| 4201 | Buffalo Oil & Gas LLC | Oxford, KS 67119 | Oil & Gas Operator | Dec 2024 |
| 4202 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Apr 2025 |
| 4203 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 4204 | Buffalo Properties LLC | | Oil & Gas Operator | Dec 2003 |
| 4205 | Buffalo Raider Consulting, LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 4206 | Buffalo Resources Co. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2000 |
| 4207 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | Dec 2024 |
| 4208 | Buffalo Tournament Club, Inc. | Lancaster, NY 14086 | Gas Operator | Dec 2023 |
| 4209 | Buffalo Xxii Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2025 |
| 4210 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2025 |
| 4211 | Buford Oil, Inc | | Oil & Gas Operator | Dec 2010 |
| 4212 | Bugington Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2018 |
| 4213 | Bulinski Richard | Wetumka, OK 74883-0056 | Oil & Gas Operator | Jan 2004 |
| 4214 | Bull Dog Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2023 |
| 4215 | Bull Oil Company, LLC | Livingston, TX 77351 | Oil & Gas Operator | Apr 2025 |
| 4216 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 4217 | Bull Ring Energy LLC | Oklahoma City, OK 73118 | Gas Operator | Jan 2025 |
| 4218 | Bull Run Energy LLC | Warren, PA 16365-2215 | Oil & Gas Operator | Dec 2017 |
| 4219 | Bull Run Resources LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2024 |
| 4220 | Bullard Bros Production Co Inc | Comanche, OK 73529-0637 | Oil Operator | Mar 2015 |
| 4221 | Bullard Co. | | Gas Operator | Nov 1990 |
| 4222 | Bullard Don W | Ardmore, OK 73401-3646 | Oil & Gas Operator | Dec 2019 |
| 4223 | Bullard Oil Company LLC | Tuttle, OK 73089-8375 | Oil Operator | Aug 2024 |
| 4224 | Bullards Oilfield Service Inc | Ardmore, OK 73401-3646 | Oil Operator | Sep 1999 |
| 4225 | Bulldog Disposal Inc | Laverne, OK 73848 | Oil Operator | Apr 2014 |
| 4226 | Bulldog Exploration, LP | Houston, TX 77090 | Oil & Gas Operator | Apr 2011 |
| 4227 | Bulldog Operating Company | Artesia, NM 88211 | Oil & Gas Operator | Jan 2014 |
| 4228 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 4229 | Bulldog Production Inc | Seminole, OK 74868 | Oil Operator | Nov 2024 |
| 4230 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Apr 2025 |
| 4231 | Bullin, R. E. Operating Inc. | Levelland, TX 79336 | Oil & Gas Operator | Apr 2025 |
| 4232 | Bullin, R.E. | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 4233 | Bullitt Energy LLC | Marietta, OH 45750-5317-5317 | Oil & Gas Operator | Dec 2023 |
| 4234 | Bullitt Oil | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2016 |
| 4235 | Bullock A O | Casper, WY 82604 | Oil & Gas Operator | Feb 2025 |
| 4236 | Bullock Gladys C Trust | | Oil & Gas Operator | Dec 1999 |
| 4237 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 4238 | Bullseye Operating LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Jan 2025 |
| 4239 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 4240 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Nov 2024 |
| 4241 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 4242 | Bummer Bruce L | Casper, WY 82602 | Oil & Gas Operator | Dec 2007 |
| 4243 | Bump, Derek M. And Karrie L. | Batavia, NY 14020 | Gas Operator | Dec 2023 |
| 4244 | Bunker Oil Corp. | | Oil & Gas Operator | Dec 1994 |
| 4245 | Bunkirt J J Oil & Gas Corporation | Powell, WY 82435 | Oil & Gas Operator | Feb 2025 |
| 4246 | Buntin Ronnie | Maramec, OK 74045-4500 | Oil & Gas Operator | Sep 2019 |
| 4247 | Bunyard Jerry L | Stroud, OK 74079 | Oil & Gas Operator | Oct 2024 |
| 4248 | Buray Energy International LLC | Evansville, IN 47711-5369 | Gas Operator | Jun 2013 |
| 4249 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 4250 | Burchett Natural Gas, Inc. | Williamson, WV 25661 | Gas Operator | Dec 2016 |
| 4251 | Burchfield Lawrence & VIrginia | Morris, OK 74445-2814 | Gas Operator | Aug 2018 |
| 4252 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | Jan 2025 |
| 4253 | Burdett, Alfred | Sedan, KS 67361 | Oil Operator | Aug 2008 |
| 4254 | Burdette & Wilma A Sedler | Girard, PA 16417-9102 | Gas Operator | Dec 2014 |
| 4255 | Burdette Robert S | Pomeroy, OH 45769 | Oil Operator | Dec 2023 |
| 4256 | Burdette, Everett W., Jr. | | Oil & Gas Operator | Dec 2008 |
| 4257 | Burdette, L W Etal LLC | Parkersburg, WV 26102-1485 | Oil & Gas Operator | Dec 2021 |
| 4258 | Burdick, Jeffery H | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2023 |
| 4259 | Burgard, Harold H. | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 4260 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 4261 | Burger, Ken | Pampa, TX 79065 | Oil & Gas Operator | Apr 2025 |
| 4262 | Burgess D M Jr And Hall H E And Stinson D E | | Oil Operator | May 2000 |
| 4263 | Burgess Energy, Inc. | South Bend, TX 76481 | Oil & Gas Operator | Apr 2025 |
| 4264 | Burgess Hall Stinson Inc | | Oil Operator | Dec 2009 |
| 4265 | Burgess, Sim E. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 4266 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2025 |
| 4267 | Burgly Gas & Oil Co Inc | Apollo, PA 15613-0015 | Gas Operator | Dec 2024 |
| 4268 | Burgundy Oil & Gas Of N M Inc | Midland, TX 79701 | Oil & Gas Operator | Feb 2025 |
| 4269 | Burgundy Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 4270 | Buried Hills Prod. Co., Inc. | Midvale, UT 84047 | Oil Operator | Dec 2006 |
| 4271 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 4272 | Burk Lease | Cherryvale, KS 67335 | Oil & Gas Operator | Mar 1994 |
| 4273 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 4274 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 4275 | Burk, H. V. | Fort Worth, TX 76101 | Oil & Gas Operator | Jan 2006 |
| 4276 | Burk-Gunn Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2018 |
| 4277 | Burkan Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | Dec 1995 |
| 4278 | Burkard Petroleum Company | Houston, TX 77056 | Oil & Gas Operator | May 2003 |
| 4279 | Burke Michael | Coolsville, OH 45723 | Oil & Gas Operator | Dec 2023 |
| 4280 | Burke, Harry Petroleum | Houston, TX 77080 | Oil & Gas Operator | Nov 2024 |
| 4281 | Burkett Drilling | Sunray, TX 79086 | Oil Operator | Apr 2025 |
| 4282 | Burkett, J. D. | Archer City, TX 76351 | Oil & Gas Operator | Mar 1994 |
| 4283 | Burkhart Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2002 |
| 4284 | Burkholder, Terry L., Inc. | Pecos, TX 79772 | Oil & Gas Operator | Mar 2002 |
| 4285 | Burkland William S | Ligonier, PA 15658-0467 | Oil & Gas Operator | Dec 2010 |
| 4286 | Burleson Oil Company | Burkburnett, TX 76354 | Oil Operator | Apr 2025 |
| 4287 | Burleson Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 4288 | Burleson, Jackie A. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2003 |
| 4289 | Burleson, Lewis B. Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2010 |
| 4290 | Burlingame Oil, LLC | Olean, NY 14760 | Oil & Gas Operator | Dec 2023 |
| 4291 | Burlington Oil Company | Ponca City, OK 74602-1304 | Oil & Gas Operator | May 2007 |
| 4292 | Burlington Res O & G Co-McCamey | Midland, TX 79702 | Oil Operator | Mar 2002 |
| 4293 | Burlington Res O & G Co-Midland | Houston, TX 77252 | Oil & Gas Operator | Mar 2020 |
| 4294 | Burlington Res O&G Co-Permian | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 4295 | Burlington Res Offshore Inc | | Oil & Gas Operator | Oct 2002 |
| 4296 | Burlington Res Oil & Gas Co | | Oil & Gas Operator | Dec 2000 |
| 4297 | Burlington Res Oil & Gas LP | Houston, TX 77079 | Oil & Gas Operator | Jan 2025 |
| 4298 | Burlington Res.Oil&Gas Co.LP | Midland, TX 79710-1810-1810 | Gas Operator | Dec 2007 |
| 4299 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 4300 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |