| 2501 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Feb 2026 |
| 2502 | Burgly Gas & Oil Co Inc | Apollo, PA 15613-0015 | Gas Operator | Dec 2025 |
| 2503 | Burgundy Oil & Gas Of N M Inc | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 2504 | Burgundy Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 2505 | Buried Hills Prod. Co., Inc. | Midvale, UT 84047 | Oil Operator | Dec 2006 |
| 2506 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 2507 | Burk Lease | Cherryvale, KS 67335 | Oil & Gas Operator | Mar 1994 |
| 2508 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 2509 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 2510 | Burk, H. V. | Fort Worth, TX 76101 | Oil & Gas Operator | Jan 2006 |
| 2511 | Burk-Gunn Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2018 |
| 2512 | Burkan Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | Dec 1995 |
| 2513 | Burkard Petroleum Company | Houston, TX 77056 | Oil & Gas Operator | May 2003 |
| 2514 | Burke Michael | Coolsville, OH 45723 | Oil & Gas Operator | Dec 2024 |
| 2515 | Burke, Harry Petroleum | Houston, TX 77080 | Oil & Gas Operator | Nov 2024 |
| 2516 | Burkett Drilling | Sunray, TX 79086 | Oil Operator | Feb 2026 |
| 2517 | Burkett, J. D. | Archer City, TX 76351 | Oil & Gas Operator | Mar 1994 |
| 2518 | Burkhart Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2002 |
| 2519 | Burkholder, Terry L., Inc. | Pecos, TX 79772 | Oil & Gas Operator | Mar 2002 |
| 2520 | Burkland William S | Ligonier, PA 15658-0467 | Oil & Gas Operator | Dec 2010 |
| 2521 | Burleson Oil Company | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 2522 | Burleson Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 2523 | Burleson Production LLC | Frederick, OK 73542 | Oil & Gas Operator | Dec 2025 |
| 2524 | Burleson, Jackie A. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2003 |
| 2525 | Burleson, Lewis B. Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2010 |
| 2526 | Burlingame Oil, LLC | Olean, NY 14760 | Oil & Gas Operator | Dec 2024 |
| 2527 | Burlington Oil Company | Ponca City, OK 74602-1304 | Oil & Gas Operator | May 2007 |
| 2528 | Burlington Res O & G Co-McCamey | Midland, TX 79702 | Oil Operator | Mar 2002 |
| 2529 | Burlington Res O & G Co-Midland | Houston, TX 77252 | Oil & Gas Operator | Mar 2020 |
| 2530 | Burlington Res O&G Co-Permian | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 2531 | Burlington Res Offshore Inc | | Oil & Gas Operator | Oct 2002 |
| 2532 | Burlington Res Oil & Gas Co | | Oil & Gas Operator | Dec 2000 |
| 2533 | Burlington Res Oil & Gas LP | | Oil & Gas Operator | Mar 2013 |
| 2534 | Burlington Res.Oil&Gas Co.LP | Midland, TX 79710-1810 | Gas Operator | Dec 2007 |
| 2535 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 2536 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |
| 2537 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Feb 2026 |
| 2538 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 2539 | Burmaster, Gary | Sheridan, NY 14135 | Gas Operator | Dec 2024 |
| 2540 | Burness, William Steele Jr | Glasgow, KY 42142 | Oil Operator | Dec 2022 |
| 2541 | Burnett Corp. | Amarillo, TX 79105 | Oil & Gas Operator | May 1998 |
| 2542 | Burnett Corporat | | Oil & Gas Operator | Oct 1993 |
| 2543 | Burnett Energy Inc. | | Oil & Gas Operator | Dec 2025 |
| 2544 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 2545 | Burnham & Browning DRLG Co. | | Oil Operator | Oct 1990 |
| 2546 | Burns Eugene | Davis, OK 73030-3112 | Oil Operator | Mar 2006 |
| 2547 | Burns Oil & Gas Expl. | | Oil & Gas Operator | Jan 1985 |
| 2548 | Burns Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2002 |
| 2549 | Burns Operating LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2009 |
| 2550 | Burns Production Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2008 |
| 2551 | Burns Willard & Frances | Corning, OH 43730 | Oil & Gas Operator | Dec 2020 |
| 2552 | Burns WM J | | Oil Operator | Jun 1994 |
| 2553 | Burns, Bill C. | Midland, TX 79701 | Oil & Gas Operator | Dec 1997 |
| 2554 | Burns, Gene Oil & Gas | Odessa, TX 79765 | Oil & Gas Operator | Dec 2020 |
| 2555 | Burns, P. C. Oil Producers Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2000 |
| 2556 | Burnsed Oil Co., Inc. | | Oil & Gas Operator | Nov 2025 |
| 2557 | Burr Oil & Gas | Farmington, NM 87499 | Oil & Gas Operator | Feb 2000 |
| 2558 | Burr Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Oct 2019 |
| 2559 | Burrill Oil | | Oil Operator | Aug 1990 |
| 2560 | Burris Energy LLC | Burlington, KS 66839 | Oil & Gas Operator | Sep 2016 |
| 2561 | Burris Ronald/Si | | Oil Operator | Jun 1992 |
| 2562 | Burris Run Company | | Gas Operator | Sep 1993 |
| 2563 | Burris, J. R. | Manhattan, KS 66502 | Oil Operator | Dec 2019 |
| 2564 | Burrite Operating, LLC | | Oil Operator | Dec 2024 |
| 2565 | Burro Bluff Corporation | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 2566 | Burrows Alfred | Copan, OK 74022 | Oil & Gas Operator | May 2021 |
| 2567 | Burrows, Dewey | | Oil & Gas Operator | Nov 2025 |
| 2568 | Burskey David M | Carrolltown, PA 15722-0480 | Oil & Gas Operator | Dec 2025 |
| 2569 | Burt Esther M | Sperry, OK 74073 | Oil Operator | Apr 2025 |
| 2570 | Burt James & Charles Maybee | Sperry, OK 74073-8001 | Oil & Gas Operator | Nov 2014 |
| 2571 | Burtco | Lubbock, TX 79407 | Oil & Gas Operator | Feb 2026 |
| 2572 | Burton Cecil Et | | Oil & Gas Operator | Sep 1983 |
| 2573 | Burton Oil Produ | | Oil Operator | Jan 1985 |
| 2574 | Burton Oil Properties | Ratliff City, OK 73081 | Oil & Gas Operator | Nov 2025 |
| 2575 | Burton Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 2576 | Burton, V.C. Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2016 |
| 2577 | Burton-Sutton Oil Co., Inc. | | Oil & Gas Operator | Apr 1988 |
| 2578 | Burton/Hawks Inc | Casper, WY 82602 | Oil & Gas Operator | Sep 1993 |
| 2579 | Busch, W. H. | | Gas Operator | Dec 2005 |
| 2580 | Busey Naman | Elmore City, OK 73433-9583 | Oil & Gas Operator | Nov 2025 |
| 2581 | Bush Operating | Archer City, TX 76351 | Oil & Gas Operator | Feb 2026 |
| 2582 | Bush, Mark A. Oil And Gas Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 2583 | Bushmaster Production Company, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 2584 | Bushwood Leasing, LLC | | Oil Operator | Dec 2024 |
| 2585 | Buss, Timothy A. & Kimberly A. | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 2586 | Bussey, Joe F. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 2587 | Bustamante Oil Company | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 2588 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 2589 | Busted Knuckle Oil & Gas LLC | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2024 |
| 2590 | Butcher Energy Corp | Newark, OH 43055 | Oil & Gas Operator | Dec 2014 |
| 2591 | Butkin Oil Company | Duncan, OK 73534-2090 | Oil & Gas Operator | Sep 2021 |
| 2592 | Butkin Oil Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Mar 2023 |
| 2593 | Butler & Harbison | Olney, TX 76374 | Oil & Gas Operator | Oct 2005 |
| 2594 | Butler & Haseloff | Vernon, TX 76384 | Oil Operator | Jul 1993 |
| 2595 | Butler B F | Hobart, OK 73651 | Oil Operator | Apr 2014 |
| 2596 | Butler County Flood, Inc | Santa Monica, CA 90409 | Oil Operator | Dec 2015 |
| 2597 | Butler Larry | Bladensburg, OH 43005 | Oil & Gas Operator | Dec 2019 |
| 2598 | Butler Oil Co | Casper, WY 82602 | Oil & Gas Operator | Dec 1996 |
| 2599 | Butler Petroleum Corp | Norman, OK 73069-7111 | Oil & Gas Operator | Dec 1998 |
| 2600 | Butler Petroleum LLC | Van Alstyne, TX 75495 | Oil Operator | May 2020 |