| 1 | B & B Oil, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Jun 2025 |
| 2 | B & G Energy Corporation | Dallas, TX 75214 | Oil & Gas Operator | Jun 2025 |
| 3 | Bahr Oil & Gas | Shalimar, FL 32579 | Oil & Gas Operator | Jun 2025 |
| 4 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Jan 2025 |
| 5 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 6 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Jun 2025 |
| 7 | BBHP Oilfield Services LLC | Kilgore, TX 75662 | Oil Operator | Jun 2025 |
| 8 | Beckville Disp Operations, LLC | Henderson, TX 75652 | Oil Operator | Jun 2025 |
| 9 | Berry, Thomas N. & Co. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2012 |
| 10 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2025 |
| 11 | BKM Production | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2025 |
| 12 | Black Diamond Operating Co., LLC | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2009 |
| 13 | Black Jack Services, L.L.C. | Bastrop, TX 78602 | Oil & Gas Operator | Jun 2025 |
| 14 | Bonanza Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Apr 2000 |
| 15 | Bond Operating Company | Dallas, TX 75219 | Oil & Gas Operator | Jan 2025 |
| 16 | Bowles Energy, Inc. | Longview, TX 75601 | Oil & Gas Operator | Jun 2025 |
| 17 | Bowles Properties, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 1998 |
| 18 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 19 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Jun 2025 |
| 20 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 21 | Bracken Production Company | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 22 | Brammer-Keystone Energy, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 23 | Brashear Production Service, Inc | Longview, TX 75602 | Oil & Gas Operator | Mar 2008 |
| 24 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 25 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 26 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 27 | Brian Energy | Kilgore, TX 75663 | Oil & Gas Operator | May 2013 |
| 28 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2025 |
| 29 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Jun 2025 |
| 30 | Brothers Oil & Equipment, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2025 |
| 31 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 32 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 33 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 34 | Buccaneer Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2025 |
| 35 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2025 |
| 36 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2025 |
| 37 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 38 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Jun 2025 |
| 39 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 40 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |