| 1 | C & A Enterprises | Ballinger, TX 76821 | Oil & Gas Operator | Apr 2025 |
| 2 | C S J, Inc. | Austin, TX 78716 | Oil & Gas Operator | Apr 2025 |
| 3 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | Apr 2025 |
| 4 | Camexco, Inc. | Houston, TX 77058 | Oil & Gas Operator | Apr 2025 |
| 5 | Cannon Operating Company LLC | Garland, TX 75043 | Oil Operator | Apr 2025 |
| 6 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2024 |
| 7 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 8 | Capio Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2015 |
| 9 | Caraway Operating Co. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2025 |
| 10 | Carr Exploration Corp. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 11 | CB Energy Partners, LLC | Odessa, TX 79765 | Oil & Gas Operator | Apr 2025 |
| 12 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 13 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Apr 2025 |
| 14 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 15 | Centex Energy, LLC | Bryan, TX 77802 | Oil & Gas Operator | Apr 2025 |
| 16 | CH4 Energy II LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Apr 2018 |
| 17 | Chambers, R. H. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2006 |
| 18 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 19 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2025 |
| 20 | Chase Operating Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2016 |
| 21 | Cheetah Investments, Inc. | Winters, TX 79567 | Oil & Gas Operator | Apr 2025 |
| 22 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 23 | China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Jun 2010 |
| 24 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Apr 2025 |
| 25 | Chisholm Exploration | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 26 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2025 |
| 27 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 28 | Cinnabar Energy, LTD. | Fort Worth, TX 76107 | Oil & Gas Operator | May 2018 |
| 29 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 30 | Clear Brooke Ranches, LLC | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 2025 |
| 31 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 32 | CLS Interests, Incorporated | Austin, TX 78734 | Oil & Gas Operator | Jan 1997 |
| 33 | Co Energy | Benbrook, TX 76126 | Oil & Gas Operator | Apr 2025 |
| 34 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 35 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 36 | Colo Exploration Company, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Apr 2025 |
| 37 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Apr 2025 |
| 38 | Cone & Petree Oil & Gas Exp. Inc | Lubbock, TX 79453 | Oil & Gas Operator | May 2024 |
| 39 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 40 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 41 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2025 |
| 42 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 43 | Cooke, Kenny D. Operating | Ballinger, TX 76821 | Oil & Gas Operator | Mar 2004 |
| 44 | Corkran Energy, LP | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 45 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 46 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 47 | Cremson Oil & Gas | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 48 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 49 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
| 50 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 51 | Crude Resources, Inc. | Carrollton, TX 75011 | Oil & Gas Operator | Mar 2008 |
| 52 | Cuatro Oil And Gas Corporation | Abilene, TX 79603 | Oil & Gas Operator | Apr 2025 |
| 53 | Cuatro Petro Corp. | Richardson, TX 75080 | Oil & Gas Operator | Apr 2025 |
| 54 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Apr 2025 |