| 2301 | Buck Creek Associates | Bartlesville, OK 74006 | Oil & Gas Operator | May 2013 |
| 2302 | Buck Creek Associates LLC | Bartlesville, OK 74005-2091 | Oil Operator | Sep 2009 |
| 2303 | Buck Creek Freight Inc | Lusk, WY 82225 | Oil Operator | Jun 2025 |
| 2304 | Buck Enterprises LLC | Oklahoma City, OK 73150-6111 | Oil Operator | Apr 2025 |
| 2305 | Buck Exploration | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 1991 |
| 2306 | Buck Management Co. L.L.C. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jul 2025 |
| 2307 | Buck Paul J | | Oil & Gas Operator | Feb 1995 |
| 2308 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 2309 | Buck Production Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2025 |
| 2310 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Jul 2025 |
| 2311 | Buck, George | Laredo, TX 78041 | Oil & Gas Operator | Aug 2003 |
| 2312 | Buck, Paul Jordan | Sedan, KS 67361 | Oil & Gas Operator | Mar 2025 |
| 2313 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 2314 | Buckeye Crude Expl Inc | Columbus, OH 43216-2671 | Oil & Gas Operator | Dec 1987 |
| 2315 | Buckeye Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2018 |
| 2316 | Buckeye Energy Resources | Zanesville, OH 43702-1190 | Oil & Gas Operator | Dec 1995 |
| 2317 | Buckeye Franklin Co | Zoarville, OH 44656 | Oil & Gas Operator | Dec 1996 |
| 2318 | Buckeye Oil Producing Co. | Wooster, OH 44691-129 | Oil & Gas Operator | Dec 2024 |
| 2319 | Buckeye Petroleum Company, Inc | | Oil & Gas Operator | Apr 1983 |
| 2320 | Buckeye West, LLC | Wooster, OH 44691 | Oil Operator | Mar 2025 |
| 2321 | Buckhorn Oilfield Service Inc | Kilgore, TX 75663 | Oil Operator | Jul 2025 |
| 2322 | Buckhorn Operating LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Jul 2025 |
| 2323 | Buckhorn Petroleum | | Oil & Gas Operator | Dec 1983 |
| 2324 | Buckley, Michael T. | Sweetgrass, MT 59484 | Oil & Gas Operator | Feb 2025 |
| 2325 | Bucky LTD | | Oil Operator | Dec 2020 |
| 2326 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Jul 2025 |
| 2327 | Bud'S Drilling Company, Inc. | Brookshire, TX 77423 | Oil & Gas Operator | Jul 2025 |
| 2328 | Bud'S Oil Company Inc. | Sperry, OK 74073 | Oil & Gas Operator | Dec 2025 |
| 2329 | Bud'S Pumping Service Inc. | | Oil Operator | Dec 1997 |
| 2330 | Buddie Sallee | Humboldt, KS 66748 | Oil Operator | Dec 2002 |
| 2331 | Buffalo Oil & Gas LLC | Oxford, KS 67119 | Oil & Gas Operator | Mar 2025 |
| 2332 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Jul 2025 |
| 2333 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 2334 | Buffalo Properties LLC | | Oil & Gas Operator | Dec 2003 |
| 2335 | Buffalo Raider Consulting, LLC | Amarillo, TX 79119 | Oil & Gas Operator | Jul 2025 |
| 2336 | Buffalo Resources Co. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2000 |
| 2337 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | May 2025 |
| 2338 | Buffalo Tournament Club, Inc. | Lancaster, NY 14086 | Gas Operator | Dec 2024 |
| 2339 | Buffalo Xxii Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 2340 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2025 |
| 2341 | Buford Oil, Inc | | Oil & Gas Operator | Dec 2010 |
| 2342 | Bugington Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2018 |
| 2343 | Bulinski Richard | Wetumka, OK 74883-0056 | Oil & Gas Operator | Jan 2004 |
| 2344 | Bull Dog Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 2345 | Bull Oil Company, LLC | Livingston, TX 77351 | Oil & Gas Operator | Jul 2025 |
| 2346 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Jul 2025 |
| 2347 | Bull Ring Energy LLC | Oklahoma City, OK 73118 | Gas Operator | Apr 2025 |
| 2348 | Bull Run Energy LLC | Warren, PA 16365-2215 | Oil & Gas Operator | Dec 2017 |
| 2349 | Bull Run Resources LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2024 |
| 2350 | Bullard Bros Production Co Inc | Comanche, OK 73529-0637 | Oil Operator | Mar 2015 |
| 2351 | Bullard Don W | Ardmore, OK 73401-3646 | Oil & Gas Operator | Dec 2019 |
| 2352 | Bullard Oil Company LLC | Tuttle, OK 73089-8375 | Oil Operator | Aug 2024 |
| 2353 | Bullards Oilfield Service Inc | Ardmore, OK 73401-3646 | Oil Operator | Sep 1999 |
| 2354 | Bulldog Disposal Inc | Laverne, OK 73848 | Oil Operator | Apr 2014 |
| 2355 | Bulldog Exploration, LP | Houston, TX 77090 | Oil & Gas Operator | Apr 2011 |
| 2356 | Bulldog Operating Company | Artesia, NM 88211 | Oil & Gas Operator | Jan 2014 |
| 2357 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 2358 | Bulldog Production Inc | Seminole, OK 74868 | Oil Operator | Nov 2024 |
| 2359 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Jul 2025 |
| 2360 | Bullin, R. E. Operating Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jul 2025 |
| 2361 | Bullin, R.E. | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 2362 | Bullitt Energy LLC | Marietta, OH 45750-5317 | Oil & Gas Operator | Dec 2023 |
| 2363 | Bullitt Oil | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2016 |
| 2364 | Bullock A O | Casper, WY 82604 | Oil & Gas Operator | May 2025 |
| 2365 | Bullock Gladys C Trust | | Oil & Gas Operator | Dec 1999 |
| 2366 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 2367 | Bullseye Operating LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Apr 2025 |
| 2368 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 2369 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Mar 2025 |
| 2370 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 2371 | Bummer Bruce L | Casper, WY 82602 | Oil & Gas Operator | Dec 2007 |
| 2372 | Bump, Derek M. And Karrie L. | Batavia, NY 14020 | Gas Operator | Dec 2024 |
| 2373 | Bunker Oil Corp. | | Oil & Gas Operator | Dec 1994 |
| 2374 | Bunkirt J J Oil & Gas Corporation | Powell, WY 82435 | Oil & Gas Operator | Jun 2025 |
| 2375 | Buntin Ronnie | Maramec, OK 74045-4500 | Oil & Gas Operator | Sep 2019 |
| 2376 | Bunyard Jerry L | Stroud, OK 74079 | Oil & Gas Operator | Oct 2024 |
| 2377 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 2378 | Burchett Natural Gas, Inc. | Williamson, WV 25661 | Gas Operator | Dec 2016 |
| 2379 | Burchfield Lawrence & VIrginia | Morris, OK 74445-2814 | Gas Operator | Aug 2018 |
| 2380 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | Apr 2025 |
| 2381 | Burdett, Alfred | Sedan, KS 67361 | Oil Operator | Aug 2008 |
| 2382 | Burdette & Wilma A Sedler | Girard, PA 16417-9102 | Gas Operator | Dec 2014 |
| 2383 | Burdette Robert S | Pomeroy, OH 45769 | Oil Operator | Dec 2024 |
| 2384 | Burdette, L W Etal LLC | Parkersburg, WV 26102-1485 | Oil & Gas Operator | Dec 2021 |
| 2385 | Burdick, Jeffery H | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 2386 | Burgard, Harold H. | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 2387 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 2388 | Burger, Ken | Pampa, TX 79065 | Oil & Gas Operator | Jul 2025 |
| 2389 | Burgess D M Jr And Hall H E And Stinson D E | | Oil Operator | May 2000 |
| 2390 | Burgess Energy, Inc. | South Bend, TX 76481 | Oil & Gas Operator | Jul 2025 |
| 2391 | Burgess Hall Stinson Inc | | Oil Operator | Dec 2009 |
| 2392 | Burgess, Sim E. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 2393 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Jul 2025 |
| 2394 | Burgly Gas & Oil Co Inc | Apollo, PA 15613-0015 | Gas Operator | Dec 2024 |
| 2395 | Burgundy Oil & Gas Of N M Inc | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 2396 | Burgundy Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 2397 | Buried Hills Prod. Co., Inc. | Midvale, UT 84047 | Oil Operator | Dec 2006 |
| 2398 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 2399 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 2400 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |