| 1 | C & F Energy, Co. | Oil City, LA 71061 | Oil & Gas Operator | Dec 1996 |
| 2 | C. W. Resources, Inc. | Longview, TX 75604 | Oil & Gas Operator | Oct 2025 |
| 3 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Sep 2026 |
| 4 | Card Operating Company, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Dec 1995 |
| 5 | Carr Resources, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2026 |
| 6 | Caruthers Producing Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2019 |
| 7 | Cavilla Energy, Inc. | Longview, TX 75606 | Oil Operator | Sep 2026 |
| 8 | Ceja Corporation | Tulsa, OK 74172 | Oil & Gas Operator | May 2026 |
| 9 | Chalker Energy Management II,LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 10 | Chalker Energy Management,LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2006 |
| 11 | Chambers Exploration Inc. | Austin, TX 78711 | Oil & Gas Operator | Dec 1986 |
| 12 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Sep 2026 |
| 13 | Chaparral Operating, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Sep 2026 |
| 14 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2026 |
| 15 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 16 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 17 | Cody Energy LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2020 |
| 18 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jul 2026 |
| 19 | Cody Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2002 |
| 20 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 21 | Cook Exploration Co. | Longview, TX 75602 | Oil & Gas Operator | Sep 2026 |
| 22 | Corsa Resources, LLC | Kemah, TX 77565 | Oil & Gas Operator | Sep 2026 |
| 23 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 24 | CP Energy, LLC | Edmond, OK 73034 | Oil Operator | Jul 2025 |
| 25 | Crescent Pass Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | May 2026 |
| 26 | Crow, David | Shreveport, LA 71106 | Oil & Gas Operator | May 2001 |
| 27 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2026 |