| 1 | B & G Energy Corporation | Dallas, TX 75214 | Oil & Gas Operator | Oct 2025 |
| 2 | B D Production Co., Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 3 | Baker Petroleum | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Oct 1999 |
| 4 | Bandera Exploration Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2017 |
| 5 | Barnes, Larry Petroleum, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Jul 1996 |
| 6 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Oct 2025 |
| 7 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 8 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | Oct 2025 |
| 9 | Bell, Kelly Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 1995 |
| 10 | Bellows Operating Co., L. C. | Goliad, TX 77963 | Oil & Gas Operator | Oct 2025 |
| 11 | Bellows, Dewey Oper. Co., LTD. | Refugio, TX 78377 | Oil & Gas Operator | Jul 2013 |
| 12 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 13 | Big Shell Oil & Gas, Inc. | Taft, TX 78390 | Oil & Gas Operator | Oct 2025 |
| 14 | Billington Oil & Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 15 | Bishop Petroleum Inc. | Houston, TX 77007 | Oil & Gas Operator | Oct 2025 |
| 16 | Bishop, J. E., Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2012 |
| 17 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | Oct 2025 |
| 18 | BNP Petroleum Corporation | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Oct 2025 |
| 19 | Boundary Ventures, Inc. | Columbus, TX 78934 | Oil Operator | Oct 2025 |
| 20 | Bounty Production Company | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2005 |
| 21 | Bowman, Fred Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2014 |
| 22 | Braman Working Interests LP | Victoria, TX 77902 | Oil & Gas Operator | Jun 2015 |
| 23 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 24 | Branch Productions | Graham, TX 76450 | Oil & Gas Operator | May 2019 |
| 25 | Brayton Oil Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Dec 1994 |
| 26 | Brayton Operating Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Sep 2009 |
| 27 | Brazos Resources, Inc. | College Sta, TX 77840 | Oil & Gas Operator | Dec 1998 |
| 28 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 29 | Bridge Oil Production Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1993 |
| 30 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 31 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 32 | Brinkerhoff, Bob | Houston, TX 77257 | Gas Operator | Feb 1994 |
| 33 | Britanco, L.L.C. | Falls City, TX 78113 | Oil & Gas Operator | Oct 2025 |
| 34 | Brown, Russell Operator, Inc. | Alice, TX 78333 | Oil & Gas Operator | Oct 2025 |
| 35 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Oct 2025 |
| 36 | Burgess Energy, Inc. | South Bend, TX 76481 | Oil & Gas Operator | Oct 2025 |