1 | C & B Oil Company | Drumright, OK 74030 | Oil & Gas Operator | May 2025 |
2 | C & D Drilling Company | Hennepin, OK 73046 | Oil & Gas Operator | Mar 2007 |
3 | C & Y Casing Pulling Company | Duncan, OK 73533 | Oil & Gas Operator | May 2025 |
4 | C&D Supply | Cherokee, OK 73728-5817 | Oil & Gas Operator | Apr 2025 |
5 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
6 | Cabot Petroleum Corporation | Englewood, CO 80111-2529 | Oil & Gas Operator | Dec 2004 |
7 | Cactus Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Aug 2000 |
8 | Cactus Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2000 |
9 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
10 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
11 | Canard Colvert Operating LLC | Dallas, TX 75219-6243 | Oil & Gas Operator | May 2025 |
12 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | May 2025 |
13 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Apr 2025 |
14 | Capturepoint LLC | Allen, TX 75013 | Oil & Gas Operator | Jul 2025 |
15 | Caspen Oil, Inc. | Denver, CO 80226 | Oil & Gas Operator | Jul 1993 |
16 | Cenergy Exploration Company | Dallas, TX 75231 | Oil & Gas Operator | Sep 2000 |
17 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
18 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2025 |
19 | Centurion Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
20 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | May 2025 |
21 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
22 | Chatham John | Wilson, OK 73463-9575 | Oil Operator | Feb 2014 |
23 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2025 |
24 | Chester Oil Company | Wetumka, OK 74883-6227 | Oil & Gas Operator | Apr 2025 |
25 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
26 | Choate Kenny Dba Rebound Oil Co | Helena, OK 73741-0543 | Gas Operator | May 2025 |
27 | Chockley Energy LLC | Beaver, OK 73932 | Gas Operator | Apr 2025 |
28 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
29 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
30 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
31 | Cimarron Petroleum Corporation | Houston, TX 77057-2696 | Oil & Gas Operator | Apr 2025 |
32 | Cirrus Production Company | Enid, OK 73702 | Oil & Gas Operator | Apr 2025 |
33 | Cisco Operating LLC | Plano, TX 75024 | Oil & Gas Operator | Mar 2025 |
34 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Jul 2025 |
35 | Cities Services Company | | Oil & Gas Operator | Mar 2008 |
36 | Citrus Energy Corporation | Castle Rock, CO 80104 | Oil & Gas Operator | Mar 2020 |
37 | Claassen Oil And Gas, Inc. | Estes Park, CO 80517 | Oil & Gas Operator | Mar 2025 |
38 | Claremont Corporation | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2017 |
39 | Claremont Exploration Inc | Tulsa, OK 74103-4107 | Oil & Gas Operator | Jun 1997 |
40 | Clayton Corp Petro & Natural Gas Prod | Lakewood, CO 80228-1836 | Oil & Gas Operator | Oct 2020 |
41 | Clayton Corporation | Golden, CO 80401 | Oil & Gas Operator | Dec 2019 |
42 | Cleary Petroleum Corporation | Edmond, OK 73083 | Oil & Gas Operator | Jul 2019 |
43 | CMS Energy Inc | Dallas, TX 75287 | Oil & Gas Operator | Apr 2025 |
44 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
45 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
46 | Coastal Plains Energy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2025 |
47 | Coenergy Operating Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
48 | Colorado Interstate Gas Co | Colorado Springs, CO 80944 | Oil & Gas Operator | Jul 2004 |
49 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
50 | Columbus Energy Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
51 | Columbus Energy, LLC | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
52 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Jul 2025 |
53 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
54 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
55 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
56 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
57 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
58 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
59 | Continental Gas Inc | Enid, OK 73702-5103 | Oil & Gas Operator | Apr 2012 |
60 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
61 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Jul 2025 |
62 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
63 | Cooper Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2025 |
64 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Apr 2025 |
65 | Cordillera Energy Partners LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
66 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
67 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
68 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
69 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2025 |
70 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
71 | Cox Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
72 | Crain & Deisenroth | Tulsa, OK 74103-4433 | Oil & Gas Operator | Mar 2015 |
73 | Craw Operating LLC | Mooreland, OK 73852 | Oil & Gas Operator | Apr 2025 |
74 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2025 |
75 | Crescendo Resources, L.P. | Amarillo, TX 79188 | Oil & Gas Operator | Apr 2025 |
76 | Cross Timbers Oil Company | Dallas, TX 75284 | Oil & Gas Operator | May 2013 |
77 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
78 | Cross Timbers Production Co | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 2005 |
79 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |
80 | Crow Creek Operating Co III LLC | Tulsa, OK 74137-8432 | Oil & Gas Operator | Apr 2015 |
81 | Crown Central Pet Corp | Bellaire, TX 77401 | Oil & Gas Operator | Dec 2016 |
82 | Crusader Energy Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2011 |
83 | Crusader Energy Group Inc. | Austin, TX 78746 | Oil & Gas Operator | Mar 2015 |
84 | Crusader Energy Group LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2015 |
85 | Csoda Operating Company LLC | Amarillo, TX 79114-7506 | Oil & Gas Operator | Aug 2021 |
86 | Cudd Operating Corp. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2020 |
87 | Cummings Oil Company | Oklahoma City, OK 73112-6113 | Oil & Gas Operator | May 2025 |
88 | Curran Oil Co | Great Falls, MT 59401 | Gas Operator | May 2001 |