| 1 | B J Resources, L.L.C. | Athens, TX 75751 | Oil & Gas Operator | Jul 2025 |
| 2 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
| 3 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 4 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Jul 2025 |
| 5 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Jul 2025 |
| 6 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Jul 2025 |
| 7 | Beaver Oil & Gas Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 8 | Bell & Kinley Company | Piedmont, OK 73078 | Oil & Gas Operator | Aug 2017 |
| 9 | Bent Wing Energy, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 10 | Berkshire Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 11 | Berkshire Woodlawn Field, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2007 |
| 12 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 13 | BHP Billiton Pet(Txla Op) Co | Denver, CO 80202 | Oil & Gas Operator | Jul 2019 |
| 14 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 15 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Jul 2025 |
| 16 | Booher Engineering, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2025 |
| 17 | Bowles Energy, Inc. | Longview, TX 75601 | Oil & Gas Operator | Jul 2025 |
| 18 | Bowles Properties, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 1998 |
| 19 | Bowman, Fred Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2014 |
| 20 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 21 | Bralex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Jul 2025 |
| 22 | Brandon Energy, Inc. | Bullard, TX 75757 | Oil & Gas Operator | Nov 2007 |
| 23 | Brannon Oil & Gas Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2013 |
| 24 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 25 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 26 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 27 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 28 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Jul 2025 |
| 29 | Brothers Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2004 |
| 30 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 31 | Bryant & Carr, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1994 |
| 32 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 33 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2025 |
| 34 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 35 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 36 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 37 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Jul 2025 |