| 1 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2025 |
| 2 | Barnes, Larry Petroleum, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Jul 1996 |
| 3 | Barnett Energy, Inc. | The Colony, TX 75056 | Oil & Gas Operator | Oct 2025 |
| 4 | Barrett Brothers Oil & Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2020 |
| 5 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Oct 2025 |
| 6 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 7 | Bataa Oil Inc | Arvada, CO 80005 | Oil & Gas Operator | Aug 2025 |
| 8 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 9 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 10 | Bel Oil Corporation | Jenks, OK 74037 | Oil & Gas Operator | Jun 2005 |
| 11 | Bell, Kelly Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 1995 |
| 12 | Bellows Operating Co., L. C. | Goliad, TX 77963 | Oil & Gas Operator | Oct 2025 |
| 13 | Bellows, Dewey Oper. Co., LTD. | Refugio, TX 78377 | Oil & Gas Operator | Jul 2013 |
| 14 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 15 | Bexco Operating, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Oct 2025 |
| 16 | Bison Energy Partners, Inc. | Houston, TX 77060 | Oil & Gas Operator | Sep 2001 |
| 17 | Bison Energy Partners, LTD. | Houston, TX 77060 | Oil & Gas Operator | Apr 2002 |
| 18 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 19 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Oct 2025 |
| 20 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | Oct 2025 |
| 21 | Bluestone Natural Res. II, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2019 |
| 22 | Bluestone Natural Resources, LLC | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2015 |
| 23 | BNP Petroleum Corporation | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Oct 2025 |
| 24 | BNR Operating, LLC | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 25 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 26 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 27 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 28 | Bridge Oil Production Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1993 |
| 29 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 30 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 31 | Brown, C. Douglas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2005 |
| 32 | Bruington Operating, L.L.C. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2015 |
| 33 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Oct 2025 |
| 34 | BXP Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Oct 2025 |