| 10501 | Fork Run Oil & Gas LLC | Sheffield, PA 16347-0012 | Oil & Gas Operator | Dec 2024 |
| 10502 | Forman Exploration Company | | Oil & Gas Operator | Oct 1988 |
| 10503 | Forman Petroleum Corporation | | Oil & Gas Operator | Aug 2001 |
| 10504 | Formation Mechan | | Oil Operator | Dec 1986 |
| 10505 | Formation Recovery LLC | Weatherford, TX 76087 | Oil & Gas Operator | May 2025 |
| 10506 | Formation Resources LLC | Fort Worth, TX 76185 | Oil & Gas Operator | May 2025 |
| 10507 | Formax Oil Company | | Oil & Gas Operator | Dec 1993 |
| 10508 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | May 2025 |
| 10509 | Formor Operating Inc | Tyler, TX 75701 | Oil & Gas Operator | May 2013 |
| 10510 | Fornash Oil LLC | Waynesburg, OH 44688 | Oil & Gas Operator | Dec 2024 |
| 10511 | Forney & McCombs | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 10512 | Forney Oil Corporation | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 10513 | Forrest A Ward | Okmulgee, OK 74447-8891 | Oil & Gas Operator | Dec 2024 |
| 10514 | Forrest Energy, LLC | Hattiesburg, MS 39401 | Oil & Gas Operator | Feb 1998 |
| 10515 | Forrest Exploration & Dev, LLC | | Gas Operator | May 2003 |
| 10516 | Forrest Richard E | New Bethlehem, PA 16242-2547 | Gas Operator | Dec 2019 |
| 10517 | Forrest, Catherine M | | Oil & Gas Operator | Aug 2024 |
| 10518 | Forrestel II, E. Peter | Akron, NY 14001 | Gas Operator | Dec 2023 |
| 10519 | Forrester Oil & Gas Co. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 10520 | Forrester, J. L. | Longview, TX 75606 | Oil & Gas Operator | May 2025 |
| 10521 | Forsan Oil Company | Forsan, TX 79733 | Oil & Gas Operator | Jul 2008 |
| 10522 | Forster Oil Co. | | Oil & Gas Operator | Dec 2016 |
| 10523 | Forster, Fred Jr. | Midland, TX 79705 | Oil & Gas Operator | Aug 2008 |
| 10524 | Forsythe Lawana | Wilson, OK 73463 | Oil Operator | Mar 2020 |
| 10525 | Forsythe Trucking Inc | Wilson, OK 73463 | Oil & Gas Operator | Mar 2025 |
| 10526 | Fort Apache Energy, Inc. | Boerne, TX 78015 | Oil & Gas Operator | May 2025 |
| 10527 | Fort Exploration Company | FT Smith, AR 72901 | Gas Operator | May 2001 |
| 10528 | Fort Operating Company | Fort Smith, AR 72923 | Gas Operator | Nov 2018 |
| 10529 | Fort Scott Methane Partners, LCC | Denver, CO 80218 | Gas Operator | Dec 2014 |
| 10530 | Fort Worth Natural Gas, Inc. | Dallas, TX 75254 | Oil & Gas Operator | May 2025 |
| 10531 | Fort Worth Production Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 1996 |
| 10532 | Fortay Inc. | Sunray, TX 79086 | Oil & Gas Operator | May 2025 |
| 10533 | Forte Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Dec 2010 |
| 10534 | Forte Energy Corpration | Houston, TX 77024-1209 | Oil & Gas Operator | Jan 1995 |
| 10535 | Fortenberry Operating Co., Inc | | Oil & Gas Operator | Nov 2003 |
| 10536 | Fortenbery Drilling Co., Inc. | | Oil & Gas Operator | Oct 1979 |
| 10537 | Fortenbery Operating Co Inc | | Oil & Gas Operator | May 1993 |
| 10538 | Fortenbery Wade | | Oil & Gas Operator | May 1980 |
| 10539 | Fortitude Exploration Co | | Oil & Gas Operator | Sep 2024 |
| 10540 | Fortress Energy Corp | Pittsburgh, PA 15217-4207 | Oil & Gas Operator | Dec 2023 |
| 10541 | Fortson Oil | | Oil & Gas Operator | Jan 1998 |
| 10542 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 10543 | Fortuna Energy Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2014 |
| 10544 | Fortuna Exploration, Inc. | Abilene, TX 79602 | Oil & Gas Operator | May 2025 |
| 10545 | Fortuna Resources Dvlpment, LLC | Houston, TX 77055 | Oil & Gas Operator | May 2025 |
| 10546 | Fortune Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | May 2025 |
| 10547 | Fortune Gas & Oil | Shreveport, LA 71118-3457-3457 | Oil & Gas Operator | Dec 2002 |
| 10548 | Fortune Gas & Oil, Inc. | | Oil & Gas Operator | Apr 2004 |
| 10549 | Fortune Natural Resources Corp. | Houston, TX 77067 | Oil & Gas Operator | Dec 2003 |
| 10550 | Fortune Oil LTD | Salt Lake City, UT 84106 | Oil & Gas Operator | May 1987 |
| 10551 | Fortune Operating Company | Willis, TX 77378 | Oil & Gas Operator | May 2025 |
| 10552 | Fortune Operating, Inc. | Bowling Green, KY 42104 | Oil & Gas Operator | May 2025 |
| 10553 | Fortune Petroleum Corporation | | Oil & Gas Operator | Dec 1994 |
| 10554 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 10555 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | May 2025 |
| 10556 | Fortune-Shelby | | Oil & Gas Operator | Mar 1989 |
| 10557 | Fortune-Western | | Oil Operator | Dec 1989 |
| 10558 | Forty Acres Energy, LLC | Houston, TX 77079173 | Oil & Gas Operator | Mar 2025 |
| 10559 | Fortyfive Energy LLC | | Gas Operator | Mar 2025 |
| 10560 | Forum Exploration Co., L.P. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2010 |
| 10561 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2025 |
| 10562 | Foshee Operating, LLC | | Oil & Gas Operator | Jun 2004 |
| 10563 | Foss, Arthur & Ann | Corfu, NY 14036 | Gas Operator | Dec 2023 |
| 10564 | Foss, Craig J. | Alden, NY 14004 | Gas Operator | Dec 2023 |
| 10565 | Fossil Creek Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2025 |
| 10566 | Fossil Creek Energy, LLC | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 10567 | Fossil Creek Resources LLC | Arlington, TX 76011-5597 | Oil & Gas Operator | Mar 2015 |
| 10568 | Fossil Energy Inc | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 10569 | Fossil Energy, LLC | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 10570 | Fossil Fuel Inc | Dallas, TX BAD ADDR | Oil & Gas Operator | Dec 1998 |
| 10571 | Fossil Fuels Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2000 |
| 10572 | Fossil Operating, Inc. | Dallas, TX 75238 | Oil & Gas Operator | May 2025 |
| 10573 | Fossil Petroleum LLC | San Angelo, TX 76906 | Oil & Gas Operator | May 2025 |
| 10574 | Fossil Resources LLC | Hays, KS 67601 | Oil Operator | Jan 2025 |
| 10575 | Fossil Resources, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2017 |
| 10576 | Fossil Rock Resources, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | May 2016 |
| 10577 | Foster Energy Company | Tilden, TX 78072 | Oil & Gas Operator | Sep 2024 |
| 10578 | Foster Energy Group, LLC | Wolfforth, TX 79382 | Oil & Gas Operator | Mar 2025 |
| 10579 | Foster Gas Corporation | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2009 |
| 10580 | Foster Oil & Gas | Bartlesville, OK 74005 | Oil & Gas Operator | Mar 2014 |
| 10581 | Foster Oil LLC | | Oil Operator | Jan 2025 |
| 10582 | Foster Well Service, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 10583 | Foster, Charles R. Co. | Haskell, TX 79521 | Oil & Gas Operator | Aug 2002 |
| 10584 | Foster, Randy | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2021 |
| 10585 | Foster-Brown Operations, Inc. | | Oil & Gas Operator | Apr 2003 |
| 10586 | Foti Oil & Gas, Inc. | | Oil Operator | Sep 1986 |
| 10587 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 10588 | Foundation Energy Managment LLC | Addison, TX 74119 | Oil & Gas Operator | Mar 2025 |
| 10589 | Foundation Energy MGT, LLC | | Oil & Gas Operator | Jan 2014 |
| 10590 | Foundation Oil Company, Inc. | Kingwood, TX 77325 | Oil & Gas Operator | May 2025 |
| 10591 | Founders Oil & Gas Operating,LLC | Arlington, TX 76011 | Oil & Gas Operator | Jul 2023 |
| 10592 | Fountain Oil And Gas Co. | | Gas Operator | Dec 1993 |
| 10593 | Fountainhead Resources LTD | | Oil & Gas Operator | Aug 2016 |
| 10594 | Four - S Oil Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 10595 | Four A Oil Company Inc | Copan, OK 74022 | Oil Operator | Aug 2022 |
| 10596 | Four Aces Company | Borger, TX 79008 | Oil & Gas Operator | Mar 1995 |
| 10597 | Four Brothers Inc | | Oil & Gas Operator | Jan 2020 |
| 10598 | Four C Oil & Gas Corp. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 10599 | Four Corners Energy, LLC | Gulf Breeze, FL 32563 | Oil & Gas Operator | May 2025 |
| 10600 | Four Corners Exploration Co | Farmington, NM 87499 | Oil & Gas Operator | Mar 2025 |