| 1 | B.W.O.C., Inc. | Plano, TX 75026 | Oil & Gas Operator | Oct 2025 |
| 2 | Balance Production Corporation | Temple, TX 76503 | Oil & Gas Operator | Oct 2025 |
| 3 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 4 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |
| 5 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 6 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 7 | Bechtel Energy Resources Corp. | Houston, TX 77210 | Oil & Gas Operator | Jun 1996 |
| 8 | Beehive Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 9 | Bell & Kinley Company | Piedmont, OK 73078 | Oil & Gas Operator | Aug 2017 |
| 10 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 11 | Berkshire Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 12 | Berkshire Woodlawn Field, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2007 |
| 13 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 14 | Blackwell Operating Company | Houston, TX 77227 | Oil & Gas Operator | Jun 2007 |
| 15 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 16 | Blue Star Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 17 | Bowles Energy, Inc. | Longview, TX 75601 | Oil & Gas Operator | Oct 2025 |
| 18 | Bozeman, John F. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2005 |
| 19 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 20 | Bralex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Oct 2025 |
| 21 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 22 | Brandon Energy, Inc. | Bullard, TX 75757 | Oil & Gas Operator | Nov 2007 |
| 23 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 24 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 25 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 26 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |
| 27 | Brooks Petroleum Inc | Kilgore, TX 75663 | Oil & Gas Operator | May 1999 |
| 28 | Brothers Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2004 |
| 29 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 30 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 31 | Bryant & Carr, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1994 |
| 32 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 33 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Oct 2025 |
| 34 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Oct 2025 |
| 35 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 36 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |