| 1 | Baby Oil, Inc. | | Oil & Gas Operator | Oct 2017 |
| 2 | Badger Energy LLC | | Oil & Gas Operator | Jul 2024 |
| 3 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 4 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 5 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 6 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 7 | Bay Coquille, Inc. | | Oil & Gas Operator | Jun 2023 |
| 8 | Bean Energy, Inc. | | Oil & Gas Operator | Dec 1986 |
| 9 | Bean Resources, Inc. | | Oil & Gas Operator | Aug 2006 |
| 10 | Bechtel Energy PTNR LTD PRTNRS | | Oil & Gas Operator | Jan 1996 |
| 11 | Bechtel Energy Resources Corp. | Houston, TX 77210 | Oil & Gas Operator | Jun 1996 |
| 12 | Beem Oil & Gas Company | | Oil & Gas Operator | Dec 1994 |
| 13 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 14 | Black Diamond Energy, LLC | | Oil & Gas Operator | Nov 2008 |
| 15 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Nov 2024 |
| 16 | Bois D'Arc Offshore LTD. | Houston, TX 77002 | Oil & Gas Operator | Aug 2008 |
| 17 | Bon Oil Company, Inc. | | Oil & Gas Operator | Nov 1993 |
| 18 | Borden, Inc. | Columbus, OH 43215 | Oil & Gas Operator | Mar 1990 |
| 19 | Bradco Oil & Gas Company | | Oil & Gas Operator | Dec 1980 |
| 20 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2024 |
| 21 | Brechtel Energy Corporation | | Oil & Gas Operator | Sep 2008 |
| 22 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 23 | Bridwell Oil Management, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2024 |
| 24 | Bridwell Oil MGMT Of Al, LLC | | Oil & Gas Operator | Apr 2006 |
| 25 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 26 | Brock Exploration Corporation | New Orleans, LA 70112-1707 | Oil & Gas Operator | Jan 1999 |
| 27 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 28 | Brooklyn Union Expl. Co., Inc. | | Oil & Gas Operator | Jul 1994 |
| 29 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2024 |
| 30 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 31 | Burlington Res Offshore Inc | | Oil & Gas Operator | Oct 2002 |
| 32 | Burlington Res Oil & Gas Co | | Oil & Gas Operator | Dec 2000 |
| 33 | Burlington Res Oil & Gas LP | Houston, TX 77079 | Oil & Gas Operator | Sep 2024 |