| 1 | C & C Petroleum Management, LLC | Abilene, TX 79601 | Oil & Gas Operator | Oct 2025 |
| 2 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 3 | Can-Tex Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Nov 2003 |
| 4 | Capco Resources Of Texas, Inc | Irving, TX 75063 | Oil & Gas Operator | Jun 2003 |
| 5 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Oct 2025 |
| 6 | Cascade Petroleum Corporation | Quitman, TX 75783 | Oil & Gas Operator | Mar 2002 |
| 7 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 8 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 9 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 10 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 11 | Central Basin Oil Inv. Inc. | Southlake, TX 76092 | Oil & Gas Operator | Oct 2025 |
| 12 | Centurion Operating Corporation | Rockwall, TX 75087 | Oil & Gas Operator | Oct 2025 |
| 13 | Chalmers Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 1997 |
| 14 | Chan West Oil Corporation | Irving, TX 75016 | Oil & Gas Operator | Oct 2025 |
| 15 | Charter Petroleum Company | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 16 | Chase Operating Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2016 |
| 17 | Chisholm Exploration | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 18 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Oct 2025 |
| 19 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 20 | Christian Energy, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Mar 2008 |
| 21 | Cinnabar Energy, LTD. | Fort Worth, TX 76107 | Oil & Gas Operator | May 2018 |
| 22 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 23 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 24 | Co Energy | Benbrook, TX 76126 | Oil & Gas Operator | Oct 2025 |
| 25 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Oct 2025 |
| 26 | Colo Construction Co., Inc. | Abilene, TX 79602 | Oil Operator | Apr 2004 |
| 27 | Colo Exploration Company, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Oct 2025 |
| 28 | Colt Oil & Gas Co. | Abilene, TX 79601 | Oil Operator | Apr 2004 |
| 29 | Concho Oilfield Service, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2013 |
| 30 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 31 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Oct 2025 |
| 32 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 33 | Coral E&P, LLC | Adkins, TX 78101 | Oil & Gas Operator | Oct 2025 |
| 34 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 35 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 36 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Oct 2025 |
| 37 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 38 | Crego Exploration | Dallas, TX 75243 | Oil & Gas Operator | Oct 2025 |
| 39 | Cremson Oil & Gas | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 40 | Croker, Danny | Wichita Falls, TX 76302 | Oil & Gas Operator | Oct 2025 |
| 41 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 42 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 43 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 44 | Crude Production Company | Clyde, TX 79510 | Oil & Gas Operator | Oct 2025 |
| 45 | Cuatro Oil And Gas Corporation | Abilene, TX 79603 | Oil & Gas Operator | Oct 2025 |
| 46 | Cucharas Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Dec 2000 |
| 47 | Culebra Oil & Gas LLC | Kerrville, TX 78028 | Oil & Gas Operator | Oct 2025 |
| 48 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Oct 2025 |
| 49 | Cypress Partners, Inc. | Houston, TX 77068 | Oil & Gas Operator | May 1999 |