| 4701 | Canton Oil & Gas Co | Pleasantville, PA 16341-1729 | Oil & Gas Operator | Dec 2004 |
| 4702 | Cantrell Energy Corporation | Ada, OK 74820-0835 | Oil & Gas Operator | May 2026 |
| 4703 | Cantrell Oil Co. | Elbert, TX 76359 | Oil & Gas Operator | Aug 2003 |
| 4704 | Cantrell Robert R | Ada, OK 74820 | Oil & Gas Operator | Apr 2026 |
| 4705 | Cantro Exploration, Inc. | San Antonio, TX 78270 | Oil & Gas Operator | May 2000 |
| 4706 | Cantu Operating, LLC | McAllen, TX 78504 | Oil Operator | Aug 2026 |
| 4707 | Canvas Energy LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2026 |
| 4708 | Canyon Creek Energy Arkoma LLC | Tulsa, OK 74120-3017 | Oil & Gas Operator | Apr 2026 |
| 4709 | Canyon Creek Energy Operating LLC | Tulsa, OK 74120 | Oil & Gas Operator | May 2026 |
| 4710 | Canyon Creek Energy Texas, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2017 |
| 4711 | Canyon Creek Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2026 |
| 4712 | Canyon E & P Company | Dallas, TX 75206 | Oil Operator | Oct 2013 |
| 4713 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Oct 2025 |
| 4714 | Canyon Oil & Gas Exploration LLC | San Antonio, TX 78258 | Oil & Gas Operator | May 2002 |
| 4715 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Aug 2026 |
| 4716 | Canyon Operating Unit | San Angelo, TX 76904 | Oil & Gas Operator | Sep 1995 |
| 4717 | Canyon Reef Brine LLC | Snyder, TX 79550 | Oil Operator | Aug 2026 |
| 4718 | Canyon Ridge Energy LLC | Iowa Park, TX 76367 | Oil Operator | Nov 2024 |
| 4719 | Cap Energy LLC | Greeley, CO 80634 | Oil & Gas Operator | Aug 2019 |
| 4720 | Cap Oil Company | Ada, OK 74820 | Oil Operator | Mar 2026 |
| 4721 | Cap Operating Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2026 |
| 4722 | Cap Production | | Oil Operator | Dec 2024 |
| 4723 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 4724 | Capco Offshore Of Texas, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2026 |
| 4725 | Capco Offshore, Inc. | Irving, TX 75063 | Oil & Gas Operator | May 2012 |
| 4726 | Capco Resource Corporation | Orange,, CA 92869 | Oil Operator | Sep 2007 |
| 4727 | Capco Resources Corporation | Irving, TX 75016 | Oil & Gas Operator | Mar 2004 |
| 4728 | Capco Resources Of Texas, Inc | Irving, TX 75063 | Oil & Gas Operator | Jun 2003 |
| 4729 | Cape Oil Associates | | Oil & Gas Operator | Sep 1997 |
| 4730 | Cape Operating, Inc. | Longview, TX 75608 | Oil & Gas Operator | Nov 2007 |
| 4731 | Cape, Randy | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 4732 | Capio Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2015 |
| 4733 | Capital A Corp. | San Antonio, TX 78279 | Oil & Gas Operator | Jun 2002 |
| 4734 | Capital Energy Group, Inc. | Bardonia, NY 10954 | Oil Operator | Jan 1998 |
| 4735 | Capital Energy, LLC | Ripley, WV 25271 | Oil & Gas Operator | Dec 2021 |
| 4736 | Capital Gas, Inc. | | Gas Operator | Jan 1998 |
| 4737 | Capital Oil & Gas Inc | Austintown, OH 44515-3033 | Oil & Gas Operator | Dec 2025 |
| 4738 | Capital Pet & Investments Inc | Oklahoma City, OK 73102-7400 | Oil & Gas Operator | Mar 2015 |
| 4739 | Capital Production Company | | Oil Operator | Dec 1997 |
| 4740 | Capital Programs Company Inc | Addison, TX 75001-6030 | Oil Operator | Jul 2021 |
| 4741 | Capital Star Oil & Gas, Inc. | Houston, TX 77027 | Oil & Gas Operator | Aug 2026 |
| 4742 | Capitan Energy, Incorporated | Carlsbad, NM 88221 | Oil & Gas Operator | Aug 2026 |
| 4743 | Capitan Operating LLC | Reno, NV 89502 | Oil & Gas Operator | Jan 2013 |
| 4744 | Capitol Oil & Gas Corporation | Centennial, WY 82055 | Oil Operator | Feb 2006 |
| 4745 | Capitol Oil Corporation | | Oil & Gas Operator | Dec 2025 |
| 4746 | Capitol Operating & Expl., Inc. | Austin, TX 78766 | Oil & Gas Operator | Feb 2001 |
| 4747 | Capitol Operating Group, LLC | Lafayette, LA 70503-5334 | Oil & Gas Operator | Jun 2026 |
| 4748 | Capitol Well Servicing Co., Inc. | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2023 |
| 4749 | Capmac Inc | Tulsa, OK 74105-7119 | Oil & Gas Operator | Jan 2007 |
| 4750 | Capp Petroleum, LLC | Ashland, KY 41105 | Oil & Gas Operator | Dec 2020 |
| 4751 | Cappellino, Marina A. | Arcade, NY 14009 | Gas Operator | Dec 2025 |
| 4752 | Capps, R. Oil Corp. | Midland, TX 79704 | Oil & Gas Operator | Oct 2002 |
| 4753 | Caprock Drilling & Operating Co Inc | Edmonton, KY 42129 | Oil Operator | Dec 2024 |
| 4754 | Caprock Energy, Inc. | Denton, TX 76205 | Oil & Gas Operator | Apr 1993 |
| 4755 | Caprock Engineering, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2018 |
| 4756 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Aug 2026 |
| 4757 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 4758 | Caprock, Inc. | Ralls, TX 79357 | Oil & Gas Operator | Mar 2013 |
| 4759 | Capstone Cactus Operating Comp. | Hennessey, OK 73742 | Oil & Gas Operator | Aug 2026 |
| 4760 | Capstone Natural Res II, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 4761 | Capstone Natural Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2015 |
| 4762 | Capstone Oil & Gas LLC | Hennessey, OK 73742 | Oil & Gas Operator | Apr 2026 |
| 4763 | Capstone Oil Producing LLC | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2025 |
| 4764 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742 | Oil Operator | Dec 2019 |
| 4765 | Captain'S Oil Inc. | Louisburg, KS 66053 | Oil Operator | Sep 2003 |
| 4766 | Capturepoint LLC | Allen, TX 75013 | Oil & Gas Operator | Aug 2026 |
| 4767 | Car-Tex Producing Company | | Oil & Gas Operator | Dec 1994 |
| 4768 | Cara Ventures In | | Oil Operator | May 1995 |
| 4769 | Carageannis, Paul C | Attica, KS 67009 | Oil Operator | Feb 2001 |
| 4770 | Caravel Energy O | | Oil & Gas Operator | Feb 1987 |
| 4771 | Caraway Operating Co. | San Angelo, TX 76902 | Oil & Gas Operator | Aug 2026 |
| 4772 | Caraway, Robert | Cisco, TX 76437 | Oil & Gas Operator | Aug 2026 |
| 4773 | Caraway, Robert R. | Cisco, TX 76437 | Oil & Gas Operator | Aug 2026 |
| 4774 | Carbon California Operating Company LLC | | Oil & Gas Operator | Jun 2026 |
| 4775 | Carbon Creek Energy LLC | Sheridan, WY 82801 | Oil & Gas Operator | Apr 2026 |
| 4776 | Carbon Economy LLC | Chickasha, OK 73023 | Oil & Gas Operator | May 2026 |
| 4777 | Carbon Energy Corporation (USA) | Denver, CO 80290 | Oil & Gas Operator | Jul 2004 |
| 4778 | Carbon Field Energy, L.L.C. | Kilgore, TX 75663 | Oil Operator | Apr 2019 |
| 4779 | Carbon Oil Inc | Vidor, TX 77670 | Oil & Gas Operator | Aug 2026 |
| 4780 | Carbon Ridge Energy LLC | Norman, OK 73069 | Oil & Gas Operator | May 2026 |
| 4781 | Carburante Exploration Co, LTD. | Granbury, TX 76048 | Oil & Gas Operator | Aug 2026 |
| 4782 | Card Operating Company, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Dec 1995 |
| 4783 | Carder Oil Company | | Oil & Gas Operator | Dec 2024 |
| 4784 | Cardinal & Great Plains & Kaufman | | Oil Operator | Apr 1985 |
| 4785 | Cardinal Drilling Co. | | Oil Operator | Jan 2007 |
| 4786 | Cardinal Energy | | Oil & Gas Operator | Dec 2008 |
| 4787 | Cardinal Energy Company | Rowlett, TX 75088 | Oil & Gas Operator | Aug 2026 |
| 4788 | Cardinal Expl And Prod | | Oil & Gas Operator | May 2019 |
| 4789 | Cardinal Oil & Gas, Inc. | | Oil & Gas Operator | Jun 1995 |
| 4790 | Cardinal Oil Company, Inc. | | Oil Operator | Dec 2025 |
| 4791 | Cardinal Oil LLC | Drumright, OK 74030 | Oil & Gas Operator | Apr 2026 |
| 4792 | Cardinal Operating Corporation | Waxahachie, TX 75165 | Oil & Gas Operator | Jan 1997 |
| 4793 | Cardinal Petroleum Co. | | Oil & Gas Operator | May 2004 |
| 4794 | Cardinal Petroleum Corp Of La | | Oil Operator | May 2003 |
| 4795 | Cardinal Producing Co. | Abilene, TX 79606 | Oil & Gas Operator | Aug 2003 |
| 4796 | Cardinal River Operating LLC | Oklahoma City, OK 73102-7109 | Oil & Gas Operator | Apr 2026 |
| 4797 | Cardinal Shares, Inc. | West Bloomfld, MI 48322 | Oil & Gas Operator | Mar 2004 |
| 4798 | Cardinal Wyoming LLC | | Oil & Gas Operator | Jun 2026 |
| 4799 | Cardneaux Inc | | Oil & Gas Operator | Aug 2009 |
| 4800 | Cardwell Oil Corporation | Midland, TX 79710 | Oil & Gas Operator | Aug 2026 |