| 1 | B & M Oilfield Service, Inc. | | Oil Operator | Mar 1999 |
| 2 | B & R Operating Service | | Oil Operator | Jan 1990 |
| 3 | Bay Gas, LLC | | Oil & Gas Operator | Sep 2025 |
| 4 | Beard And Ganey | | Oil & Gas Operator | Oct 1986 |
| 5 | Bech Oil & Gas, Inc. | | Oil & Gas Operator | Mar 1994 |
| 6 | Ben Carroll | | Oil Operator | Dec 1985 |
| 7 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 8 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 9 | Big Pine Petroleum Inc. | | Oil & Gas Operator | Dec 2024 |
| 10 | Big River Oil Field Services, LLC | | Oil Operator | Mar 2017 |
| 11 | Big-Joe Operating, Co. | | Oil & Gas Operator | May 2017 |
| 12 | Biglane Operating Company | | Oil & Gas Operator | Aug 2025 |
| 13 | Billingsley Engineering Co. | | Oil & Gas Operator | May 1994 |
| 14 | Billy P. Bullock-Production | | Oil Operator | Jan 1991 |
| 15 | Bob Bertolet | | Oil & Gas Operator | Dec 2001 |
| 16 | Bob Bertolet, J Dale IV,Munoco | | Oil Operator | Sep 1991 |
| 17 | Bradford Oil LLC | | Oil Operator | Jan 2025 |
| 18 | Brookwater Energy Services, LLC | | Oil & Gas Operator | Dec 2024 |
| 19 | Bud'S Pumping Service Inc. | | Oil Operator | Dec 1997 |