| 2801 | Cummins & Walker Oil Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Jan 2021 |
| 2802 | Cummins Wren Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Nov 1998 |
| 2803 | Cundiff Harold | Perkins, OK 74059-4199 | Oil & Gas Operator | Apr 2025 |
| 2804 | Cundiff Jack | Perkins, OK 74059-4198 | Oil & Gas Operator | Apr 2014 |
| 2805 | Cundiff Operating Company | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 2806 | Cunningham Crude, A General Partnership | Independence, KS 67301 | Oil Operator | Sep 2025 |
| 2807 | Cunningham Energy LLC | Charleston, WV 25302 | Oil & Gas Operator | Dec 2021 |
| 2808 | Cunningham, Melvin | Medicine Lodge, KS 67104 | Oil Operator | Jan 2013 |
| 2809 | Cur-Ric Petrol & Gas Corp | Las Vegas, NV 89120-4003 | Oil Operator | Dec 1985 |
| 2810 | Curmar Producers | Adairsville, GA 30103 | Oil Operator | Mar 2008 |
| 2811 | Curn Lisa | Steubenville, OH 43952-2535 | Oil Operator | Oct 2025 |
| 2812 | Curran Oil Co | Great Falls, MT 59401 | Gas Operator | May 2001 |
| 2813 | Currie Cattle Co. | Big Spring, TX 79720 | Oil & Gas Operator | Sep 2007 |
| 2814 | Currie, V. Monta, Jr. | | Gas Operator | Nov 1990 |
| 2815 | Curry Oil | | Oil Operator | May 2005 |
| 2816 | Curry R D Production Co | Memphis, TN 38103 | Oil & Gas Operator | Dec 1986 |
| 2817 | Curry, Gregg | Madison, KS 66860 | Oil Operator | Sep 2025 |
| 2818 | Curt Weaver Et Al | | Oil Operator | Apr 1982 |
| 2819 | Curt'S Oil Opera | | Oil Operator | Nov 1994 |
| 2820 | Curt'S Oil Operation, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Sep 2025 |
| 2821 | Curtis & Son Oil Inc | Sugar Grove, PA 16350 | Oil & Gas Operator | Dec 2025 |
| 2822 | Curtis Beard & Huston P. Ganey | | Oil Operator | Mar 1987 |
| 2823 | Curtis F. Adams | | Oil & Gas Operator | Oct 2024 |
| 2824 | Curtis Hankamer | Houston, TX 77024 | Oil & Gas Operator | Jun 1997 |
| 2825 | Curtis J Little | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 2826 | Curtis Oil Inc | Duke Center, PA 16729-0287 | Oil & Gas Operator | Dec 2025 |
| 2827 | Curzac Oil And Gas, LLC | Texarkana, TX 75503 | Oil & Gas Operator | Feb 2026 |
| 2828 | Curzon Operating Company LTD | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Nov 2025 |
| 2829 | Cusack, Michael F. | Austin, TX 78768 | Gas Operator | Jun 2011 |
| 2830 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 2831 | Custer K. Primos | | Oil & Gas Operator | Oct 2002 |
| 2832 | Custom Oil Explo | | Oil & Gas Operator | May 1992 |
| 2833 | Custom Service LLC | St John, KS 67576 | Oil Operator | Sep 2025 |
| 2834 | Cut Through Hydrocarbon | Florence, KY 41042 | Gas Operator | Dec 2019 |
| 2835 | Cutbirth Jack Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 1994 |
| 2836 | Cutbow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 2837 | Cutler Oil, LLC | Rantoul, KS 66079 | Oil Operator | Sep 2025 |
| 2838 | Cutter Exploration Inc | Oviedo, FL 32765 | Oil & Gas Operator | Dec 2024 |
| 2839 | Cutter Oil Company | West Salem, OH 44287 | Oil & Gas Operator | Dec 2018 |
| 2840 | Cutter Oil LLC | West Salem, OH 44287 | Oil & Gas Operator | Dec 2024 |
| 2841 | Cuyahoga Expl & Develop | Marietta, OH 45750 | Oil & Gas Operator | Dec 1986 |
| 2842 | Cuyahoga Expl. & Devel. Corp. | Jericho, NY 11753 | Oil & Gas Operator | Dec 1996 |
| 2843 | CVR Supply & Trading, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2024 |
| 2844 | CVS Operating, LLC. | Plano, TX 75074 | Oil & Gas Operator | Feb 2026 |
| 2845 | CVS Production, LLC. | Plano, TX 75074 | Oil Operator | Feb 2026 |
| 2846 | CW Dalcan Management SVCS, LTD. | Frisco, TX 75033 | Oil Operator | Feb 2026 |
| 2847 | CW Investments | Okmulgee, OK 74447-4026 | Oil & Gas Operator | Nov 2025 |
| 2848 | CWB Energy Inc | Oklahoma City, OK 73139-8837 | Oil Operator | May 2000 |
| 2849 | CWB Oil Company, LLC | St. Francis, KS 67756 | Oil Operator | Sep 2025 |
| 2850 | CWC Oil & Gas, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 2851 | CWC Petro LLC | | Gas Operator | Dec 2024 |
| 2852 | CWD Resources, LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 2853 | CWF Associates, LTD. | | Oil & Gas Operator | Apr 1988 |
| 2854 | CWF Energy, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1997 |
| 2855 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Feb 2026 |
| 2856 | CWJ Operating Co., Inc. | | Oil & Gas Operator | Sep 2001 |
| 2857 | Cwo Energy, LLC | Midland, TX 79705 | Oil Operator | Feb 2026 |
| 2858 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2026 |
| 2859 | CWS Aceite Operating, Inc. | Cotulla, TX 78014 | Oil & Gas Operator | Aug 2018 |
| 2860 | CX Disposals LLC | Minco, OK 73059-9472 | Oil Operator | Dec 2025 |
| 2861 | CX Operating LLC | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 2862 | CX Operating, Inc. | | Oil & Gas Operator | Oct 2023 |
| 2863 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | Feb 2026 |
| 2864 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 2865 | Cyanostar Energy Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Feb 1999 |
| 2866 | Cyber Enviro-Tech Inc | San Tan Valley, AZ 85144 | Oil & Gas Operator | Feb 2026 |
| 2867 | Cycle Oil & Gas Inc. | Katy, TX 77449 | Oil Operator | Feb 2026 |
| 2868 | Cycle Oil & Gas LTD | | Gas Operator | Sep 2025 |
| 2869 | Cyclone Exploration, Inc. | Florence, CO 81226 | Oil & Gas Operator | Feb 2026 |
| 2870 | Cyclone Petroleu | | Oil & Gas Operator | Nov 1995 |
| 2871 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Sep 2025 |
| 2872 | Cyclone Resources Inc | Newark, OH 43058 | Oil & Gas Operator | Dec 1990 |
| 2873 | Cyclops Corp | Pittsburgh, PA 15228 | Oil & Gas Operator | Dec 1992 |
| 2874 | Cygnus Producing Corporation | | Oil & Gas Operator | Feb 1990 |
| 2875 | Cymraec Resources, Inc. | Houston, TX 77060 | Gas Operator | Sep 2007 |
| 2876 | Cymri Corporation, The | Houston, TX 77057 | Oil & Gas Operator | Mar 2008 |
| 2877 | Cymri, L.L.C. | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 2878 | Cynpat Oil & Gas, Inc. | Sulphur SPGS, TX 75482 | Oil Operator | Nov 2018 |
| 2879 | Cypert Oil & Gas Co Inc | Broken Arrow, OK 74012-8262 | Oil & Gas Operator | Nov 1998 |
| 2880 | Cypress Creek Production Company | Magnolia, AR 71753 | Oil Operator | Jan 2025 |
| 2881 | Cypress E & P Corporation | Leander, TX 78646 | Oil & Gas Operator | Sep 2016 |
| 2882 | Cypress Energy Development Co | Cypress, TX 77429 | Oil & Gas Operator | Jun 1999 |
| 2883 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Nov 2025 |
| 2884 | Cypress Gas Pipeline Company | | Oil Operator | Dec 1998 |
| 2885 | Cypress Gas Pipeline, LLC | | Oil Operator | Sep 2019 |
| 2886 | Cypress Oil Company, Inc. | | Oil & Gas Operator | Aug 2003 |
| 2887 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 2888 | Cypress Partners, Inc. | Houston, TX 77068 | Oil & Gas Operator | May 1999 |
| 2889 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Feb 2026 |
| 2890 | Cypress Resources | | Oil & Gas Operator | Jul 2004 |
| 2891 | Cyrus, Scott | Louisa, KY 41230 | Oil Operator | Dec 2023 |
| 2892 | Cyrus, Wade T | Fort Gay, WV 25574 | Oil & Gas Operator | Dec 2013 |
| 2893 | Cytex South Texas Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 2894 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |
| 2895 | Czarniak, Dennis G. | Holland, NY 14080 | Gas Operator | Dec 2024 |
| 2896 | Czerniak, Michael A. And Cheryl A. | Lakewood, NY 14750 | Gas Operator | Dec 2024 |
| 2897 | Czesak Dairy Farm, LLC | Chaffee, NY 14030 | Gas Operator | Dec 2024 |
| 2898 | Czworka, Terry D. | Le Roy, NY 14482 | Gas Operator | Dec 2024 |