| 501 | Bunyard Jerry L | Stroud, OK 74079 | Oil & Gas Operator | Oct 2024 |
| 502 | Buray Energy International LLC | Evansville, IN 47711-5369 | Gas Operator | Jun 2013 |
| 503 | Burchfield Lawrence & VIrginia | Morris, OK 74445-2814 | Gas Operator | Aug 2018 |
| 504 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | Oct 2025 |
| 505 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 506 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 507 | Burkan Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | Dec 1995 |
| 508 | Burkhart Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2002 |
| 509 | Burleson Production LLC | Frederick, OK 73542 | Oil & Gas Operator | Oct 2025 |
| 510 | Burlington Oil Company | Ponca City, OK 74602-1304 | Oil & Gas Operator | May 2007 |
| 511 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Feb 2026 |
| 512 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 513 | Burns Eugene | Davis, OK 73030-3112 | Oil Operator | Mar 2006 |
| 514 | Burrows Alfred | Copan, OK 74022 | Oil & Gas Operator | May 2021 |
| 515 | Burrows, Dewey | | Oil & Gas Operator | Oct 2025 |
| 516 | Burt Esther M | Sperry, OK 74073 | Oil Operator | Apr 2025 |
| 517 | Burt James & Charles Maybee | Sperry, OK 74073-8001 | Oil & Gas Operator | Nov 2014 |
| 518 | Burton Oil Properties | Ratliff City, OK 73081 | Oil & Gas Operator | Oct 2025 |
| 519 | Busey Naman | Elmore City, OK 73433-9583 | Oil & Gas Operator | Nov 2025 |
| 520 | Butkin Oil Company | Duncan, OK 73534-2090 | Oil & Gas Operator | Sep 2021 |
| 521 | Butkin Oil Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Mar 2023 |
| 522 | Butler & Haseloff | Vernon, TX 76384 | Oil Operator | Jul 1993 |
| 523 | Butler B F | Hobart, OK 73651 | Oil Operator | Apr 2014 |
| 524 | Butler Petroleum Corp | Norman, OK 73069-7111 | Oil & Gas Operator | Dec 1998 |
| 525 | Butler Petroleum LLC | Van Alstyne, TX 75495 | Oil Operator | May 2020 |
| 526 | Butler, Cecil D | | Oil & Gas Operator | Oct 2025 |
| 527 | Butte Oil And Gas Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 528 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |
| 529 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 530 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 531 | Buttram Operating Company LLC | Heath, TX 75032-1931 | Oil & Gas Operator | Sep 2025 |
| 532 | Buxton Energy LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Apr 2014 |
| 533 | Buxton Fred M | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Feb 2007 |
| 534 | BVD Inc | Yates Center, KS 66783-0194 | Oil & Gas Operator | Nov 2025 |
| 535 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
| 536 | BWB Resources Inc | Colorado Springs, CO 80908-7204 | Oil & Gas Operator | Jan 2016 |
| 537 | Byars Bill Inc | Okmulgee, OK 74447-0850 | Oil & Gas Operator | Apr 2015 |
| 538 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Feb 2026 |
| 539 | Byng Operating LLC | Ada, OK 74820-0677 | Oil & Gas Operator | Oct 2025 |