| 1 | B. J. P. Operating | Luling, TX 78648 | Oil & Gas Operator | Apr 2024 |
| 2 | Baker, Brent Oil & Gas, Inc. | Oklahoma City, OK 73149 | Oil & Gas Operator | Apr 2024 |
| 3 | Barnes Exploration Co. | Nashville, TN 37209 | Oil & Gas Operator | Feb 1995 |
| 4 | Barnett Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 5 | Barnhart Co LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 6 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 7 | Baron Energy Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Apr 2024 |
| 8 | Bastrop Energy Group | San Antonio, TX 78231 | Oil & Gas Operator | Apr 2024 |
| 9 | Battlecat Oil & Gas, LLC | Houston, TX 77082 | Oil & Gas Operator | Jul 2017 |
| 10 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 11 | Baytex Energy USA, Inc. | Houston, TX 77084 | Oil & Gas Operator | Apr 2024 |
| 12 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 13 | Bedford Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Apr 2024 |
| 14 | Bellows Operating Co., L. C. | Goliad, TX 77963 | Oil & Gas Operator | Apr 2024 |
| 15 | Bellows, Dewey Oper. Co., LTD. | Refugio, TX 78377 | Oil & Gas Operator | Jul 2013 |
| 16 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 17 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Feb 2024 |
| 18 | Bex, Inc. | Nashville, TN 37209 | Oil & Gas Operator | Aug 2007 |
| 19 | Big Wells Energy Corp | Katy, TX 77494 | Oil & Gas Operator | Sep 2019 |
| 20 | Black Jack Services, L.L.C. | Bastrop, TX 78602 | Oil & Gas Operator | Apr 2024 |
| 21 | Blackbrush O & G, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2012 |
| 22 | Blake Oil & Gas Corporation | Midland, TX 79701 | Oil & Gas Operator | May 2004 |
| 23 | Blanco Oil Company | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2010 |
| 24 | Bledsoe, R.K. Trust Oil Operator | Jourdanton, TX 78026 | Oil & Gas Operator | Apr 2024 |
| 25 | Bommer Engineering Co. | San Antonio, TX 78260 | Oil & Gas Operator | Apr 2024 |
| 26 | Boundary Ventures, Inc. | Columbus, TX 78934 | Oil Operator | Apr 2024 |
| 27 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 28 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Apr 2024 |
| 29 | BP Products North America Inc | Houston, TX 77094 | Gas Operator | Jan 2017 |
| 30 | Brayton Oil Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Dec 1994 |
| 31 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 32 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 33 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 34 | Brothers Oil & Equipment, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 35 | Brown, C. Douglas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2005 |
| 36 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2024 |
| 37 | Bruington Operating, L.L.C. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2015 |
| 38 | Bse Production Co. | Victoria, TX 77903 | Oil & Gas Operator | Apr 2024 |
| 39 | Bulldog Exploration, LP | Houston, TX 77090 | Oil & Gas Operator | Apr 2011 |
| 40 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 41 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 42 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Apr 2024 |
| 43 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 44 | BXP Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Apr 2024 |
| 45 | Byrd Operating Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |