| 2501 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |
| 2502 | Buttonwood Petro | | Oil & Gas Operator | Aug 1994 |
| 2503 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 2504 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 2505 | Buttram Operating Company LLC | Heath, TX 75032-1931 | Oil & Gas Operator | Apr 2025 |
| 2506 | Buxton Energy LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Apr 2014 |
| 2507 | Buxton Fred M | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Feb 2007 |
| 2508 | BVD Inc | Yates Center, KS 66783-0194 | Oil & Gas Operator | Apr 2025 |
| 2509 | BVX Operating, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Jun 2025 |
| 2510 | BW Oil LLC | Hamel, MN 55340 | Oil Operator | Jun 2015 |
| 2511 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
| 2512 | BWB Resources Inc | Colorado Springs, CO 80908-7204 | Oil & Gas Operator | Jan 2016 |
| 2513 | BWC Energy LLC | Edgerton, KS 66021 | Oil Operator | Feb 2025 |
| 2514 | BXP Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2025 |
| 2515 | Byargeon & Sons Oil Co. | | Oil Operator | Nov 2000 |
| 2516 | Byars Bill Inc | Okmulgee, OK 74447-0850 | Oil & Gas Operator | Apr 2015 |
| 2517 | Byers Clarice An | | Oil Operator | Nov 1988 |
| 2518 | Byers, R.D. | Vernon, TX 76384 | Oil & Gas Operator | Feb 1998 |
| 2519 | Bykowicz, Francis J. | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 2520 | Byler Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 2521 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Jun 2025 |
| 2522 | Byng Operating LLC | Ada, OK 74820-0677 | Oil & Gas Operator | Mar 2025 |
| 2523 | Bynum Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2003 |
| 2524 | Byrd Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 2525 | Byrne Oil Company | Lubbock, TX 79424 | Oil & Gas Operator | Jun 2025 |
| 2526 | Byrne, Robert E. | Lubbock, TX 79416 | Oil & Gas Operator | Jan 2005 |
| 2527 | Byron Oil Industries Inc | Ballwin, MO 63011 | Oil & Gas Operator | Apr 2019 |
| 2528 | Byron Ruple | | Oil Operator | Jan 2025 |
| 2529 | Bytex Oil Company | Midland, TX 79708 | Oil & Gas Operator | Jan 2019 |