| 1 | B P Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 2007 |
| 2 | Barbee, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 3 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Oct 2025 |
| 4 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 5 | Bayou Operating Company, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Oct 2025 |
| 6 | Beach Oil & Gas, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Oct 2025 |
| 7 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 8 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 9 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 10 | Bitter Creek Petroleum Co. | Knox City, TX 79529 | Oil & Gas Operator | Oct 2025 |
| 11 | Bluff Creek Petroleum, LLC | Abilene, TX 79603 | Oil & Gas Operator | Oct 2025 |
| 12 | Bob & Ted'S Operating | Lewisville, TX 75067 | Oil & Gas Operator | Apr 1993 |
| 13 | Bootstrap Exploration, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Jun 2021 |
| 14 | Borden, Roland Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 15 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 16 | Borders, Delbert L. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2019 |
| 17 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 18 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 19 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Apr 2025 |
| 20 | Brandt, Bodie | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 2025 |
| 21 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 22 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 23 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 24 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 25 | Brittany Drilling Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2000 |
| 26 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 27 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 28 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 29 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |