| 1 | B & B Oil, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Oct 2025 |
| 2 | Balance Production Corporation | Temple, TX 76503 | Oil & Gas Operator | Oct 2025 |
| 3 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 4 | Barbee, R.L. Operating, Inc. | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Oct 2025 |
| 5 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 6 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 7 | Bay-Tech Operating Co., Inc. | Tyler, TX 75713 | Oil & Gas Operator | Mar 2024 |
| 8 | BBC&D Enterprises, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2024 |
| 9 | Beacon Petroleum MGMT.,Inc. | Dallas, TX 75244 | Oil & Gas Operator | Mar 1997 |
| 10 | Benchmark Oil & Gas Co. | Houston, TX 77282 | Oil & Gas Operator | Oct 2025 |
| 11 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 12 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 13 | Black Diamond Operating Co., LLC | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2009 |
| 14 | Blakemore, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Dec 2012 |
| 15 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 16 | Bowles Energy, Inc. | Longview, TX 75601 | Oil & Gas Operator | Oct 2025 |
| 17 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 18 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 19 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 20 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 21 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 22 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 23 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 24 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 25 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |
| 26 | Brooks Petroleum Inc | Kilgore, TX 75663 | Oil & Gas Operator | May 1999 |
| 27 | Brothers Oil & Equipment, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 28 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 29 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 30 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 31 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 32 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Oct 2025 |
| 33 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 34 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 35 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |