| 1 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Feb 2026 |
| 2 | B K L Incorporated | Morton, TX 79346 | Oil & Gas Operator | Jun 2002 |
| 3 | Baham Energy Services, LLC | | Oil Operator | Dec 2024 |
| 4 | Barton Oil & Gas Co., Inc. | | Oil & Gas Operator | Sep 1993 |
| 5 | Bean Resources, Inc | | Oil & Gas Operator | Aug 2006 |
| 6 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 7 | Belco Operating Corp. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 8 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Feb 2026 |
| 9 | Boca Production Inc | | Oil & Gas Operator | Jun 2002 |
| 10 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2025 |
| 11 | BP Exploration Inc | | Oil & Gas Operator | May 1993 |
| 12 | Bridwell Oil Management, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 13 | Bridwell Oil MGMT Of Al, LLC | | Oil & Gas Operator | Apr 2006 |
| 14 | Bristol Exploration, Inc. | | Oil & Gas Operator | Jul 1991 |
| 15 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 16 | Britlind Oil LLC | | Oil & Gas Operator | Dec 2020 |
| 17 | Bronco Energy | | Oil & Gas Operator | Oct 1983 |
| 18 | Brown & McKenzie, Inc. | | Oil & Gas Operator | May 1984 |
| 19 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2026 |
| 20 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |