| 1 | C & S Operating | Whiteface, TX 79379 | Oil & Gas Operator | May 2024 |
| 2 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 3 | Castex Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 4 | Cat Tree Operating, L.L.C. | Bledsoe, TX 79314 | Oil Operator | Feb 2024 |
| 5 | CCF, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Apr 1998 |
| 6 | Cfo Resources, Inc. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | May 2024 |
| 7 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 8 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Mar 2024 |
| 9 | Channa Operating, LLC | Houston, TX 77063 | Oil & Gas Operator | Jul 2021 |
| 10 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2024 |
| 11 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 12 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 13 | Cholla Petroleum, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2024 |
| 14 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 15 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 16 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 17 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 18 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 19 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 20 | Consolidated Natural Res. Corp. | Kilgore, TX 75662 | Oil & Gas Operator | Jan 2016 |
| 21 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Apr 2023 |
| 22 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 23 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 24 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 25 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2024 |
| 26 | Crossroads Energy L.P. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 27 | Crossroads Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Mar 2018 |
| 28 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | May 2024 |
| 29 | Culebra Oil & Gas, LLC | Kerrville, TX 78028 | Oil & Gas Operator | May 2024 |