| 1 | B-K Operating | Whitesboro, TX 76273 | Oil & Gas Operator | Oct 1997 |
| 2 | B.R.H. Investments, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 1998 |
| 3 | Banam Corporation | Midland, TX 79702 | Oil & Gas Operator | Nov 2013 |
| 4 | Bara Corporation | Flower Mound, TX 75027 | Oil & Gas Operator | Apr 2004 |
| 5 | Barbee, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 6 | Barnett Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 1999 |
| 7 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 8 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 9 | Bentgrass Of Texas, Inc. | Abilene, TX 79608 | Oil Operator | Apr 2026 |
| 10 | Bentley Oil & Gas Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 11 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 12 | Bexco Operating, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Apr 2026 |
| 13 | Big Al Oil And Gas | Abilene, TX 79608 | Oil & Gas Operator | Apr 2026 |
| 14 | Black Oil Company, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 15 | Bloomer & Associates, Inc. | Lago VIsta, TX 78645 | Oil & Gas Operator | Jul 2002 |
| 16 | Bo Dunagin Operating, LLC | Merkel, TX 79536 | Oil Operator | Mar 2019 |
| 17 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 18 | Bootstrap Exploration, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Jun 2021 |
| 19 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 20 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 21 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Apr 2026 |
| 22 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 23 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 24 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 25 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 26 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 27 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 28 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 29 | Brittany Drilling Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2000 |
| 30 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 31 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2026 |
| 32 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 33 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 34 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 35 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2026 |
| 36 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2026 |
| 37 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 38 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2026 |
| 39 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 40 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Apr 2026 |
| 41 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 42 | Burns, Bill C. | Midland, TX 79701 | Oil & Gas Operator | Dec 1997 |
| 43 | Burns, P. C. Oil Producers Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2000 |
| 44 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 45 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Apr 2026 |
| 46 | Byrne Oil Company | Lubbock, TX 79464 | Oil & Gas Operator | Apr 2026 |