| 1 | C & F Petroleum, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | May 2013 |
| 2 | C & G Petroleum, Inc. | Imperial, TX 79743 | Oil & Gas Operator | Aug 2004 |
| 3 | Cal-Mon Oil Company | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 4 | Callahan Land Company | Richardson, TX 75081 | Oil & Gas Operator | Sep 2020 |
| 5 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | May 2024 |
| 6 | Caprock Exploration, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Feb 2024 |
| 7 | Caprock Oil & Gas Inc | Andrews, TX 79714 | Gas Operator | Dec 1993 |
| 8 | Carburante Exploration Co, LTD. | Granbury, TX 76048 | Oil & Gas Operator | May 2024 |
| 9 | Cardwell Oil Corporation | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 10 | Casper Oil & Gas | Bandera, TX 78003 | Oil & Gas Operator | Oct 2002 |
| 11 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 12 | Central Crude Corp. | Wichita, KS 67206 | Oil Operator | Jan 2024 |
| 13 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 14 | Chalice Petroleum Corporation | Dallas, TX 75202 | Oil & Gas Operator | May 1998 |
| 15 | Chaney Oil Company | Andrews, TX 79714 | Oil & Gas Operator | May 2024 |
| 16 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2024 |
| 17 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 18 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 19 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 20 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | May 2024 |
| 21 | Cholla Petroleum, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2024 |
| 22 | Chuza Operating | Midland, TX 79710 | Oil & Gas Operator | Sep 2006 |
| 23 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 24 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 25 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2024 |
| 26 | CJRW Oil & Gas | MC Camey, TX 79752 | Oil Operator | May 2024 |
| 27 | Claron Corporation | Houston, TX 77219 | Oil & Gas Operator | May 2024 |
| 28 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | May 2024 |
| 29 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | May 2024 |
| 30 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 31 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2024 |
| 32 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 33 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 34 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 35 | Concord Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2021 |
| 36 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 37 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 38 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
| 39 | Cooper Oil & Gas, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 40 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Apr 2023 |
| 41 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 42 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | May 2024 |
| 43 | Coronado Minerals, LLC | Houston, TX 77208 | Oil & Gas Operator | May 2024 |
| 44 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 45 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | May 2024 |
| 46 | Costa Resources, Inc. | Dallas, TX 75209 | Oil & Gas Operator | Aug 2003 |
| 47 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 48 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 49 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 50 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 51 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |
| 52 | Cox, Robert G. & Associates,Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 1994 |
| 53 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 54 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | May 2024 |
| 55 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2024 |