| 4801 | Cantium, LLC | | Oil & Gas Operator | Dec 2024 |
| 4802 | Canton Oil & Gas Co | Pleasantville, PA 16341-1729 | Oil & Gas Operator | Dec 2004 |
| 4803 | Cantrell Energy Corporation | Ada, OK 74820-0835 | Oil & Gas Operator | Jun 2025 |
| 4804 | Cantrell Oil Co. | Elbert, TX 76359 | Oil & Gas Operator | Aug 2003 |
| 4805 | Cantrell Robert R | Ada, OK 74820 | Oil & Gas Operator | Jun 2025 |
| 4806 | Cantro Exploration, Inc. | San Antonio, TX 78270 | Oil & Gas Operator | May 2000 |
| 4807 | Cantu Operating, LLC | McAllen, TX 78504 | Oil Operator | Oct 2025 |
| 4808 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Jul 2025 |
| 4809 | Canyon Creek Energy Arkoma LLC | Tulsa, OK 74120-3017 | Oil & Gas Operator | Jun 2025 |
| 4810 | Canyon Creek Energy Operating LLC | Tulsa, OK 74120 | Oil & Gas Operator | Jun 2025 |
| 4811 | Canyon Creek Energy Texas, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2017 |
| 4812 | Canyon Creek Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 4813 | Canyon E & P Company | Dallas, TX 75206 | Oil Operator | Oct 2013 |
| 4814 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Jun 2025 |
| 4815 | Canyon Oil & Gas Exploration LLC | San Antonio, TX 78258 | Oil & Gas Operator | May 2002 |
| 4816 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 4817 | Canyon Operating Unit | San Angelo, TX 76904 | Oil & Gas Operator | Sep 1995 |
| 4818 | Canyon Reef Brine LLC | Snyder, TX 79550 | Oil Operator | Oct 2025 |
| 4819 | Canyon Ridge Energy LLC | Iowa Park, TX 76367 | Oil Operator | Nov 2024 |
| 4820 | Cap Energy LLC | Greeley, CO 80634 | Oil & Gas Operator | Aug 2019 |
| 4821 | Cap Oil Company | Ada, OK 74820 | Oil Operator | Apr 2025 |
| 4822 | Cap Operating Inc. | Borger, TX 79008 | Oil & Gas Operator | Oct 2025 |
| 4823 | Cap Production | | Oil Operator | Dec 2024 |
| 4824 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 4825 | Capco Offshore Of Texas, Inc. | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 4826 | Capco Offshore, Inc. | Irving, TX 75063 | Oil & Gas Operator | May 2012 |
| 4827 | Capco Resource Corporation | Orange,, CA 92869 | Oil Operator | Sep 2007 |
| 4828 | Capco Resources Corporation | Irving, TX 75016 | Oil & Gas Operator | Mar 2004 |
| 4829 | Capco Resources Of Texas, Inc | Irving, TX 75063 | Oil & Gas Operator | Jun 2003 |
| 4830 | Cape Oil Associates | | Oil & Gas Operator | Sep 1997 |
| 4831 | Cape Operating, Inc. | Longview, TX 75608 | Oil & Gas Operator | Nov 2007 |
| 4832 | Cape, Randy | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 4833 | Capio Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2015 |
| 4834 | Capital A Corp. | San Antonio, TX 78279 | Oil & Gas Operator | Jun 2002 |
| 4835 | Capital Energy Group, Inc. | Bardonia, NY 10954 | Oil Operator | Jan 1998 |
| 4836 | Capital Energy, LLC | Ripley, WV 25271 | Oil & Gas Operator | Dec 2021 |
| 4837 | Capital Gas, Inc. | | Gas Operator | Jan 1998 |
| 4838 | Capital Oil & Gas Inc | Austintown, OH 44515-3033 | Oil & Gas Operator | Dec 2024 |
| 4839 | Capital Pet & Investments Inc | Oklahoma City, OK 73102-7400 | Oil & Gas Operator | Mar 2015 |
| 4840 | Capital Production Company | | Oil Operator | Dec 1997 |
| 4841 | Capital Programs Company Inc | Addison, TX 75001-6030 | Oil Operator | Jul 2021 |
| 4842 | Capital Star Oil & Gas, Inc. | Houston, TX 77027 | Oil & Gas Operator | Oct 2025 |
| 4843 | Capitan Energy, Incorporated | Carlsbad, NM 88221 | Oil & Gas Operator | Oct 2025 |
| 4844 | Capitan Operating LLC | Reno, NV 89502 | Oil & Gas Operator | Jan 2013 |
| 4845 | Capitol Oil & Gas Corporation | Centennial, WY 82055 | Oil Operator | Feb 2006 |
| 4846 | Capitol Oil Corporation | | Oil & Gas Operator | Jul 2025 |
| 4847 | Capitol Operating & Expl., Inc. | Austin, TX 78766 | Oil & Gas Operator | Feb 2001 |
| 4848 | Capitol Operating Group, LLC | Lafayette, LA 70503-5334 | Oil & Gas Operator | Aug 2025 |
| 4849 | Capitol Well Servicing Co., Inc. | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2023 |
| 4850 | Capmac Inc | Tulsa, OK 74105-7119 | Oil & Gas Operator | Jan 2007 |
| 4851 | Capp Petroleum, LLC | Ashland, KY 41105 | Oil & Gas Operator | Dec 2020 |
| 4852 | Cappellino, Nancy J. & Marina A. | Arcade, NY 14009 | Gas Operator | Dec 2024 |
| 4853 | Capps, R. Oil Corp. | Midland, TX 79704 | Oil & Gas Operator | Oct 2002 |
| 4854 | Caprock Drilling & Operating Co Inc | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 4855 | Caprock Energy, Inc. | Denton, TX 76205 | Oil & Gas Operator | Apr 1993 |
| 4856 | Caprock Engineering, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2018 |
| 4857 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 4858 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 4859 | Caprock, Inc. | Ralls, TX 79357 | Oil & Gas Operator | Mar 2013 |
| 4860 | Capstone Cactus Operating Comp. | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 4861 | Capstone Natural Res II, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 4862 | Capstone Natural Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2015 |
| 4863 | Capstone Oil & Gas LLC | Hennessey, OK 73742 | Oil & Gas Operator | Jul 2025 |
| 4864 | Capstone Oil Producing LLC | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2024 |
| 4865 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742 | Oil Operator | Dec 2019 |
| 4866 | Captain'S Oil Inc. | Louisburg, KS 66053 | Oil Operator | Sep 2003 |
| 4867 | Capturepoint LLC | Allen, TX 75013 | Oil & Gas Operator | Oct 2025 |
| 4868 | Car-Tex Producing Company | | Oil & Gas Operator | Dec 1994 |
| 4869 | Cara Ventures In | | Oil Operator | May 1995 |
| 4870 | Carageannis, Paul C | Attica, KS 67009 | Oil Operator | Feb 2001 |
| 4871 | Caravel Energy O | | Oil & Gas Operator | Feb 1987 |
| 4872 | Caraway Operating Co. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 4873 | Caraway, Robert | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 4874 | Caraway, Robert R. | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 4875 | Carbon California Operating Company LLC | | Oil & Gas Operator | Aug 2025 |
| 4876 | Carbon Creek Energy LLC | Sheridan, WY 82801 | Oil & Gas Operator | Jul 2025 |
| 4877 | Carbon Economy LLC | Chickasha, OK 73023 | Oil & Gas Operator | Jul 2025 |
| 4878 | Carbon Energy Corporation (USA) | Denver, CO 80290 | Oil & Gas Operator | Jul 2004 |
| 4879 | Carbon Field Energy, L.L.C. | Kilgore, TX 75663 | Oil Operator | Apr 2019 |
| 4880 | Carbon Oil Inc | Vidor, TX 77670 | Oil & Gas Operator | Oct 2025 |
| 4881 | Carbon Ridge Energy LLC | Norman, OK 73069 | Oil & Gas Operator | Jun 2025 |
| 4882 | Carburante Exploration Co, LTD. | Granbury, TX 76048 | Oil & Gas Operator | Oct 2025 |
| 4883 | Card Operating Company, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Dec 1995 |
| 4884 | Carder Oil Company | | Oil & Gas Operator | Dec 2024 |
| 4885 | Cardinal & Great Plains & Kaufman | | Oil Operator | Apr 1985 |
| 4886 | Cardinal Drilling Co. | | Oil Operator | Jan 2007 |
| 4887 | Cardinal Energy | | Oil & Gas Operator | Dec 2008 |
| 4888 | Cardinal Energy Company | Rowlett, TX 75088 | Oil & Gas Operator | Oct 2025 |
| 4889 | Cardinal Energy LLC | | Oil & Gas Operator | Dec 2021 |
| 4890 | Cardinal Expl And Prod | | Oil & Gas Operator | May 2019 |
| 4891 | Cardinal Oil & Gas, Inc. | | Oil & Gas Operator | Jun 1995 |
| 4892 | Cardinal Oil Company, Inc. | | Oil Operator | Dec 2024 |
| 4893 | Cardinal Oil LLC | Drumright, OK 74030 | Oil & Gas Operator | Apr 2025 |
| 4894 | Cardinal Operating Corporation | Waxahachie, TX 75165 | Oil & Gas Operator | Jan 1997 |
| 4895 | Cardinal Petroleum Co. | | Oil & Gas Operator | May 2004 |
| 4896 | Cardinal Petroleum Corp Of La | | Oil Operator | May 2003 |
| 4897 | Cardinal Producing Co. | Abilene, TX 79606 | Oil & Gas Operator | Aug 2003 |
| 4898 | Cardinal River Operating LLC | Oklahoma City, OK 73102-7109 | Oil & Gas Operator | Jun 2025 |
| 4899 | Cardinal Shares, Inc. | West Bloomfld, MI 48322 | Oil & Gas Operator | Mar 2004 |
| 4900 | Cardinal Wyoming LLC | | Oil & Gas Operator | Aug 2025 |