| 1 | Bachtell Oil & Gas, LTD. | Longview, TX 75605 | Oil & Gas Operator | Oct 2025 |
| 2 | Bachtell, Charles Ray | Longview, TX 75605 | Oil & Gas Operator | Feb 2004 |
| 3 | Bahr Oil & Gas | Shalimar, FL 32579 | Oil & Gas Operator | Oct 2025 |
| 4 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Jun 2025 |
| 5 | Baron Energy Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Oct 2025 |
| 6 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |
| 7 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 8 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Oct 2025 |
| 9 | Bateman'S Bay Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Jun 2025 |
| 10 | Benco Operating, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 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 | Berry Oil Comp. | Houston, TX 77002 | Oil & Gas Operator | Jul 2014 |
| 14 | Berry Oil Company, LLC | Bakersfield, CA 93311 | Oil & Gas Operator | Apr 2019 |
| 15 | Berry Petroleum Company LLC | Bakersfield, CA 93311 | Oil & Gas Operator | Aug 2025 |
| 16 | BHP Billiton Pet(Txla Op) Co | Denver, CO 80202 | Oil & Gas Operator | Jul 2019 |
| 17 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 18 | Bishop Petroleum Inc. | Houston, TX 77007 | Oil & Gas Operator | Oct 2025 |
| 19 | Bitz, M. J. Company | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 2003 |
| 20 | BKM Production | Gainesville, TX 76240 | Oil & Gas Operator | Oct 2025 |
| 21 | Blair Oil Company | Kingfisher, OK 73750-1213 | Oil & Gas Operator | Jun 2025 |
| 22 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Oct 2025 |
| 23 | Blue Dome Operating, LLC | Tulsa, OK 74119 | Gas Operator | Oct 2025 |
| 24 | Bowles Energy, Inc. | Longview, TX 75601 | Oil & Gas Operator | Oct 2025 |
| 25 | Bowles Properties, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 1998 |
| 26 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 27 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 28 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 29 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 30 | Brammer-Keystone Energy, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 31 | Brandon Energy, Inc. | Bullard, TX 75757 | Oil & Gas Operator | Nov 2007 |
| 32 | Brangus Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 33 | Brannon Oil & Gas Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2013 |
| 34 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 35 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 36 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 37 | Brian Energy | Kilgore, TX 75663 | Oil & Gas Operator | May 2013 |
| 38 | Brian Energy, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2020 |
| 39 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 40 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |
| 41 | Brookston Energy, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Oct 2025 |
| 42 | Brothers Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2004 |
| 43 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 44 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 45 | Brown, J. Burns Operating Co. | Havre, MT 59501 | Oil & Gas Operator | Jul 2025 |
| 46 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Oct 2025 |
| 47 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |