| 1 | Callaway Production Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 2 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 3 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Apr 2024 |
| 4 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 5 | Caprock Exploration, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Feb 2024 |
| 6 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 7 | Capstone Natural Res II, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 8 | Capstone Natural Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2015 |
| 9 | Capturepoint LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2024 |
| 10 | Cardwell Oil Corporation | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 11 | Carruth Oil & Gas, LLC | Andrews, TX 79714 | Oil & Gas Operator | Apr 2024 |
| 12 | Carruth, Chris | Andrews, TX 79714 | Oil & Gas Operator | Nov 2017 |
| 13 | Cass Energy Corp | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 14 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 15 | Centerfire Resources | Springerville, AZ 85938 | Oil & Gas Operator | Apr 2024 |
| 16 | Centurion Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2009 |
| 17 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 18 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2024 |
| 19 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
| 20 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2023 |
| 21 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 22 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 23 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 24 | Cholla Petroleum, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 25 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 26 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 27 | Circle-S Energy, LLC | McKinney, TX 75071 | Oil & Gas Operator | Apr 2024 |
| 28 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Apr 2024 |
| 29 | Clearfork Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2011 |
| 30 | Clearfork Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2018 |
| 31 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | Apr 2024 |
| 32 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 33 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 34 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 35 | Coates Energy Interests, LTD. | San Antonio, TX 78217 | Oil & Gas Operator | Aug 1997 |
| 36 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 37 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 38 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 39 | Colgate Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2024 |
| 40 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 41 | Colt Oil Company | Andrews, TX 79714 | Oil & Gas Operator | Feb 1996 |
| 42 | Comal Operating LLC | New Braunfels, TX 78130 | Gas Operator | Apr 2024 |
| 43 | Compostella Oil Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 44 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Apr 2024 |
| 45 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 46 | Concord Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2021 |
| 47 | Cone & Petree Oil & Gas Exp. Inc | Lubbock, TX 79453 | Oil & Gas Operator | Apr 2024 |
| 48 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 49 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 50 | Conquest Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2024 |
| 51 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 52 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
| 53 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 54 | Cooper Oil & Gas, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 55 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Apr 2023 |
| 56 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Apr 2024 |
| 57 | Corona Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 58 | Corona Operating, LLC | Midland, TX 79702 | Oil Operator | Apr 2024 |
| 59 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Apr 2024 |
| 60 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 61 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 62 | Cotton Valley Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2000 |
| 63 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 64 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 65 | Crestridge DRLG. & Prod.Co.,LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 66 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 67 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 68 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Apr 2024 |
| 69 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 70 | Crusader Energy II LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 71 | CTL Oil & Gas Corporation | Buchanan Dam, TX 78609 | Oil & Gas Operator | Nov 2020 |
| 72 | Cuervo, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | Apr 2024 |
| 73 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 74 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2024 |