| 10301 | Five D Co | Cactus, TX 79013 | Oil & Gas Operator | Sep 1996 |
| 10302 | Five K Partnership | Graham, TX 76450 | Oil & Gas Operator | Oct 2023 |
| 10303 | Five Star Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Feb 2025 |
| 10304 | Five State Energy Co | Dallas, TX 75206 | Oil & Gas Operator | Oct 1995 |
| 10305 | Five States Energy Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 10306 | Five States Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Feb 2008 |
| 10307 | Five States Operating Company LLC | Dallas, TX 75206 | Oil & Gas Operator | Apr 2025 |
| 10308 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Jun 2025 |
| 10309 | Fiveash Operating Company, Inc. | Christoval, TX 76935 | Oil & Gas Operator | Aug 2003 |
| 10310 | Fivestones Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 10311 | FJH Oil Company | Muenster, TX 76252 | Oil & Gas Operator | Jun 2025 |
| 10312 | Fjo Energy, LLC | Fairhope, AL 36532 | Oil Operator | Jun 2025 |
| 10313 | Flag DRLG Co, Inc | Greenville, KY 42345 | Oil & Gas Operator | Dec 2021 |
| 10314 | Flag Energy, LLC | Centerton, AR 72719 | Oil & Gas Operator | Nov 2018 |
| 10315 | Flag Transport Inc | Shattuck, OK 73858-0848 | Oil Operator | Dec 2014 |
| 10316 | Flag-Redfern Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Jul 2002 |
| 10317 | Flagin Operating LLC | Norman, OK 73072-2405 | Oil & Gas Operator | Mar 2025 |
| 10318 | Flahive Oil & Gas LLC | Golden, CO 80401 | Oil Operator | Oct 1995 |
| 10319 | Flairtex Resources, Inc. | Houston, TX 77040 | Oil & Gas Operator | Oct 1998 |
| 10320 | Flame Energy Co Inc | Dalton, OH 44618 | Oil & Gas Operator | Dec 2006 |
| 10321 | Flamingo Oil & Gas | Luling, TX 78648 | Oil & Gas Operator | Jun 2025 |
| 10322 | Flamingo Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Jun 2025 |
| 10323 | Flanagan Energy Company LLC | Walters, OK 73572 | Oil Operator | Feb 2025 |
| 10324 | Flanigan Bros | Edinboro, PA 16412-1443 | Oil & Gas Operator | Dec 2024 |
| 10325 | Flare Oil Inc | Rockport, TX 78382 | Oil & Gas Operator | Jun 2025 |
| 10326 | Flare Resources Inc. | Houston, TX 77002 | Gas Operator | Jun 2006 |
| 10327 | Flare, Inc. | | Oil & Gas Operator | Jul 1995 |
| 10328 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 10329 | Flash Gas & Oil Southwest, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Oct 2019 |
| 10330 | Flash Gas & Oil, Inc. | | Oil & Gas Operator | May 1991 |
| 10331 | Flat Creek Operating Co. | Rockwall, TX 75087 | Oil & Gas Operator | Jun 2004 |
| 10332 | Flat Creek Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 10333 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2025 |
| 10334 | Flatirons Development LLC | Westminster, CO 80020-2771 | Gas Operator | Dec 2015 |
| 10335 | Flatirons Resources LLC | Westminster, CO 80021 | Oil & Gas Operator | Dec 2022 |
| 10336 | Flatland Energy, LLC | Gardner, KS 66030 | Oil Operator | Dec 2024 |
| 10337 | Flatland Oil Com | | Oil Operator | Sep 1985 |
| 10338 | Flatlander Energy LLC | Blackwell, OK 74631 | Oil & Gas Operator | Feb 2025 |
| 10339 | Flatlander Petroleum LLC | | Oil & Gas Operator | Feb 2025 |
| 10340 | Flatonia Energy, LLC | Dallas, TX 75201 | Oil & Gas Operator | Jun 2025 |
| 10341 | Flatrock Energy Co | | Oil & Gas Operator | May 2017 |
| 10342 | Flatt Energy Inc | | Oil & Gas Operator | Sep 2019 |
| 10343 | Flatwater Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 10344 | Flavian Oil Company | Dallas, TX 75206 | Gas Operator | Jan 1997 |
| 10345 | Fleeharty Willie W | | Oil & Gas Operator | Jun 1991 |
| 10346 | Fleeman Teresa R | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2024 |
| 10347 | Fleet Frank T | Ada, OK 74821-0729 | Oil & Gas Operator | Feb 2003 |
| 10348 | Fleet Oil Co. | | Oil & Gas Operator | Dec 1991 |
| 10349 | Fleetwood K Phil Oil Properties | Marlow, OK 73055 | Oil & Gas Operator | Mar 2025 |
| 10350 | Fletcher Oil LLC | Ratliff City, OK 73481 | Oil & Gas Operator | Apr 2025 |
| 10351 | Fletcher Operating Co. | | Oil & Gas Operator | May 1989 |
| 10352 | Fletcher Operating, LLC | Fairhope, AL 36532 | Oil & Gas Operator | Jun 2025 |
| 10353 | Fletcher Petroleum Corp. | Fairhope, AL 36533 | Oil & Gas Operator | Apr 2025 |
| 10354 | Fletcher, M. D. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2007 |
| 10355 | Fleur David Corp | | Gas Operator | Jul 2001 |
| 10356 | Flex Energy, L.L.C. | | Oil & Gas Operator | Feb 2010 |
| 10357 | Flicka Energy Inc | Crescent, OK 73028 | Oil & Gas Operator | Mar 2022 |
| 10358 | Flint Douglas J | Mounds, OK 74047-5415 | Oil & Gas Operator | Sep 2015 |
| 10359 | Flint Hills Production Co., Inc. | Gas City, KS 66742 | Oil Operator | Nov 2009 |
| 10360 | Flint Interests, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2025 |
| 10361 | Flint J A & Associates | Holdenville, OK 74848 | Oil & Gas Operator | Sep 2009 |
| 10362 | Flint Oak Energy, LLC | Montgomery, TX 77356 | Oil & Gas Operator | Jun 2025 |
| 10363 | Flint Oil & Gas | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 10364 | Flint Pipeline Company | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2025 |
| 10365 | Flint Rock Resources MGMNT, Inc. | Austin, TX 78734 | Oil & Gas Operator | Jun 2025 |
| 10366 | Flint, Billy Individual | Merkel, TX 79536 | Oil & Gas Operator | Jun 2025 |
| 10367 | Flintstone Energy, LLC | El Dorado, KS 67042 | Oil Operator | Jun 2020 |
| 10368 | Flo A & P Inc. | Seminole, TX 79360 | Oil & Gas Operator | Feb 2024 |
| 10369 | Flo Petro, LLC. | Austin, TX 78746 | Oil Operator | Jun 2025 |
| 10370 | Floex Energy LLC | Tyler, TX 75701 | Oil Operator | Jun 2025 |
| 10371 | Flood Thirty Seven LLC | Dewey, OK 74029 | Oil Operator | Mar 2025 |
| 10372 | Flora B Shinnick | | Oil Operator | Jan 2025 |
| 10373 | Flora Resources | | Oil Operator | Oct 2024 |
| 10374 | Florabama Assoc Inc | | Oil & Gas Operator | Jan 2000 |
| 10375 | Florentine Exploration & Production, Inc. | | Oil Operator | Mar 1997 |
| 10376 | Flores & Rucks, Inc. | | Oil & Gas Operator | Jun 1997 |
| 10377 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 10378 | Florida Gas Exploration Co | | Oil & Gas Operator | Feb 1985 |
| 10379 | Florida Gas Transmission Co. | | Oil Operator | Dec 2007 |
| 10380 | Florine, Inc. | Gypsum, KS 67448 | Oil Operator | Oct 2024 |
| 10381 | Flourison Oil & Gas, LLC | | Oil Operator | Jan 2025 |
| 10382 | Flournoy Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 10383 | Flournoy Production Co. | Alice, TX 78333 | Oil & Gas Operator | Dec 2002 |
| 10384 | Flournoy, Russell B. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2020 |
| 10385 | Flow Energy Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1996 |
| 10386 | Flow Production Company | Midland, TX 79708 | Oil & Gas Operator | Mar 2005 |
| 10387 | Flowers Prod Com | | Oil Operator | Aug 1994 |
| 10388 | Flowers Production Co., Inc. | El Dorado, KS 67042 | Oil Operator | Jul 2009 |
| 10389 | Flowers Well Ser | | Oil Operator | Feb 1991 |
| 10390 | Flowin Gold Inc | Sapulpa, OK 74066-9735 | Oil & Gas Operator | Apr 2020 |
| 10391 | Floyd & Alene Jenner | | Oil & Gas Operator | Dec 2003 |
| 10392 | Floyd Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 10393 | Floyd Operating Company | Houston, TX 77002 | Oil & Gas Operator | Jul 2004 |
| 10394 | Floyd Ray Porter | | Oil & Gas Operator | Nov 1986 |
| 10395 | Floyd Williams | | Oil Operator | Aug 1988 |
| 10396 | Floyd, Timber Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 10397 | Flud Richard | Okmulgee, OK 74447 | Oil & Gas Operator | Mar 2015 |
| 10398 | Fluharty Enterprises Inc | Bridgeport, WV 25338 | Oil & Gas Operator | Oct 2021 |
| 10399 | Fluid Disposal Services LLC | Chickasha, OK 73018-9684 | Oil Operator | Aug 2015 |
| 10400 | Fluor Oil & Gas Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2019 |