COUNTIES · WEBB · OPERATORS

Webb 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	Lewis Petro Properties, Inc.	2,231	2,231	1,522	2,196	Apr 21, 1981	Oct 30, 2026
2	Conoco Inc.	1,288	1,288	0	155	Jan 22, 1980	Sep 5, 2003
3	SM Energy Company	983	983	964	785	Jul 17, 2009	Oct 27, 2026
4	EOG Resources, Inc.	811	811	463	391	Apr 16, 1997	Aug 17, 2026
5	Rosetta Resources Operating LP	664	664	467	565	Dec 7, 2005	Oct 20, 2026
6	Enron Oil & Gas Company	526	526	0	90	Jan 14, 1987	Sep 17, 1999
7	Killam Oil Co., Ltd.	456	456	36	554	Aug 24, 1994	Aug 31, 2026
8	Mobil Producing TX. & N.M. Inc.	393	393	0	29	Feb 13, 1980	Jan 10, 2002
9	Transamerican Natural Gas Corp.	353	353	0	19	Mar 13, 1980	Aug 30, 1993
10	Transtexas Gas Corporation	297	297	3	36	Jun 2, 1993	Sep 23, 1998
11	Conocophillips Company	295	295	0	312	Jan 22, 1997	Sep 5, 2012
12	Kerns O & G, Inc.	243	243	0	48	May 30, 1978	Dec 27, 2004
13	Shell Western E&P	242	242	235	0	Sep 24, 2010	Jan 7, 2014
14	Legend Natural Gas III, LP	238	238	3	2	Oct 18, 2007	Aug 6, 2010
15	SN Operating, LLC	238	238	236	0	Apr 11, 2012	Oct 3, 2019
16	Chevron U. S. A. Inc.	226	226	0	49	Jun 29, 1977	Jun 9, 2010
17	Michael Petroleum Corporation	217	217	0	39	Dec 10, 1985	Dec 7, 2001
18	Chesapeake Operating, Inc.	216	216	198	13	Jan 5, 2006	Oct 1, 2014
19	Laredo Energy	203	203	144	2	Oct 25, 2004	Dec 10, 2014
20	Silverbow Resources Oper, LLC	179	179	179	0	Jul 20, 2017	Apr 29, 2026
21	Laredo Energy Operating, LLC	163	163	157	9	Aug 12, 2013	Oct 12, 2022
22	Crimson Energy Company, LC	155	155	0	5	Nov 28, 2000	Mar 10, 2004
23	Escondido Resources Oper Co, LLC	151	151	148	88	Jun 9, 2009	Feb 9, 2026
24	St. Mary Land & Exploration Co.	151	151	49	25	Mar 10, 2003	Jun 29, 2010
25	Amoco Production Company	146	146	0	6	Sep 12, 1980	Jul 5, 1996
26	Columbus Energy Corp.	143	143	0	28	Jan 8, 1985	Jul 9, 2003
27	Sanchez-O'Brien Oil & Gas Corp.	141	141	1	34	Nov 15, 1978	Aug 27, 1996
28	Kimmeridge Texas Gas, LLC	140	140	140	3	Sep 25, 2014	Oct 17, 2025
29	HNG Oil Company	132	132	0	8	Oct 14, 1977	Jan 30, 1987
30	Forest Oil Corporation	131	131	0	7	May 21, 1979	Jul 23, 2008
31	Swift Energy Operating, LLC	129	129	106	1	Jan 6, 2009	Jan 9, 2017
32	Chesapeake Operating, L.L.C.	129	129	129	0	Oct 28, 2014	Apr 6, 2023
33	GHR Energy Corp.	127	127	0	0	Apr 16, 1979	Nov 6, 1985
34	Killam & Hurd, Ltd.	126	126	0	27	Jun 7, 1977	Sep 20, 1983
35	Houston Exploration Company, The	125	125	0	2	Apr 27, 1992	Dec 13, 2006
36	Escondido Resources II, LLC	124	124	100	0	Jul 23, 2008	Dec 13, 2016
37	Virtex Petroleum Company, Inc.	112	112	0	4	Aug 10, 2000	Dec 18, 2007
38	Anadarko E&P Company LP	110	110	109	0	Mar 14, 2007	Nov 14, 2012
39	Petro-Lewis Corporation	99	99	0	15	Jul 27, 1978	Apr 17, 1986
40	Huber Energy L.P.	96	96	0	15	Mar 7, 2003	Dec 1, 2006
41	Tri-C Resources, Inc.	91	91	0	2	Mar 8, 1990	Jul 12, 1996
42	Good Hope Refineries, Inc.	89	89	0	5	Jun 24, 1977	Jul 29, 1981
43	TDC Engineering, Inc.	84	84	0	16	Apr 19, 1982	Apr 22, 1992
44	Blackbrush O & G, Inc.	83	83	0	23	Dec 28, 2004	Nov 10, 2009
45	Killam Oil Company	80	80	0	38	Nov 8, 1979	Feb 18, 1994
46	Sonat Exploration Co. - Houston	73	73	0	5	Aug 11, 1993	Dec 15, 1999
47	Calpine Natural Gas L.P.	71	71	0	6	Jun 26, 2002	Sep 21, 2005
48	Anadarko E&P Onshore LLC	71	71	71	0	Aug 5, 2011	Dec 22, 2014
49	Gulf Oil Corp.	68	68	0	10	Jun 16, 1977	Apr 30, 1985
50	Gose, Steve	66	66	0	3	Sep 30, 1977	Dec 31, 1980
51	Fasken Oil and Ranch, Ltd.	63	63	43	91	May 20, 1998	Sep 17, 2026
52	GHR Enrgy.corp-Amer.coastal Corp	62	62	0	0	Sep 2, 1982	Aug 2, 1985
53	Consolidated Oil & Gas, Inc.	60	60	0	15	Jul 1, 1977	Oct 8, 1985
54	Ricochet Energy, Inc.	60	60	0	13	Dec 30, 1994	Mar 22, 2010
55	Devon Energy Production Co, L.P.	59	59	29	4	Apr 5, 2004	Sep 22, 2011
56	Monterrey Petroleum Corp.	58	58	0	18	Mar 3, 1978	Jul 3, 1984
57	Cox, Edwin L. & Cox, Berry R.	58	58	0	1	Oct 14, 1981	Apr 18, 1986
58	Getty Oil Co.	58	58	0	0	May 1, 1978	Oct 18, 1989
59	Hilcorp Energy Company	57	57	0	1,532	Jun 7, 2014	Jun 1, 2022
60	Basic Earth Science Systems,inc.	57	57	0	38	Aug 14, 1978	Feb 5, 2001
61	North Central Oil Corp.	52	52	0	21	Nov 16, 1979	May 9, 2003
62	Shar-Alan Oil Company	51	51	0	4	Jun 13, 1977	Dec 8, 1978
63	Caturus Energy, LLC	46	46	46	641	Mar 18, 2025	Oct 9, 2026
64	Columbus Energy, LLC	44	44	0	375	May 13, 2008	Feb 12, 2021
65	High Island Oil Corporation	43	43	0	6	Nov 20, 1998	Jul 8, 2004
66	XTO Energy Inc.	42	42	41	25	Jan 25, 2010	Mar 12, 2012
67	Hughes & Hughes	41	41	0	16	Dec 28, 1977	Dec 15, 1983
68	Edge Petroleum Oper. Co., Inc.	40	40	0	1	Apr 22, 2002	Jul 3, 2007
69	Escondido Resources GP, LLC	40	40	0	0	Feb 16, 2005	Aug 7, 2006
70	Pursuit Oil & Gas STX, LLC	39	39	39	31	Jul 22, 2019	Sep 24, 2026
71	Union Pacific Resources Company	37	37	8	0	Sep 20, 1996	Jan 29, 1998
72	Troubadour Operating, LLC	35	35	35	18	Mar 11, 2022	Oct 30, 2026
73	Goldking Prod. Co.	35	35	0	1	Jun 22, 1977	Feb 14, 1984
74	Combustion Products Corp.	35	35	0	0	May 12, 1978	May 23, 1979
75	Hawn Bros. & Venus Oil Co.	33	33	0	3	Aug 11, 1977	May 24, 1993
76	Burns, R. L. Corporation	31	31	0	0	Jun 10, 1977	Jul 17, 1978
77	Cox Oil & Gas, Inc.	30	30	0	0	Aug 5, 1986	Jan 2, 1992
78	Ageron Energy, LLC	29	29	29	0	Sep 30, 2018	Dec 18, 2025
79	Huber Energy Panhandle L.P.	29	29	0	0	Jun 24, 2003	Sep 23, 2004
80	Blocker Exploration Co.	28	28	0	0	Mar 3, 1978	Mar 11, 1980
81	Middleton Oil Company	27	27	0	71	Aug 23, 1977	Mar 12, 2013
82	Eex Operating, L.P.	27	27	0	0	Apr 13, 2000	Apr 10, 2003
83	Newton Oil & Gas Corporation	26	26	0	1	Jun 3, 1980	May 30, 1984
84	Bayside Petroleum Corp.	26	26	0	0	Mar 5, 1979	Jul 28, 1982
85	Sabco Operating Company	26	26	0	0	Mar 31, 2004	Jun 21, 2006
86	Trans Delta Oil & Gas Co., Inc.	26	26	0	0	Jul 6, 1977	Sep 10, 1980
87	TXO Production Corp.	25	25	0	11	Nov 14, 1977	Jul 9, 1985
88	Bar M Petroleum Co., Inc.	25	25	0	6	Dec 6, 1978	Sep 4, 1981
89	U. S. Operating, Inc.	25	25	0	4	Oct 30, 1979	Feb 15, 1991
90	Thorp Petroleum Corporation	25	25	0	1	Aug 6, 1999	Mar 28, 2007
91	Silver Hill Energy Operating LLC	25	25	25	0	Sep 3, 2021	May 26, 2023
92	Awp Operating Company	24	24	0	18	Jun 14, 2001	Apr 30, 2008
93	Mitsui E&P USA LLC	23	23	23	28	Feb 17, 2023	Mar 25, 2026
94	Hopson, Fred S.	23	23	0	8	Dec 31, 1980	Aug 2, 1991
95	Texaco Inc.	23	23	0	7	Feb 13, 1979	Jan 7, 1991
96	Stampede Energy Corp.	23	23	0	6	Jun 28, 1977	Nov 25, 1996
97	Lobo Resources, Ltd.	23	23	0	3	Dec 19, 1985	Sep 25, 1992
98	RBD-PNB Operating Agency	23	23	0	1	Nov 5, 1985	Oct 24, 1988
99	Javelin Energy Partners Mgmt LLC	22	22	22	176	Sep 18, 2023	Jul 21, 2026
100	Mohican Operating, L.L.C.	21	21	0	2	Sep 24, 2010	Nov 10, 2014
101	Fremont Energy Corp.	20	20	0	4	Aug 3, 1977	Jul 1, 1982
102	Moore McCormack Production, Inc.	20	20	0	0	Jan 4, 1978	Oct 4, 1983
103	Evans, S. Lavon Jr. Oper. Co.	19	19	0	12	Jul 8, 2005	Jun 1, 2009
104	Mueller Engineering Corp.	19	19	0	12	Jan 20, 1981	Dec 6, 2000
105	Price Drilling & Exploration Co.	19	19	0	2	Dec 27, 1977	Mar 7, 1995
106	Austin Resources Corporation	19	19	0	1	Jul 28, 1993	Apr 16, 1996
107	Comstock Oil & Gas, LP	19	19	19	0	Mar 29, 2019	Mar 29, 2019
108	Rockford Energy Partners II, LLC	19	19	0	0	Feb 2, 2005	Mar 30, 2007
109	Virtex Operating Company, Inc.	18	18	0	17	Mar 7, 2008	Mar 18, 2010
110	Legend Natural Gas II, LP	18	18	0	9	Feb 24, 2005	Oct 20, 2005
111	Dynamic Production, Inc.	18	18	0	5	Oct 16, 1985	Nov 21, 2014
112	Metano Energy, LP	18	18	0	0	Oct 11, 2005	May 17, 2007
113	Michael Petr. & Hurd Ent., Ltd.	18	18	0	0	Aug 24, 1990	Nov 18, 1992
114	SN EF Maverick, LLC	18	18	18	0	Jul 19, 2017	Dec 16, 2022
115	TXO Minerals, Inc.	18	18	0	0	May 7, 1982	Jul 14, 1983
116	Texas Oil & Gas Corp.	17	17	0	11	Jun 7, 1977	Oct 15, 1979
117	Iec Corp.	17	17	0	0	Apr 19, 1979	Aug 7, 1979
118	Kerr-McGee Oil & Gas Onshore LP	17	17	0	0	Jul 14, 2006	Aug 19, 2008
119	Sanchez-O'Brien Minerals Corp.	17	17	0	0	Jul 25, 1979	Oct 9, 1980
120	Dewbre Petroleum Corporation	16	16	0	21	Nov 13, 2003	Sep 18, 2015
121	Coastal Oil & Gas Corporation	16	16	0	5	Feb 17, 1982	Oct 9, 1985
122	Sanchez Oil & Gas Corporation	16	16	0	5	Aug 14, 1998	Jan 11, 2017
123	Calpine Natural Gas Company	16	16	0	0	May 8, 2001	Jan 23, 2002
124	Evolution Operating Co., Inc.	16	16	0	0	Apr 23, 2009	Oct 26, 2012
125	Arco Oil & Gas Co.	15	15	0	3	Dec 22, 1980	Aug 23, 1990
126	Houston Oil & Minerals Corp.	15	15	0	3	Feb 10, 1978	May 31, 1983
127	Chroma Operating, Inc.	15	15	0	2	Apr 28, 2009	Aug 9, 2012
128	Superior Oil Company, The	15	15	0	1	Apr 27, 1978	Jul 10, 1984
129	Ageron Ironroc Energy, LLC	15	15	15	0	Oct 11, 2021	Jan 26, 2023
130	Crescent Energy Operating, LLC	14	14	14	448	May 26, 2026	Sep 30, 2026
131	Tesoro E&P Company, L.P.	14	14	0	1	May 18, 1995	May 14, 1998
132	Mesa Petroleum Co.	14	14	0	0	Jun 14, 1977	May 20, 1982
133	Zero Corporation of Texas	13	13	0	14	Oct 14, 1977	Jun 11, 1982
134	Rio Grande E&P II, LLC	13	13	13	7	Oct 18, 2022	Jul 29, 2026
135	Kebo Oil & Gas, Inc.	13	13	0	3	Jun 13, 1990	Dec 31, 2018
136	Beacon Exploration Company	13	13	0	2	Dec 3, 1984	Jul 10, 1989
137	Mohican Oil & Gas, L.L.C.	13	13	0	1	Jan 12, 2007	Jul 7, 2010
138	Rio Grande E&P, LLC	13	13	13	0	Sep 6, 2019	Oct 12, 2021
139	Rollert Co., Inc., The	13	13	0	0	Feb 13, 1978	Oct 31, 1979
140	Zachry Exploration, Ltd.	13	13	0	0	Dec 19, 2002	Aug 3, 2005
141	Buck, George	12	12	0	18	Sep 27, 1977	Feb 15, 1994
142	Graham Royalty, Ltd.	12	12	0	10	Jun 16, 1986	Jun 30, 1992
143	Davis & Forbes	12	12	0	9	Jun 9, 1977	Oct 17, 1990
144	Endeavor Natural Gas, LP	12	12	12	7	Jun 1, 2018	Feb 2, 2023
145	Newfield Exploration Company	12	12	0	7	Feb 24, 2004	May 15, 2007
146	American Exploration Company	12	12	0	2	Apr 27, 1989	Feb 19, 1991
147	Peak Energy Corporation	12	12	0	2	Oct 13, 2000	Sep 20, 2006
148	Headington Energy Partners, LLC	12	12	12	0	Oct 1, 2021	Jun 6, 2022
149	Zachry Exploration, Inc.	11	11	0	3	Nov 21, 1995	Nov 8, 2000
150	Smith Production Inc.	11	11	0	1	Dec 11, 2017	Oct 3, 2023
151	Denali Oil & Gas Management, LLC	11	11	0	0	Aug 4, 2004	Mar 30, 2005
152	Enterprise Products Operatingllc	11	11	0	0	May 5, 2008	Oct 2, 2020
153	Huber, J. M., Corporation	11	11	0	0	Apr 16, 2004	May 13, 2004
154	Murexco Petroleum, Inc.	11	11	0	0	Dec 7, 1984	Jul 9, 1986
155	Hughes, Dan A. Company	10	10	0	14	Feb 20, 1990	Jul 9, 1997
156	EP Operating Company	10	10	0	6	Jan 30, 1986	Nov 13, 1990
157	Calibogue Corporation	10	10	0	5	Apr 26, 1983	Nov 30, 1984
158	Pogo Producing Company	10	10	0	4	Jul 7, 1988	Oct 12, 2007
159	Cody Energy LLC	10	10	0	3	May 10, 1999	Jun 13, 2011
160	San Isidro Development Co, L. C.	10	10	1	3	Jul 15, 2005	Mar 27, 2019
161	Axio Production Company, L.P.	10	10	0	1	Dec 30, 2003	Dec 15, 2005
162	Stroube Production Co., Inc.	10	10	0	1	Jun 29, 1978	Jun 9, 1980
163	Aquitaine Mining Corp.	10	10	0	0	Jun 2, 1982	Jun 2, 1982
164	Petrorey Div. Killam Oil Co.	10	10	0	0	Feb 22, 1983	Apr 29, 1983
165	XCL-Texas, Inc.	9	9	0	6	Mar 9, 1992	Jan 29, 1998
166	Sendero Oil Company	9	9	0	4	Nov 28, 1977	Apr 24, 1989
167	Mobil Oil Corporation	9	9	0	2	Jun 7, 1977	Dec 17, 1979
168	Central Producers, Inc.	9	9	0	1	Apr 7, 1981	Oct 23, 1989
169	Hawn Brothers	9	9	0	1	Aug 11, 1977	Nov 22, 1983
170	Pursuit Oil & Gas, LLC	9	9	9	1	Sep 19, 2017	Aug 7, 2019
171	Comstock Oil & Gas, LLC	9	9	9	0	Mar 29, 2019	Apr 9, 2020
172	Enserch Exploration, Inc	9	9	0	0	Jan 26, 1978	Oct 28, 1997
173	Enterprise Products Operating LP	9	9	0	0	Oct 18, 2005	Sep 11, 2007
174	Nucorp Energy, Inc.	9	9	0	0	Aug 7, 1979	Nov 2, 1979
175	TBM Catarina, LLC	8	8	8	311	Nov 6, 2024	Sep 29, 2025
176	Circle-S Energy, LLC	8	8	8	17	Dec 4, 2024	Jan 8, 2026
177	Petropoint Energy Operating, LLC	8	8	0	8	Nov 5, 2012	Jan 13, 2014
178	Everest Minerals Corp.	8	8	0	3	Dec 3, 1981	Aug 16, 1982
179	Pennzoil Producing Co.	8	8	0	1	Jul 6, 1977	Dec 14, 1982
180	Tesoro Petroleum Corporation	8	8	0	1	Jul 18, 1977	Nov 30, 1983
181	3TEC Energy Corporation	8	8	0	0	Sep 13, 2000	Apr 1, 2003
182	Blocker Energy, Inc.	8	8	0	0	Mar 3, 1978	Sep 7, 1978
183	Bridge Oil Company, L. P.	8	8	0	0	Nov 8, 1991	Jun 8, 1994
184	Cobra Operating Company	8	8	0	0	Jun 16, 1997	Feb 25, 1998
185	Esenjay Petroleum Corp.	8	8	0	0	Sep 11, 1985	Mar 2, 1995
186	Hamilton, J. R. & Archer, J.R.	8	8	0	0	Apr 11, 1988	Mar 5, 1992
187	Lacy, F. B. Inc.	8	8	0	0	Jul 26, 1978	May 1, 1986
188	Morris Exploration, Inc.	8	8	0	0	Jul 6, 1981	Feb 27, 1987
189	Phoenix Fund, Inc.	8	8	0	0	Dec 14, 1983	Nov 8, 1988
190	United Oil & Minerals L. P.	8	8	0	0	Aug 15, 2002	Apr 28, 2003
191	Yarborough, W. B.	8	8	0	0	Jul 1, 1977	Nov 19, 1993
192	Hughes, Dan A. Company, L.P.	7	7	3	14	Aug 17, 2006	Dec 8, 2022
193	Valence Operating Company	7	7	0	9	Jun 24, 1993	Aug 25, 2009
194	Tana Oil & Gas Corp.	7	7	0	6	Oct 21, 1977	Nov 12, 1987
195	Texaco E & P Inc.	7	7	0	5	Nov 5, 1990	Dec 2, 1992
196	Cox, Martin Regan	7	7	0	4	Sep 8, 2000	Aug 21, 2007
197	Four Star Oil and Gas Company	7	7	0	4	May 8, 1991	Jan 8, 2002
198	Alco Drlg. Co.	7	7	0	3	May 8, 1979	Sep 7, 1989
199	CNR Resources, Inc.	7	7	0	0	Apr 7, 1981	Jul 14, 1981
200	Eex Corporation	7	7	1	0	Jun 18, 1999	Jan 26, 2000
201	Freer Oil Co.	7	7	0	0	Feb 9, 1979	Apr 13, 1987
202	Keck, W. M. II	7	7	0	0	Jan 29, 1986	Nov 14, 1986
203	Ladd Petroleum Corp.	7	7	0	0	May 10, 1983	Nov 5, 1984
204	Pg&e Texas Pipeline, L.P.	7	7	0	0	Sep 15, 1999	Oct 23, 2000
205	Reh Energy, Inc.	7	7	0	0	Jun 12, 1990	May 18, 1994
206	Texas, L. Petroleum, Inc.	7	7	0	0	Sep 19, 1990	Feb 22, 1991
207	Bluestone Natural Res. II, LLC	6	6	0	6	Oct 10, 2013	Nov 13, 2015
208	Strand Energy, L.C.	6	6	6	6	Jul 7, 2025	Jan 22, 2026
209	Cordele Development Corporation	6	6	0	5	Nov 19, 1996	Jun 22, 2004
210	Geonatural Resources, Inc.	6	6	0	5	Apr 13, 1999	Dec 27, 1999
211	Hurd Enterprises, Ltd.	6	6	0	3	Mar 14, 2016	Apr 9, 2026
212	Natural Gas Gatherers	6	6	0	3	Aug 8, 1980	Jan 17, 1984
213	Overly Operating Co.	6	6	0	3	Jun 16, 1977	Dec 23, 1981
214	Rio Exploration Company	6	6	0	3	Mar 13, 2000	Nov 12, 2001
215	BP America Production Company	6	6	0	2	Apr 10, 2002	Aug 19, 2003
216	Castle Gas Corporation	6	6	0	0	Apr 6, 1981	Mar 13, 1992
217	Coalinga Corporation	6	6	0	0	Jun 5, 1987	Jan 29, 1988
218	Continental Oil Company	6	6	0	0	Jan 22, 1979	May 10, 1979
219	Cummins & Walker Oil Co., Inc.	6	6	0	0	Dec 30, 2003	Jul 9, 2007
220	Duke Energy Intrast. Network LLC	6	6	0	0	Sep 19, 2000	Oct 10, 2005
221	El Paso Production Company	6	6	0	0	Feb 8, 2000	May 9, 2000
222	Hanson Minerals Co.	6	6	0	0	Apr 15, 1982	Dec 17, 1984
223	Hinds Petroleum, LP	6	6	0	0	Oct 11, 2006	Jul 30, 2008
224	Honcho International Corp.	6	6	0	0	Jul 29, 1980	Mar 18, 1981
225	Major Exploration, Inc	6	6	0	0	Jan 27, 1982	Dec 13, 1983
226	Retamco, Inc	6	6	0	0	Nov 25, 1981	Mar 2, 1984
227	Samson Hydrocarbons Company	6	6	0	0	Oct 18, 1994	Feb 23, 1996
228	Stinger Oil & Gas Inc.	6	6	0	0	Jun 1, 1992	Apr 5, 1994
229	Sun Expl. & Prod. Co.-Houston	6	6	0	0	Dec 6, 1982	Dec 16, 1982
230	Waters Eng. & Operating, Inc.	6	6	0	0	Apr 8, 1992	Nov 25, 1996
231	West, Thomas S., Jr.	6	6	0	0	Aug 12, 1977	Dec 31, 1981
232	Whittier Operating Inc.	6	6	0	0	Nov 22, 2004	Aug 1, 2006
233	Warwick Poseidon, GP	5	5	5	28	Jul 13, 2026	Jul 20, 2026
234	Samson Lone Star LP	5	5	0	5	Mar 18, 1997	Dec 18, 1998
235	Earthstone Energy,inc.	5	5	0	3	Oct 10, 2012	Feb 24, 2014
236	Hagens, R. C.	5	5	0	2	Feb 13, 1981	Jul 20, 1983
237	Henderson, Peter Oil Co.	5	5	0	2	Nov 8, 1977	Dec 31, 1982
238	Phillips Petroleum Company	5	5	0	2	Jun 11, 1987	Jul 29, 1991
239	Riseden, Ltd.	5	5	0	1	Nov 30, 1984	Dec 14, 1984
240	Vaquillas Operating, Inc.	5	5	0	1	Aug 31, 1995	Dec 19, 1997
241	Blair Exploration, Inc.	5	5	0	0	Jul 20, 1978	Sep 26, 1979
242	Buffalo Petroleum Corp.	5	5	0	0	May 24, 1988	Nov 9, 1988
243	CD Resources Company	5	5	0	0	Dec 20, 1991	Mar 27, 2001
244	Cometra Oil and Gas, Inc.	5	5	0	0	Nov 1, 1990	Mar 19, 1991
245	Elf Aquitaine Mining Corp.	5	5	0	0	Jun 2, 1982	Jun 2, 1982
246	EP Operating Limited Partnership	5	5	0	0	Apr 2, 1993	May 5, 1994
247	Gonzalez, Elia G. Mineral Trust	5	5	0	0	Sep 23, 1985	Aug 30, 1988
248	HMS Operating Company, Inc.	5	5	0	0	Oct 22, 1979	Oct 7, 1980
249	Hunter & Hada	5	5	0	0	Mar 11, 1991	Jul 18, 1991
250	Hydrocarbon Horizons, Inc.	5	5	0	0	Dec 14, 1988	Sep 20, 1993
251	Jay-Dee Operating Company	5	5	0	0	Jan 20, 1978	May 13, 1983
252	Landress, Roger D.	5	5	3	0	Nov 27, 1989	May 18, 1990
253	Meridian Oil Production Inc.	5	5	0	0	Jun 11, 1993	Mar 20, 1996
254	Oiltex, Inc.	5	5	0	0	Jul 18, 1984	Jul 11, 1985
255	Petroleum Management, Inc.	5	5	0	0	Mar 6, 1989	May 21, 1990
256	Pinon Corporation	5	5	0	0	Aug 15, 1990	Dec 10, 1992
257	Stroube Oil & Gas, Inc.	5	5	0	0	Jun 4, 1980	Sep 15, 1980
258	Tenneco Uranium, Inc.	5	5	0	0	May 5, 1982	May 10, 1982
259	U. S. Resources-Catarina	5	5	0	0	May 2, 1978	Mar 21, 1979
260	White Oak Operating Company LLC	4	4	0	141	Dec 21, 2007	Sep 25, 2015
261	Petrorey Div. Killam Oil Co.	4	4	0	10	Apr 28, 1983	Jul 31, 1984
262	Tenneco Oil Co.	4	4	0	9	Jul 24, 1978	Aug 31, 1984
263	Petro-Hunt Corporation	4	4	0	8	May 17, 1996	Jun 18, 1998
264	Westport Oil and Gas Company, LP	4	4	0	8	Jan 23, 2004	Mar 1, 2005
265	Jackson Energy Development, Inc.	4	4	0	6	May 18, 1993	Sep 5, 1995
266	Herschap Bros.	4	4	0	5	Jan 4, 1991	Jul 15, 1991
267	Rowden, Ralph	4	4	0	5	Aug 9, 1977	Nov 14, 1977
268	Hughes Texas Petroleum, Ltd.	4	4	0	4	Mar 15, 1984	Mar 25, 1986
269	Teal Energy USA, Inc.	4	4	0	3	Aug 6, 1999	Dec 18, 2000
270	Guenther, Jack	4	4	0	2	Jul 12, 1977	Apr 19, 1982
271	Kaiser-Francis Oil Company	4	4	0	2	Sep 12, 1990	Oct 2, 2003
272	Tidal Petroleum, Inc.	4	4	0	2	Sep 19, 2005	Jan 4, 2006
273	Barrett Brothers Oil & Gas, Inc.	4	4	0	1	May 4, 2005	Dec 10, 2008
274	Tasca Exploration Company	4	4	0	1	Oct 17, 1983	Sep 14, 1984
275	Texaco Producing Inc.	4	4	0	1	Jun 17, 1987	Nov 5, 1990
276	Boulder Energy Partners, L.L.C.	4	4	0	0	Jun 9, 2005	Jun 9, 2005
277	Brammer Engineering, Inc.	4	4	0	0	Mar 30, 2004	Jan 21, 2005
278	Collier Diamond -C- Oils, Inc.	4	4	0	0	Aug 11, 1977	Nov 14, 1978
279	Damson Oil Corp.	4	4	0	0	Jul 20, 1981	Oct 19, 1981
280	Davis Oil Company	4	4	0	0	Sep 27, 1977	Nov 28, 1977
281	El Paso E & P Company, L. P.	4	4	4	0	Feb 1, 2010	Apr 27, 2010
282	Energy Transfer Company	4	4	0	0	Sep 16, 2016	Sep 16, 2016
283	Harvey Brothers Oil & Gas	4	4	0	0	Nov 22, 1982	Dec 1, 1995
284	Hydrocarbon Operating, Inc.	4	4	0	0	Jan 21, 1994	May 15, 2019
285	Lewis Energy Corp.	4	4	0	0	Nov 29, 1979	Apr 21, 1981
286	Mosbacher,robert-Transco Expl.	4	4	0	0	May 31, 1978	Dec 8, 1978
287	Null, W. M.-Oil Producer	4	4	0	0	Feb 12, 1991	Aug 19, 1991
288	Pg&e Gas Transmission, Tex. Corp	4	4	0	0	Jun 26, 1998	Jun 26, 1998
289	Railroad Commission District 01	4	4	0	0	Nov 8, 2000	Dec 1, 2000
290	San Antonio Gas & Oil, Inc.	4	4	0	0	Oct 18, 1989	Jan 21, 1994
291	U.S. Enercorp, Ltd.	4	4	0	0	Feb 13, 2007	Aug 4, 2007
292	Vermillion SWD, LLC	4	4	0	0	Oct 25, 2019	Nov 5, 2019
293	Vitruvian Exploration IV, LLC	4	4	4	0	Dec 22, 2017	Jan 2, 2018
294	Welhausen Operating Company, LP	4	4	0	0	Aug 17, 2004	Jun 7, 2006
295	L.T.D. Explorations Inc.	3	3	0	56	Apr 26, 1988	Jun 3, 1992
296	Smith, R. E.	3	3	0	23	Jul 8, 1981	Feb 14, 1983
297	Pacific Operators, Inc.	3	3	0	14	Oct 24, 1988	Sep 19, 1990
298	Forbes, Charles C.	3	3	0	9	May 23, 1989	Jan 7, 1994
299	Sun Expl. & Prod. Co.-Corpus	3	3	0	9	Jun 27, 1980	Jan 17, 1985
300	Prime Operating Company	3	3	0	8	Sep 17, 1996	Aug 4, 2000

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