| 6901 | Curtis J Little | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 6902 | Curtis Oil Inc | Duke Center, PA 16729-0287 | Oil & Gas Operator | Dec 2025 |
| 6903 | Curzac Oil And Gas, LLC | Texarkana, TX 75503 | Oil & Gas Operator | Jun 2026 |
| 6904 | Curzon Operating Company LTD | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Mar 2026 |
| 6905 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 6906 | Custer K. Primos | | Oil & Gas Operator | Oct 2002 |
| 6907 | Cut Through Hydrocarbon | Florence, KY 41042 | Gas Operator | Dec 2024 |
| 6908 | Cutbow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2026 |
| 6909 | Cutler Oil, LLC | Rantoul, KS 66079 | Oil Operator | Dec 2025 |
| 6910 | Cutter Exploration Inc | Oviedo, FL 32765 | Oil & Gas Operator | Dec 2024 |
| 6911 | Cutter Oil Company | West Salem, OH 44287 | Oil & Gas Operator | Dec 2018 |
| 6912 | Cutter Oil LLC | West Salem, OH 44287 | Oil & Gas Operator | Dec 2025 |
| 6913 | Cuyahoga Expl & Develop | Marietta, OH 45750 | Oil & Gas Operator | Dec 1986 |
| 6914 | Cuyahoga Expl. & Devel. Corp. | Jericho, NY 11753 | Oil & Gas Operator | Dec 1996 |
| 6915 | CVR Supply & Trading, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2024 |
| 6916 | CVS Operating, LLC. | Plano, TX 75074 | Oil & Gas Operator | Jun 2026 |
| 6917 | CVS Production, LLC. | Plano, TX 75074 | Oil Operator | Jun 2026 |
| 6918 | CW Dalcan Management SVCS, LTD. | Frisco, TX 75033 | Oil Operator | Jun 2026 |
| 6919 | CW Investments | Okmulgee, OK 74447-4026 | Oil & Gas Operator | Nov 2025 |
| 6920 | CWB Energy Inc | Oklahoma City, OK 73139-8837 | Oil Operator | May 2000 |
| 6921 | CWB Oil Company, LLC | St. Francis, KS 67756 | Oil Operator | Feb 2026 |
| 6922 | CWC Oil & Gas, LLC | Abilene, TX 79608 | Oil & Gas Operator | Jun 2026 |
| 6923 | CWC Petro LLC | | Gas Operator | Dec 2024 |
| 6924 | CWD Resources, LLC | Kilgore, TX 75663 | Oil Operator | Jun 2026 |
| 6925 | CWF Associates, LTD. | | Oil & Gas Operator | Apr 1988 |
| 6926 | CWF Energy, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1997 |
| 6927 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Jun 2026 |
| 6928 | CWJ Operating Co., Inc. | | Oil & Gas Operator | Sep 2001 |
| 6929 | Cwo Energy, LLC | Midland, TX 79705 | Oil Operator | Jun 2026 |
| 6930 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Jun 2026 |
| 6931 | CWS Aceite Operating, Inc. | Cotulla, TX 78014 | Oil & Gas Operator | Aug 2018 |
| 6932 | CX Disposals LLC | Minco, OK 73059-9472 | Oil Operator | Apr 2026 |
| 6933 | CX Operating LLC | Dallas, TX 75238 | Oil & Gas Operator | Jun 2026 |
| 6934 | CX Operating, Inc. | | Oil & Gas Operator | Oct 2023 |
| 6935 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | Jun 2026 |
| 6936 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 6937 | Cyanostar Energy Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Feb 1999 |
| 6938 | Cyber Enviro-Tech Inc | San Tan Valley, AZ 85144 | Oil & Gas Operator | Jun 2026 |
| 6939 | Cycle Oil & Gas Inc. | Katy, TX 77449 | Oil Operator | Jun 2026 |
| 6940 | Cycle Oil & Gas LTD | | Gas Operator | Feb 2026 |
| 6941 | Cyclone Exploration, Inc. | Florence, CO 81226 | Oil & Gas Operator | Jun 2026 |
| 6942 | Cyclone Petroleu | | Oil & Gas Operator | Nov 1995 |
| 6943 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Jan 2026 |
| 6944 | Cyclops Corp | Pittsburgh, PA 15228 | Oil & Gas Operator | Dec 1992 |
| 6945 | Cygnus Producing Corporation | | Oil & Gas Operator | Feb 1990 |
| 6946 | Cymri Corporation, The | Houston, TX 77057 | Oil & Gas Operator | Mar 2008 |
| 6947 | Cymri, L.L.C. | Houston, TX 77042 | Oil & Gas Operator | Jun 2026 |
| 6948 | Cynpat Oil & Gas, Inc. | Sulphur SPGS, TX 75482 | Oil Operator | Nov 2018 |
| 6949 | Cypress Creek Production Company | Magnolia, AR 71753 | Oil Operator | Jan 2025 |
| 6950 | Cypress E & P Corporation | Leander, TX 78646 | Oil & Gas Operator | Sep 2016 |
| 6951 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Feb 2026 |
| 6952 | Cypress Gas Pipeline Company | | Oil Operator | Dec 1998 |
| 6953 | Cypress Gas Pipeline, LLC | | Oil Operator | Sep 2019 |
| 6954 | Cypress Oil Company, Inc. | | Oil & Gas Operator | Aug 2003 |
| 6955 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2026 |
| 6956 | Cypress Partners, Inc. | Houston, TX 77068 | Oil & Gas Operator | May 1999 |
| 6957 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Jun 2026 |
| 6958 | Cypress Resources | | Oil & Gas Operator | Jul 2004 |
| 6959 | Cyrus, Wade T | Fort Gay, WV 25574 | Oil & Gas Operator | Dec 2013 |
| 6960 | Cytex South Texas Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Jun 2026 |
| 6961 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |
| 6962 | Czarniak, Dennis G. | Holland, NY 14080 | Gas Operator | Dec 2024 |
| 6963 | Czerniak, Michael A. And Cheryl A. | Lakewood, NY 14750 | Gas Operator | Dec 2024 |
| 6964 | Czesak Dairy Farm, LLC | Chaffee, NY 14030 | Gas Operator | Dec 2024 |
| 6965 | Czworka, Terry D. | Le Roy, NY 14482 | Gas Operator | Dec 2024 |
| 6966 | D & A Oil Company | Abilene, TX 79606 | Oil & Gas Operator | Oct 2018 |
| 6967 | D & A Oil Company, A General Partnership | Clearwater, KS 67026 | Oil Operator | Nov 2025 |
| 6968 | D & B Energy Corporation | San Antonio, TX 78264 | Oil Operator | Jun 2026 |
| 6969 | D & B Gas Co. | Burden, KS 67019 | Gas Operator | Feb 2001 |
| 6970 | D & B Gas Prod LLC | Kittanning, PA 16201-7123 | Oil & Gas Operator | Dec 2025 |
| 6971 | D & B Johnson Family LLC | Owasso, OK 74055-7578 | Oil Operator | Apr 2025 |
| 6972 | D & B Oil Company | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 6973 | D & B Operating LLC | Ringwood, OK 73768 | Oil Operator | Jan 2023 |
| 6974 | D & B Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2003 |
| 6975 | D & C Operating, Inc. | | Oil & Gas Operator | Apr 1999 |
| 6976 | D & D Drilling | Kingston, OK 73439-9549 | Oil & Gas Operator | May 2000 |
| 6977 | D & D DRLG Co & Saye Oil Co | | Oil Operator | Apr 1982 |
| 6978 | D & D Energy | | Oil Operator | Jul 2023 |
| 6979 | D & D Energy Inc | Sapulpa, OK 74066-8734 | Oil & Gas Operator | May 2013 |
| 6980 | D & D Enterprises | Post, TX 79356 | Oil & Gas Operator | Jun 2026 |
| 6981 | D & D Expl Co-Mba Energy | | Oil Operator | Nov 1985 |
| 6982 | D & D Exploration Co. | | Oil & Gas Operator | Nov 1986 |
| 6983 | D & D Exploration Co. Et Al | | Oil Operator | Feb 1988 |
| 6984 | D & D Oil & Gas LLC | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2025 |
| 6985 | D & D Oil Co. #2 | Post, TX 79356 | Oil & Gas Operator | Jun 2026 |
| 6986 | D & D Oil Company | Dayton, TX 77535 | Oil & Gas Operator | Jun 2026 |
| 6987 | D & D Pipe & Equipment Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2005 |
| 6988 | D & D Services | Cement, OK 73017-9712 | Oil Operator | Feb 2017 |
| 6989 | D & D Well Service, L.L.C. | Post, TX 79356 | Oil Operator | Jun 2026 |
| 6990 | D & E Oil Co. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2026 |
| 6991 | D & F Oil Company | Dewey, OK 74029 | Oil & Gas Operator | Apr 2001 |
| 6992 | D & F Petroleum | | Oil & Gas Operator | Sep 1990 |
| 6993 | D & G Company | Iraan, TX 79744 | Oil Operator | Apr 2006 |
| 6994 | D & G Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 1995 |
| 6995 | D & G Natural Resources Inc | Somerset, KY 42502 | Oil & Gas Operator | Dec 2024 |
| 6996 | D & G Oil & Gas Company Inc | Enid, OK 73702-2027 | Oil & Gas Operator | Nov 2021 |
| 6997 | D & G Oil Compan | | Oil Operator | Mar 1988 |
| 6998 | D & G Operating Company, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jun 2026 |
| 6999 | D & H Energy, LLC | Shelby, MT 59474 | Oil & Gas Operator | Mar 2026 |
| 7000 | D & H Investments | Jacksboro, TX 76458 | Oil & Gas Operator | Jun 2026 |