group, Inc.	24	24	0	5	Apr 28, 1997	Jul 22, 2014
33	Dale Operating Company	23	23	23	6	Nov 20, 1989	Sep 13, 2001
34	Venado Operating Company LLC	23	23	23	1	Jul 31, 2018	Mar 16, 2022
35	Dilley Production Co.	23	23	0	0	Oct 3, 1977	Mar 23, 1981
36	Zenith Exploration Co., Inc.	22	22	0	1	Dec 8, 1977	Dec 3, 1981
37	Panther Hollow Ranch, Ltd	22	22	0	0	Jun 29, 1977	Oct 23, 1985
38	Lawbar Petroleum, Inc.	21	21	0	13	Sep 2, 1977	Jul 18, 1997
39	Stonegate Production Company,llc	21	21	21	2	Feb 10, 2009	Oct 3, 2014
40	EF Energy, L.L.C.	21	21	19	0	Oct 13, 2010	Mar 19, 2014
41	Fair Oil, Ltd.	20	20	0	4	Jul 8, 1977	May 30, 2008
42	C&C II	20	20	0	0	Jul 3, 1984	Apr 22, 1985
43	Goodrich Petroleum Company	20	20	20	0	May 24, 2010	Jul 28, 2014
44	Pearsall Partners	20	20	20	0	Feb 5, 1990	Apr 11, 1991
45	Union Pacific Resources Company	19	19	18	33	Nov 10, 1987	Sep 15, 1993
46	U.S. Enercorp, Ltd.	18	18	18	2	Aug 28, 2009	Mar 31, 2015
47	Ricochet Energy, Inc.	18	18	18	0	Nov 20, 2009	Nov 2, 2012
48	Hughey, W. R., Operating Co.	17	17	1	5	Jul 7, 1977	Oct 11, 1989
49	Convest Energy Corporation	17	17	0	0	Jun 17, 1977	Dec 31, 1982
50	H.L.S. Energy Co., Inc.	16	16	15	8	Dec 21, 1989	Apr 30, 1991
51	GLG Energy, L.P.	16	16	15	3	Dec 5, 1989	Nov 26, 1990
52	Christico Petroleum Company	16	16	16	2	Nov 29, 1989	Mar 9, 1992
53	Fenn, Bill Inc.	16	16	15	1	Feb 26, 1990	Jan 22, 1991
54	Gemini Exploration Company	16	16	16	0	May 10, 1990	Jun 15, 1993
55	Tide West Oil Company	16	16	16	0	Nov 14, 1989	Dec 3, 1991
56	Tamarack Petroleum Company, Inc.	15	15	9	39	Sep 16, 1983	Nov 17, 1992
57	LP Operating, LLC	15	15	0	25	Jul 14, 2014	Sep 23, 2021
58	Pedeco, Inc.	15	15	9	4	Jun 5, 1997	Apr 22, 1999
59	Tipperary Exploration, Inc.	15	15	0	0	Apr 25, 1978	Oct 17, 1978
60	Ladd Petroleum Corp.	14	14	0	0	Jul 26, 1977	Sep 2, 1983
61	Arrow Petroleum Company	13	13	0	6	May 25, 1978	Apr 18, 1991
62	Jay-Dee Operating Company	13	13	0	6	Mar 13, 1980	Apr 1, 1981
63	Sandia Energy Corporation-NM	13	13	12	3	Oct 24, 1989	Jun 16, 1993
64	Warncke, Glennwood	13	13	0	0	Sep 11, 1979	Jul 28, 1981
65	Ageron Energy, LLC	12	12	12	12	May 31, 2017	Dec 2, 2019
66	Cantro Exploration, Inc.	12	12	11	3	Nov 3, 1989	Mar 19, 1992
67	Exxon Corp.	12	12	5	3	Jul 14, 1981	Sep 30, 1991
68	Glenn, Wayne E. & Assoc., Inc.	12	12	0	0	Oct 6, 1977	Mar 6, 1986
69	Southern Energy & Exploration Co	12	12	0	0	Oct 7, 1981	Aug 14, 1984
70	WCS Oil and Gas Corporation	11	11	11	9	Nov 9, 1989	Dec 13, 1991
71	Basin Resources Corporation	11	11	11	2	Sep 21, 1989	Jan 11, 1991
72	Central Texas Oil & Gas	11	11	10	2	Dec 9, 1986	Dec 6, 1991
73	Pamale Petroleum Co.	11	11	0	1	Jun 15, 1977	Dec 28, 1979
74	Energy Resources Oil & Gas Corp.	11	11	0	0	Aug 26, 1981	Jun 15, 1982
75	First Rock, Inc.	10	10	6	14	Jan 2, 2003	Jan 24, 2008
76	Glenco Oil & Gas Company	10	10	0	8	Jun 30, 1981	Nov 14, 1985
77	Central Gulf Petroleum Inc	10	10	0	6	Dec 2, 2025	Oct 16, 2026
78	Energy Reserves Group, Inc.	10	10	0	0	Oct 7, 1977	Mar 22, 1985
79	Saxon Oil Company	10	10	0	0	Sep 21, 1977	Jan 3, 1978
80	Texaco Producing Inc.	10	10	4	0	Feb 13, 1986	Jan 3, 1991
81	Triumph Petroleum Company,l.l.c.	10	10	9	0	Dec 21, 2001	Aug 12, 2004
82	Trailblazer Energy Resources,llc	9	9	9	87	Jul 26, 2024	Mar 27, 2025
83	Getty Oil Co.	9	9	0	8	Jun 29, 1977	Nov 22, 1983
84	Crown Petroleum Inc.	9	9	0	5	Oct 17, 1979	May 1, 1981
85	Hoskins, L. R. & Sons, Inc.	9	9	0	4	Nov 15, 1979	Mar 17, 1983
86	Rio Bravo Royalty Co.	9	9	2	4	Nov 13, 1978	Feb 7, 1991
87	Overly Operating Co.	9	9	0	3	Aug 30, 1977	Jul 9, 1981
88	Ampak Oil Company	9	9	6	2	Jul 31, 1990	Sep 21, 1993
89	Mid-Western Oil & Gas, Inc.	9	9	0	1	Nov 13, 1987	Aug 19, 1988
90	Ocean Trace Exploration	9	9	0	0	Apr 25, 1980	Apr 16, 1981
91	Pendragon Oil Co.	9	9	7	0	Feb 14, 1990	Aug 13, 1992
92	United Texas Petroleum Inc.	9	9	0	0	Feb 20, 2001	Feb 20, 2001
93	Windsor Exploration Company	8	8	8	5	Mar 8, 1990	Mar 7, 1991
94	McA Petroleum Corporation	8	8	0	4	Oct 18, 1983	Dec 4, 1986
95	Ellsworth, H. P. O&G Properties	8	8	8	3	Jan 16, 1990	Nov 30, 1990
96	Cheyenne Petroleum Company	8	8	7	2	Sep 26, 1991	Aug 27, 2012
97	Catlett, E. G.	8	8	0	1	Dec 14, 1982	Jun 7, 1984
98	Balcones Oil Co., Inc.	8	8	0	0	Nov 29, 1978	Mar 27, 1979
99	Citation Oil & Gas Corp.	8	8	6	0	Dec 21, 1990	Aug 8, 1996
100	Hinton Production Company	8	8	8	0	Mar 16, 1990	Jun 7, 1993
101	Hopi, Inc.	8	8	8	0	Apr 11, 1990	Dec 17, 1990
102	XB Energy Services, Inc.	8	8	0	0	Feb 2, 1981	May 1, 1981
103	Bigfoot Oil LLC	7	7	3	62	Apr 13, 2018	Aug 23, 2022
104	Mueller Exploration, Inc.	7	7	7	12	Jul 22, 2015	Sep 14, 2022
105	Tularosa Operating Company	7	7	6	10	Sep 7, 1990	Jan 9, 1992
106	Alamo Operating Company, L. C.	7	7	3	3	Dec 15, 2004	Oct 10, 2012
107	Clemco	7	7	0	1	Oct 7, 1980	Nov 8, 1982
108	Continental U S Exploration, Inc	7	7	0	1	Dec 31, 1981	Jul 23, 1982
109	Concord Energy, Inc.	7	7	0	0	Oct 18, 1979	Jan 14, 1981
110	Diamond Petroleum	7	7	7	0	Jul 27, 1990	Mar 7, 1991
111	Fossil Bay Petroleum, Inc.	7	7	4	0	Dec 14, 1989	Aug 7, 1990
112	Hess Corporation	7	7	6	0	Feb 6, 2012	May 1, 2012
113	Randado Oil & Minerals, Inc.	7	7	0	0	Nov 10, 1980	May 22, 1981
114	Fair Oil Company	6	6	0	17	Jul 2, 1981	Oct 19, 1984
115	Parker & Turner	6	6	0	7	Aug 9, 1983	Feb 15, 1985
116	Auburn Enterprises, Inc.	6	6	3	4	Jun 28, 1990	Sep 11, 1991
117	Edco Energy, Inc.	6	6	6	3	Jan 17, 1990	Feb 6, 1991
118	Harper & Lawless	6	6	0	1	Sep 15, 1977	Nov 15, 1977
119	Tejas Production Co	6	6	0	1	Oct 31, 1977	Jun 12, 1979
120	Andrews Oil Company	6	6	0	0	May 3, 1983	Jun 6, 1984
121	Evergreen Oil & Gas	6	6	0	0	Aug 6, 1987	Sep 8, 1988
122	Glennco Exploration Ltd.	6	6	0	0	Jul 29, 1980	Feb 1, 1982
123	Momentum Oil & Gas Corporation	6	6	4	0	Aug 14, 1990	Apr 29, 1992
124	Plains Petroleum Operating Co.	6	6	1	0	Sep 23, 1987	Nov 2, 1990
125	Premier Minerals, Inc.	6	6	3	0	Mar 30, 2006	Sep 9, 2011
126	Reserve Energy Corp.	6	6	0	0	Jul 16, 1981	Oct 8, 1982
127	Sabre Operating, Inc.	6	6	6	0	Mar 19, 1990	Feb 4, 1991
128	Staccatto Energy Corporation	6	6	0	0	Oct 22, 1982	Jul 19, 1983
129	Texas Oil Development Corp.	6	6	0	0	May 28, 1981	Dec 10, 1981
130	Yahola Operating Co.	6	6	2	0	Sep 30, 1988	Feb 28, 1990
131	Oilex Int'l Investments, Inc.	5	5	0	59	Sep 10, 1997	Dec 1, 1997
132	Altair Energy Corp.	5	5	5	11	Apr 6, 1990	Feb 22, 1991
133	Arete Operating Company, LLC	5	5	3	6	Feb 14, 2025	Jun 12, 2026
134	JB Oil & Gas Well Service	5	5	4	6	Jun 11, 1990	Oct 9, 2007
135	Minerals of Texas, Inc.	5	5	1	6	Aug 21, 1985	Jun 18, 1990
136	Flournoy Production Co.	5	5	3	4	Aug 30, 1979	Jul 18, 1990
137	Fox and Holland	5	5	0	4	Sep 29, 1977	Sep 25, 1985
138	Champlin Petroleum Co.	5	5	0	3	Jun 14, 1977	Sep 21, 1977
139	Mayo Oil Co.	5	5	0	3	Apr 18, 1983	Feb 27, 1986
140	Robin-Wood Petr. Inc.	5	5	0	3	Jun 6, 1977	Nov 14, 1984
141	American Disposal Services,ltd	5	5	0	2	Sep 30, 2010	Jan 30, 2013
142	Arpel, Inc.	5	5	5	2	Oct 15, 1990	Nov 21, 1991
143	Freeman Energy, Inc.	5	5	0	2	Jun 13, 1980	Aug 20, 1980
144	Texas International Resource LLC	5	5	5	2	Oct 13, 2014	Jan 12, 2021
145	Catarina Petroleum L. C.	5	5	0	1	Jan 31, 1994	Aug 21, 2006
146	C & C Energy Co.	5	5	0	1	Dec 18, 1981	Apr 23, 1982
147	Evergreen Oil Corporation	5	5	0	1	Oct 16, 1980	Dec 31, 1981
148	Gierhart, B. J. Inc.	5	5	0	1	Jan 20, 1981	Jan 20, 1981
149	Guaranty Petroleum Corp.	5	5	0	1	Dec 27, 1979	Dec 31, 1980
150	Hughey, W. R. Operating & Basin	5	5	0	1	Dec 19, 1977	Dec 19, 1977
151	Noble Energy, Inc.	5	5	5	1	Nov 3, 1989	May 14, 1990
152	Acock Engineering & Assoc., Inc.	5	5	5	0	Feb 15, 1991	May 1, 1992
153	Astro Production, Inc.	5	5	0	0	Oct 20, 1980	Jan 14, 1981
154	EP Energy E&P Company, L.P.	5	5	5	0	Dec 17, 2018	Dec 31, 2018
155	Gouger & Mitchell	5	5	0	0	Aug 11, 1977	Nov 18, 1980
156	GZG Energy, Inc.	5	5	0	0	Dec 17, 1981	Jun 21, 1982
157	Hunter & Hada	5	5	5	0	Apr 5, 1990	Oct 10, 1991
158	Hydroex, Inc.	5	5	5	0	Jan 3, 1990	Mar 7, 1991
159	Pacific Enterprises Oil Co.(usa)	5	5	5	0	Mar 15, 1990	Sep 24, 1991
160	Proteus Petroleum Inc.	5	5	0	0	Jun 13, 1980	Mar 5, 1981
161	Williams, Clayton W., Jr.	5	5	0	0	Apr 23, 1985	Oct 28, 1985
162	Tex-Hex Corp.	4	4	4	46	Mar 6, 1990	Oct 25, 1990
163	Mormac Oil & Gas Co.	4	4	0	25	Aug 8, 1977	Apr 9, 1980
164	Neumann, Alfred	4	4	0	15	Jan 20, 1984	Jul 12, 1995
165	McDay Energy Corp.	4	4	3	9	Apr 5, 2006	Nov 3, 2008
166	Flag-Redfern Oil Company	4	4	0	5	Aug 19, 1977	Aug 1, 1978
167	Noremac, Inc.	4	4	0	4	Jan 27, 1984	Mar 21, 1985
168	Cannan, Morris	4	4	1	3	Mar 12, 1986	Apr 1, 1991
169	MGF Oil Corporation	4	4	0	3	Apr 4, 1978	Dec 30, 1982
170	Texakoma Oil & Gas Corporation	4	4	4	3	Jan 30, 1990	May 13, 1991
171	EOG Resources, Inc.	4	4	4	2	May 31, 2024	Feb 23, 2026
172	V/J Oil Company	4	4	0	2	Sep 21, 2005	Dec 13, 2006
173	Calame, Jack	4	4	0	1	Apr 1, 1998	Apr 10, 2000
174	Carrizo Oil & Gas, Inc.	4	4	4	1	Feb 28, 2008	Dec 1, 2011
175	Davis, Donald E.	4	4	0	1	Mar 6, 1978	Jan 30, 1980
176	Driver Investments, Inc.	4	4	0	1	Nov 24, 1982	Jan 17, 1985
177	Jontex Energy, Inc.	4	4	3	1	Jun 20, 1990	Jan 18, 1991
178	Meridian Oil Inc.	4	4	3	1	Dec 5, 1989	Dec 20, 1990
179	North Texas Petroleum, Inc.	4	4	0	1	Mar 11, 1981	May 12, 1982
180	Penwell Energy, Inc.	4	4	4	1	Mar 28, 1990	Oct 26, 1990
181	Brayton Oil Corp.	4	4	3	0	May 8, 1990	Sep 24, 1990
182	Carrizo (Eagle Ford) LLC	4	4	4	0	Jul 24, 2013	Feb 4, 2016
183	Durst Oil Company	4	4	4	0	Feb 8, 1990	Apr 3, 1991
184	Export Petroleum Corp.	4	4	0	0	Dec 31, 1980	Feb 26, 1982
185	Jenex Petroleum Corporation	4	4	0	0	Feb 18, 2004	Feb 15, 2006
186	Manti Operating Company	4	4	0	0	Aug 19, 2008	Nov 12, 2008
187	Maverick Energy Group, LLC	4	4	0	0	Nov 10, 2004	Nov 23, 2004
188	Nichols,edwin S Explorations Inc	4	4	1	0	Feb 7, 2001	Nov 3, 2008
189	Phoenix Fund, Inc.	4	4	0	0	Aug 8, 1980	May 26, 1981
190	Sanchez-O'Brien / Texaco Inc.	4	4	4	0	Aug 24, 1990	Oct 25, 1990
191	Zaza Energy, LLC	4	4	4	0	Sep 6, 2011	Sep 15, 2011
192	Propet Oil & Gas Inc.	3	3	0	22	Aug 10, 1981	Jun 21, 1982
193	Hughes, Dan A. Company, L.P.	3	3	3	12	Aug 15, 2011	Oct 18, 2012
194	Tobin, Don F.	3	3	0	9	Nov 22, 1977	Nov 13, 1978
195	U.S.A. Plugging Company	3	3	0	9	Apr 24, 2006	Jul 29, 2008
196	Mineral Resources, Incorporated	3	3	0	8	Apr 13, 1993	Jan 3, 1996
197	C6 Operating, L.L.C.	3	3	2	7	Sep 16, 2013	Jan 29, 2015
198	Dantex Oil & Gas, Inc.	3	3	3	7	Dec 18, 1989	Oct 19, 1990
199	Fortune Operating Company	3	3	3	5	Dec 19, 1995	Mar 26, 1996
200	Goldking Prod. Co.	3	3	0	5	Aug 23, 1977	Nov 7, 1977
201	Kaler Energy Corp.	3	3	3	4	Apr 30, 2010	Aug 9, 2010
202	Shield Petroleum	3	3	3	4	Apr 25, 1990	Jun 8, 1992
203	Sien Operating Company, LLC	3	3	3	4	Oct 29, 2010	Dec 14, 2010
204	Burk Royalty Company	3	3	0	3	Aug 2, 1977	Mar 14, 1985
205	C and S Oil & Gas	3	3	0	3	May 12, 1994	Feb 1, 1995
206	Capitol Operating & Expl., Inc.	3	3	3	3	Jun 22, 1992	Feb 14, 1993
207	H-M Oil Company	3	3	0	3	Apr 7, 1982	Apr 8, 1983
208	Mantle Oil & Gas, LLC	3	3	0	3	Jan 11, 2022	May 23, 2022
209	American Hunter Exploration Ltd.	3	3	0	2	Feb 9, 1982	Aug 2, 1982
210	Apache Corporation	3	3	0	2	Jul 7, 1977	Oct 3, 1977
211	Mariah Energy Corp.	3	3	0	2	May 9, 1990	May 1, 1992
212	Peninsula Resources Corp.	3	3	0	2	Sep 28, 1977	Nov 15, 1977
213	Seeker Oil Company, Incorporated	3	3	0	2	Dec 19, 1984	Sep 18, 1985
214	Basin Op. Co. Ltd. Hinton Prodco	3	3	0	1	Jun 6, 1977	Mar 14, 1980
215	Geodynamics Oil & Gas, Inc.	3	3	0	1	Nov 10, 1977	Jan 27, 1978
216	Harper Hefte, Inc.	3	3	0	1	Sep 3, 2008	Apr 12, 2012
217	Hines, Arnold L.	3	3	0	1	Feb 23, 1987	Mar 17, 1987
218	Mescalero Energy, Inc.	3	3	2	1	Jul 13, 1993	Dec 8, 1994
219	Orion Oil Co.	3	3	0	1	Aug 18, 1980	Jun 24, 1981
220	Reata Oil & Gas Corp.	3	3	0	1	Aug 13, 1979	Dec 31, 1979
221	RGR Production	3	3	3	1	Feb 6, 1990	Feb 5, 1991
222	T Cattle Co.	3	3	0	1	Jun 20, 1977	Jul 29, 1985
223	Texaco Inc.	3	3	0	1	Dec 31, 1980	Sep 20, 1982
224	World Energy Corporation	3	3	3	1	Feb 4, 1991	Jul 18, 1991
225	Amac Energy, L.L.C.	3	3	3	0	Sep 5, 2014	Feb 5, 2015
226	Asher Petroleum Corp.	3	3	0	0	Jul 10, 1985	Apr 15, 1986
227	Baker, James A. III	3	3	0	0	Aug 14, 1979	Nov 18, 1980
228	Barnes, Larry Petroleum, Inc.	3	3	3	0	Jul 26, 1990	Nov 12, 1990
229	Burnett Oil Co., Inc.	3	3	3	0	Nov 17, 2011	Dec 9, 2011
230	Clear Fork, Incorporated	3	3	3	0	Dec 31, 1990	Jul 9, 1991
231	Colt Operating Corporation	3	3	0	0	Sep 28, 1994	Feb 6, 1995
232	Columbia Gas Development Corp.	3	3	3	0	Mar 5, 1992	Apr 27, 1993
233	Comstock Oil & Gas, LP	3	3	3	0	Jun 24, 2014	Jun 8, 2018
234	Cross Winds Energy Corporation	3	3	2	0	Oct 19, 1990	Apr 5, 1991
235	Diamond Shamrock Exploration Co.	3	3	0	0	Oct 4, 1985	Feb 13, 1986
236	Freeman Ener Inc & Allstate Ener	3	3	0	0	Jul 21, 1980	Aug 25, 1981
237	Giebel, Aaron F.	3	3	0	0	May 13, 1981	Oct 19, 1981
238	Inco Oil Corporation	3	3	3	0	Jan 21, 1991	Oct 25, 1991
239	Lake Ronel Oil Company	3	3	0	0	Oct 1, 1980	Oct 28, 1983
240	Magnum Petroleum, Inc.	3	3	1	0	Apr 8, 1992	Mar 21, 1995
241	Pickens Company, Inc., The	3	3	0	0	Jan 11, 1985	Apr 22, 1985
242	Raider Oil Corp.	3	3	0	0	May 2, 1979	Apr 10, 1981
243	Republic Resources, LLC.	3	3	0	0	Sep 30, 2008	Sep 30, 2008
244	Sklar Exploration Company LLC	3	3	0	0	Sep 24, 2003	Jun 28, 2010
245	Spur Operating Co.	3	3	0	0	Mar 2, 2001	Dec 16, 2009
246	Texas Trust Co.	3	3	0	0	Jul 1, 1977	Aug 23, 1977
247	Thunder Oil & Gas, LLC	3	3	0	0	Apr 9, 2008	May 1, 2008
248	T & T Production Co.	3	3	0	0	Jan 8, 1985	Jan 30, 1985
249	Ginco Operating Co.	2	2	0	48	Jul 15, 1992	Jul 15, 1992
250	Seago Petroleum, Inc.	2	2	2	12	Oct 22, 1992	Dec 1, 1993
251	Producers Engineering Company	2	2	0	11	Dec 17, 1981	Dec 8, 1982
252	Collier Diamond -C- Oils, Inc.	2	2	0	9	Jul 18, 1977	Jun 12, 1978
253	Sage Energy Company	2	2	2	9	Dec 27, 2005	Jan 23, 2006
254	Impetro Operating LLC	2	2	0	8	Jun 23, 2011	May 30, 2013
255	Omber Petroleum & Energy Corp.	2	2	1	7	Sep 19, 1990	Dec 20, 1990
256	Beard Energy Group, Inc.	2	2	0	6	Sep 12, 1983	Dec 30, 1983
257	Inexco Oil Company	2	2	0	6	Mar 6, 1978	Oct 20, 1980
258	Texan Production Company, Inc.	2	2	0	6	Jan 17, 1997	Jan 24, 1997
259	Chiodo Corp.	2	2	2	5	Feb 15, 1991	May 23, 1991
260	Texas Southern Energy Corp.	2	2	2	4	Nov 16, 1990	May 3, 1991
261	Ancira, Robert	2	2	0	3	Jul 28, 1981	Apr 23, 1985
262	Killam Oil Co., Ltd.	2	2	2	3	Jul 8, 2011	Oct 31, 2011
263	Tana Oil & Gas Corp.	2	2	0	3	Jun 28, 1977	Nov 29, 1977
264	Texan Production	2	2	2	3	Apr 6, 1993	Jun 8, 1993
265	Huisache Operating Co.	2	2	0	2	Nov 29, 1977	Dec 12, 1977
266	Jenkins Oil Corporation	2	2	2	2	Apr 4, 1990	Jul 21, 1993
267	Lancelot Operations, Inc.	2	2	0	2	Jan 6, 1984	Jan 6, 1984
268	Leexus Oil LLC	2	2	2	2	Nov 5, 2008	Jan 19, 2011
269	MKS Services, LLC	2	2	0	2	Sep 26, 2012	Sep 26, 2012
270	Nutek Oil Inc	2	2	0	2	Jan 22, 2001	Jul 7, 2003
271	Sabinal Resources, Inc.	2	2	1	2	Jun 7, 2001	Nov 17, 2008
272	Seagull Operating Co. Inc.	2	2	0	2	Jul 10, 1978	Sep 29, 1980
273	Taylor, M. W. Inc.	2	2	0	2	Jun 20, 1984	Nov 19, 1984
274	Allen, Buford W.	2	2	0	1	Mar 13, 1989	Mar 13, 1989
275	Aspen Services	2	2	2	1	Jul 20, 1990	Aug 16, 1990
276	BHP Petroleum (Americas) Inc.	2	2	1	1	Aug 20, 1985	Apr 21, 1989
277	Black Gold Operating Co., Inc.	2	2	0	1	Aug 24, 1984	May 7, 1985
278	Buffco Production Inc.	2	2	2	1	Apr 9, 2014	Oct 21, 2014
279	Cachara Oil & Gas Co.	2	2	1	1	Oct 9, 1990	Nov 21, 1990
280	Castleman, John P. Jr.	2	2	0	1	May 25, 1983	Jun 3, 1983
281	Civron Petroleum Res., LLC	2	2	0	1	Sep 18, 2008	Jul 14, 2009
282	Crude Processing, Inc.	2	2	0	1	Jan 26, 1981	Feb 23, 1981
283	Godsey & Riley	2	2	0	1	Oct 1, 1980	Dec 31, 1980
284	Great West Energy & Expl., Inc.	2	2	2	1	Mar 5, 1990	Jan 10, 1994
285	Holley Oil Company, LLC	2	2	1	1	Feb 26, 2003	Feb 8, 2008
286	Kebo Oil & Gas, Inc.	2	2	2	1	Dec 18, 1989	Apr 13, 1990
287	Nails Operating Company LLC	2	2	0	1	Sep 22, 2014	Dec 3, 2014
288	Olmos Partners, Inc.	2	2	0	1	Dec 23, 1994	Nov 18, 1996
289	Red Arrow Energy, LLC	2	2	2	1	Apr 10, 2008	May 13, 2008
290	R. K. G. Engineering, Inc.	2	2	0	1	Mar 18, 1980	Mar 18, 1980
291	Rock Solid Operating, LLC	2	2	1	1	Oct 29, 2007	Oct 6, 2008
292	Vega Petroleum Corporation	2	2	0	1	Jun 17, 1977	Jun 30, 1977
293	Acieteros, Ltd.	2	2	0	0	Sep 22, 1980	Nov 7, 1980
294	Acock Engineering & Operating Co	2	2	2	0	Feb 27, 1990	Dec 12, 1990
295	Allerkamp, Ernest E.	2	2	0	0	Jun 15, 1987	Oct 6, 1989
296	Ambassador Petroleum, Inc.	2	2	1	0	Mar 1, 2011	Apr 5, 2012
297	Amberton Exploration Company	2	2	2	0	Dec 13, 1990	Jan 3, 1991
298	Arrow Petr. & W.B. Yarborough	2	2	0	0	Aug 25, 1977	Mar 21, 1978
299	Awp Operating Company	2	2	2	0	Feb 18, 2011	Mar 21, 2012
300	Bankers Investment Group, Inc.	2	2	2	0	Feb 28, 1990	Jun 15, 1990

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