| 1 | B & G Energy Corporation | Dallas, TX 75214 | Oil & Gas Operator | May 2024 |
| 2 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | May 2024 |
| 3 | B D Production Co., Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2024 |
| 4 | Bagley, Roy | Magnolia, TX 77354 | Oil & Gas Operator | May 2024 |
| 5 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 6 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 7 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | May 2024 |
| 8 | Baytex USA Development, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2017 |
| 9 | BB-Southtex, LLC | San Antonio, TX 78259 | Oil & Gas Operator | May 2024 |
| 10 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 11 | Beachtex Oil Company, LLC | San Antonio, TX 78257 | Oil & Gas Operator | May 2024 |
| 12 | Beckham Resources, Inc. | Houston, TX 77010 | Oil & Gas Operator | Mar 2011 |
| 13 | Bellows Operating Co., L. C. | Goliad, TX 77963 | Oil & Gas Operator | May 2024 |
| 14 | Bellows, Dewey Oper. Co., LTD. | Refugio, TX 78377 | Oil & Gas Operator | Jul 2013 |
| 15 | Bellows, Richard | Three Rivers, TX 78071 | Oil & Gas Operator | Nov 2008 |
| 16 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 17 | Bexco Operating, Inc. | College Sta, TX 77845 | Oil & Gas Operator | May 2024 |
| 18 | BHP Billiton Pet(Txla Op) Co | Denver, CO 80202 | Oil & Gas Operator | Jul 2019 |
| 19 | Bishop Petroleum Inc. | Houston, TX 77007 | Oil & Gas Operator | May 2024 |
| 20 | Bison Energy Partners, Inc. | Houston, TX 77060 | Oil & Gas Operator | Sep 2001 |
| 21 | Bissell Operating LLC | San Antonio, TX 78216 | Oil Operator | Oct 2016 |
| 22 | Blackbrush O & G, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2012 |
| 23 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2024 |
| 24 | Bluebonnet Oil & Gas | Three Rivers, TX 78071 | Oil & Gas Operator | May 2024 |
| 25 | Bluejay Energy Corporation | Waxahachie, TX 75168 | Oil Operator | Feb 2008 |
| 26 | Bluestone Natural Resources, LLC | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2015 |
| 27 | BNP Petroleum Corporation | Corpus Chrsti, TX 78478 | Oil & Gas Operator | May 2024 |
| 28 | Bommer Engineering Co. | San Antonio, TX 78260 | Oil & Gas Operator | May 2024 |
| 29 | Botasch Operating, LLC | Dilley, TX 78017 | Oil & Gas Operator | May 2024 |
| 30 | Boundary Ventures, Inc. | Columbus, TX 78934 | Oil Operator | May 2024 |
| 31 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 32 | BPL Exploration, LTD. | Corpus Chrsti, TX 78418 | Oil & Gas Operator | Jan 2012 |
| 33 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | May 2024 |
| 34 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 35 | Brander, Sam H. | San Antonio, TX 78264 | Oil & Gas Operator | May 2024 |
| 36 | Brayton Operating Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Sep 2009 |
| 37 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2024 |
| 38 | Breitburn Operating, LP | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 39 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 40 | Bridge Oil Production Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1993 |
| 41 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2024 |
| 42 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 43 | Britanco, L.L.C. | Falls City, TX 78113 | Oil & Gas Operator | May 2024 |
| 44 | Brown, C. Douglas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2005 |
| 45 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 46 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
| 47 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 48 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | May 2024 |
| 49 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 50 | BXP Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | May 2024 |
| 51 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | May 2024 |