| 1 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 2 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2025 |
| 3 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Mar 2025 |
| 4 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Mar 2025 |
| 5 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 6 | Bee-Jay Energy | Whiteface, TX 79379 | Oil & Gas Operator | Nov 1993 |
| 7 | Benco Energy Inc | Tionesta, PA 16353-5851 | Oil & Gas Operator | Dec 2002 |
| 8 | BHB Operating Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Mar 2025 |
| 9 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 10 | Bishop Petroleum Inc. | Houston, TX 77007 | Oil & Gas Operator | Mar 2025 |
| 11 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 12 | Blue Star Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 13 | Bomar Oil & Gas, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2020 |
| 14 | Bowman, Fred Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2014 |
| 15 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 16 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 17 | Brandon Energy, Inc. | Bullard, TX 75757 | Oil & Gas Operator | Nov 2007 |
| 18 | Brannon Oil & Gas Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2013 |
| 19 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 20 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 21 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 22 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 23 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 24 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 25 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Mar 2025 |
| 26 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 27 | Broughton Operating Corp. | Pittsburgh, PA 15219 | Oil & Gas Operator | Nov 2000 |
| 28 | Brown Oil & Gas Co. | Mexia, TX 76667 | Oil & Gas Operator | Mar 2025 |
| 29 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 30 | Brown, Geo. R Partnership,LP,The | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 31 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 32 | Bryant & Carr, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1994 |
| 33 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 34 | Burgundy Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 35 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2025 |
| 36 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |