| 1 | Cago, Inc. | College Sta, TX 77845 | Oil & Gas Operator | May 2024 |
| 2 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
| 3 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
| 4 | Carburante Exploration Co, LTD. | Granbury, TX 76048 | Oil & Gas Operator | May 2024 |
| 5 | Caribbean Energy, L.L.C. | Cotulla, TX 78014 | Oil & Gas Operator | Nov 2019 |
| 6 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 7 | Cary Oil & Gas, Inc | Decatur, TX 76234 | Oil & Gas Operator | May 2024 |
| 8 | Caswell Bros. Oil Co. | Bowie, TX 76230 | Oil & Gas Operator | May 2024 |
| 9 | Cavilla Energy, Inc. | Longview, TX 75606 | Oil Operator | May 2024 |
| 10 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | May 2024 |
| 11 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | May 2024 |
| 12 | Centurion Oil & Gas Op. Co. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 1998 |
| 13 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Feb 2024 |
| 14 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 15 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2024 |
| 16 | Charis Oil & Gas, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2024 |
| 17 | Chico Production Corp. | Bowie, TX 76230 | Oil & Gas Operator | May 2024 |
| 18 | Cholla Petroleum, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2024 |
| 19 | Cico Oil & Gas Company | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 20 | Circle B Oil & Gas | Bowie, TX 76230 | Oil & Gas Operator | Dec 2021 |
| 21 | Clear Brooke Ranches, LLC | Fort Worth, TX 76179 | Oil & Gas Operator | May 2024 |
| 22 | Clearfork Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2011 |
| 23 | Clearfork Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2018 |
| 24 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 25 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2024 |
| 26 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | Feb 2024 |
| 27 | Cody Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2002 |
| 28 | Coleman Oil & Gas Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | May 2024 |
| 29 | Cone, Charles M. Services, Inc. | Dallas, TX 75372 | Oil & Gas Operator | Sep 2005 |
| 30 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 31 | Continental Exploration LLC | Lufkin, TX 75915 | Oil & Gas Operator | May 2024 |
| 32 | Continental Export Corporation | Bowie, TX 76230 | Oil & Gas Operator | Sep 2013 |
| 33 | Cooke & Montague Oper. Co., Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2024 |
| 34 | Cope Oil Company | Valley VIew, TX 76272 | Oil & Gas Operator | Feb 2015 |
| 35 | Coral E&P, LLC | Adkins, TX 78101 | Oil & Gas Operator | May 2024 |
| 36 | Corda Corporation | Wichita Falls, TX 76302 | Oil & Gas Operator | May 2024 |
| 37 | Coreterra Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | May 2024 |
| 38 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 39 | Cotton Valley Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 40 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 41 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 42 | Cox Resources Corporation | Dallas, TX 75244 | Oil & Gas Operator | Mar 2015 |
| 43 | CP Energy LLC | Edmond, OK 73034 | Oil Operator | Feb 2024 |
| 44 | CR Reed Production, Inc. | Gainesville, TX 76241 | Oil Operator | May 2024 |
| 45 | Creed Operating Co., LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2024 |
| 46 | Crest Operating Company | Houston, TX 77042 | Oil & Gas Operator | May 2024 |
| 47 | Crusader Energy Group Inc. | Austin, TX 78746 | Oil & Gas Operator | Mar 2015 |
| 48 | Crusader Energy Group LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2015 |
| 49 | CTL Production, Inc. | Muenster, TX 76252 | Oil & Gas Operator | May 2024 |
| 50 | Cuervo, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | May 2024 |