COUNTIES · WHARTON · OPERATORS

Wharton 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	Apache Corporation	278	278	0	168	Oct 24, 1988	Dec 20, 2019
2	Texaco Inc.	263	263	0	103	Jun 22, 1977	Feb 6, 1991
3	TXO Production Corp.	184	184	0	64	Oct 15, 1981	Jun 8, 1990
4	Exxon Corp.	154	154	0	43	Jun 13, 1977	Mar 23, 1999
5	Cox & Perkins Exploration, Inc.	100	100	0	44	Nov 24, 1986	Aug 8, 2011
6	Mustang Exploration Co., Inc.	99	99	0	113	Jun 10, 1977	Sep 6, 2000
7	Texas Oil & Gas Corp.	84	84	0	112	Jun 13, 1977	Aug 20, 1981
8	Hollimon Oil Corporation	82	82	0	25	Jul 18, 1990	Oct 28, 2013
9	Adobe Energy, Inc.	81	81	0	7	Jun 22, 1994	Aug 20, 1998
10	Milagro Exploration, LLC	80	80	0	1	Sep 25, 2006	Jul 22, 2014
11	Ricochet Energy, Inc.	75	75	0	28	Mar 30, 2001	Mar 31, 2026
12	Transtexas Gas Corporation	70	70	0	13	Oct 6, 1995	Aug 3, 2005
13	Boling Production Co., Inc.	59	59	0	78	Dec 19, 1977	Nov 20, 2002
14	Venus Oil Company	53	53	0	14	Nov 20, 1978	Feb 15, 2001
15	H-M Oil Company	50	50	0	12	Jun 22, 1977	Sep 10, 1986
16	Ladd Petroleum Corp.	49	49	0	8	Apr 26, 1983	Sep 19, 1990
17	Coastal Oil & Gas Corporation	49	49	0	4	May 3, 1984	May 30, 2001
18	Realitos Energy Corp.	44	44	0	26	Jul 26, 1977	Jan 31, 1991
19	Hagen-Greenbriar Expl. Corp.	44	44	0	1	Dec 6, 1983	May 29, 1990
20	Brayton Operating Corp.	42	42	0	2	May 3, 1993	Jun 19, 2009
21	White Oak Operating Company LLC	39	39	3	5	Nov 19, 2015	Aug 18, 2021
22	JRP Production, LLC	37	37	0	21	Nov 25, 2009	Jul 6, 2017
23	North Central Oil Corp.	37	37	0	9	Jul 17, 1984	Dec 17, 1996
24	Owl Petroleum Company	37	37	0	6	May 25, 1979	Aug 26, 1986
25	Logue and Patterson Inc.	36	36	0	12	Aug 31, 1977	Mar 30, 1988
26	Dynamic Production, Inc.	35	35	0	23	Mar 23, 1995	May 5, 2014
27	Forest Oil Corporation	35	35	0	13	Aug 15, 2003	Oct 14, 2011
28	Terra Resources, Inc.	35	35	0	12	Aug 5, 1977	Mar 3, 1989
29	Decker Operating Co., L.L.C.	34	34	0	21	Dec 17, 2001	Oct 28, 2010
30	Geodominion Petroleum	34	34	0	17	Oct 23, 1986	Jul 13, 2004
31	Carr, F. William	34	34	0	11	May 18, 1978	Sep 19, 1989
32	Conoco Inc.	33	33	0	7	Oct 23, 1989	Mar 8, 1994
33	United Oil & Minerals, Inc.	32	32	0	4	Jan 11, 1993	Sep 8, 2000
34	Billfisch Exploration Co., Inc.	31	31	0	23	Jan 25, 1988	May 26, 1995
35	Forney Oil Corporation	31	31	0	0	Feb 5, 1985	Jul 30, 1987
36	Bass Enterprises Production Co.	29	29	0	3	Jan 17, 1980	Jan 22, 1997
37	Mustang Fuel Corporation	28	28	0	17	Nov 19, 1998	Sep 27, 2002
38	Ken Petroleum Corporation	27	27	0	21	Aug 3, 1977	Feb 23, 2018
39	Talon Development Co., Inc.	27	27	0	9	Jun 3, 1993	Oct 8, 1999
40	Amexco, LLC	26	26	0	16	Aug 7, 2009	Mar 20, 2026
41	Nelson & Waddell	26	26	0	0	Sep 6, 1977	Jan 24, 1980
42	Viper S.W.D., LLC	25	25	1	53	Mar 14, 2007	Oct 27, 2021
43	Dewbre Petroleum Corporation	25	25	0	33	Jun 15, 2000	Jan 20, 2017
44	Kebo Oil & Gas, Inc.	25	25	0	16	Aug 18, 1997	Oct 4, 2008
45	Tuskar (Texas), Inc.	25	25	0	6	Jun 8, 1990	May 28, 2010
46	Newfield Exploration Company	25	25	0	5	Jun 14, 2002	Oct 22, 2015
47	Cico Oil & Gas Company	24	24	0	13	Oct 10, 1978	Jan 18, 2017
48	Samson Lone Star LP	24	24	0	13	Aug 26, 1998	Oct 13, 2006
49	Hughes, Dan A. Company	23	23	0	11	Oct 10, 1988	Jan 28, 2004
50	Kaiser-Francis Oil Company	23	23	0	11	Aug 28, 1998	Oct 15, 2013
51	Cameron, Paul E., Jr., Inc.	23	23	0	4	Oct 11, 1977	Jun 2, 1981
52	Engelke, R. H.	22	22	0	14	Jun 13, 1977	Aug 16, 1983
53	Inland Ocean, Inc.	22	22	0	8	Feb 21, 2006	Nov 22, 2021
54	Pure Resources, L.P.	22	22	0	6	Jun 8, 2000	Oct 11, 2002
55	Sun Expl. & Prod. Co.-Corpus	22	22	0	6	Dec 11, 1979	Apr 28, 1988
56	Rockwood Resources, Inc.	22	22	0	5	Jun 12, 1979	Apr 14, 1983
57	Hilcorp Energy Company	21	21	0	113	Mar 10, 1994	Apr 15, 2020
58	Harrison, Sam G.	21	21	0	9	Jul 28, 1977	Jan 3, 1989
59	C & E Operating, Inc.	21	21	0	7	Dec 22, 1993	Feb 24, 2006
60	Maverick Prod. Co., Inc.	21	21	0	5	Dec 20, 2011	Apr 30, 2014
61	Amerada Hess Corporation	21	21	0	2	Dec 31, 1992	Jul 21, 1998
62	Texasgulf Inc.	20	20	0	68	Oct 28, 1977	Oct 4, 1984
63	Southeastern Pipe Line Company	20	20	0	12	Sep 16, 1981	Jun 3, 2003
64	Greenhill Petroleum Corporation	20	20	0	9	May 15, 1989	May 25, 1993
65	Nelson & Tucker Operating Co.	20	20	0	8	Oct 26, 1979	Aug 7, 1985
66	KCS Resources, Inc.	20	20	0	6	Jan 31, 2006	Sep 28, 2007
67	Goldking Prod. Co.	20	20	0	5	May 16, 1978	May 1, 1984
68	Forcenergy Onshore Inc.	20	20	0	4	Mar 27, 1998	Oct 19, 2011
69	Sanchez Oil & Gas Corporation	20	20	0	2	Jan 31, 2008	Jul 3, 2012
70	Cypress E & P Corporation	20	20	0	1	Dec 17, 2004	Jan 31, 2011
71	Tartan Production Co.	19	19	0	25	Jun 29, 1977	Apr 16, 1980
72	Hgi Corporation	19	19	0	15	Sep 7, 1982	Jun 3, 1992
73	Tartan Oil & Gas	19	19	0	9	May 14, 1979	Jul 30, 1982
74	Patterson Petroleum LP	19	19	0	1	Aug 15, 2002	Jul 13, 2006
75	Richards Producing Company	19	19	0	1	Nov 23, 1981	Aug 20, 1984
76	Sue-Ann Operating, L.C.	18	18	0	9	Aug 31, 2004	Nov 19, 2008
77	EP Operating Company	18	18	0	2	Jul 7, 1987	Dec 4, 1991
78	Sue-Ann Operating Co.	18	18	0	2	Sep 20, 1978	Jul 23, 1981
79	Kamlok, Inc.	18	18	0	0	Apr 26, 1982	Nov 30, 1989
80	Magnum Producing, LP	17	17	0	29	Nov 15, 2006	Aug 15, 2025
81	Ballard Exploration Company,inc.	17	17	0	8	Aug 9, 1983	Jan 3, 2023
82	Everest Resource Company	17	17	0	3	Jul 17, 2006	Nov 10, 2010
83	Chapman Oil	17	17	0	1	Oct 26, 1977	Oct 12, 1984
84	Tri-C Resources, Inc.	17	17	0	1	Jan 30, 1986	Oct 13, 2005
85	Remora Management, LLC	16	16	0	340	Apr 23, 2021	May 28, 2026
86	Tomlinson, Thomas K. Inc.	16	16	0	9	May 15, 1978	May 3, 2000
87	New Century Exploration, Inc.	16	16	0	7	Nov 30, 2004	Dec 15, 2016
88	Chase Energy, Inc.	16	16	0	5	Jan 29, 1985	Jul 8, 1991
89	Prime Oil Company	16	16	0	2	Aug 17, 1978	Dec 8, 1983
90	Howell Petroleum Corporation	15	15	0	24	Oct 18, 1988	Apr 27, 1993
91	Harrison, Sam G. Oil Inc.	15	15	0	21	Mar 8, 1990	Nov 20, 2003
92	Kaler Energy Corp.	15	15	0	3	Sep 19, 2005	Feb 15, 2023
93	Westhall Associates, Inc.	15	15	0	0	Apr 17, 1990	Mar 16, 1992
94	Paloma Operating, LLC	14	14	0	15	Jul 13, 2022	Aug 26, 2026
95	H-M Resource Management, Inc.	14	14	0	6	Nov 1, 1996	Jul 13, 2010
96	Caza Operating, LLC	14	14	0	5	Sep 28, 2006	Oct 10, 2014
97	Graham Production Co.	14	14	0	5	May 11, 1981	Aug 31, 1984
98	Carter Exploration Company	14	14	0	3	Feb 20, 1981	Jun 28, 1985
99	United Oil & Minerals L. P.	14	14	0	2	Oct 13, 2000	Oct 29, 2002
100	Forney, Bill, Inc.	14	14	0	1	Sep 19, 1980	Feb 26, 1985
101	Greenbriar Corp., The	14	14	0	1	Jun 3, 1980	Sep 8, 1983
102	Yuma Petroleum Company	14	14	0	1	Sep 29, 1988	Sep 8, 1995
103	La. Campbell Energy Corp.	14	14	0	0	Aug 20, 1979	Dec 31, 1984
104	B & M Operating Co., Inc.	13	13	0	7	Dec 31, 1979	Feb 10, 1984
105	Hydrocarbon Gathering, Inc.	13	13	0	5	Aug 17, 1977	Feb 22, 1982
106	Walter Oil & Gas Corporation	13	13	0	5	Feb 7, 1984	Nov 9, 2001
107	Atapco	13	13	0	4	Jan 2, 1990	Oct 5, 1993
108	Rockwood Oil & Gas Corp.	13	13	0	0	Sep 6, 1977	Dec 2, 1981
109	MB Energy, LLC	12	12	0	14	Jun 16, 2022	Nov 6, 2026
110	Gulfstar Properties, Inc.	12	12	0	6	Jul 14, 2000	Aug 22, 2012
111	Zinn Petroleum Co.	12	12	0	5	Oct 11, 1996	Oct 4, 2001
112	Vanderbilt Resources Corp.	12	12	0	3	Sep 8, 1977	Aug 17, 1983
113	McGowan Working Partners	12	12	0	2	Aug 15, 1995	Mar 18, 1999
114	Davis, A. L. Production Company	12	12	0	0	Sep 13, 1989	Jul 13, 1990
115	Macon Drilling Company	12	12	0	0	Aug 16, 1982	Feb 22, 1990
116	Bse Production Co.	11	11	0	15	Aug 24, 2000	Apr 16, 2008
117	Prairie Producing Company	11	11	0	14	Jan 11, 1978	Oct 20, 1980
118	Cockburn Oil Corporation	11	11	0	11	Mar 31, 1978	Dec 14, 1989
119	Allegro Investments, Inc.	11	11	0	1	Jan 24, 1995	Oct 27, 2006
120	Hardwick Oil Company	11	11	0	1	Dec 2, 1991	May 30, 1997
121	Ascent Energy, Inc	11	11	0	0	Jul 10, 2002	May 20, 2004
122	Hall-Houston Oil Company	11	11	0	0	Jun 26, 1997	Nov 9, 1999
123	Macon, Eugene	11	11	0	0	Jul 9, 1980	Sep 28, 1984
124	Maxus Exploration Company	11	11	0	0	Aug 11, 1987	Nov 15, 1990
125	Thurman, D.E. & Robert Layne	11	11	0	0	Aug 11, 1981	Aug 11, 1981
126	Jamex, Inc.	10	10	0	6	Nov 3, 1998	Mar 5, 2010
127	Spicewood Operating Company, LLC	10	10	0	6	Jan 8, 2015	Dec 28, 2016
128	K-B Exploration Co.	10	10	0	5	Sep 17, 1979	Aug 21, 1985
129	Goldston Oil Corp.	10	10	0	4	May 18, 1978	Dec 6, 1988
130	Forrest Energy, LLC	10	10	0	3	May 15, 1995	Apr 2, 1997
131	KA-Hugh International, Inc.	10	10	0	3	Oct 24, 1977	Sep 22, 1987
132	Chesapeake Operating, Inc.	10	10	0	2	Oct 7, 1998	May 17, 2002
133	Buttes Resources Company	10	10	0	1	Sep 30, 1977	Jun 21, 1988
134	Hughes Texas Petroleum, Ltd.	10	10	0	1	Jan 31, 1986	Mar 30, 1987
135	Lago Petroleum Co.	10	10	0	1	May 8, 1978	May 8, 1989
136	Houston Domestic Oil Company	10	10	0	0	Aug 22, 1977	May 18, 1982
137	Fredco	9	9	0	10	Sep 26, 1988	May 13, 1999
138	Bay Rock Operating Company	9	9	0	6	Jun 4, 1999	Jan 4, 2002
139	Damson Oil Corp.	9	9	0	5	Oct 13, 1977	Dec 31, 1984
140	Sue-Ann Oil & Gas Company	9	9	0	5	Aug 16, 1982	Jun 1, 1987
141	Texploration	9	9	0	5	Jun 17, 2009	May 5, 2010
142	Del Petroleum Corporation	9	9	0	4	Mar 29, 1982	Mar 1, 1989
143	Royal Oil & Gas Corp.	9	9	0	3	Nov 19, 1979	Jul 15, 1992
144	Triple L Oil Company	9	9	0	3	Dec 15, 1983	Dec 6, 1994
145	Haas, Charles F.	9	9	0	2	Jun 7, 1979	Feb 9, 1982
146	CPC Exploration Inc.	9	9	0	1	Dec 4, 1980	Feb 14, 1986
147	J-W Operating Co.	9	9	0	1	Jan 6, 2003	Apr 1, 2005
148	National Onshore LP	9	9	0	0	Sep 19, 2005	Oct 6, 2006
149	Norris Petroleum Consultants Inc	9	9	0	0	Oct 3, 1978	Nov 12, 1979
150	Republic Mineral Corporation	9	9	0	0	Jun 25, 1984	Dec 31, 1986
151	McGowan Working Partners, Inc.	8	8	0	161	Mar 26, 2001	Sep 25, 2014
152	Hyquest Energy, Inc.	8	8	0	9	Aug 12, 1981	Oct 12, 1994
153	Mueller Exploration, Inc.	8	8	0	6	Mar 23, 2004	Sep 16, 2016
154	Haas, C. F. Oil & Gas Inc.	8	8	0	5	Apr 18, 1990	Apr 21, 2003
155	Mark Producing, Inc.	8	8	0	4	Sep 17, 1982	Jun 10, 1985
156	Patterson Petroleum, Inc.	8	8	0	3	Aug 30, 1995	Mar 13, 1997
157	Arco Oil & Gas Co.	8	8	0	2	Feb 26, 1980	Jun 11, 1990
158	Laurel Fuel Company	8	8	0	2	Mar 25, 1980	Mar 28, 1991
159	Texark Energy Corporation	8	8	0	2	Nov 19, 1984	Dec 17, 1985
160	Trafalgar House Oil and Gas Inc.	8	8	0	1	Mar 23, 1987	Jun 12, 1989
161	Voight, John G.	8	8	0	1	Jun 24, 1980	Jan 20, 1982
162	Anchor Production Co., Inc.	8	8	0	0	Jul 12, 1977	May 12, 1978
163	Enre, L.P.	8	8	0	0	Mar 14, 2001	Jan 16, 2002
164	Gemarmi Inc.	8	8	0	0	Dec 12, 2001	Nov 6, 2014
165	Tartan Resources Corporation	7	7	0	8	Dec 31, 1982	Apr 29, 1987
166	XTO Energy Inc.	7	7	0	8	Sep 17, 2007	Jul 27, 2015
167	Acock/Anaqua Operating Co., LP	7	7	0	7	Apr 6, 2005	Feb 13, 2019
168	Gasper Rice Resources, Ltd.	7	7	0	5	Apr 7, 2003	Aug 28, 2007
169	Swift Energy Company	7	7	0	4	Nov 30, 1993	Jun 30, 1994
170	Armour Resource Holdings, Ltd.	7	7	0	3	Mar 8, 1988	Sep 23, 1993
171	Weiser-Brown Operating Company	7	7	0	3	Jan 3, 2003	Jan 21, 2004
172	Hanson Minerals Co.	7	7	0	2	Jul 11, 1985	Jan 24, 1992
173	Pecos Petroleum Company	7	7	0	2	Sep 14, 1988	Aug 4, 1995
174	Triple L Oil Company, Inc.	7	7	0	2	Feb 9, 1978	Apr 22, 1982
175	Unoso Operating Company L.L.C.	7	7	0	2	Mar 17, 1997	Jul 12, 2007
176	Aurora Resources Corporation	7	7	0	1	Jul 14, 2007	Jan 26, 2010
177	B & G Energy Corporation	7	7	0	1	Jan 27, 1995	Mar 3, 2003
178	Realitos I Exploratory Program	7	7	0	1	Mar 20, 1978	Apr 11, 1980
179	Billington, Elmer	7	7	0	0	Dec 21, 1988	Jun 1, 1995
180	Ellsworth, H. P. O&G Properties	7	7	0	0	Jan 31, 1991	Oct 17, 2012
181	Falcon Bay Operations, LLC	7	7	0	0	Jul 15, 2005	Dec 5, 2006
182	McLeod, George L. Inc.	7	7	0	0	Dec 31, 1984	Feb 1, 1993
183	Nelson, Jon J.	7	7	0	0	Jul 18, 1977	Sep 23, 1977
184	Petech Enterprises, Inc.	7	7	0	0	Feb 14, 1989	Sep 8, 1997
185	Tolly, M. & Billington, Elmer	7	7	0	0	Jun 30, 1978	Sep 10, 1980
186	Virlar Exploration, Inc.	7	7	0	0	Jul 9, 1980	May 26, 1983
187	Williams Expl Co a Delaware Corp	7	7	0	0	Oct 15, 1981	Jan 24, 1986
188	Davis, C. O. Production Co.	6	6	0	11	Sep 28, 1987	Sep 15, 2004
189	Alta Mesa Services, LP	6	6	0	9	Jun 7, 2008	Aug 1, 2013
190	Atasca Resources, Inc.	6	6	0	8	Feb 19, 1993	Sep 16, 2004
191	Voight Oil Company	6	6	0	5	Apr 13, 1982	Nov 23, 1992
192	D. K. G., Inc.	6	6	0	4	Jan 5, 1978	Jun 8, 1983
193	Garrison Ltd.	6	6	0	4	Feb 25, 2000	Dec 13, 2013
194	Hunt Oil Company	6	6	0	4	Dec 28, 2004	Aug 1, 2006
195	Mole Operating Co., Inc.	6	6	0	4	Dec 28, 1979	Oct 2, 1981
196	Union Oil Company of California	6	6	0	4	Feb 14, 1978	Jul 16, 1997
197	Mueller Engineering Corp.	6	6	0	3	Dec 20, 1984	Jun 17, 1988
198	Texokan Energy Corporation	6	6	0	3	Dec 30, 1983	Aug 17, 1992
199	Albrecht, Phil A., Jr.	6	6	0	2	Aug 24, 1989	Dec 29, 1992
200	American Int'l Energy Corp.	6	6	0	2	Nov 24, 1982	Jul 29, 1996
201	Braun, C F & Co.	6	6	0	2	Oct 25, 1977	Sep 3, 1981
202	Cannon Production, Inc.	6	6	0	2	Jan 4, 1979	Oct 9, 1980
203	Hamman Oil & Refining Company	6	6	0	2	Apr 18, 1983	Mar 8, 2011
204	Petroleum Unlimited, Inc.	6	6	0	2	Dec 19, 1977	Nov 7, 1983
205	Venus Exploration, Inc.	6	6	0	2	Oct 17, 1996	Sep 12, 2001
206	American Energy Partners, Inc.	6	6	0	1	Oct 5, 2001	Mar 24, 2006
207	British American Petroleum Corp.	6	6	0	1	Dec 8, 1980	Mar 7, 1983
208	Danielson, Paul F.	6	6	0	1	Dec 12, 1977	Apr 3, 1979
209	Forza Operating, LLC	6	6	0	1	Dec 18, 2017	Jul 25, 2024
210	L & B Oil Co. Inc.	6	6	0	1	Jan 9, 1985	Apr 15, 1986
211	Moose Oil & Gas Co.	6	6	0	1	Mar 20, 1990	Dec 20, 1993
212	Thomas, E. R.	6	6	0	1	Dec 12, 1979	Dec 22, 1982
213	Bellwether Exploration Company	6	6	0	0	Sep 16, 1999	Apr 27, 2000
214	Davis, A. L. Oil Co.	6	6	0	0	Jan 2, 1979	Apr 23, 1981
215	Ethyl Properties, Inc.	6	6	0	0	Feb 14, 1985	Jan 6, 1988
216	Hughes Texas Petroleum	6	6	0	0	Jun 11, 1987	Feb 3, 1988
217	Layne, Robert Oil Co.	6	6	0	0	Sep 19, 1984	Nov 25, 1985
218	Lovaca Gathering Company	6	6	0	0	Aug 16, 1979	Aug 17, 1979
219	McCarter, A. Nelson	6	6	0	0	Aug 22, 1986	Sep 11, 1995
220	Patrick Pet. Corp. of Michigan	6	6	0	0	Aug 3, 1979	Sep 30, 1983
221	Tenex Corporation	6	6	0	0	Apr 13, 1993	Apr 28, 1995
222	Union Expl. Partners, Ltd.	6	6	0	0	Jan 23, 1986	Apr 26, 1990
223	Southeastern Public Service Co.	5	5	0	50	Jul 18, 1977	Jun 6, 1979
224	Texaco E & P Inc.	5	5	0	31	Jul 11, 1991	Mar 17, 1994
225	CML Exploration, LLC	5	5	0	12	Mar 21, 2008	Mar 26, 2021
226	Davis, J. R. Oil Company	5	5	0	10	Jun 17, 1988	May 5, 2008
227	Wagner Oil Company	5	5	0	9	May 4, 2001	May 14, 2008
228	Gruy Mgmt. Service Co.	5	5	0	7	Sep 22, 1977	Jul 2, 1982
229	Houston Oil & Gas Company , Inc.	5	5	0	7	Jul 23, 1985	Nov 10, 1986
230	K & a, Inc.	5	5	0	7	Nov 14, 1977	Dec 12, 1980
231	Bridge Oil Production Co., Inc.	5	5	0	5	Mar 21, 1991	Mar 3, 1993
232	Getty Oil Co.	5	5	0	5	Jul 11, 1979	Jun 15, 1983
233	GWR Operating Co.	5	5	0	5	Sep 26, 1986	May 2, 1988
234	Gasaway, J. T.	5	5	0	4	Jul 5, 1984	Sep 14, 1992
235	Rincon Petroleum Corporation	5	5	0	4	Aug 4, 2004	Sep 23, 2009
236	Amax Oil & Gas Inc.	5	5	0	3	Jul 3, 1992	Aug 25, 1993
237	Ascent Operating, LP	5	5	0	3	Apr 8, 2005	Jun 2, 2008
238	Great Western Onshore Inc.	5	5	0	3	Aug 11, 1993	May 21, 1996
239	Hennig Production Co., Inc.	5	5	0	3	Apr 11, 2001	Mar 11, 2013
240	Medallion Oil Co.	5	5	0	3	Sep 8, 1989	Feb 25, 1991
241	Carrizo Oil & Gas, Inc.	5	5	0	2	Dec 28, 1998	Jan 29, 2003
242	Dallas Production, Inc.	5	5	0	2	Mar 15, 1993	Apr 29, 1996
243	Lavaca River Operating Co., LLC	5	5	0	2	Mar 4, 2011	Apr 21, 2016
244	Penwell Energy, Inc.	5	5	0	2	Jul 1, 1991	Aug 30, 1995
245	Scoggins Oil & Gas Co.	5	5	0	2	Oct 6, 1978	Feb 8, 1991
246	Tee Operating Co.	5	5	0	2	Jun 6, 1979	Jul 27, 1983
247	Texstar North America, Inc.	5	5	0	2	Jul 30, 1985	Dec 17, 1987
248	Zachry Exploration, Ltd.	5	5	0	2	Jun 7, 2004	Mar 7, 2006
249	Cobra Oil & Gas Corporation	5	5	0	1	Oct 21, 1977	May 20, 1982
250	Dome Stripper Enterprises, Inc.	5	5	0	1	Dec 31, 1982	Jul 18, 1983
251	Klotzman, M. S. Exploration	5	5	0	1	Aug 6, 1981	Apr 17, 1984
252	Production Acquisition Company	5	5	0	1	Dec 6, 1984	Aug 28, 1986
253	Acock/Anaqua Operating Co., LC	5	5	0	0	May 17, 2002	Jan 16, 2004
254	Cambridge Royalty Company	5	5	0	0	Sep 28, 1981	Sep 29, 1981
255	Derrick, Jim	5	5	0	0	Sep 10, 1980	Mar 30, 1982
256	Enre Corp.	5	5	0	0	Dec 15, 1999	Sep 11, 2000
257	Finch, B. L. Production Co.	5	5	0	0	Mar 25, 1986	Aug 10, 1990
258	Gillring Oil Company	5	5	0	0	May 21, 1992	Apr 1, 1993
259	H & S Production, Inc.	5	5	0	0	Aug 30, 2001	Jun 7, 2002
260	Lauritzen Energy, Inc.	5	5	0	0	Jun 10, 1986	Jan 17, 1991
261	Phoenix Minerals, Inc.	5	5	0	0	Mar 25, 1981	May 18, 1981
262	Texas Meridian Operating Co.,inc	5	5	0	0	Jul 26, 1989	Nov 20, 1990
263	Texian Oil Co., Inc.	5	5	0	0	Dec 22, 1981	Jun 18, 1982
264	Viceroy Petroleum, LP	5	5	0	0	Feb 26, 2019	Aug 21, 2019
265	CHP Oil & Gas Company, L.C.	4	4	0	14	Jun 16, 1994	May 22, 2024
266	Smith, Adolph	4	4	0	13	Jun 15, 1977	Feb 10, 1986
267	Dow Chemical Co., The	4	4	0	6	Oct 13, 1978	Apr 2, 1981
268	Acoma Oil Corporation	4	4	0	5	Mar 6, 1981	May 11, 1994
269	McRae Exploration & Prod., Inc.	4	4	0	4	Dec 6, 1988	Oct 18, 1993
270	Amoco Production Company	4	4	0	3	Jan 3, 1978	Nov 20, 1989
271	Clover Energy Corporation	4	4	0	3	Oct 7, 1977	Sep 11, 1981
272	Corum Production Company	4	4	0	3	Jan 8, 2008	May 12, 2009
273	Pacific Enterprises Oil Co.(usa)	4	4	0	3	Aug 14, 1989	Nov 5, 1990
274	Williams, Clayton Energy, Inc.	4	4	0	3	Feb 19, 1997	Jan 5, 2001
275	Chief Petroleum Company	4	4	0	2	Jul 28, 1994	May 13, 1996
276	Corpening Enterprises	4	4	0	2	Sep 12, 1977	Dec 2, 1982
277	Eex Corporation	4	4	0	2	Jul 21, 1998	Dec 21, 1998
278	Fame Oil Company	4	4	0	2	Feb 1, 1984	Aug 6, 1984
279	Headington Oil Company, L.P.	4	4	0	2	Oct 18, 2000	May 2, 2005
280	MCZ, Inc.	4	4	0	2	Jun 29, 1984	Feb 21, 1985
281	Rodessa Operating Company	4	4	0	2	Jul 1, 1998	Oct 17, 2000
282	Bettis, Boyle & Stovall	4	4	0	1	Feb 4, 1983	Nov 27, 1995
283	Black Jack Resources, Inc.	4	4	0	1	Sep 11, 1980	Mar 30, 1982
284	Bulldog Exploration, LP	4	4	0	1	Sep 23, 2004	Oct 3, 2005
285	Choice Exploration, Inc.	4	4	0	1	Aug 5, 2008	Oct 15, 2009
286	Csa Exploration Company	4	4	0	1	Nov 28, 1983	Jun 20, 1985
287	Dickson & Karabatsos O & G, Inc	4	4	0	1	Mar 18, 1988	Dec 13, 1989
288	Hill Production Co.-Wisconsin	4	4	0	1	Mar 31, 1989	Apr 15, 1991
289	Jilpetco, Inc.	4	4	0	1	Aug 14, 2008	May 16, 2014
290	JMM Energy LLC	4	4	0	1	Dec 8, 2011	May 9, 2013
291	M-C Oil Company	4	4	0	1	Mar 27, 1978	Apr 18, 1980
292	Oblaen Resources LLC	4	4	0	1	Jun 9, 2017	Mar 25, 2021
293	Pershing Corporation	4	4	0	1	Oct 17, 1983	Sep 4, 1984
294	Wainoco Oil & Gas Company	4	4	0	1	Aug 3, 1979	May 30, 1991
295	Wellco Oil Company	4	4	0	1	Sep 16, 1977	Feb 19, 1981
296	Acock Engineering & Assoc., Inc.	4	4	0	0	Sep 7, 1995	Oct 26, 2001
297	Anschutz Corporation, The	4	4	0	0	Mar 26, 1982	Nov 13, 1987
298	Anster Minerals, Inc.	4	4	0	0	Jul 22, 1985	Jun 19, 1986
299	Billfish Exploration Company,inc	4	4	0	0	Apr 3, 1987	Aug 31, 1987
300	Corley, J F &woods, S C Trustees	4	4	0	0	Sep 16, 1977	Feb 9, 1981

1,193 OPERATORS · THE 300 MOST ACTIVE SHOWN · WINDOW ON THE RRC ISSUE DATE