| 1 | C & B Production | Ben Bolt, TX 78342 | Oil & Gas Operator | Mar 2025 |
| 2 | C & C Petroleum Management, LLC | Abilene, TX 79601 | Oil & Gas Operator | Mar 2025 |
| 3 | C & G Transports, Inc. | Woodson, TX 76491 | Oil & Gas Operator | Mar 2025 |
| 4 | C S J, Inc. | Austin, TX 78716 | Oil & Gas Operator | Mar 2025 |
| 5 | Cabana Oil Corp. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2006 |
| 6 | Cal-Tex Operating Co. | Manchaca, TX 78652 | Oil & Gas Operator | May 2020 |
| 7 | Campbell, T. K. | Fort Worth, TX 76118 | Oil & Gas Operator | Mar 2006 |
| 8 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Mar 2025 |
| 9 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | Mar 2025 |
| 10 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Mar 2025 |
| 11 | Cegx Of Texas LLC | Eastland, TX 76448 | Oil Operator | Mar 2018 |
| 12 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 13 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Mar 2025 |
| 14 | Central Energy Producing Company | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2003 |
| 15 | Chalmers Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 1997 |
| 16 | Chambers, R. H. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2006 |
| 17 | Chambers, R. H. LLC | Abilene, TX 79606 | Oil & Gas Operator | Mar 2025 |
| 18 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2024 |
| 19 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2025 |
| 20 | Chisholm Exploration | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 21 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 22 | Clavo Oil, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 23 | Clear Fork Gas Company | Albany, TX 76430 | Oil & Gas Operator | Mar 2025 |
| 24 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 25 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2025 |
| 26 | Cole, Frank W Engineering | Dallas, TX 75254 | Oil & Gas Operator | Mar 2006 |
| 27 | Coleman & Johnson Oil Company | Brownwood, TX 76801 | Oil & Gas Operator | Mar 2025 |
| 28 | Colt Oil & Gas Co. | Abilene, TX 79601 | Oil Operator | Apr 2004 |
| 29 | Comanche Oil And Gas Company | Brownwood, TX 76801 | Oil & Gas Operator | Mar 2025 |
| 30 | Comanche Well Service Corp. | Plano, TX 75093 | Oil & Gas Operator | Mar 2025 |
| 31 | Concho Oilfield Service, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2013 |
| 32 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Mar 2025 |
| 33 | Cooper Oil & Gas, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2025 |
| 34 | Corsicana Field Fund | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1993 |
| 35 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 36 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Mar 2025 |
| 37 | Cox, Lee Investments Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Mar 2025 |
| 38 | Coyote Oil Company | Lufkin, TX 75915 | Oil & Gas Operator | Sep 1996 |
| 39 | Crazy Horse Operating LLC | Austin, TX 78731 | Oil & Gas Operator | Mar 2025 |
| 40 | Crosspoint Energy Company | Dallas, TX 75205 | Oil & Gas Operator | Oct 2007 |
| 41 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 42 | Crude Production Company | Clyde, TX 79510 | Oil & Gas Operator | Mar 2025 |
| 43 | Crystal River Oil & Gas LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jan 2023 |
| 44 | Cuatro Oil And Gas Corporation | Abilene, TX 79603 | Oil & Gas Operator | Mar 2025 |
| 45 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2025 |
| 46 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2025 |