| 2401 | Buck Enterprises LLC | Oklahoma City, OK 73150-6111 | Oil Operator | Nov 2025 |
| 2402 | Buck Exploration | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 1991 |
| 2403 | Buck Management Co. L.L.C. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Feb 2026 |
| 2404 | Buck Paul J | | Oil & Gas Operator | Feb 1995 |
| 2405 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 2406 | Buck Production Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 2407 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Feb 2026 |
| 2408 | Buck, George | Laredo, TX 78041 | Oil & Gas Operator | Aug 2003 |
| 2409 | Buck, Paul Jordan | Sedan, KS 67361 | Oil & Gas Operator | Sep 2025 |
| 2410 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 2411 | Buckeye Crude Expl Inc | Columbus, OH 43216-2671 | Oil & Gas Operator | Dec 1987 |
| 2412 | Buckeye Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2018 |
| 2413 | Buckeye Energy Resources | Zanesville, OH 43702-1190 | Oil & Gas Operator | Dec 1995 |
| 2414 | Buckeye Franklin Co | Zoarville, OH 44656 | Oil & Gas Operator | Dec 1996 |
| 2415 | Buckeye Knoll Farm | Lakewood, OH 44107 | Oil & Gas Operator | Dec 1991 |
| 2416 | Buckeye Oil Producing Co. | Wooster, OH 44691-129 | Oil & Gas Operator | Dec 2024 |
| 2417 | Buckeye Petroleum Company, Inc | | Oil & Gas Operator | Apr 1983 |
| 2418 | Buckeye West LLC | Wooster, OH 44691 | Oil Operator | Sep 2025 |
| 2419 | Buckhorn Oilfield Service Inc | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 2420 | Buckhorn Operating LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Feb 2026 |
| 2421 | Buckhorn Petroleum | | Oil & Gas Operator | Dec 1983 |
| 2422 | Buckingham Oil Company | Longview, TX 75606 | Oil & Gas Operator | Aug 2004 |
| 2423 | Buckley, Michael T. | Sweetgrass, MT 59484 | Oil & Gas Operator | Jul 2025 |
| 2424 | Bucky LTD | | Oil Operator | Dec 2020 |
| 2425 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Feb 2026 |
| 2426 | Bud'S Drilling Company, Inc. | Brookshire, TX 77423 | Oil & Gas Operator | Feb 2026 |
| 2427 | Bud'S Pumping Service Inc. | | Oil Operator | Dec 1997 |
| 2428 | Buddie Sallee | Humboldt, KS 66748 | Oil Operator | Dec 2002 |
| 2429 | Buds Oil Company | Sperry, OK 74073 | Oil & Gas Operator | Dec 2025 |
| 2430 | Buffalo Oil & Gas LLC | Oxford, KS 67119 | Oil & Gas Operator | Sep 2025 |
| 2431 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Feb 2026 |
| 2432 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 2433 | Buffalo Properties LLC | | Oil & Gas Operator | Dec 2003 |
| 2434 | Buffalo Raider Consulting, LLC | Amarillo, TX 79119 | Oil & Gas Operator | Feb 2026 |
| 2435 | Buffalo Resources Co. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2000 |
| 2436 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | Aug 2025 |
| 2437 | Buffalo Tournament Club, Inc. | Lancaster, NY 14086 | Gas Operator | Dec 2024 |
| 2438 | Buffalo Xxii Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 2439 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 2440 | Buffum & Baker Inc | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1998 |
| 2441 | Buford Oil, Inc | | Oil & Gas Operator | Dec 2010 |
| 2442 | Bugington Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2018 |
| 2443 | Buhler Michael J | Ridgway, PA 15853-5548 | Gas Operator | Dec 2015 |
| 2444 | Bulinski Richard | Wetumka, OK 74883-0056 | Oil & Gas Operator | Jan 2004 |
| 2445 | Bull Dog Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 2446 | Bull Oil Company, LLC | Livingston, TX 77351 | Oil & Gas Operator | Feb 2026 |
| 2447 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2026 |
| 2448 | Bull Ring Energy LLC | Oklahoma City, OK 73118 | Gas Operator | Nov 2025 |
| 2449 | Bull Run Energy LLC | Warren, PA 16365-2215 | Oil & Gas Operator | Dec 2017 |
| 2450 | Bull Run Resources LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2024 |
| 2451 | Bullard Bros Production Co Inc | Comanche, OK 73529-0637 | Oil Operator | Mar 2015 |
| 2452 | Bullard Co. | | Gas Operator | Nov 1990 |
| 2453 | Bullard Don W | Ardmore, OK 73401-3646 | Oil & Gas Operator | Dec 2019 |
| 2454 | Bullard Oil Company LLC | Tuttle, OK 73089-8375 | Oil Operator | Jul 2025 |
| 2455 | Bullards Oilfield Service Inc | Ardmore, OK 73401-3646 | Oil Operator | Sep 1999 |
| 2456 | Bulldog Disposal Inc | Laverne, OK 73848 | Oil Operator | Apr 2014 |
| 2457 | Bulldog Exploration Company | Houston, TX 77090 | Oil & Gas Operator | May 2005 |
| 2458 | Bulldog Exploration, LP | Houston, TX 77090 | Oil & Gas Operator | Apr 2011 |
| 2459 | Bulldog Operating Company | Artesia, NM 88211 | Oil & Gas Operator | Feb 2026 |
| 2460 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 2461 | Bulldog Production Inc | Seminole, OK 74868 | Oil Operator | Nov 2024 |
| 2462 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 2463 | Bullin, R. E. Operating Inc. | Levelland, TX 79336 | Oil & Gas Operator | Feb 2026 |
| 2464 | Bullin, R.E. | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 2465 | Bullitt Energy LLC | Marietta, OH 45750-5317 | Oil & Gas Operator | Dec 2024 |
| 2466 | Bullitt Oil | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2016 |
| 2467 | Bullock A O | Casper, WY 82604 | Oil & Gas Operator | Sep 2025 |
| 2468 | Bullock Gladys C Trust | | Oil & Gas Operator | Dec 1999 |
| 2469 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 2470 | Bullseye Operating LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Nov 2025 |
| 2471 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 2472 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Aug 2025 |
| 2473 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 2474 | Bummer Bruce L | Casper, WY 82602 | Oil & Gas Operator | Dec 2007 |
| 2475 | Bump, Derek M. And Karrie L. | Batavia, NY 14020 | Gas Operator | Dec 2024 |
| 2476 | Bumper Development Corp LTD | Calgary, AB T2P 3 | Gas Operator | Dec 1991 |
| 2477 | Bunker Oil Corp. | | Oil & Gas Operator | Dec 1994 |
| 2478 | Bunkirt J J Oil & Gas Corporation | Powell, WY 82435 | Oil & Gas Operator | Jan 2026 |
| 2479 | Buntin Ronnie | Maramec, OK 74045-4500 | Oil & Gas Operator | Sep 2019 |
| 2480 | Bunyard Jerry L | Stroud, OK 74079 | Oil & Gas Operator | Oct 2024 |
| 2481 | Buonadonna Oil LLC | Luling, TX 78648 | Oil Operator | Feb 2026 |
| 2482 | Buray Energy International LLC | Evansville, IN 47711-5369 | Gas Operator | Jun 2013 |
| 2483 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 2484 | Burch Exploration, Inc. | Parker, CO 80134 | Gas Operator | Apr 1996 |
| 2485 | Burchett Natural Gas, Inc. | Williamson, WV 25661 | Gas Operator | Dec 2016 |
| 2486 | Burchfield Lawrence & VIrginia | Morris, OK 74445-2814 | Gas Operator | Aug 2018 |
| 2487 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | Nov 2025 |
| 2488 | Burdett, Alfred | Sedan, KS 67361 | Oil Operator | Aug 2008 |
| 2489 | Burdette & Wilma A Sedler | Girard, PA 16417-9102 | Gas Operator | Dec 2014 |
| 2490 | Burdette Robert S | Pomeroy, OH 45769 | Oil Operator | Dec 2024 |
| 2491 | Burdette, Everett W., Jr. | | Oil & Gas Operator | Dec 2008 |
| 2492 | Burdette, L W Etal LLC | Parkersburg, WV 26102-1485 | Oil & Gas Operator | Dec 2021 |
| 2493 | Burdick, Jeffery H | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 2494 | Burgard, Harold H. | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 2495 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 2496 | Burger, Ken | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 2497 | Burgess D M Jr And Hall H E And Stinson D E | | Oil Operator | May 2000 |
| 2498 | Burgess Energy, Inc. | South Bend, TX 76481 | Oil & Gas Operator | Feb 2026 |
| 2499 | Burgess Hall Stinson Inc | | Oil Operator | Dec 2009 |
| 2500 | Burgess, Sim E. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |