| 4701 | Caleco LLC | | Oil & Gas Operator | Dec 2024 |
| 4702 | Caledonia Energy Partners, LLC | | Oil & Gas Operator | Mar 2007 |
| 4703 | Calera Gas LLC | Montevallo, AL 35115 | Gas Operator | Feb 2025 |
| 4704 | Calfas Cattle & Oil, LLC | San Antonio, TX 78205 | Oil Operator | Apr 2025 |
| 4705 | Calfas Oil, LLC | San Antonio, TX 78205 | Oil Operator | Apr 2025 |
| 4706 | Calgary Energy LLC | Collinsville, OK 74021 | Oil & Gas Operator | Jan 2025 |
| 4707 | Calhoun & Ellison Oil Co. | San Antonio, TX 78248 | Oil & Gas Operator | Dec 1997 |
| 4708 | Calhoun, Clay | | Gas Operator | Sep 1989 |
| 4709 | Cali Crude LLC | Austin, TX 78738 | Oil Operator | Apr 2025 |
| 4710 | Calico Operating Co., Inc. | Dallas, TX 75205 | Oil & Gas Operator | Dec 2002 |
| 4711 | Caliente Oil LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Apr 2025 |
| 4712 | California E.D.I. Inc. | | Oil & Gas Operator | Jan 2018 |
| 4713 | California Hydrocarbons Corporation | | Gas Operator | Dec 2024 |
| 4714 | California Oil Co | | Oil & Gas Operator | Aug 1965 |
| 4715 | California Oil Independents | | Oil & Gas Operator | Dec 2024 |
| 4716 | California Petroleum Group Inc. | | Oil Operator | Dec 2024 |
| 4717 | California Resources Elk Hills LLC | | Oil & Gas Operator | Dec 2024 |
| 4718 | California Resources Long Beach Inc. | | Oil & Gas Operator | Dec 2024 |
| 4719 | California Resources Production Corporation | | Oil & Gas Operator | Dec 2024 |
| 4720 | California Southern Oil Co. | | Oil Operator | Dec 2000 |
| 4721 | California Time Petroleum, Inc | | Oil Operator | Mar 1986 |
| 4722 | California/Nevada Developments LLC | | Oil Operator | Dec 2001 |
| 4723 | Calima Energy LLC | Electra, TX 76360 | Oil Operator | Apr 2025 |
| 4724 | Calistoga Energy Reserves, LLC | Houston, TX 77063 | Oil & Gas Operator | Apr 2025 |
| 4725 | Calk Oil Company | Lytle, TX 78052 | Oil Operator | Apr 2025 |
| 4726 | Calk Operating, LLC | Lytle, TX 78052 | Oil Operator | Apr 2025 |
| 4727 | Calk, Roger D. | Lytle, TX 78052 | Oil & Gas Operator | Apr 2025 |
| 4728 | Call Farms, Inc. | Batavia, NY 14020 | Gas Operator | Dec 2023 |
| 4729 | Call Harold Charles | Dewey, OK 74029-3053 | Oil Operator | Jan 2025 |
| 4730 | Call, Harold L | | Oil Operator | Mar 2015 |
| 4731 | Callahan Land Company | Richardson, TX 75081 | Oil & Gas Operator | Sep 2020 |
| 4732 | Callahan, Stephen Et Al | Navarre, FL 32566 | Oil & Gas Operator | Dec 2022 |
| 4733 | Callander & Kimbrel Inc | Cerluean, KY 42215 | Oil & Gas Operator | Dec 1989 |
| 4734 | Callarman, David | Cisco, TX 76437 | Oil & Gas Operator | Apr 2025 |
| 4735 | Callaway Oil & Gas LLC | Gillette, WY 82717 | Oil & Gas Operator | Jan 2025 |
| 4736 | Callaway Production Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 4737 | Calley, Bob | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 4738 | Callie Oil Company LLC | Perry, OK 73077-9375 | Oil & Gas Operator | Jan 2025 |
| 4739 | Callon (Eagle Ford) LLC | Houston, TX 77042 | Oil & Gas Operator | Jun 2023 |
| 4740 | Callon (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 4741 | Callon Offshore Production, Inc. | Natchez, MS 39121 | Oil & Gas Operator | Dec 2005 |
| 4742 | Callon Oil Co, Cambell | | Oil & Gas Operator | Oct 1984 |
| 4743 | Callon Permian II, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2024 |
| 4744 | Callon Petroleum Company | Natchez, MS 39120 | Oil & Gas Operator | Jan 2000 |
| 4745 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 4746 | Calnrg Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 4747 | Calpetco III-Teel 77 A | | Gas Operator | May 1980 |
| 4748 | Calpetco-Herbst Expl. Inc. | | Gas Operator | Jan 1990 |
| 4749 | Calpine Natural Gas Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2002 |
| 4750 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 4751 | Calpine Natural Gas L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 4752 | Calresources LLC | | Oil & Gas Operator | Dec 1996 |
| 4753 | Caltex Energy Co. | Luling, TX 78648 | Oil & Gas Operator | Apr 2025 |
| 4754 | Caltico Oil Corp. | | Oil Operator | Dec 2024 |
| 4755 | Calto Operating Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2004 |
| 4756 | Calumet Lubricants Company | | Oil Operator | Dec 1993 |
| 4757 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
| 4758 | Calumet Refining Co. | | Oil Operator | May 1991 |
| 4759 | Calvert Company | Oklahoma City, OK 73154-1589 | Oil & Gas Operator | Dec 2021 |
| 4760 | Calvert Drilling Co. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 1992 |
| 4761 | Calvert Exploration Co | | Oil & Gas Operator | Apr 1993 |
| 4762 | Calvert Operating LLC | Oklahoma City, OK 73118 | Oil Operator | Feb 2025 |
| 4763 | Calvin Explorati | | Oil & Gas Operator | Oct 1991 |
| 4764 | Calvin F Tennison | Granbury, TX 76049 | Oil & Gas Operator | Apr 2007 |
| 4765 | Calvin Noah, LLC | Valley Center, KS 67147 | Oil Operator | Dec 2024 |
| 4766 | Calyx Energy III LLC | Tulsa, OK 74136-4226 | Oil & Gas Operator | Jan 2025 |
| 4767 | Calyx Energy LLC | Tulsa, OK 74146-3807 | Oil & Gas Operator | Feb 2020 |
| 4768 | Calyx Exploration & Production | | Oil & Gas Operator | Jul 1991 |
| 4769 | Cam Company | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2004 |
| 4770 | Cam Consultants Inc | Akron, OH 44309 | Oil & Gas Operator | Dec 2023 |
| 4771 | Cam Development | | Oil & Gas Operator | Dec 1990 |
| 4772 | Camar Exploration | | Oil Operator | Jan 1989 |
| 4773 | Cambern, Rex | Montgomery, TX 77356 | Oil Operator | Jan 1996 |
| 4774 | Cambria Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 4775 | Cambria Oil Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1996 |
| 4776 | Cambrian Hunter Inc | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2023 |
| 4777 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Apr 2025 |
| 4778 | Cambrian Oil Inc | Odessa, TX 79760 | Oil & Gas Operator | Aug 1996 |
| 4779 | Cambridge Energy Corporation | | Oil & Gas Operator | Jul 2003 |
| 4780 | Cambridge Production, Inc. | Amarillo, TX 79120 | Oil & Gas Operator | Nov 2020 |
| 4781 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 4782 | Camco Resources, Inc. | | Oil Operator | Aug 1991 |
| 4783 | Camco Saltwater Transport | George West, TX 78022 | Oil Operator | Feb 2015 |
| 4784 | Camco Saltwater Transport,L.L.C. | George West, TX 78022 | Oil Operator | Apr 2025 |
| 4785 | Camco, Inc | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 4786 | Camden Oil & Gas, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Dec 2005 |
| 4787 | Camden Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Mar 2011 |
| 4788 | Camden Resources, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 2008 |
| 4789 | Camden Resources, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Dec 2015 |
| 4790 | Camelot Oil And Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 4791 | Cameron & Kincaid | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1986 |
| 4792 | Cameron Brothers | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1995 |
| 4793 | Cameron Development Co., Inc. | | Oil & Gas Operator | Mar 1988 |
| 4794 | Cameron Energy Co | Sheffield, PA 16347-2642 | Oil & Gas Operator | Dec 2024 |
| 4795 | Cameron Engineering, Inc | Montgomery, TX 77356 | Oil & Gas Operator | Jun 2003 |
| 4796 | Cameron Exploration, Inc. | Longview, TX 75604 | Oil & Gas Operator | Apr 2025 |
| 4797 | Cameron LNG, LLC | | Oil Operator | Jan 2025 |
| 4798 | Cameron Oil & Gas Company | | Gas Operator | Dec 2016 |
| 4799 | Cameron Oil & Gas Inc | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2025 |
| 4800 | Cameron Production Co Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |