| 1 | B & B Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Jun 2025 |
| 2 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Oct 2025 |
| 3 | B & S Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Jun 2025 |
| 4 | B M Oil, Inc. | | Oil & Gas Operator | May 2019 |
| 5 | B-B Production | Ira, TX 79527 | Oil & Gas Operator | Oct 2025 |
| 6 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 7 | Baham Energy Services, LLC | | Oil Operator | Dec 2024 |
| 8 | Ball Marketing, Inc. | | Oil & Gas Operator | Sep 1999 |
| 9 | Barton Oil & Gas Co., Inc. | | Oil & Gas Operator | Sep 1993 |
| 10 | Baruch-Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 11 | Basf Corporation | Houston, TX 77027 | Oil & Gas Operator | Nov 1992 |
| 12 | Basin Petroleum, Inc. | | Oil & Gas Operator | Jul 1995 |
| 13 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 14 | BBH Operating Company | | Oil & Gas Operator | Feb 1986 |
| 15 | Bel Oil Corporation | Jenks, OK 74037 | Oil & Gas Operator | Jun 2005 |
| 16 | Beta Operating, Inc | | Oil & Gas Operator | May 2001 |
| 17 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 18 | BKV Ventures, LLC | | Oil & Gas Operator | Nov 2020 |
| 19 | Black Pool Energy, LP | Houston, TX 77070 | Oil & Gas Operator | Jul 2024 |
| 20 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Oct 2025 |
| 21 | Block T Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 22 | Booher Energy, LLC | | Oil Operator | Dec 2024 |
| 23 | Booher Engineering, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Oct 2025 |
| 24 | Borden, Inc. | Columbus, OH 43215 | Oil & Gas Operator | May 1990 |
| 25 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 26 | Bradco Oil & Gas Company | | Oil & Gas Operator | Dec 1980 |
| 27 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 28 | Bridwell Oil Management, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 29 | Britlind Oil LLC | | Oil & Gas Operator | Dec 2020 |
| 30 | Brown & McKenzie, Inc. | | Oil & Gas Operator | May 1984 |
| 31 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 32 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 33 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Oct 2025 |