Petrora

COUNTIES · COLORADO · OPERATORS

Colorado 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
1Strand Energy, L.C.118012Aug 31, 2026Aug 31, 2026
2Shiner Exploration, LLC1302Sep 14, 2026Sep 14, 2026
3Zinn Petroleum Company—00394——
4Shell Oil Company—26067——
5Remora Management LLC—0047——
6Jamex, Inc.—72046——
7Garrison Ltd.—50027——
8Everest Resource Company—45026——
9Wagner, Duer & Co.—18026——
10C & E Operating, Inc.—71025——
11Owl Petroleum Company—26024——
12Hilcorp Energy Company—32021——
13Prairie Producing Company—33017——
14Cities Service Oil Co.—2017——
15Middleton Oil Company—21014——
16Wagner Oil Company—47013——
17Cox & Perkins Exploration, Inc.—33013——
18Shell Western E&P Inc.—14013——
19Goldking Prod. Co.—12013——
20Petrovybe Opco LLC—0013——
21OXY USA Inc.—99012——
22Mitchell Energy Corporation—60012——
23B D Production Co., Inc.—19012——
24Riley Jim—0012——
25Magnum Producing, LP—21011——
26Dynamic Production, Inc.—16011——
27Geodominion Petroleum—16011——
28Sue-Ann Operating, L.C.—13011——
29Magnum Producing & Operating Co.—53010——
30Square Mile Energy, L.L.C.—29010——
31Sundown Energy LP—26010——
32XTO Energy Inc.—12010——
33Cameron, Paul E., Jr., Inc.—9010——
34Devon Energy Operating Co. L.P.—0010——
35Proline Energy Resources Inc—0010——
36TXO Production Corp.—7009——
37Kaiser-Francis Oil Company—2709——
38Prime Operating Company—2509——
39Seagull Operating Co. Inc.—409——
40Messy Oil and Gas, LLC—109——
41American Energy Partners, Inc.—2008——
42Josey, Lenoir M., Inc.—1708——
43Acock/Anaqua Operating Co., LP—808——
44Mosaic Oil LLC—008——
45Quintana Pet. Corp.—7807——
46Newitt, Louis A.—2407——
47Ross Production Co.—1607——
48Camoil, Inc.—1507——
49Rodessa Operating Company—1407——
50Acco Oil & Gas Company—507——
51Viper S.W.D., LLC—207——
52Mobil Oil Corporation—107——
53Mosbacher Robert—007——
54Unit Petroleum Corporation—007——
55Aurora Resources Corporation—3206——
56Cico Oil & Gas Co.—2006——
57Hamman Oil & Refg. Co.—2006——
58Marquee Corporation—1606——
59Superior Oil Company, The—1206——
60Sue-Ann Oil & Gas Company—1106——
61Ginther,n.c., Contract Operator—506——
62Gemarmi Inc.—206——
63Mitchell Energy Company L.P.—206——
64Mobil Producing TX. & N.M. Inc.—3805——
65Arco Oil & Gas Co.—3205——
66Haber Oil Company, Inc.—1805——
67Shana Petroleum Company—1805——
68Akg Operating Company—1605——
69American Shoreline, Inc.—1305——
70Indexgeo & Associates, Inc.—1305——
71Everest Minerals Corp.—1205——
72Newfield Exploration Company—1105——
73Talon Development Co., Inc.—1105——
74New Century Exploration, Inc.—705——
75Ballard Exploration Company,inc.—605——
76Rutta, Jim—505——
77Bass Enterprises Production Co.—405——
78Enserch Exploration, Inc—405——
79Wilson, Edward C. Jr.—305——
80Wilson, E. C. Enterprises, Inc.—205——
81Atlantic Richfield Co.—005——
82Double B Oil & Gas—005——
83Rusk Energy Operating LLC—005——
84Tarpon Oil Company—005——
85Exxon Corp.—3904——
86Texas Oil & Gas Corp.—2504——
87Lone Oak Energy Inc—2404——
88Lynbrook Oil Company—1404——
89Neumin Production Company—1004——
90Frio Exploration Company—804——
91Brannon, M. J.—704——
92Modern Exploration, Inc.—604——
93J3 Oil Co., Inc.—504——
94Lighthouse Operating, Inc.—504——
95Dewbre Petroleum Corporation—404——
96Joy Resources, Inc.—404——
97Adobe Resources Corporation—204——
98Digital Operating Company LLC—004——
99Intercoastal Production Co.—004——
100Operator P-5 Not on File—004——
101Orx Resources L.L.C.—004——
102Silver Star Operating Co. LLC—004——
103Transfuel Resources Company—004——
104Getty Oil Co.—2103——
105Tri-C Resources, Inc.—2003——
106Walter Oil & Gas Corporation—1903——
107Enron Oil & Gas Company—1503——
108Sue-Ann Production Company—1403——
109Cabot Oil & Gas Corporation—1303——
110Cobra Oil & Gas Corporation—1103——
111Peoples Energy Prod.-TX, L.P.—1003——
112Howard Exploration, Inc.—903——
113Gainco, Inc.—703——
114Hurd Enterprises, Ltd.—703——
115Mosbacher Production Co.—703——
116United Texas Petroleum Inc.—603——
117Davis Oil Company—503——
118Enterprise Resources, Inc.—503——
119Natural Resources Corporation—503——
120Palmer Petroleum Inc.—503——
121Wallace Co., Inc.—503——
122Atapco—403——
123Hgi Corporation—403——
124Zachry Exploration, Inc.—403——
125Dixon Management Corp.—103——
126Coastal Production Company Inc.—003——
127Everest Exploration II—003——
128Finley Resources Inc.—003——
129Gulf Oil Corp.—003——
130Gulftide Gas Corporation—003——
131Hamill Claud B.—003——
132Mitchell Geo. & Assoc. Inc.—003——
133Pacer-Atlas Inc.—003——
134Seguro Well Service Inc.—003——
135Skelly Oil Co.—003——
136Southeastern Public Service Co.—003——
137Texana Operating Company—003——
138Tri-C Resources Partners I LLC—003——
139Dominion Expl. & Prod., Inc.—4002——
140Auburn Enterprises, Inc.—2402——
141Rosetta Resources Operating LP—1502——
142Bridge Oil Production Co., Inc.—1402——
143EP Operating Company—1302——
144Glacier Energy, Inc.—1202——
145Jamex II Ltd., L.L.P.—1202——
146Zinn Petroleum Co.—1102——
147Hanson Minerals Co.—902——
148Property Producing Co.—902——
149Swift Energy Company—802——
150United Oil & Minerals, Inc.—802——
151Apache Corporation—702——
152Samson Resources Company—702——
153Amerada Hess Corporation—602——
154Shanghai Energy Corporation—602——
155Whitehead Prod. Co., Inc.—602——
156Zachry Exploration, Ltd.—602——
157EOG Resources, Inc.—502——
158Konantz, Ronald J. Inc.—502——
159M-G Gas Company, Inc.—502——
160Tee Operating Co.—502——
161Texcan Resources Corp.—502——
162Alamo Operating Company, L. C.—402——
163Dennis, L.W. & Associates, Inc.—402——
164Pg&e Resources Company—402——
165Castex Energy, Inc.—302——
166Chapman, Roger Inc.—302——
167Gasper Rice Resources, Ltd.—302——
168Petro-Lewis Corporation—302——
169Energy Sources, Inc.—202——
170Mascot Oil Company—202——
171McCord Exploration Co.—202——
172Stone & Webster Oil Company, Inc—202——
173Texaco Inc.—202——
174Texas Gulf Gas Corporation—202——
175Vistatex Energy LLC—202——
176Bradco Oil & Gas Co.—102——
177Buttes Resources Company—102——
178Caddo Oil Company, Inc.—102——
179Crown Central Petroleum Corp.—102——
180Devon Energy Production Co, L.P.—102——
181Elliott Oil & Gas Operating Co.—102——
182Enex Resources Corporation—102——
183Express Oil Co.—102——
184Harrison, Dan J., Jr.—102——
185Marathon Oil Company—102——
186Occidental Energy Company, Inc.—102——
187Pioneer Resources Producing, L.P—102——
188Sellers Lease Service, Inc.—102——
189Southwest Minerals, Inc.—102——
190Amoco Production Co.-Alvin—002——
191Amrwr LLC—002——
192Anadarko Production Company—002——
193Cimarex Energy Co. of Colorado—002——
194Coastal Oil & Gas Corporation—002——
195Culberson Well Service Inc.—002——
196D-Mil Production Inc.—002——
197Falcon Acquisitions L.C.—002——
198Harvard Petroleum Corporation—002——
199Hill & Hill—002——
200HRB Operating Company Inc.—002——
201Lakeshore Operating LLC—002——
202Lively Exploration Company—002——
203Lone Star Prod. Co.—002——
204Mag Exploration LLC—002——
205Marine Contrac. & Supply Inc.—002——
206M. E. Operating & Services Inc.—002——
207Newitt & Palmer—002——
208Newmont Oil Company—002——
209Oklatex Oil & Gas Company—002——
210Petropro Energy Partners L.P.—002——
211Philcon Development Co.—002——
212Phillips Petroleum Company—002——
213Plum Oil & Gas—002——
214Quanah Operating LLC—002——
215Ramtex Energy LLC—002——
216Samson Exploration LLC—002——
217Sandel Energy Inc.—002——
218Sinclair Carl Oil Well Service—002——
219Strata Resources—002——
220Teal Petroleum Company—002——
221Texas Gulf Production Co. LLC—002——
222Texas Pacific Oil Co.—002——
223Trice Prod. Co.—002——
224Wadsworth A. H. Jr.—002——
225Weathers Exploration Inc.—002——
226Wilmar Oil Co. Inc.—002——
227Wiseman White & Benham—002——
228Samson Lone Star LP—2701——
229Sabre Exploration Corporation—1301——
230Sue-Ann Operating Co.—1201——
231Cities Service Oil & Gas Corp.—1101——
232Page Petroleum Inc.—1101——
233Brannon Oil & Gas, Inc.—1001——
234Cities Service Company—1001——
235Heritage Operating Co., Inc. The—801——
236Lomak Production Company—801——
237Smith, Joe E.—801——
238Hetco Oil & Gas Co., Inc.—701——
239Hoc Operating Co., Inc.—701——
240Mowata Oil Company—701——
241Conquest Exploration Company—601——
242CPX Petroleum, Inc.—601——
243LMN Oil and Gas, Inc.—601——
244Petroleum Unlimited, Inc.—601——
245Pyro Energy Corp.—601——
246Samson Lone Star, LLC—601——
247Wainoco Oil & Gas Company—601——
248Dreyfus, Louis Natural Gas Corp—501——
249Global Natural Resources Corp.—501——
250Hydrocarbon Gathering, Inc.—501——
251Lone Star Exploration Corp.—501——
252Petrosearch Operating Co, LLC—501——
253Slawson, Donald C.—501——
254Teamco Operating LLC—501——
255Adena Exploration, Inc.—401——
256Atwood Exploration Company—401——
257Consolidated Southern Corp.—401——
258Goldston Oil Corp.—401——
259Gulfstream Petroleum Corp.—401——
260Kilroy Company of Texas, Inc.—401——
261Mohican Oil & Gas, L.L.C.—401——
262North Central Oil Corp.—401——
263Padon, Frank B. Oil Oper., Inc.—401——
264Powell-McCarroll Partnership—401——
265Realitos Energy Corp.—401——
266Scoggins Oil & Gas Co.—401——
267Southwest Oil & Land, Inc.—401——
268Black Jack Resources, Inc.—301——
269Clay Petroleum, Inc.—301——
270Golden-Abercrombie-Birdwell—301——
271Howell Drilling, Inc.—301——
272H & S Production, Inc.—301——
273Ladd Petroleum Corp.—301——
274Meridian Oil Production Inc.—301——
275Newton Oil & Gas Corporation—301——
276Parker & Parsley Producing L.P.—301——
277Phillips, A. O., Estate OF—301——
278Reb Petroleum Company—301——
279Sun Expl. & Prod. Co.-Corpus—301——
280Sunray Operating Company LLC—301——
281Tartan Oil & Gas—301——
282Voight, John G.—301——
283American Exploration Company—201——
284Amoco Production Company—201——
285Ashland Exploration, Inc.—201——
286Bay Rock Corp.—201——
287B & M Operating Co., Inc.—201——
288BNP Petroleum Corporation—201——
289Carl, W. E.—201——
290Champlin Petroleum Co.—201——
291Convest Energy Corporation—201——
292Copano Processing, L.P.—201——
293Daniels Corporation, The—201——
294Denovo Oil & Gas, Inc.—201——
295Encana Oil & Gas(usa) Inc.—201——
296Famcor Oil, Inc—201——
297High Plains Gas Systems, Inc.—201——
298J.R. Oil and Gas Inc.—201——
299Kerr-McGee Corporation—201——
300Leger Production Co., Inc.—201——

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