| 1 | Badger Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 2 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 3 | Belco Development Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 1994 |
| 4 | Belco Petroleum Corp | Grand Junction, CO | Oil & Gas Operator | Dec 1983 |
| 5 | Bering Operating Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | May 2001 |
| 6 | Black Diamond Energy, LLC | | Oil & Gas Operator | Oct 2008 |
| 7 | BP Exploration Inc | | Oil & Gas Operator | May 1993 |
| 8 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 9 | Breakthrough Ventures, LLC | | Oil Operator | Jan 2025 |
| 10 | Brechtel Energy Corporation | | Oil & Gas Operator | Sep 2008 |
| 11 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 12 | Britlind Oil LLC | | Oil & Gas Operator | Dec 2020 |
| 13 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 14 | Burlington Res Oil & Gas Co | | Oil & Gas Operator | Dec 2000 |
| 15 | Burlington Res Oil & Gas LP | | Oil & Gas Operator | Mar 2013 |
| 16 | Bushwood Leasing, LLC | | Oil Operator | Dec 2024 |
| 17 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |