| 7101 | Cur-Ric Petrol & Gas Corp | Las Vegas, NV 89120-4003-4003 | Oil Operator | Dec 1985 |
| 7102 | Curmar Producers | Adairsville, GA 30103 | Oil Operator | Mar 2008 |
| 7103 | Curn Lisa | Steubenville, OH 43952-2535 | Oil Operator | Feb 2025 |
| 7104 | Curran Oil Co | Great Falls, MT 59401 | Gas Operator | May 2001 |
| 7105 | Currie Cattle Co. | Big Spring, TX 79720 | Oil & Gas Operator | Sep 2007 |
| 7106 | Currie, V. Monta, Jr. | | Gas Operator | Nov 1990 |
| 7107 | Curry Oil | | Oil Operator | May 2005 |
| 7108 | Curry R D Production Co | Memphis, TN 38103 | Oil & Gas Operator | Dec 1986 |
| 7109 | Curry, Gregg | Madison, KS 66860 | Oil Operator | Jan 2025 |
| 7110 | Curt Weaver Et Al | | Oil Operator | Apr 1982 |
| 7111 | Curt'S Oil Opera | | Oil Operator | Nov 1994 |
| 7112 | Curt'S Oil Operation, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jan 2025 |
| 7113 | Curtis & Son Oil Inc | Sugar Grove, PA 16350 | Oil & Gas Operator | Dec 2024 |
| 7114 | Curtis Beard & Huston P. Ganey | | Oil Operator | Mar 1987 |
| 7115 | Curtis F. Adams | | Oil & Gas Operator | Oct 2024 |
| 7116 | Curtis Hankamer | Houston, TX 77024 | Oil & Gas Operator | Jun 1997 |
| 7117 | Curtis J Little | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 7118 | Curtis Oil Inc | Duke Center, PA 16729-0287 | Oil & Gas Operator | Dec 2024 |
| 7119 | Curton Capital Corp | | Oil Operator | Sep 2015 |
| 7120 | Curzac Oil And Gas, LLC | Plano, TX 75075 | Oil & Gas Operator | May 2025 |
| 7121 | Curzon Operating Company LTD | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Feb 2025 |
| 7122 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 7123 | Custer K. Primos | | Oil & Gas Operator | Oct 2002 |
| 7124 | Custom Oil Explo | | Oil & Gas Operator | May 1992 |
| 7125 | Cut Bank Gas Company | Cut Bank, MT 59427 | Gas Operator | Mar 2025 |
| 7126 | Cut Through Hydrocarbon | Florence, KY 41042 | Gas Operator | Dec 2019 |
| 7127 | Cutbow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 7128 | Cutler Oil, LLC | Rantoul, KS 66079 | Oil Operator | Nov 2024 |
| 7129 | Cutter Exploration Inc | Oviedo, FL 32765-0476-0476 | Oil & Gas Operator | Dec 2024 |
| 7130 | Cutter Oil Company | West Salem, OH 44287 | Oil & Gas Operator | Dec 2018 |
| 7131 | Cutter Oil LLC | West Salem, OH 44287 | Oil & Gas Operator | Dec 2024 |
| 7132 | Cuyahoga Expl & Develop | Marietta, OH 45750 | Oil & Gas Operator | Dec 1986 |
| 7133 | Cuyahoga Expl. & Devel. Corp. | Jericho, NY 11753 | Oil & Gas Operator | Dec 1996 |
| 7134 | CVR Supply & Trading, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2024 |
| 7135 | CVS Operating, LLC. | Plano, TX 75074 | Oil & Gas Operator | May 2025 |
| 7136 | CVS Production, LLC. | Plano, TX 75074 | Oil Operator | May 2025 |
| 7137 | CW Dalcan Management SVCS, LTD. | Frisco, TX 75033 | Oil Operator | May 2025 |
| 7138 | CW Investments | Okmulgee, OK 74447-4026 | Oil & Gas Operator | Feb 2025 |
| 7139 | CWB Energy Inc | Oklahoma City, OK 73139-8837 | Oil Operator | May 2000 |
| 7140 | CWB Oil Company, LLC | St. Francis, KS 67756 | Oil Operator | Jan 2025 |
| 7141 | CWC Oil & Gas, LLC | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 7142 | CWC Petro LLC | | Gas Operator | Dec 2024 |
| 7143 | CWD Resources, LLC | Kilgore, TX 75663 | Oil Operator | May 2025 |
| 7144 | CWF Associates, LTD. | | Oil & Gas Operator | Apr 1988 |
| 7145 | CWF Energy, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1997 |
| 7146 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | May 2025 |
| 7147 | CWJ Operating Co., Inc. | | Oil & Gas Operator | Sep 2001 |
| 7148 | Cwo Energy, LLC | Midland, TX 79705 | Oil Operator | May 2025 |
| 7149 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | May 2025 |
| 7150 | CWS Aceite Operating, Inc. | Cotulla, TX 78014 | Oil & Gas Operator | Aug 2018 |
| 7151 | CWT Operating, LLC | McKinney, TX 75072 | Oil & Gas Operator | Mar 2025 |
| 7152 | CX Disposals LLC | Minco, OK 73059-9472 | Oil Operator | Mar 2025 |
| 7153 | CX Operating LLC | Dallas, TX 75238 | Oil & Gas Operator | May 2025 |
| 7154 | CX Operating, Inc. | | Oil & Gas Operator | Oct 2023 |
| 7155 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | May 2025 |
| 7156 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 7157 | Cyanostar Energy, Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Sep 2001 |
| 7158 | Cyber Enviro-Tech Inc | | Oil & Gas Operator | May 2025 |
| 7159 | Cycle Oil & Gas Inc. | Katy, TX 77449 | Oil Operator | May 2025 |
| 7160 | Cycle Oil & Gas LTD | | Gas Operator | Dec 2024 |
| 7161 | Cyclone Exploration, Inc. | Florence, CO 81226 | Oil & Gas Operator | May 2025 |
| 7162 | Cyclone Petroleu | | Oil & Gas Operator | Nov 1995 |
| 7163 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Jan 2025 |
| 7164 | Cyclops Corp | Pittsburgh, PA 15228 | Oil & Gas Operator | Dec 1992 |
| 7165 | Cygnus Producing Corporation | | Oil & Gas Operator | Feb 1990 |
| 7166 | Cymri Corporation, The | Houston, TX 77057 | Oil & Gas Operator | Mar 2008 |
| 7167 | Cymri, L.L.C. | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 7168 | Cynpat Oil & Gas, Inc. | Sulphur SPGS, TX 75482 | Oil Operator | Nov 2018 |
| 7169 | Cypress Creek Production Company | Magnolia, AR 71753 | Oil Operator | Jan 2025 |
| 7170 | Cypress E & P Corporation | Leander, TX 78646 | Oil & Gas Operator | Sep 2016 |
| 7171 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Feb 2025 |
| 7172 | Cypress Gas Pipeline Company | | Oil Operator | Dec 1998 |
| 7173 | Cypress Gas Pipeline, LLC | | Oil Operator | Sep 2019 |
| 7174 | Cypress Oil Company, Inc. | | Oil & Gas Operator | Aug 2003 |
| 7175 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2025 |
| 7176 | Cypress Partners, Inc. | Houston, TX 77068 | Oil & Gas Operator | May 1999 |
| 7177 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | May 2025 |
| 7178 | Cypress Resources | | Oil & Gas Operator | Jul 2004 |
| 7179 | Cyrus, Scott | Louisa, KY 41230 | Oil Operator | Dec 2023 |
| 7180 | Cyrus, Wade T | Fort Gay, WV 25574 | Oil & Gas Operator | Dec 2013 |
| 7181 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |
| 7182 | Czarniak, Dennis G. | Holland, NY 14080 | Gas Operator | Dec 2023 |
| 7183 | Czerniak, Michael A. And Cheryl A. | Lakewood, NY 14750 | Gas Operator | Dec 2023 |
| 7184 | Czesak Dairy Farm, LLC | Chaffee, NY 14030 | Gas Operator | Dec 2023 |
| 7185 | Czworka, Terry D. | Le Roy, NY 14482 | Gas Operator | Dec 2023 |
| 7186 | D & A Oil Company | Abilene, TX 79606 | Oil & Gas Operator | Oct 2018 |
| 7187 | D & A Oil Company, A General Partnership | Clearwater, KS 67026 | Oil Operator | Dec 2024 |
| 7188 | D & B Energy Corporation | San Antonio, TX 78264 | Oil Operator | May 2025 |
| 7189 | D & B Farm LLC | Wayne, NJ 07470 | Gas Operator | Dec 2023 |
| 7190 | D & B Gas Co. | Burden, KS 67019 | Gas Operator | Feb 2001 |
| 7191 | D & B Gas Prod LLC | Kittanning, PA 16201-7123 | Oil & Gas Operator | Dec 2024 |
| 7192 | D & B Johnson Family LLC | Owasso, OK 74055-7578 | Oil Operator | Dec 2024 |
| 7193 | D & B Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 7194 | D & B Operating LLC | Ringwood, OK 73768 | Oil Operator | Jan 2023 |
| 7195 | D & B Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2003 |
| 7196 | D & C Operating, Inc. | | Oil & Gas Operator | Apr 1999 |
| 7197 | D & D Drilling | Kingston, OK 73439-9549 | Oil & Gas Operator | May 2000 |
| 7198 | D & D DRLG Co & Saye Oil Co | | Oil Operator | Apr 1982 |
| 7199 | D & D Energy | | Oil Operator | Jul 2023 |
| 7200 | D & D Energy Company | North Canton, OH 44721 | Oil & Gas Operator | Dec 2020 |