| 1 | Bahr Oil & Gas | Shalimar, FL 32579 | Oil & Gas Operator | Mar 2025 |
| 2 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 3 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2025 |
| 4 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 5 | Beehive Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 6 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 7 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 8 | Black Bayou Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2025 |
| 9 | Booher Engineering, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2025 |
| 10 | Borean Oil Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2013 |
| 11 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 12 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 13 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 14 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 15 | Brooks Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | Mar 2025 |
| 16 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Mar 2025 |
| 17 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 18 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 19 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 20 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 21 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2025 |