| 1 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Mar 2025 |
| 2 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Mar 2025 |
| 3 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 4 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 5 | Baytex Energy USA, Inc. | Houston, TX 77084 | Oil & Gas Operator | Mar 2025 |
| 6 | Beachtex Oil Company, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Mar 2025 |
| 7 | Bellows Operating Co., L. C. | Goliad, TX 77963 | Oil & Gas Operator | Mar 2025 |
| 8 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Feb 2025 |
| 9 | Beta Oil Corporation | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2025 |
| 10 | Big Wells Energy Corp | Katy, TX 77494 | Oil & Gas Operator | Sep 2019 |
| 11 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 12 | Black Gold Operating Co, LLC | Plntersville, TX 77363 | Oil & Gas Operator | Mar 2025 |
| 13 | Black Mountain STX I LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 14 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 15 | Blackbrush O & G, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2012 |
| 16 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Mar 2025 |
| 17 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Mar 2025 |
| 18 | Bommer Engineering Co. | San Antonio, TX 78260 | Oil & Gas Operator | Mar 2025 |
| 19 | Botasch Operating, LLC | Dilley, TX 78017 | Oil & Gas Operator | Mar 2025 |
| 20 | BP Products North America Inc | Chicago, IL 60606 | Gas Operator | Jan 2017 |
| 21 | Brahman Oil & Gas, LLC | Houston, TX 77063 | Oil & Gas Operator | Mar 2025 |
| 22 | Bronco Z Production | San Antonio, TX 78217 | Oil & Gas Operator | Jul 1998 |
| 23 | Brymer Contracting Incorporated | Pleasanton, TX 78064 | Oil & Gas Operator | Mar 2025 |
| 24 | Brymer, Jack Contr. Serv. | George West, TX 78022 | Oil Operator | Mar 2025 |
| 25 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Mar 2025 |
| 26 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 27 | Bush, Mark A. Oil And Gas Inc. | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |