Petrora

COUNTIES · STARR · OPERATORS

Starr 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 year3 years10 yearsAll time
#OperatorPermitsAll timeHorizontalWellsFirstLast
1Killam Oil Co., Ltd.198098Feb 20, 2026Feb 20, 2026
2Petrovybe Opco LLC11074Apr 23, 2026Apr 23, 2026
3Triad O&G, LLC1505Mar 27, 2026Mar 27, 2026
4Mueller Exploration, Inc.1202Jan 5, 2026Jan 5, 2026
5Ilex Energy Corporation1100Mar 10, 2026Mar 10, 2026
6Merit Energy Company—230470——
7Zenergy Inc/Reef Exploration Inc—00402——
8Sun Exploration & Production Co.—1120218——
9Sun Expl. & Prod. Co.-Corpus—4480217——
10Hilcorp Energy Company—260201——
11Exxon Corp.—3960188——
12Mountain V Texas LLC—00170——
13Wagner Oil Company—120134——
14Oryx Energy Company—2940126——
15Kerr-McGee Oil & Gas Onshore LLC—2410118——
16Conoco Inc.—2600106——
17Exxon Mobil Corporation—16073——
18RNS Oil Co.—0063——
19Continental Oil Company—34062——
20Varas Energy Operating Company—0058——
21Tenneco Oil Co.—94055——
22Poor Boy Oilfield Service—0055——
23Mortimer Production Company—27051——
24Fina Oil & Chemical Company—226043——
25Trap Rock Oil, Ltd.—41043——
26Momentum Production Corp.—0043——
27Kerr-McGee Oil & Gas Onshore LP—170042——
28Osborn Heirs Company—16039——
29Alvarez & Alvarez—0035——
30Texas Independent Explor., Inc.—175031——
31Orphan Wells LLC—0029——
32Shell Western E&P—139028——
33Corpus Christi Oil & Gas Co.—34026——
34Faulconer Energy LLC—0026——
35Neuhaus, V. F. Properties, Inc.—52024——
36McGuffin, D. B.—4024——
37Southern Tejas Asset Group LLC—2024——
38Shell Western E&P Inc.—50023——
39Humble Oil & Refining Co.—0023——
40Orx Resources L.L.C.—0023——
41OXY USA Inc.—60022——
42Reh Energy, Inc.—11022——
43EOG Resources, Inc.—86021——
44Shell Oil Company—62021——
45Forest Oil Corporation—31021——
46Remco Oil & Gas Production Inc.—0021——
47Noble Energy Inc—13020——
48Texaco Inc.—51019——
49Breck Operating Corp.—1019——
50Cameron, Paul E., Jr., Inc.—27018——
51Neuhaus, V. F.—21018——
52Bengail, Inc—1018——
53Wagner, Duer & Co.—38017——
54Dugger Glenn—0017——
55J. & M. Well Service, Inc.—12016——
56Starr Operating LLC—0016——
57EL Paso E & P Company, L. P.—46015——
58Texas Independent Explor Ltd.—15015——
59Samedan Oil Corporation—84014——
60Integrated Operating Corporation—14014——
61Dinero Oil Company—0014——
62Smith Production Inc.—115013——
63Newgulf Petroleum, LLC—48013——
64Sun Expl. & Prod. Co.-Houston—48013——
65Mueller Engineering Corp.—30013——
66Hanson Production Company—22013——
67Ress Production Co.—0013——
68Caribbean Energy LLC II—0012——
69Cantera Operating, LLC—11011——
70Starco Exploration, Inc.—16010——
71Apache Corporation—15010——
72Cities Service Oil Co.—0010——
73Geochemical Surveys Inc.—0010——
74Interfirst Bank Galveston N.A.—0010——
75Legend Natural Gas III, LP—5709——
76Tasca Exploration Company—3709——
77Ladd Petroleum Corp.—509——
78Overton Park Oil & Gas LP—309——
79Alpha Oil & Gas LLC—009——
80Trinity River Energy Oper LLC—009——
81Coastal Oil & Gas Corporation—22608——
82Harkins & Company—5708——
83Samson Lone Star LP—4008——
84Mortimer Exploration Company—3408——
85Total E&P USA, Inc.—2808——
86Kebo Oil & Gas, Inc.—2608——
87Dinero Oil Corporation—908——
88Champlin Petroleum Co.—808——
89Osborn, W. B. Operator—308——
90Energy 2000, Inc.—108——
91Nadcf Recovery Group Inc.—008——
92Operator P-5 Not on File—008——
93M. J. G., Inc.—3907——
94Carrizo Oil & Gas, Inc.—2707——
95Cabot Petroleum Corporation—2407——
96White Oak Operating Company LLC—1907——
97Fischer Petroleum Corporation—1107——
98Doran Energy Corporation—807——
99Energy Reserves Group, Inc.—307——
100Coastal States Gas Prod. Co.—107——
101Scorpion Operating, Inc.—107——
102Brazos Petroleum Inc.—007——
103Clark Fuel Producing Company—007——
104Clinton Oil Co.—007——
105Lakeshore Operating LLC—007——
106Magnum Engineering Company—007——
107Mokeen Oil Company—007——
108Phillips Petroleum Company—007——
109Totalfinaelf E&P USA Inc—4206——
110Star of Texas Energy Srvs, Inc.—1506——
111Osborn,w.b. Oil & Gas Operations—1306——
112Amax Oil & Gas Inc.—1206——
113Hughes & Hughes—1006——
114Conocophillips Company—806——
115Texas Oil & Gas Corp.—706——
116Kimmell, C. E.—506——
117Crockett, M. W.—406——
118Falcon Production Co.—306——
119Tepee Petroleum Co., Inc.—306——
120Petro-Hunt Corporation—206——
121Escudo Oil & Gas LLC—006——
122Jennings C. A.—006——
123Mobil Oil Corporation—006——
124Starr County Cattle Company—006——
125Western Global Oil Inc—006——
126White Stride LLC—006——
127EL Paso Production Oil & Gas Co.—14305——
128Legacy Corporation, The—3105——
129Milagro Exploration, LLC—3005——
130Wright Brothers Energy, Inc.—1705——
131Dewbre Petroleum Corporation—1005——
132Hawn Brothers—605——
133Lemarco Operating, Inc.—505——
134Pitco Investments, Ltd.—505——
135Duty Oil Co.—305——
136Sinclair Minerals, Inc.—205——
137Marwell Petroleum Ltd Partnrship—105——
138Burns Bobby M. & Cox Edwin L.—005——
139Coates Energy Interests Ltd.—005——
140Continental Operating Co.—005——
141Fargo Oil & Gas LLC—005——
142Santa Rita Holdings LLC—005——
143Schiefelbein Oil & Gas Company—005——
144Score Energy Company—005——
145Three C Exploration LLC—005——
146Transpacific Energy LLC—005——
147Turner & Fiske—005——
148Peoples Energy Prod.-TX, L.P.—6904——
149Transtexas Gas Corporation—6704——
150Exaro Energy II, LLC—2904——
151Bluestone Natural Res. II, LLC—2004——
152Suemaur Exploration, Inc.—2004——
153Coronado Energy E&P Company, LLC—1404——
154Jones, J. Paul—1104——
155Coates, George H. Estate OF—804——
156L & B Oil and Gas Equipment, LLC—604——
157Royal Production Company, Inc.—604——
158Pyle Petroleum Inc.—304——
159Hope, Alvin C. Estate OF—204——
160Altman Energy, Inc.—104——
161CTR Petroleum, Inc.—104——
162Energy Sources, Inc.—104——
163Quigley, T. M.—104——
164Trek Resources, Inc.—104——
165Vessels, Tom—104——
1663 & 1 Trusts & Cox Edwin L.—004——
167EL Reno Energy LLC—004——
168Janan Oil Company—004——
169South Texas Petroleum LLC—004——
170Wayne E. Glenn Associates Inc.—004——
171Sanchez-O'Brien Oil & Gas Corp.—8703——
172Edge Petroleum Oper. Co., Inc.—5603——
173Linder Oil Company,a Partnership—2103——
174Tri-C Resources, Inc.—1903——
175Coates Energy Trust—1803——
176Manges, Clinton—1703——
177Lpes, Inc.—1603——
178Eads Operating Co.—1403——
179BNP Petroleum Corporation—903——
180BPL Exploration, Ltd.—703——
181Natural Gas Gatherers—703——
182Newman Operating Company—703——
183Opex Energy, LLC—703——
184Ricochet Energy, Inc.—603——
185True Oil Company—603——
186Akm Company—503——
187Ceniza Petroleum, Inc.—503——
188Howard Exploration, Inc.—503——
189Dahco Operating, LLC—303——
190Flournoy Production Co.—303——
191TNT Petroleum Company, Inc.—303——
192Hunter Petroleum Inc.—203——
193Bruington Operating, L.L.C.—103——
194Jenkins, Winston—103——
195Kaiser-Francis Oil Company—103——
196Pearl, Bill H. Productions, Inc.—103——
197Acock Operating Limited—003——
198Amrwr LLC—003——
199Bentsen-Whittington Oil Company—003——
200Berry Philip B.operating Co.inc.—003——
201Birdwell W. Russell—003——
202Bishop Petroleum Inc.—003——
203Coates George H.—003——
204Cripple Creek Oil Company—003——
205Duquesne Natural Gas Company—003——
206G. & M. Energy Company—003——
207Hackberry Realty Inc.—003——
208Jackson Energy Development Inc.—003——
209Jilpetco Inc.—003——
210Martin Ronald L.company The—003——
211Milam Petroleum Company—003——
212Morningstar Gas Inc.—003——
213Mueller Joseph P.—003——
214Parva Petroleum Company—003——
215Phe (Texas) Inc.—003——
216Shepherd G. Frederick—003——
217Steward Edwards & Associates—003——
218Stonegate Operators Inc.—003——
219Tamarack Petroleum Company Inc.—003——
220Vac Stop SWD LLC—003——
221Valence Operating Company—003——
222XTO Energy Inc.—003——
223Hanson Minerals Co.—7102——
224Houston Exploration Company, The—4202——
225Glenn, Wayne E. & Assoc., Inc.—3602——
226Hughes, Dan A. Company—2602——
227Union Pacific Resources Company—2602——
228Ascent Energy, Inc—2102——
229Headington Oil Company, L.P.—1902——
230Agco Petroleum Company—1502——
231Border Exploration Co.—1402——
232Hughes, Dan A. Company, L.P.—1302——
233Alpha Omega Petroleum, Inc.—1102——
234Kerr-McGee Corporation—1102——
235Pyle Petroleum—1102——
236Rlu Operating, LLC—1102——
237Quisto Expl. & Production, L.C.—1002——
238Cox Oil & Gas, Inc.—902——
239Hand, Kenneth R.—802——
240Reveille Resources—802——
241Cordele Development Corporation—702——
242Greenbrier Oper. Co.—702——
243Lanita Oil, LLC—602——
244Pogo Producing Company LLC—602——
245Prolithic Energy Company, L.P.—602——
246Southwest Oil & Land, Inc.—602——
247Trap Rock Oil Company—602——
248J-O'B Operating Company—502——
249Barrett Brothers Oil & Gas, Inc.—402——
250Mayfair Minerals, Inc.—402——
251Cimarron Engineering Corp.—302——
252Modern Exploration, Inc.—302——
253Buss Oilfield Services, Inc.—202——
254Comstock Oil & Gas, LP—202——
255Hamon, Jake L.—202——
256Central Producers, Inc.—102——
257Denovo Oil & Gas, Inc.—102——
258Marquee Corporation—102——
259Petrotex Management Co.—102——
260Rincon Gas, Inc.—102——
261Valley Vacuum Trucks, Inc.—102——
262Anadarko E&P Company LP—002——
263Brown George R.—002——
264Burleson Haze—002——
265Citation Oil & Gas Corp.—002——
266Coastal Bend Operators Inc.—002——
267Corpus Christi Leaseholds Inc.—002——
268Corpus Christi Management Co.—002——
269Cox & Cox Production Co.—002——
270Cox & Hamon—002——
271Crystal Oil and Land Co.—002——
272Dyno Texas LLC—002——
273EL Falcon Oil Co.—002——
274EP Energy E&P Company L.P.—002——
275Gruy Petroleum Management Co.—002——
276Huisache Operating Co.—002——
277Hydrocarbon Operating Inc.—002——
278Logue and Patterson Inc.—002——
279Magnum Producing & Operating Co.—002——
280Maple Gulf Coast Properties Corp—002——
281Marquee Corp./Sasser Oil & Gas—002——
282Mason & Company Inc.—002——
283Mission River Systems Inc.—002——
284Moncrief James E.—002——
285P.B. Production Inc.—002——
286Pickens Company Inc. The—002——
287Plains Exploration & Prod. Co.—002——
288Platinum Oil & Gas L.L.C.—002——
289Prevail Energy Incorporated—002——
290Socony Mobil Oil Company Inc.—002——
291Stoddard J. B. Deceased Est.of—002——
292Texas Independent Petroleum Inc—002——
293Texas Les & Co.—002——
294Trinity Energy Corp.—002——
295Tyludadeda LLC—002——
296U. N. Industries Inc.—002——
297Vision Oil and Gas LLC—002——
298Thorp Petroleum Corporation—4401——
299Wynn-Crosby Energy, Inc.—3301——
300Bass Enterprises Production Co.—2901——

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