| 1 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Feb 2026 |
| 2 | B. L. G. Company | | Gas Operator | Nov 1989 |
| 3 | Bagby Operating Co., Inc. | | Gas Operator | Aug 2001 |
| 4 | Baker Petroleum Corporation | | Gas Operator | Dec 1995 |
| 5 | Barnette & Sons, Inc. | Dubach, LA 71235 | Oil & Gas Operator | Mar 2011 |
| 6 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 7 | Bayles & White | | Gas Operator | Dec 2013 |
| 8 | Bayou L'Ours Oil & Gas Co. | | Gas Operator | Mar 1988 |
| 9 | Bengal Oil & Gas, Inc. | | Gas Operator | Mar 2006 |
| 10 | Bethlan Production Corporation | | Oil & Gas Operator | Dec 1994 |
| 11 | Black Diamond Production Co. | | Oil & Gas Operator | Mar 2021 |
| 12 | Bob L. Herd & Petrofunds | | Oil & Gas Operator | Mar 1984 |
| 13 | Bobby Jenny | | Gas Operator | Dec 2001 |
| 14 | Bopco, L.P. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 15 | Brown Frac Tank Co., Inc. | | Gas Operator | Dec 2008 |
| 16 | Bryant Oil & Gas Corporation | | Oil & Gas Operator | Mar 1987 |
| 17 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 18 | Burris Run Company | | Gas Operator | Sep 1993 |