| 1 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 2 | Bargo Energy Corporation | | Oil & Gas Operator | Apr 2000 |
| 3 | Bayou Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jan 2015 |
| 4 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 5 | Benton Oil & Gas Company Of La | | Oil & Gas Operator | Apr 1997 |
| 6 | Beta Oil Inc | | Oil Operator | Feb 1986 |
| 7 | Beta Operating, Inc | | Oil & Gas Operator | May 2001 |
| 8 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 9 | Black Gold Production Company | | Oil & Gas Operator | Feb 1998 |
| 10 | Blakely Land & Exploration Co. | | Oil & Gas Operator | Apr 1991 |
| 11 | Borden, Inc. | Columbus, OH 43215 | Oil & Gas Operator | May 1990 |
| 12 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 13 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 14 | Brazos River LLC | | Oil & Gas Operator | Apr 2002 |
| 15 | Brehm Exploration, Inc. | | Oil & Gas Operator | Mar 1995 |
| 16 | Burlington Res Oil & Gas Co | | Oil & Gas Operator | Dec 2000 |
| 17 | Burlington Res Oil & Gas LP | | Oil & Gas Operator | Mar 2013 |