| 1 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 2 | Batson Ent Ventures L.L.C. | Batson, TX 77519 | Oil Operator | Jul 2025 |
| 3 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 4 | Beckham Resources, Inc. | Houston, TX 77010 | Oil & Gas Operator | Mar 2011 |
| 5 | Bet-Ro, Inc. | Rockdale, TX 76567 | Oil & Gas Operator | Jul 2025 |
| 6 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 7 | BHB Operating Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Jul 2025 |
| 8 | Black Belt Operating, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 9 | Black Creek Production Co., Inc. | Driftwood, TX 78619 | Oil & Gas Operator | Feb 2000 |
| 10 | Black Stone Energy Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2004 |
| 11 | Black Stone Energy Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 12 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Jul 2025 |
| 13 | BLS Resources, Inc. | Rosharon, TX 77583 | Oil & Gas Operator | Feb 2001 |
| 14 | Blue Owl Energy LLC | Canada, 00100 | Oil Operator | Jul 2025 |
| 15 | Bock & Bacon, Inc. | Houston, TX 77098 | Oil & Gas Operator | May 1999 |
| 16 | Boothe Oil Company | Batson, TX 77519 | Oil & Gas Operator | Feb 2014 |
| 17 | Bowman, Fred Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2014 |
| 18 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 19 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2025 |
| 20 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 21 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |
| 22 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 23 | Brown, Al A. | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 24 | Brown, Buddy | Livingston, TX 77351 | Oil & Gas Operator | Jul 2025 |
| 25 | Brown, C. L. Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1999 |
| 26 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 27 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Jul 2025 |