| 2801 | CWJ Operating Co., Inc. | | Oil & Gas Operator | Sep 2001 |
| 2802 | Cwo Energy, LLC | Midland, TX 79705 | Oil Operator | Dec 2024 |
| 2803 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2024 |
| 2804 | CWS Aceite Operating, Inc. | Cotulla, TX 78014 | Oil & Gas Operator | Aug 2018 |
| 2805 | CWT Operating, LLC | McKinney, TX 75072 | Oil & Gas Operator | Oct 2024 |
| 2806 | CX Disposals LLC | Minco, OK 73059-9472 | Oil Operator | Sep 2024 |
| 2807 | CX Operating LLC | Dallas, TX 75238 | Oil & Gas Operator | Dec 2024 |
| 2808 | CX Operating, Inc. | | Oil & Gas Operator | Oct 2023 |
| 2809 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | Dec 2024 |
| 2810 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 2811 | Cyanostar Energy, Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Sep 2001 |
| 2812 | Cyber Enviro-Tech Inc | | Oil Operator | Dec 2024 |
| 2813 | Cycle Oil & Gas Inc. | Breckenridge, TX 76424 | Oil Operator | Dec 2024 |
| 2814 | Cycle Oil & Gas LTD | | Gas Operator | Sep 2024 |
| 2815 | Cyclone Exploration, Inc. | Florence, CO 81226 | Oil & Gas Operator | Dec 2024 |
| 2816 | Cyclone Petroleu | | Oil & Gas Operator | Nov 1995 |
| 2817 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Sep 2024 |
| 2818 | Cyclops Corp | Pittsburgh, PA 15228 | Oil & Gas Operator | Dec 1992 |
| 2819 | Cygnus Producing Corporation | | Oil & Gas Operator | Feb 1990 |
| 2820 | Cymri Corporation, The | Houston, TX 77057 | Oil & Gas Operator | Mar 2008 |
| 2821 | Cymri, L.L.C. | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
| 2822 | Cynpat Oil & Gas, Inc. | Sulphur SPGS, TX 75482 | Oil Operator | Nov 2018 |
| 2823 | Cypress Creek Production Company | Magnolia, AR 71753 | Oil Operator | Jun 2024 |
| 2824 | Cypress E & P Corporation | Leander, TX 78646 | Oil & Gas Operator | Sep 2016 |
| 2825 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Oct 2024 |
| 2826 | Cypress Gas Pipeline Company | | Oil Operator | Dec 1998 |
| 2827 | Cypress Gas Pipeline, LLC | | Oil Operator | Sep 2019 |
| 2828 | Cypress Oil Company, Inc. | | Oil & Gas Operator | Aug 2003 |
| 2829 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 2830 | Cypress Partners, Inc. | Houston, TX 77068 | Oil & Gas Operator | May 1999 |
| 2831 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Dec 2024 |
| 2832 | Cypress Resources | | Oil & Gas Operator | Jul 2004 |
| 2833 | Cyrus, Scott | Louisa, KY 41230 | Oil Operator | Dec 2022 |
| 2834 | Cyrus, Wade T | Fort Gay, WV 25574 | Oil & Gas Operator | Dec 2013 |
| 2835 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |
| 2836 | Czarniak, Dennis G. | Holland, NY 14080 | Gas Operator | Dec 2023 |
| 2837 | Czerniak, Michael A. And Cheryl A. | Lakewood, NY 14750 | Gas Operator | Dec 2023 |
| 2838 | Czesak Dairy Farm, LLC | Chaffee, NY 14030 | Gas Operator | Dec 2023 |
| 2839 | Czworka, Terry D. | Le Roy, NY 14482 | Gas Operator | Dec 2023 |