| 1 | Baber Well Servicing Co. | Hobbs, NM 88240 | Oil & Gas Operator | May 1995 |
| 2 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Mar 2025 |
| 3 | Basin Oil & Gas Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2025 |
| 4 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 5 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 6 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 7 | Bay Tan Operating, LP | Odessa, TX 79765 | Oil & Gas Operator | Mar 2025 |
| 8 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 9 | BCP Resources, LLC | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 10 | Beach Oil & Gas, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Mar 2025 |
| 11 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 12 | Bennett, M. Brad Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2005 |
| 13 | Bennett, M. Brad LP | Midland, TX 79710 | Oil & Gas Operator | Jan 2006 |
| 14 | Berry, O. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 15 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 16 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 17 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 18 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 19 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2025 |
| 20 | Blair, Jack N. | Midland, TX 79702 | Oil & Gas Operator | May 1996 |
| 21 | Bledsoe Partners, Inc. | Oklahoma City, OK 73120 | Oil & Gas Operator | Mar 1995 |
| 22 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 23 | Bosque Texas Oil LLC | Houston, TX 77024 | Oil & Gas Operator | Mar 2025 |
| 24 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 25 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 26 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Mar 2025 |
| 27 | BP Products North America Inc | Chicago, IL 60606 | Gas Operator | Jan 2017 |
| 28 | Bralex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Mar 2025 |
| 29 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 30 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 31 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 32 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 33 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2025 |
| 34 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 35 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 36 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 37 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 38 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 2025 |
| 39 | BRP Energy, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Mar 2025 |
| 40 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 41 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 42 | Bugington Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2018 |
| 43 | Burkholder, Terry L., Inc. | Pecos, TX 79772 | Oil & Gas Operator | Mar 2002 |
| 44 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 45 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 46 | Butler, C. D. | Grandfalls, TX 79742 | Oil & Gas Operator | Dec 2004 |
| 47 | Butler, Kevin O. & Assoc., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |