COUNTIES · MADISON · OPERATORS

Madison 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	MD America Energy, LLC	87	87	82	0	Sep 7, 2010	Jan 27, 2020
2	Burk Royalty Co., Ltd.	74	74	2	14	Aug 2, 2011	Oct 16, 2020
3	Marshall Expl. Inc.	71	71	0	6	Sep 1, 1981	Jan 24, 1991
4	Parten, J. R.	70	70	0	13	Jul 7, 1977	Oct 21, 1986
5	Crimson Exploration Oper., Inc.	47	47	39	14	Jul 14, 2005	Oct 23, 2015
6	Shar-Alan Oil Company	45	45	0	8	Dec 18, 1980	Jan 8, 1988
7	Woodbine Acquisition LLC	41	41	41	0	May 5, 2012	Aug 7, 2014
8	Natural Resource Management Corp	40	40	0	0	Nov 4, 1983	Nov 4, 1985
9	Energy & Expl. Prtnrs Oper., LP	36	36	8	2	Apr 23, 2013	May 8, 2015
10	Mitchell Energy Corporation	35	35	0	6	Nov 29, 1977	Dec 8, 1998
11	EOG Resources, Inc.	33	33	21	35	Jun 23, 2012	Jan 12, 2017
12	Barrow-Shaver Resources Co.	33	33	0	31	Aug 25, 1994	Sep 16, 2003
13	Bow Valley Petroleum Inc.	30	30	0	4	Sep 13, 1979	Jul 5, 1985
14	Houston Oil & Minerals Corp.	29	29	0	13	Jun 30, 1977	Mar 9, 1989
15	Reata Oil & Gas Corp.	25	25	0	8	Dec 16, 1981	Jun 1, 1988
16	Treadstone Energy Partners, LLC	25	25	0	0	Aug 7, 2012	Apr 28, 2014
17	Wheeler Operating Corporation	24	24	0	25	Jan 21, 2010	Mar 26, 2024
18	New Gulf Resources, LLC	21	21	3	0	Feb 13, 2012	Nov 13, 2015
19	Vess Oil Corporation	18	18	18	26	Feb 28, 2014	Aug 10, 2023
20	Palmer Petroleum Inc.	18	18	11	6	Jul 21, 1988	Dec 28, 2007
21	Oxoco Oil & Gas, Inc.	16	16	0	5	Oct 5, 1979	May 22, 1986
22	CML Exploration, LLC	15	15	15	16	Dec 28, 2007	Oct 28, 2026
23	Devon Energy Production Co, L.P.	14	14	8	4	Sep 12, 1994	Oct 8, 2015
24	Navidad Resources, LLC	14	14	3	1	Jul 31, 2008	Jun 8, 2012
25	Silver Oak Energy, LLC	13	13	9	0	Jun 20, 2012	Apr 6, 2015
26	Pmo	12	12	12	0	Dec 11, 2008	Jan 19, 2011
27	Setex Oil and Gas Company	12	12	6	0	Jan 27, 2000	Sep 8, 2005
28	Wildfire Energy Operating LLC	10	10	10	278	Sep 20, 2022	Mar 6, 2025
29	Parten Oil Co.	10	10	0	16	Mar 3, 1989	Jul 29, 1993
30	Sem Operating Company LLC	10	10	2	0	Jul 26, 2010	Jan 25, 2017
31	Empire Texas Operating LLC	9	9	0	75	Sep 9, 2014	Aug 3, 2026
32	Estate Oil & Gas Corp.	9	9	0	3	May 8, 1990	Aug 28, 1998
33	Bluestone Natural Resources, LLC	9	9	2	1	Jan 18, 2011	Dec 13, 2012
34	Flying Diamond Oil Corporation	9	9	0	0	Sep 21, 1977	Aug 3, 1978
35	Hawkwood Energy Operating, LLC	9	9	9	0	Apr 12, 2017	Aug 19, 2020
36	Woodbine Production Corporation	8	8	8	113	Apr 15, 2011	Aug 24, 2023
37	Famcor Oil, Inc	8	8	0	1	Jul 16, 1981	Sep 27, 1984
38	Fidelity Explor. & Prod. Co.	8	8	1	0	Mar 8, 2010	May 7, 2012
39	Mosbacher, Robert	8	8	0	0	Aug 3, 1977	Mar 31, 1982
40	Woodbine Acquisition Corporation	8	8	6	0	Jul 14, 2011	Apr 26, 2012
41	Parten Operating Inc.	7	7	2	18	Apr 3, 1995	Dec 19, 2013
42	Force 5 Energy, LLC	7	7	0	6	Sep 15, 2008	May 5, 2010
43	Tamarack Petroleum Company, Inc.	7	7	0	2	Jun 20, 1977	Aug 24, 1981
44	Delta Drilling Co.	7	7	0	1	Mar 23, 1981	Jun 12, 1981
45	Enervest Operating, L.L.C.	7	7	6	1	Jun 27, 2012	May 22, 2013
46	B.W.O.C., Inc.	7	7	7	0	Jun 3, 2004	Oct 24, 2006
47	Etx Energy, LLC	6	6	4	2	Sep 9, 2016	Feb 27, 2018
48	Chesapeake Operating, Inc.	6	6	5	0	Jul 3, 1991	Jun 3, 2011
49	Petroleum Corp. of Delaware, The	6	6	0	0	Sep 6, 1979	Aug 20, 1981
50	Wilder Exploration Company	5	5	0	4	Mar 28, 1983	Apr 2, 1984
51	Daltex Energy Company	5	5	0	3	Nov 17, 1986	Nov 3, 1987
52	Russell - Ft. Trinidad Op., LLC	5	5	0	3	Oct 26, 2004	Nov 9, 2009
53	Flamingo Operating, LLC	5	5	0	2	Apr 23, 2015	Mar 9, 2017
54	Daniel Oil Co.	5	5	0	0	Nov 26, 1979	Apr 23, 1982
55	Extide Oil Co.	5	5	0	0	Apr 14, 1980	Apr 28, 1980
56	Goldsmith, J. Paul	5	5	0	0	Oct 27, 1980	Sep 10, 1982
57	Haber Oil Company, Inc.	5	5	0	0	Dec 5, 1984	Jun 28, 1989
58	Halcon Operating Co., Inc.	5	5	5	0	Aug 10, 2012	Nov 14, 2012
59	Range Production Company	5	5	0	0	Jul 28, 2005	Dec 2, 2005
60	Redwood Energy Production, L.P.	5	5	0	0	Jul 12, 2001	Mar 28, 2006
61	Samson Lone Star, LLC	5	5	4	0	Sep 30, 2011	Mar 29, 2013
62	TXO Production Corp.	5	5	0	0	Sep 16, 1982	Mar 4, 1986
63	Cytex South Texas Operating LLC	4	4	4	6	Sep 2, 2026	Sep 21, 2026
64	Exxon Corp.	4	4	0	5	Mar 27, 1985	Jan 8, 1986
65	Northern Michigan Exp. Co.	4	4	0	2	Jul 27, 1983	Jun 18, 1984
66	Coffman, Thomas D. Inc.	4	4	0	1	Jul 14, 1980	Dec 31, 1980
67	Encana Oil & Gas(usa) Inc.	4	4	4	0	May 14, 2013	Sep 20, 2013
68	Plantation Oil & Gas, Inc.	4	4	0	0	Oct 20, 1983	May 14, 1985
69	Txco Resources Inc.	4	4	3	0	Sep 21, 2007	Apr 30, 2008
70	Union Expl. Partners, Ltd.	4	4	0	0	May 13, 1987	Sep 29, 1989
71	Edwards Petroleum Company	3	3	0	5	Jan 16, 1990	Nov 2, 1992
72	M. P. S. Prod. Co.	3	3	0	5	Oct 21, 1977	Aug 3, 1988
73	Newstar Energy of Texas L.L.C.	3	3	0	5	May 13, 1998	Oct 16, 1998
74	Union Oil Company of California	3	3	0	4	Dec 31, 1980	Apr 22, 1985
75	McBee Operating Company, L.L.C.	3	3	0	2	Jul 28, 1997	May 21, 2004
76	Swift Energy Company	3	3	0	2	Oct 23, 1981	Jan 8, 1996
77	Alltex Exploration, Inc.	3	3	1	1	May 22, 2000	Aug 22, 2011
78	Marion Corp.	3	3	0	1	Oct 25, 1977	Oct 19, 1982
79	Nucorp Energy, Inc.	3	3	0	1	Apr 6, 1981	May 19, 1982
80	Ballard Exploration Company,inc.	3	3	0	0	Dec 4, 1985	Jul 24, 1986
81	Daleco Resources	3	3	0	0	Nov 14, 1980	May 6, 1981
82	Flying Diamond Production, Inc.	3	3	0	0	Mar 20, 1978	Nov 26, 1979
83	Gibson Drlg. Co.	3	3	0	0	Dec 20, 1982	Sep 12, 1983
84	Hill, Wm. B. Production Company	3	3	0	0	Aug 1, 1988	Nov 14, 1989
85	L & B Oil Co. Inc.	3	3	0	0	Dec 12, 1984	Dec 27, 1985
86	Lomax Exploration Co.	3	3	0	0	Feb 11, 1980	Oct 2, 1981
87	Lynco Oil Corp.	3	3	0	0	Dec 8, 1978	Jul 28, 1980
88	Murexco Petroleum, Inc.	3	3	0	0	Feb 3, 1984	Sep 12, 1984
89	Panther Resources Corporation	3	3	0	0	Dec 22, 1999	Dec 22, 1999
90	Patriot E & P Company	3	3	0	0	Apr 25, 2003	Apr 19, 2004
91	Tenneco Oil Company-Tgcd	3	3	0	0	Jun 8, 1984	Apr 8, 1986
92	Texas Presco, Inc.	3	3	3	0	Oct 30, 2014	Dec 30, 2021
93	Transocean Oil, Inc.	3	3	0	0	Oct 3, 1978	Jul 8, 1980
94	Union Pacific Resources Company	3	3	3	0	Sep 5, 1997	Oct 18, 2000
95	XTO Energy Inc.	3	3	0	0	Aug 5, 2009	Dec 16, 2009
96	Cliffwood Production Co.	2	2	0	4	Jan 8, 1997	Feb 8, 2000
97	Harken Exploration Company	2	2	0	4	Jun 2, 1989	Mar 15, 1990
98	Ocean Energy, Inc.	2	2	0	4	Jun 28, 2001	Jun 28, 2002
99	Reb Petroleum Company	2	2	0	4	Jun 4, 1992	Apr 7, 1994
100	Decker Operating Co., L.L.C.	2	2	2	2	Aug 24, 2012	Jun 25, 2014
101	Mission Resources Corporation	2	2	2	2	Oct 1, 2001	Jan 27, 2003
102	Oxoco Exploration Corp.	2	2	0	2	Aug 11, 1981	Oct 21, 1981
103	Conoco Inc.	2	2	0	1	Aug 8, 1984	Mar 6, 1985
104	Crown Central Petroleum Corp.	2	2	0	1	May 7, 1982	Jun 4, 1982
105	Patterson Petroleum LP	2	2	2	1	Sep 8, 2006	Dec 11, 2006
106	Alford Petroleum Corp.	2	2	0	0	Sep 29, 1980	Jan 5, 1981
107	Appco Oil & Gas Corporation	2	2	0	0	Mar 26, 1985	Aug 21, 1985
108	Brummett, J. O.	2	2	0	0	Aug 2, 1982	Mar 10, 1983
109	Challenge Operating, Inc.	2	2	0	0	Nov 19, 1990	Oct 23, 1992
110	Cinco Operating Company, LLC	2	2	0	0	Mar 12, 2015	Mar 12, 2015
111	Cordillera Energy Prtnrs Iii,llc	2	2	0	0	Dec 12, 2007	Dec 21, 2007
112	Fairways Exploration & Prod, LLC	2	2	2	0	May 9, 2011	Jun 2, 2011
113	Geotec Exploration, Inc.	2	2	0	0	Sep 22, 1980	Dec 5, 1980
114	Gruy Petroleum Management Co.	2	2	2	0	Jan 13, 2000	May 31, 2001
115	Gulf Bend Resources, LLC	2	2	2	0	Jan 7, 2013	May 6, 2013
116	Holt Oil & Gas Corporation	2	2	0	0	Aug 6, 1981	Dec 31, 1982
117	Inexco Oil Company	2	2	0	0	Feb 23, 1984	Feb 23, 1984
118	Koch Pipeline Company, L.P.	2	2	0	0	Jun 27, 1996	Nov 27, 1996
119	Lajet Petroleum Company	2	2	0	0	Dec 5, 1983	Dec 22, 1983
120	Lapco Oil & Gas Company	2	2	0	0	May 7, 1982	Dec 4, 1984
121	Llewellin Operating Company, LLC	2	2	0	0	May 3, 2013	Dec 3, 2013
122	Lowmar Exploration Company	2	2	0	0	Jan 7, 1985	Oct 14, 1987
123	Marshall Petroleum, Inc.	2	2	0	0	Sep 11, 1980	Jun 29, 1983
124	Martineau Petroleum, Inc.	2	2	2	0	Jan 16, 2009	Jan 27, 2009
125	MCZ, Inc.	2	2	0	0	Feb 2, 1981	May 29, 1981
126	NRG Resources, Inc.	2	2	0	0	Feb 18, 1981	Jan 6, 1983
127	Pardus Oil & Gas Operating, LP	2	2	0	0	Sep 30, 2018	Jun 13, 2022
128	Pcu, Inc. of Texas	2	2	0	0	Dec 13, 1983	Jul 2, 1984
129	Peoples Energy Prod.-TX, L.P.	2	2	0	0	Dec 19, 2005	Feb 8, 2006
130	Perkins Oil Company	2	2	0	0	Mar 20, 1978	May 23, 1978
131	Petro-Lewis Corporation	2	2	0	0	Jun 25, 1981	Aug 21, 1981
132	Petromark Minerals INC.******P5	2	2	0	0	Sep 26, 1977	Jun 20, 1978
133	Reb Petroleum Co.	2	2	0	0	Jun 6, 1977	Jun 6, 1977
134	Rme Petroleum Company	2	2	2	0	Feb 21, 2002	Sep 17, 2002
135	Saba Energy of Texas, Inc.	2	2	0	0	Nov 6, 1995	Apr 7, 1997
136	Sarbb Co., The	2	2	0	0	Jun 7, 1977	Oct 17, 1977
137	Strata Energy, Inc.	2	2	0	0	Nov 14, 1977	Dec 9, 1977
138	TA-Lee-HO Energy Corporation	2	2	0	0	Oct 23, 1981	Jan 31, 1983
139	Tartan Oil & Gas	2	2	0	0	Dec 31, 1981	Sep 10, 1982
140	TC3 Energy Services Company	2	2	1	0	Oct 1, 2002	Mar 4, 2004
141	Texas, L. Petroleum, Inc.	2	2	0	0	Apr 21, 1982	Aug 26, 1982
142	Yates Exploration Co.	2	2	0	0	Aug 30, 1978	Jun 18, 1979
143	Southwest Operating, Inc.-Tyler	1	1	0	8	Sep 19, 2024	Sep 19, 2024
144	Faulconer, Vernon E., Inc.	1	1	0	7	Mar 11, 1997	Mar 11, 1997
145	Great Western Onshore Inc.	1	1	0	4	Jul 1, 1991	Jul 1, 1991
146	Crimson Exploration Inc.	1	1	0	3	Mar 16, 2006	Mar 16, 2006
147	Gsi Oil & Gas, Inc.	1	1	0	3	Sep 30, 2015	Sep 30, 2015
148	Apache Corporation	1	1	0	2	Aug 20, 1991	Aug 20, 1991
149	Buffco Production Inc.	1	1	0	2	Apr 12, 2021	Apr 12, 2021
150	Adobe Resources Corporation	1	1	0	1	Jun 1, 1987	Jun 1, 1987
151	Americus Resources, Inc.	1	1	0	1	Dec 12, 1986	Dec 12, 1986
152	Barco Oil & Gas Co.	1	1	0	1	Mar 18, 1987	Mar 18, 1987
153	Edisto Resources Corporation	1	1	0	1	Sep 1, 1989	Sep 1, 1989
154	GWR Operating Co.	1	1	0	1	Jul 21, 1989	Jul 21, 1989
155	Lacrosse Exploration LLC	1	1	0	1	Aug 21, 2018	Aug 21, 2018
156	Lear Petroleum Exploration, Inc.	1	1	0	1	Feb 2, 1981	Feb 2, 1981
157	Lingen Exploration, Inc.	1	1	0	1	Dec 22, 1980	Dec 22, 1980
158	Mobil Producing TX. & N.M. Inc.	1	1	0	1	May 21, 1984	May 21, 1984
159	Moon Operating, Inc.	1	1	0	1	Dec 5, 1990	Dec 5, 1990
160	Sage Energy Company	1	1	1	1	Mar 19, 1992	Mar 19, 1992
161	Smith Petroleum Company	1	1	0	1	Mar 13, 1984	Mar 13, 1984
162	Strago Petroleum Corporation	1	1	0	1	Jun 5, 1984	Jun 5, 1984
163	Talon Energy & Development Corp.	1	1	0	1	Jul 2, 1987	Jul 2, 1987
164	Tepee Petroleum Co., Inc.	1	1	0	1	Nov 13, 1998	Nov 13, 1998
165	Abco Energy Corporation	1	1	0	0	Feb 16, 1981	Feb 16, 1981
166	Adena Exploration, Inc.	1	1	0	0	Jan 15, 1985	Jan 15, 1985
167	Alford Oil Corporation	1	1	0	0	Sep 8, 1983	Sep 8, 1983
168	Allco Exploration Co.	1	1	0	0	Mar 22, 1982	Mar 22, 1982
169	Anadarko E&P Company LP	1	1	1	0	Aug 20, 2003	Aug 20, 2003
170	Arcadia Refining Co.	1	1	0	0	Dec 4, 1984	Dec 4, 1984
171	Arrow Exploration Company	1	1	1	0	Mar 19, 1997	Mar 19, 1997
172	Austral Oil Company Incorporated	1	1	0	0	Oct 9, 1992	Oct 9, 1992
173	Bass Enterprises Production Co.	1	1	0	0	Apr 17, 1980	Apr 17, 1980
174	Bellwether Exploration Company	1	1	1	0	Nov 10, 2000	Nov 10, 2000
175	Bull Run Resources, LLC	1	1	1	0	Mar 27, 2026	Mar 27, 2026
176	Can-Tex Energy Corp.	1	1	0	0	Oct 12, 2001	Oct 12, 2001
177	CH4 Energy II, LLC	1	1	0	0	Dec 13, 2013	Dec 13, 2013
178	Christico Petroleum Company	1	1	1	0	Aug 6, 1990	Aug 6, 1990
179	Convest Energy & Lake Ronel	1	1	0	0	Nov 16, 1977	Nov 16, 1977
180	Cypress Partners, Inc.	1	1	0	0	Mar 25, 1997	Mar 25, 1997
181	Dallas Production, Inc.	1	1	0	0	Jun 12, 2006	Jun 12, 2006
182	Daniel Mineral Development, Inc.	1	1	0	0	May 28, 2003	May 28, 2003
183	Daniel Resource Development,inc.	1	1	0	0	Mar 1, 1994	Mar 1, 1994
184	Daystar Resources, Ltd.	1	1	0	0	Feb 25, 1999	Feb 25, 1999
185	Dome Petroleum Corp	1	1	0	0	Sep 21, 1981	Sep 21, 1981
186	Don Co	1	1	0	0	Feb 8, 1983	Feb 8, 1983
187	Don Company, The	1	1	0	0	Jul 30, 1981	Jul 30, 1981
188	Dorchester Exploration, Inc.	1	1	0	0	Sep 26, 1978	Sep 26, 1978
189	Drake Energy, Inc.	1	1	0	0	Sep 21, 1981	Sep 21, 1981
190	East Texas Drilling Co., Inc.	1	1	0	0	Dec 30, 1977	Dec 30, 1977
191	Ellsworth, H. P. O&G Properties	1	1	0	0	Mar 30, 1999	Mar 30, 1999
192	Emerald Operating Company, Inc.	1	1	1	0	Dec 9, 2004	Dec 9, 2004
193	Endeavor Natural Gas, LP	1	1	1	0	Apr 29, 2011	Apr 29, 2011
194	Enercorp Resources, Inc.	1	1	0	0	Dec 19, 1985	Dec 19, 1985
195	Estate Oil&gas Corp. R.H. Bishop	1	1	0	0	Jun 20, 1978	Jun 20, 1978
196	Euratex Corp.	1	1	0	0	Aug 27, 1986	Aug 27, 1986
197	Forcenergy Inc	1	1	0	0	Nov 14, 1997	Nov 14, 1997
198	Georgetown Exploration, Inc.	1	1	0	0	Dec 23, 1985	Dec 23, 1985
199	Geosouthern Energy Corporation	1	1	0	0	Dec 2, 1981	Dec 2, 1981
200	Harken Energy Corporation	1	1	0	0	Nov 15, 1989	Nov 15, 1989
201	Hea Exploration, Inc.	1	1	0	0	Jan 11, 1983	Jan 11, 1983
202	Highland Resources-G. R. Brown	1	1	0	0	Aug 23, 1978	Aug 23, 1978
203	Humble Resources Company	1	1	0	0	Dec 23, 1985	Dec 23, 1985
204	King Resources International,inc	1	1	0	0	Mar 11, 1993	Mar 11, 1993
205	Lawless Energy, Inc.	1	1	0	0	Nov 29, 1984	Nov 29, 1984
206	Long Trusts, The	1	1	1	0	Jun 25, 2014	Jun 25, 2014
207	Lucas Energy, Inc.	1	1	0	0	Nov 5, 2013	Nov 5, 2013
208	Lynn Oil Company	1	1	0	0	Aug 4, 1980	Aug 4, 1980
209	McTan Corporation	1	1	0	0	Feb 13, 1985	Feb 13, 1985
210	Medallion Petroleum, Inc.	1	1	0	0	Jun 19, 1990	Jun 19, 1990
211	Milrey Inc.	1	1	0	0	Mar 28, 1983	Mar 28, 1983
212	Minnick Resources Management Inc	1	1	0	0	Sep 3, 1980	Sep 3, 1980
213	Morris Production Company	1	1	0	0	Jul 22, 1985	Jul 22, 1985
214	Moss, Jerry Don	1	1	0	0	Jul 10, 1981	Jul 10, 1981
215	Murphy, K. P. Oil Operator	1	1	1	0	Mar 5, 1999	Mar 5, 1999
216	Nationwide Oil & Gas Corporation	1	1	0	0	Dec 28, 1981	Dec 28, 1981
217	Newfield Exploration Company	1	1	0	0	Apr 13, 2011	Apr 13, 2011
218	Oklatex Oil & Gas Company	1	1	0	0	Jul 19, 1988	Jul 19, 1988
219	Opex Energy, LLC	1	1	1	0	Feb 1, 2006	Feb 1, 2006
220	Oxoco Exploration&production,inc	1	1	0	0	May 25, 1983	May 25, 1983
221	Pierce Petroleum	1	1	0	0	Nov 25, 1987	Nov 25, 1987
222	Pinnergy, Ltd.	1	1	0	0	Apr 1, 2013	Apr 1, 2013
223	Raider Exploration, Inc.	1	1	0	0	Dec 3, 1984	Dec 3, 1984
224	Red-X Expl and Prod, L.L.C.	1	1	0	0	Jul 14, 2009	Jul 14, 2009
225	Riley, Jim	1	1	0	0	Oct 4, 1977	Oct 4, 1977
226	Rosewood Resources (Pros), Inc.	1	1	0	0	Nov 8, 1984	Nov 8, 1984
227	Sabalo Exploration Operating,llc	1	1	1	0	Mar 31, 2014	Mar 31, 2014
228	Samson Hydrocarbons Company	1	1	0	0	Aug 6, 1996	Aug 6, 1996
229	Samson Resources Company	1	1	0	0	Jun 16, 1992	Jun 16, 1992
230	Seven Energy LLC	1	1	0	0	Aug 28, 2006	Aug 28, 2006
231	Sonat Exploration Company -Tyler	1	1	0	0	Jan 7, 1993	Jan 7, 1993
232	Stallion Operating, LLC	1	1	0	0	Mar 19, 2021	Mar 19, 2021
233	Stockard Drilling, Inc.	1	1	0	0	Sep 10, 1987	Sep 10, 1987
234	Sulphur River Exploration, Inc.	1	1	0	0	Feb 21, 1978	Feb 21, 1978
235	Sun Operating LLC	1	1	1	0	Jun 26, 2012	Jun 26, 2012
236	Taylor, Thomas J. & Associates	1	1	0	0	Jun 12, 1985	Jun 12, 1985
237	Teal Exploration, Ltd.	1	1	0	0	Jul 13, 1984	Jul 13, 1984
238	Tenneco Oil Co.	1	1	0	0	Jan 4, 1982	Jan 4, 1982
239	Texas Eastern Exploration Co.	1	1	0	0	Apr 27, 1983	Apr 27, 1983
240	Texas Oil & Gas Corp.	1	1	0	0	Dec 31, 1980	Dec 31, 1980
241	Tierra Petroleum Corp.	1	1	0	0	Dec 21, 1984	Dec 21, 1984
242	Tracy Engineering Co.	1	1	0	0	Mar 16, 1982	Mar 16, 1982
243	Txu Lone Star Pipeline	1	1	0	0	Apr 26, 2002	Apr 26, 2002
244	Ultramar Oil and Gas Limited	1	1	0	0	Feb 8, 1989	Feb 8, 1989
245	Umc Petroleum Corporation	1	1	0	0	Jul 19, 1994	Jul 19, 1994
246	United Resources LP	1	1	0	0	Feb 22, 2011	Feb 22, 2011
247	Viceroy Petroleum GP, LLC	1	1	0	0	Dec 23, 2009	Dec 23, 2009
248	WCS Oil and Gas Corporation	1	1	0	0	Apr 24, 1986	Apr 24, 1986
249	Weber Energy Corporation	1	1	1	0	Mar 19, 1993	Mar 19, 1993
250	Westchase Petroleum Corp.	1	1	0	0	Nov 22, 1978	Nov 22, 1978
251	Williams, Clayton W., Jr.	1	1	0	0	Jul 20, 1977	Jul 20, 1977
252	Williams, Clayton W., Jr., Inc.	1	1	0	0	Jun 28, 1989	Jun 28, 1989
253	Williams Expl Co a Delaware Corp	1	1	0	0	Sep 7, 1978	Sep 7, 1978
254	Willis Enterprises	1	1	0	0	Feb 14, 1985	Feb 14, 1985
255	Y'aeta Oil & Gas Company	1	1	0	0	May 20, 1991	May 20, 1991
256	Yates Energy Co.	1	1	0	0	Aug 29, 1980	Aug 29, 1980
257	Zenith Petroleum Corporation	1	1	0	0	Jul 3, 1989	Jul 3, 1989
258	Zin-Tech, Inc.	1	1	0	0	May 14, 1987	May 14, 1987
259	E2 Operating LLC	—	0	0	60	—	—
260	Weber Energy Corporation	—	0	0	43	—	—
261	Perryman Operating Co.	—	0	0	16	—	—
262	Reed Exploration LLC	—	0	0	16	—	—
263	Trailblazer Energy Resources LLC	—	0	0	16	—	—
264	Goldsmith Operating LLC	—	0	0	8	—	—
265	Gulf Oil Corp.	—	0	0	8	—	—
266	Sandel Operating Company	—	0	0	6	—	—
267	West Alice Sneed Trust	—	0	0	6	—	—
268	Digger Energy LLC.	—	0	0	5	—	—
269	Deguello Operating LLC	—	0	0	4	—	—
270	Omimex Energy Inc.	—	0	0	4	—	—
271	Embry Solutions Inc.	—	0	0	3	—	—
272	Mitchell Geo. & Assoc. Inc.	—	0	0	3	—	—
273	Northfield Enterprises	—	0	0	3	—	—
274	Oil Well Recovery Services Inc.	—	0	0	3	—	—
275	Ows Energy Inc.	—	0	0	3	—	—
276	Samson Lone Star LP	—	0	0	3	—	—
277	Valence Operating Company	—	0	0	3	—	—
278	Al-TX Operating Inc.	—	0	0	2	—	—
279	A & P Oil & Gas	—	0	0	2	—	—
280	Cico Oil & Gas Company	—	0	0	2	—	—
281	Contango Resources LLC	—	0	0	2	—	—
282	Faulconer Energy LLC	—	0	0	2	—	—
283	Glen Rose Corporation	—	0	0	2	—	—
284	Holley Oil Company LLC	—	0	0	2	—	—
285	Huffington Roy M. Inc.	—	0	0	2	—	—
286	J & M Well Salvage Company	—	0	0	2	—	—
287	Lakeshore Operating LLC	—	0	0	2	—	—
288	Lone Star Prod. Co.	—	0	0	2	—	—
289	Maxmin Resources LLC	—	0	0	2	—	—
290	Moore Petroleum Service Inc.	—	0	0	2	—	—
291	NZ Operating Company Inc.	—	0	0	2	—	—
292	Pace John W.	—	0	0	2	—	—
293	Perryman W.C. Operating Co. Inc	—	0	0	2	—	—
294	Sue-Ann Oil & Gas Company	—	0	0	2	—	—
295	Texaco Inc.	—	0	0	2	—	—
296	Viceroy Petroleum LP	—	0	0	2	—	—
297	Westchase Production Inc.	—	0	0	2	—	—
298	Williams Clayton Energy Inc.	—	0	0	2	—	—
299	Advance Hydrocarbon Corporation	—	0	0	1	—	—
300	Alexander Land & Dev. Co. Inc.	—	0	0	1	—	—

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