| 1 | B & B Resources | Tulsa, OK 74136-2655 | Oil & Gas Operator | Dec 2023 |
| 2 | Bald Hill Oil | Sheffield, PA 16347-0274 | Oil & Gas Operator | Dec 2023 |
| 3 | Barnes Resources | Kane, PA 16735-0441 | Oil & Gas Operator | Dec 2015 |
| 4 | Bear Lake Energy | Sugar Grove, PA 16350-2104 | Gas Operator | Dec 2023 |
| 5 | Bearcat Oil Co | Sugar Grove, PA 16350-0527 | Oil & Gas Operator | Dec 2008 |
| 6 | Bearcat Oil Co LLC | Sugar Grove, PA 16350-4032 | Oil & Gas Operator | Dec 2023 |
| 7 | Beck James L | Pleasantville, PA 16341-2718 | Oil Operator | Dec 2004 |
| 8 | Belden & Blake Corporation | North Canton, OH 44720-0500-0500 | Oil & Gas Operator | Dec 2016 |
| 9 | Berea Oil & Gas Corp | Buffalo, NY 14202 | Oil & Gas Operator | Dec 2002 |
| 10 | BF Adventures LLC | Warren, PA 16365-8306 | Oil & Gas Operator | Dec 2023 |
| 11 | BJS LLC | Warren, PA 16365-2415 | Oil & Gas Operator | Dec 2022 |
| 12 | BLX Inc | Edmond, OK 73013 | Oil & Gas Operator | Sep 2024 |
| 13 | Bobcat Well & Pipeline LLC | Canfield, OH 44406 | Oil & Gas Operator | Dec 2021 |
| 14 | Branch John D | Warren, PA 16365-8356 | Oil & Gas Operator | Dec 2023 |
| 15 | Bull Run Energy LLC | Warren, PA 16365-2215 | Oil & Gas Operator | Dec 2017 |
| 16 | Bull Run Resources LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2023 |