COUNTIES · MIDLAND · OPERATORS

Midland 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	Pioneer Natural Res. USA, Inc.	4,147	4,147	2,704	5,360	Sep 17, 1996	Oct 22, 2026
2	Endeavor Energy Resources L.P.	2,260	2,260	1,379	265	Jul 21, 1997	Feb 6, 2025
3	Chevron U. S. A. Inc.	1,337	1,337	874	973	Aug 11, 1986	Oct 27, 2026
4	XTO Energy Inc.	1,336	1,336	1,304	1,061	Aug 18, 1997	Feb 11, 2026
5	Diamondback E&P LLC	1,127	1,127	994	2,696	Aug 6, 2009	Oct 29, 2026
6	COG Operating LLC	617	617	445	891	Aug 10, 2005	Oct 20, 2026
7	Parker & Parsley Development Co.	593	593	0	112	Jan 2, 1991	Feb 28, 1995
8	Fasken Oil and Ranch, Ltd.	555	555	90	383	Aug 28, 1997	Jan 7, 2026
9	Crownquest Operating, LLC	553	553	300	8	Feb 27, 2009	Jul 23, 2024
10	Permian Deep Rock Oil Co., LLC	501	501	486	132	Jun 13, 2016	Jun 24, 2026
11	Henry Resources LLC	456	456	110	26	May 5, 2008	Sep 11, 2023
12	Apache Corporation	453	453	446	846	Jun 3, 2014	Jul 10, 2026
13	Mobil Producing TX. & N.M. Inc.	395	395	54	14	Jun 30, 1977	Jul 12, 2005
14	RSP Permian, LLC	390	390	236	18	Feb 9, 2011	Aug 1, 2018
15	Parker & Parsley Development L.P	351	351	20	22	Jul 14, 1992	Sep 26, 1997
16	Parker & Parsley Petroleum Co.	334	334	1	31	Sep 17, 1985	Feb 17, 1989
17	Discovery Operating, Inc.	329	329	163	232	Dec 28, 1981	Jul 20, 2026
18	Parsley Energy Operations, LLC	328	328	196	35	Sep 8, 2010	Dec 10, 2020
19	Encana Oil & Gas(usa) Inc.	311	311	290	9	Oct 8, 2013	Feb 5, 2020
20	OXY USA WTP LP	283	283	47	68	Apr 24, 2001	Sep 2, 2016
21	DE3 Operating LLC	281	281	264	4	Feb 15, 2018	May 7, 2021
22	Callon Petroleum Operating Co	261	261	170	13	Oct 25, 2008	Feb 21, 2024
23	Ovintiv USA Inc.	257	257	257	639	Jun 22, 2015	Oct 22, 2026
24	Texaco E & P Inc.	256	256	94	46	Apr 1, 1991	Jan 23, 2002
25	Arco Permian	246	246	35	10	Dec 6, 1994	Sep 21, 2001
26	Parker & Parsley, Inc.	201	201	0	2	Mar 13, 1978	Nov 21, 1985
27	CMS Oil and Gas Company	185	185	31	1	Jun 22, 1999	Oct 9, 2002
28	Perenco LLC	177	177	0	1	Apr 26, 2001	May 2, 2005
29	Berry Oil Comp.	174	174	0	0	Jul 14, 1989	Apr 30, 2014
30	Summit Petroleum LLC	165	165	54	90	Jul 3, 2007	May 16, 2022
31	Stephens, Autry C.	146	146	2	19	Jun 6, 1983	Sep 1, 2000
32	Energen Resources Corporation	143	143	37	8	Jan 21, 1999	Mar 15, 2018
33	Terrace Petroleum Corporation	131	131	14	4	Mar 1, 1995	May 13, 2008
34	Parker & Parsley, Ltd.	125	125	0	0	Sep 6, 1989	Apr 1, 1991
35	Exxon Corp.	123	123	0	23	Aug 14, 1984	Sep 29, 1999
36	Henry Petroleum LP	114	114	3	8	Oct 12, 2000	Oct 9, 2008
37	Occidental Permian Ltd.	110	110	69	70	Mar 30, 2011	Mar 17, 2022
38	Cox, John L.	103	103	0	26	Jun 17, 1977	May 25, 2000
39	Linn Operating, Inc.	100	100	5	0	Oct 30, 2008	Sep 12, 2014
40	OXY USA Inc.	98	98	2	54	Jun 10, 1988	Oct 26, 2000
41	Windsor Permian LLC	89	89	0	0	Aug 7, 2008	Jun 29, 2012
42	Henry Petroleum Corp.	87	87	0	20	May 20, 1983	Mar 23, 2001
43	Athlon Energy Operating LLC	84	84	3	0	Apr 28, 2011	Jan 30, 2014
44	Texaco Inc.	83	83	0	41	Jun 24, 1977	Jan 10, 1991
45	Oxyrock Operating, LLC	82	82	81	362	Jun 27, 2023	Jun 4, 2026
46	E.G.L. Resources, Inc.	82	82	1	0	Mar 10, 2008	Apr 16, 2014
47	Legacy Reserves Operating LP	81	81	0	23	Mar 15, 2006	Jul 2, 2015
48	LCX Energy, LLC	77	77	2	0	May 16, 2005	Mar 17, 2009
49	Firebird Energy II LLC	75	75	75	28	Aug 16, 2021	May 4, 2026
50	Windsor Energy Group, L.L.C.	69	69	0	0	Jun 23, 2008	Mar 9, 2010
51	Midland Energy, Inc.	68	68	0	8	Dec 9, 2002	Aug 7, 2014
52	Mid-States Operating Company	63	63	0	13	Feb 21, 2003	Aug 17, 2026
53	Athlon Holdings LP	60	60	8	0	Feb 20, 1997	Dec 16, 2014
54	Continental Resources, Inc.	57	57	57	254	Jan 9, 2024	Oct 5, 2026
55	Bluestem Energy Holdings, LLC	54	54	0	28	Mar 3, 2011	May 30, 2014
56	Petroplex Energy Inc.	54	54	26	19	Nov 30, 2004	May 11, 2026
57	Independence Resources Mgmt, LLC	53	53	53	0	Jun 3, 2016	Jun 17, 2019
58	MLC Co., Inc.	50	50	0	7	May 6, 1988	Feb 5, 1990
59	Lario Oil & Gas Company	50	50	49	0	Aug 17, 2015	Dec 12, 2022
60	Plains Petroleum Operating Co.	49	49	0	4	Oct 2, 1990	Feb 24, 1993
61	Arco Oil & Gas Co.	45	45	3	7	Aug 22, 1980	Dec 22, 1993
62	Patriot Resources, Inc.	45	45	0	0	Dec 27, 2005	Oct 21, 2010
63	High Sky Partners LLC	41	41	16	0	Aug 27, 2013	Sep 10, 2015
64	Gulf Oil Corp.	40	40	0	1	Aug 5, 1977	Dec 31, 1984
65	Energas Company	40	40	0	0	Jun 28, 1989	Jun 26, 2002
66	MCM Operating, LLC	40	40	40	0	Mar 11, 2020	May 31, 2023
67	Firebird Energy LLC	38	38	38	0	Sep 17, 2020	Oct 3, 2022
68	Tamarack Petroleum Company, Inc.	35	35	0	17	Jul 11, 1977	Aug 21, 1989
69	Brazos Petroleum Co.	35	35	0	4	Jan 24, 1980	Aug 2, 1985
70	Anschutz Corporation, The	34	34	0	1	Oct 5, 1982	Dec 16, 1988
71	Earthstone Operating, LLC	33	33	33	0	Nov 30, 2018	Dec 22, 2022
72	BTA Oil Producers, LLC	30	30	30	9	Sep 24, 2015	Jul 20, 2021
73	Vital Energy, Inc.	30	30	30	1	Mar 21, 2025	Aug 13, 2025
74	Midpar L.P.	29	29	0	0	Mar 18, 1994	May 23, 1995
75	DE IV Operating, LLC	27	27	27	0	Dec 8, 2023	Oct 28, 2024
76	Midenergy Operating, LLC	27	27	0	0	Jun 7, 2010	Feb 15, 2014
77	Cities Service Oil & Gas Corp.	26	26	0	2	Aug 18, 1983	Jan 27, 1988
78	EXL Petroleum, LP	26	26	0	0	May 26, 2006	Nov 20, 2015
79	Hunt Oil Company	26	26	26	0	Jul 29, 2014	Jun 1, 2018
80	Mobil Oil Corporation	24	24	0	13	Jun 8, 1977	Oct 16, 1979
81	MWJ Producing Company	24	24	0	8	Jun 24, 1977	Jul 26, 1995
82	Resolute Natural Res. Co., LLC	24	24	10	3	Apr 17, 2013	May 6, 2014
83	HCW Exploration, Inc.	23	23	0	0	Aug 16, 1983	Feb 20, 1986
84	Murchison Oil & Gas Inc	21	21	13	7	Nov 29, 1994	Oct 9, 2018
85	Southland Royalty Company	21	21	0	2	Sep 6, 1983	Feb 28, 1994
86	Barron Operating LLC	20	20	0	0	Jul 22, 2009	Aug 25, 2009
87	Forest Oil Corporation	20	20	0	0	Mar 13, 2008	Jul 27, 2009
88	Prime Operating Company	19	19	12	10	Dec 5, 1994	Sep 10, 2013
89	Phillips Petroleum Company	19	19	0	6	Aug 8, 1977	Dec 27, 2000
90	Aqua Terra Permian, LLC	19	19	0	3	Jun 4, 2019	May 5, 2026
91	St. Mary Land & Exploration Co.	19	19	0	0	Apr 9, 2007	Mar 31, 2010
92	Sandridge Expl. and Prod., LLC	18	18	0	0	Jun 23, 2009	Nov 8, 2010
93	Wood & Locker, Inc.	18	18	0	0	Jun 21, 1979	Jul 21, 1981
94	Thomson-Monteith	16	16	0	0	Feb 2, 1982	Aug 21, 1984
95	JM Cox Resources, L.P.	15	15	0	25	Mar 10, 2004	May 8, 2017
96	Encore Operating, L.P.	15	15	15	0	Apr 21, 2006	Dec 3, 2008
97	Wilson Energy, Inc.	14	14	0	1	Feb 4, 1982	Apr 29, 1987
98	Hamman Oil & Refg. Co.	13	13	0	9	Jun 14, 2002	Nov 21, 2002
99	Baxter, Murphy H.	13	13	0	4	Aug 31, 1981	Feb 23, 1993
100	Davis & Carr Energy Co.	13	13	0	1	Feb 7, 1984	Feb 19, 1992
101	Ricks Exploration, Inc.	13	13	0	1	Dec 1, 1999	Jan 22, 2001
102	Bold Operating, LLC	13	13	11	0	Oct 21, 2014	Sep 15, 2017
103	G P II Energy, Inc.	13	13	6	0	Aug 26, 1996	Mar 28, 2001
104	Environmental Disposal Systems	12	12	0	2	Apr 6, 2017	Aug 22, 2023
105	Devon Energy Production Co, L.P.	12	12	2	1	Dec 11, 2007	Oct 26, 2015
106	Texas Crude Operator, Inc.	12	12	0	1	May 25, 2001	Dec 7, 2006
107	Adventure Exploration Ptrs, LLC	12	12	0	0	Feb 19, 2010	Dec 22, 2011
108	Four Star Oil and Gas Company	11	11	5	1	Jan 25, 1991	Jan 23, 2006
109	Sohio Petroleum Co.	11	11	0	1	Jul 28, 1977	Jul 15, 1983
110	Tempo Energy, Inc.	11	11	0	1	Feb 4, 1986	Jan 19, 1989
111	Rust Oil Corp.	11	11	0	0	Nov 21, 2008	Apr 13, 2015
112	Breitburn Operating L.P.	10	10	0	3	Nov 1, 2013	Jul 20, 2015
113	Thompson, J. Cleo	10	10	0	2	Jun 7, 1990	Sep 25, 2008
114	Enserch Exploration, Inc	10	10	0	1	Jan 20, 1978	Apr 17, 1985
115	Collins & Ware, Inc.	10	10	6	0	Mar 29, 1995	Dec 23, 1999
116	MGF Oil Corporation	10	10	0	0	Sep 19, 1979	Jul 1, 1982
117	PDC Energy	10	10	0	0	Sep 20, 2010	Jan 26, 2011
118	Western Gas Resources-Texas,inc.	10	10	0	0	Sep 23, 1993	Apr 15, 2004
119	Fourpoint Energy, LLC	9	9	9	7	Oct 28, 2024	Oct 28, 2024
120	Velocity Water Solutions, LP	9	9	0	6	Jul 22, 2019	Dec 3, 2025
121	EP Operating Company	9	9	0	2	Jun 19, 1985	Dec 12, 1990
122	Union Texas Petroleum Corp.	9	9	0	2	Dec 7, 1984	Nov 1, 1989
123	Abraxas Petroleum Corporation	9	9	0	1	Oct 16, 2000	May 23, 2011
124	Murchison Oil and Gas, LLC	9	9	9	1	Oct 9, 2018	May 15, 2020
125	Manzano Oil Corporation	9	9	0	0	Jan 14, 1994	Feb 13, 1996
126	Ocean Energy, Inc.	9	9	8	0	May 24, 2000	Jan 2, 2003
127	Trail Ridge Energy Prtns II LLC	9	9	7	0	Nov 18, 2014	Mar 17, 2016
128	WTG Exploration	8	8	0	10	Jun 25, 1987	May 18, 2007
129	Pioneer Production Corp.	8	8	0	7	Jul 24, 1979	Mar 22, 1984
130	Merit Energy Company	8	8	0	6	Nov 22, 2002	Feb 28, 2011
131	Southwest Royalties, Inc.	8	8	0	4	Dec 11, 1984	Mar 18, 2010
132	Cities Service Company	8	8	0	1	Sep 19, 1977	Aug 19, 1981
133	Midkiff, Hunter	8	8	0	1	Feb 27, 1978	Jun 25, 1985
134	Caza Operating, LLC	8	8	0	0	May 6, 2011	Jun 1, 2012
135	Continental U S Exploration, Inc	8	8	0	0	Dec 27, 1983	Mar 18, 1985
136	Hanley Petroleum Inc.	8	8	0	0	Oct 21, 1987	Sep 16, 1993
137	Mariner Energy, Inc.	8	8	0	0	Dec 14, 2006	Nov 27, 2007
138	Mobil Pipe Line Co.	8	8	0	0	Apr 5, 1991	Sep 15, 1995
139	Park Hill Disposal LLC	8	8	0	0	Mar 29, 2019	Dec 1, 2020
140	Samedan Oil Corporation	8	8	0	0	May 18, 1981	Feb 13, 1992
141	Tall City Brine LLC	7	7	0	6	Feb 1, 2016	Oct 28, 2025
142	FDL Operating, LLC	7	7	6	3	Jul 26, 2017	Sep 6, 2017
143	Solaris Water Midstream, LLC	7	7	0	3	Sep 19, 2016	Apr 2, 2020
144	Texas American Oil Corp.	7	7	0	2	Jul 10, 1980	Apr 24, 1985
145	Lacy & Byrd, Inc.	7	7	0	1	Oct 25, 1979	Jan 19, 1990
146	Bolger Operating Co.	7	7	6	0	Jun 18, 2001	Sep 4, 2012
147	Cola Petroleum, Inc.	7	7	0	0	Nov 21, 1977	May 12, 1980
148	Concho Resources Inc.	7	7	0	0	Sep 8, 1999	Dec 7, 2000
149	Dorchester Exploration, Inc.	7	7	0	0	Dec 31, 1980	Mar 7, 1983
150	Heritage Resources, Inc.	7	7	1	0	Sep 5, 1984	Aug 23, 2001
151	Ogr Operating Co, Inc.	7	7	0	0	Oct 13, 1983	Mar 27, 1986
152	Brown, Tom Inc.	6	6	0	20	Jun 21, 1979	Sep 27, 1985
153	EL Paso Natural Gas Co.	6	6	0	4	Nov 6, 1989	Sep 18, 1995
154	Ruger Properties, LLC	6	6	0	3	Jul 11, 2014	Mar 6, 2019
155	Basic Energy Services, L.P.	6	6	0	1	May 17, 2010	Oct 11, 2011
156	Meritage Energy Company, LLC	6	6	0	1	Jul 24, 2009	Feb 25, 2010
157	Rendova Oil Company, Inc.	6	6	0	1	Jan 28, 1994	Sep 21, 2000
158	Tmbr/Sharp Drilling, Inc.	6	6	0	1	Aug 15, 1991	Sep 12, 1997
159	XOG Operating LLC	6	6	0	1	Dec 2, 2005	Sep 14, 2011
160	3-M Energy Corporation	6	6	0	0	Jun 19, 1984	Jan 5, 2009
161	C & K Petroleum, Inc.	6	6	0	0	Oct 27, 1981	Nov 22, 1983
162	Dean Energy, Inc.	6	6	0	0	Oct 5, 2004	May 14, 2007
163	Environmental Dspl Systems, LLC	6	6	0	0	Jan 10, 2020	Sep 16, 2025
164	Odessa Exploration, Inc.	6	6	0	0	Jan 27, 1997	Oct 20, 1997
165	Overflow Energy, LLC	6	6	0	0	Jun 20, 2016	Sep 18, 2019
166	Piedra Operating, LLC	6	6	0	0	Jun 25, 2010	Jan 19, 2011
167	Umc Petroleum Corporation	6	6	0	0	Jan 18, 1996	Dec 16, 1996
168	Fasken, Barbara	5	5	0	6	Aug 15, 1986	May 9, 1995
169	PPC Operating Company LLC	5	5	0	6	Jul 21, 2015	Dec 30, 2015
170	Nearburg Producing Company	5	5	2	1	Apr 18, 2000	Feb 1, 2001
171	Wagner & Brown	5	5	0	1	Feb 24, 1981	Sep 24, 1992
172	Atmos Energy,west Texas Division	5	5	0	0	Dec 13, 2023	Mar 30, 2026
173	DE Operating LLC	5	5	0	0	Oct 31, 2016	Apr 5, 2017
174	Ogs Operating Company, Inc.	5	5	0	0	Dec 18, 1986	Jul 29, 1992
175	Primary Fuels, Inc.	5	5	0	0	Nov 24, 1986	Aug 8, 1988
176	Probity Operating, LLC	5	5	0	0	Feb 11, 2010	Oct 15, 2010
177	Tamaray, Inc	5	5	0	0	Oct 31, 1983	Jul 9, 1985
178	Vector Oil & Gas LP	5	5	0	0	Oct 5, 2009	Mar 28, 2013
179	Vencer Energy, LLC	5	5	5	0	Oct 11, 2022	Oct 13, 2022
180	Anadarko Petroleum Corp.	4	4	0	11	Jul 7, 1993	May 21, 2002
181	Dacott Oil & Gas, LLC	4	4	0	8	May 8, 2008	Jun 13, 2008
182	Getty Oil Co.	4	4	0	5	Jun 21, 1978	Jun 7, 1984
183	Atlantic Richfield Co.	4	4	0	4	Jul 25, 1977	Jul 24, 1978
184	Lemon, Hulen H.	4	4	0	4	Oct 31, 1978	Jul 2, 1980
185	Citation Oil & Gas Corp.	4	4	0	3	Sep 1, 1992	Sep 5, 2014
186	Amrich Operating, LLC	4	4	0	2	Feb 3, 2016	Mar 12, 2019
187	Permian Resources, Inc.	4	4	0	2	Oct 1, 1986	Mar 15, 1993
188	EOG Resources, Inc.	4	4	3	1	Jan 11, 2006	Feb 28, 2008
189	Pbex Operations, LLC	4	4	0	1	Jun 21, 2017	Jun 21, 2017
190	RBJ & Associates, LP	4	4	0	1	Jan 24, 2017	Jun 7, 2019
191	Abraxas Production Corporation	4	4	0	0	Dec 5, 1994	Dec 6, 1994
192	Alon USA, LP	4	4	0	0	Sep 5, 2001	Nov 13, 2003
193	Baxter, D. B. Inc.	4	4	0	0	Apr 14, 1982	Jan 17, 1985
194	Brothers Production Company Inc.	4	4	0	0	Mar 15, 2006	Mar 28, 2006
195	CJ Energy, LLC	4	4	0	0	Mar 2, 2006	Feb 18, 2011
196	Double Drop SWD, LLC	4	4	0	0	Mar 4, 2020	Mar 31, 2022
197	Energy Transfer Company	4	4	0	0	Oct 3, 2024	Nov 25, 2024
198	Flying W Resources, LLC	4	4	0	0	Oct 5, 2009	Dec 22, 2009
199	Hillin Prod. Co.	4	4	0	0	Sep 25, 1985	Nov 20, 1987
200	Holly Energy Partners-OP, L.P.	4	4	0	0	Apr 18, 2011	Oct 19, 2018
201	Mojave Energy	4	4	0	0	Aug 2, 1982	Jun 6, 1983
202	Permian Aqua Logistics, LLC	4	4	0	0	Aug 18, 2020	Mar 25, 2021
203	Purvis, J. H.	4	4	0	0	Jan 4, 1980	Dec 31, 1980
204	Rising Star Energy, L.L.C.	4	4	0	0	Dec 1, 1999	Jul 17, 2003
205	Rosewood Resources, Inc.	4	4	0	0	Apr 11, 1985	Apr 22, 1988
206	Wasser Operating, LLC	4	4	0	0	Sep 30, 2014	Sep 22, 2016
207	Westar Energy, Inc.	4	4	0	0	Apr 24, 1996	Jul 12, 2005
208	Whittier Operating Inc.	4	4	0	0	Jul 13, 2006	Aug 15, 2006
209	Langford & Brigham Operating LLC	3	3	3	16	Feb 18, 2025	Feb 18, 2025
210	Langham Petroleum Expl. Corp.	3	3	0	16	May 11, 1990	Sep 2, 1992
211	BP America Production Company	3	3	2	6	Aug 28, 2001	Aug 9, 2004
212	Overflow Energy Permian, LLC	3	3	0	5	Feb 23, 2023	Aug 19, 2026
213	Edmar Company, L.L.C.	3	3	0	3	Aug 29, 2002	Aug 26, 2013
214	Rattler Midstream Operating LLC	3	3	0	3	Jan 14, 2022	Jan 19, 2022
215	Arkland Producing Co., Inc.	3	3	0	2	Mar 31, 1998	Apr 12, 2016
216	Coastal Oil & Gas Corporation	3	3	0	2	Jul 1, 1985	Mar 9, 1987
217	Purvis Operating Co.	3	3	0	2	Apr 11, 2013	Oct 29, 2014
218	Amerada Hess Corporation	3	3	0	1	Dec 1, 1980	Aug 2, 1994
219	Ashland Exploration, Inc.	3	3	0	1	Oct 31, 1977	Apr 10, 1978
220	EP Operating Limited Partnership	3	3	0	1	Jan 15, 1993	Mar 9, 1993
221	Marienfeld Exploration	3	3	0	1	Dec 17, 1985	Aug 28, 1987
222	SE USA Operating, Inc.	3	3	0	1	Sep 6, 2008	Dec 18, 2009
223	Acme Energy Services, Inc.	3	3	0	0	Jul 16, 2001	May 7, 2009
224	Alto Minerals, Inc.	3	3	0	0	Sep 6, 1990	May 19, 1999
225	Athlon FE Operating LLC	3	3	0	0	Jan 2, 2013	Oct 29, 2013
226	Branum, M.W.	3	3	0	0	May 6, 1983	Mar 7, 1984
227	Branum Petroleum, Inc.	3	3	0	0	May 19, 1986	Oct 7, 1986
228	Candelero Oil & Gas Company	3	3	0	0	Jul 2, 1996	Feb 3, 1997
229	Costex Resources, Inc.	3	3	0	0	Dec 27, 1985	May 27, 1986
230	Devonian, Inc.	3	3	0	0	Oct 22, 1984	Feb 14, 1986
231	Fasken, David & Inez G.	3	3	0	0	Sep 16, 1983	Mar 13, 1985
232	Felmont Oil Corp.	3	3	0	0	Sep 19, 1984	May 2, 1985
233	Henderson & Erickson, Inc.	3	3	0	0	Mar 9, 2012	Jul 1, 2013
234	Magellan Pipeline Company, L.P.	3	3	0	0	Feb 5, 2020	Apr 8, 2022
235	Maralo, LLC	3	3	1	0	Oct 30, 2000	Oct 30, 2000
236	MTN Energy Inc	3	3	0	0	Dec 7, 2010	Jul 9, 2012
237	Nabors Well Services Co.	3	3	0	0	Mar 1, 2012	Sep 20, 2012
238	Naumann Oil & Gas, Inc.	3	3	0	0	Dec 1, 2010	Mar 30, 2021
239	ON Point Oilfield Operations LLC	3	3	0	0	May 11, 2017	Jun 7, 2018
240	Placid Oil Company	3	3	0	0	Mar 11, 1992	Dec 22, 1992
241	Plains Marketing, L.P.	3	3	0	0	Sep 19, 2000	Sep 19, 2000
242	Plains Pipeline L.P.	3	3	0	0	Sep 28, 2005	Sep 9, 2015
243	RBJ & Associates, LLC	3	3	0	0	Jul 23, 2010	Oct 16, 2013
244	Rex Energy Operating Corp.	3	3	0	0	Dec 18, 2007	Dec 18, 2007
245	Samson Lone Star, LLC	3	3	0	0	Jul 11, 2007	Mar 24, 2008
246	Santa FE Minerals, Inc.	3	3	0	0	Sep 29, 1983	Jun 24, 1987
247	Shenandoah Petroleum Corporation	3	3	0	0	Sep 18, 2018	Jun 23, 2022
248	Snyder Oil Corporation	3	3	0	0	Jun 20, 1994	Jun 22, 1994
249	Tall Dune Resources, LLC	3	3	0	0	Feb 16, 2022	Mar 2, 2022
250	Targa PL Mid-Cont Westtex LLC	3	3	0	0	Sep 15, 2017	Sep 22, 2022
251	Texas Crude Oil Co.	3	3	0	0	Mar 16, 1979	Jun 30, 1981
252	Torch Operating Company	3	3	0	0	Oct 3, 1990	Jul 19, 1991
253	Trail Mountain, Inc.	3	3	0	0	Feb 16, 1993	Feb 16, 1993
254	Wagner Oil Company	3	3	0	0	Nov 24, 2003	Jul 10, 2012
255	Wilson Energy, Inc./Lawless	3	3	0	0	Jul 7, 1983	Aug 19, 1983
256	Atlantic Operating, Inc.	2	2	0	8	Oct 1, 2012	Oct 1, 2012
257	Carlow Corp.	2	2	0	5	Dec 5, 1986	Mar 28, 1988
258	Pilot Water Solutions Permianllc	2	2	0	3	Jun 7, 2019	Jun 7, 2019
259	Halvey Energy Co.	2	2	0	2	Sep 28, 1977	May 9, 1978
260	O'Neill Properties, Ltd.	2	2	0	2	Dec 5, 1983	Nov 27, 1984
261	Qualia, C. F. Operating Inc.	2	2	0	2	Mar 4, 1992	Jun 17, 1992
262	Standard Oil Production Company	2	2	0	2	Jun 30, 1987	Dec 31, 1987
263	Texaco Producing Inc.	2	2	0	2	Mar 28, 1989	Mar 12, 1990
264	Trilogy Operating, Inc.	2	2	0	2	Mar 10, 2009	May 10, 2011
265	Wagner & Brown, Ltd.	2	2	0	2	Jul 15, 2010	Jul 15, 2010
266	Wilson Systems, Inc.	2	2	0	2	Apr 5, 1982	Feb 11, 1983
267	Brahaney Drilling Co.	2	2	0	1	Apr 5, 1979	Dec 11, 1979
268	Gen. Amer. Oil Co. of Texas	2	2	0	1	Jul 25, 1977	Nov 6, 1978
269	Great Western Drlg. Co.	2	2	0	1	Feb 8, 1990	Feb 8, 1990
270	Hendon, William E., Jr.	2	2	0	1	Sep 26, 1979	Jul 14, 1981
271	Indian Wells Oil Company	2	2	0	1	Jun 26, 1981	Oct 15, 1981
272	Maralo, Inc.	2	2	0	1	Oct 26, 1983	Nov 21, 1983
273	Pro- Gas, Inc.	2	2	0	1	Dec 23, 1986	Jun 24, 1987
274	RP Operating, L.L.C.	2	2	2	1	Nov 4, 2015	Nov 4, 2015
275	Sun Expl. & Prod. Co.-Midland	2	2	0	1	Jan 25, 1988	Sep 2, 1988
276	Tejas Permian Operating, LLC	2	2	0	1	Jan 28, 2020	Aug 8, 2025
277	Williamson, Ralph E.	2	2	0	1	Dec 31, 1980	May 12, 1981
278	Aggietech Oil, Ltd.	2	2	0	0	Apr 16, 2012	Apr 16, 2012
279	American Petrofina Pipe Line Co.	2	2	0	0	Apr 17, 1991	Feb 14, 1996
280	Amoco Production Company	2	2	0	0	Mar 30, 1982	Dec 22, 1992
281	Atlantic Exploration, LLC	2	2	0	0	Oct 1, 2012	Oct 1, 2012
282	Atlas PL Mid-Cont. Westtex, LLC	2	2	0	0	Feb 8, 2008	Jul 18, 2014
283	Atmos Pipeline - Texas	2	2	0	0	Jul 27, 2006	Aug 24, 2006
284	Cambrian Management Ltd	2	2	0	0	Jul 27, 2006	Jul 27, 2006
285	Coseka Resources (U.S.A.) Ltd.	2	2	0	0	Sep 15, 1983	Aug 8, 1985
286	Double T Energy LLC	2	2	0	0	Jan 21, 2026	Jan 30, 2026
287	Enstar Petroleum, Inc.	2	2	0	0	Oct 18, 1983	Jul 23, 1984
288	Enterprise Products Operatingllc	2	2	0	0	Jul 23, 2010	Aug 19, 2013
289	Floyd, Jay H. Jr. & Floyd, R. C.	2	2	0	0	Oct 3, 1977	Jan 23, 1979
290	Gco Drilling Company	2	2	0	0	Jun 8, 1987	Jun 8, 1987
291	Gulf Oil Exp. & Prod. Co.	2	2	0	0	Oct 23, 1979	Nov 9, 1979
292	Hat Oil & Gas, Inc.	2	2	0	0	Sep 7, 1990	Sep 7, 1990
293	High Roller Wells, L.L.C.	2	2	0	0	May 24, 2013	Aug 18, 2014
294	Lothian Oil Texas I, Inc.	2	2	0	0	Nov 9, 2006	Jan 24, 2007
295	Magellan Pipelines Holdings,l.p.	2	2	0	0	Apr 14, 2020	May 6, 2020
296	Midland Resources, Inc.	2	2	0	0	Aug 14, 1987	May 23, 1988
297	Mojave Operating Company	2	2	0	0	Mar 12, 1997	May 26, 1998
298	Mulloy Operating, Inc.	2	2	0	0	Mar 29, 2011	Mar 29, 2011
299	National Coop Refinery Assoc	2	2	0	0	Feb 5, 1979	Jul 10, 1989
300	Panada Exploration, Inc.	2	2	0	0	Oct 14, 1991	Jun 4, 1992

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