| 1 | B & S Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Jun 2025 |
| 2 | B K L Incorporated | Morton, TX 79346 | Oil & Gas Operator | Jun 2002 |
| 3 | Balco Energy Corporation | | Oil & Gas Operator | Jul 1983 |
| 4 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 5 | Basf Corporation | Houston, TX 77027 | Oil & Gas Operator | Nov 1992 |
| 6 | Baxter Drill. & Explor., Inc. | | Oil Operator | Jun 1997 |
| 7 | Bayou Choctaw, Inc. | | Oil & Gas Operator | Jun 2004 |
| 8 | Bayou Sorrel Oil LLC | | Oil & Gas Operator | May 2015 |
| 9 | Beusa Energy, Inc. | Spring, TX 77380 | Oil & Gas Operator | Apr 2011 |
| 10 | Beusa Energy, LLC | | Oil & Gas Operator | Nov 2017 |
| 11 | Bintliff Props. LTD. PRTNRSHP. | | Oil & Gas Operator | Dec 1987 |
| 12 | Bligh Petroleum, Inc. | | Oil & Gas Operator | Jun 2004 |
| 13 | Blocker Exploration Company | | Oil & Gas Operator | Apr 1983 |
| 14 | Blue Mill Farms, Inc. | | Oil & Gas Operator | Apr 1992 |
| 15 | BPR Energy, Inc. | | Oil & Gas Operator | Apr 2021 |
| 16 | Bridas Energy USA, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Aug 2008 |
| 17 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 18 | Brock Exploration Corporation | New Orleans, LA 70112-1707 | Oil & Gas Operator | Jan 1999 |
| 19 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 20 | Burkhart Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2002 |
| 21 | Burrite Operating, LLC | | Oil Operator | Dec 2024 |