| 1 | B & B Oil, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Mar 2025 |
| 2 | B & S Production | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2009 |
| 3 | B M Energy, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2022 |
| 4 | B&L Operating Co. | Price, TX 75687 | Oil & Gas Operator | Mar 2025 |
| 5 | Bachtell Oil & Gas, LTD. | Longview, TX 75605 | Oil & Gas Operator | Mar 2025 |
| 6 | Bachtell, Charles Ray | Longview, TX 75605 | Oil & Gas Operator | Feb 2004 |
| 7 | Badger Energy, Inc. | Austin, TX 78714 | Oil & Gas Operator | Mar 2025 |
| 8 | Bahr Oil & Gas | Shalimar, FL 32579 | Oil & Gas Operator | Mar 2025 |
| 9 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Dec 2024 |
| 10 | Barber, B. S. | Kilgore, TX 75662 | Oil & Gas Operator | Nov 1998 |
| 11 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 12 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2025 |
| 13 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Mar 2025 |
| 14 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Mar 2025 |
| 15 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 16 | BBHP Oilfield Services LLC | Kilgore, TX 75662 | Oil Operator | Mar 2025 |
| 17 | Beckville Disp Operations, LLC | Henderson, TX 75652 | Oil Operator | Mar 2025 |
| 18 | Bell & Kinley Company | Piedmont, OK 73078 | Oil & Gas Operator | Aug 2017 |
| 19 | Below Ground Level LLC | Sand Springs, OK 74063 | Oil & Gas Operator | Mar 2025 |
| 20 | Berry, Thomas N. & Co. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2012 |
| 21 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 22 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 23 | Bigfoot Energy Services LLC | Carthage, TX 75633 | Oil & Gas Operator | Aug 2024 |
| 24 | BKM Production | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2025 |
| 25 | Black Diamond Operating Co., LLC | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2009 |
| 26 | Black Horse Resources, LLC | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2024 |
| 27 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Mar 2025 |
| 28 | Block T Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 29 | Bluegrass Energy Inc | Houston, TX 77057 | Oil & Gas Operator | Jan 2025 |
| 30 | Bluemark Energy LLC | Tulsa, OK 74120 | Oil & Gas Operator | Dec 2024 |
| 31 | Bowles Energy, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2025 |
| 32 | Bowles Properties, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 1998 |
| 33 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 34 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 35 | Bracken Production Company | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 36 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 37 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2025 |
| 38 | Brandon Energy, Inc. | Bullard, TX 75757 | Oil & Gas Operator | Nov 2007 |
| 39 | Branta Production Company LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2025 |
| 40 | Brashear Production Service, Inc | Longview, TX 75602 | Oil & Gas Operator | Mar 2008 |
| 41 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 42 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 43 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 44 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 45 | Brian Energy | Kilgore, TX 75663 | Oil & Gas Operator | May 2013 |
| 46 | Brothers Oil & Equipment, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 47 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 48 | Brothers Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2004 |
| 49 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 50 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 51 | Brown, J. Burns Operating Co. | Havre, MT 59501 | Oil & Gas Operator | Jan 2025 |
| 52 | Buccaneer Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 53 | Buckhorn Operating LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Mar 2025 |
| 54 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 55 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2025 |
| 56 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 57 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 58 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |