| 1 | B.W.O.C., Inc. | Plano, TX 75026 | Oil & Gas Operator | Dec 2024 |
| 2 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Dec 2024 |
| 3 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 4 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 5 | Baytex Energy USA, Inc. | Houston, TX 77084 | Oil & Gas Operator | Dec 2024 |
| 6 | BBL Operating Company LLC | Colleyville, TX 76034 | Oil & Gas Operator | Dec 2024 |
| 7 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 8 | Benco Energy Inc | Tionesta, PA 16353-5851 | Oil & Gas Operator | Dec 2002 |
| 9 | Blue Star Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 10 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 11 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
| 12 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2024 |
| 13 | Broughton Operating Corp. | Pittsburgh, PA 15219 | Oil & Gas Operator | Nov 2000 |
| 14 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 15 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 16 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 17 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Dec 2024 |