| 1 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 2 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 3 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 4 | Big Lake Corporation | Dallas, TX 75222 | Oil & Gas Operator | Sep 2026 |
| 5 | Bishop Petroleum Inc. | Houston, TX 77007 | Oil & Gas Operator | Sep 2026 |
| 6 | Black Water Environmental L.L.C. | Texas City, TX 77590 | Oil Operator | Sep 2026 |
| 7 | Blue Ridge Operating Company,Inc | Ashland, OR 97520 | Oil & Gas Operator | Oct 1998 |
| 8 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2026 |
| 9 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Sep 2026 |
| 10 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 11 | Bridge Oil Production Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1993 |
| 12 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 13 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 14 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 15 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |