| 601 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 602 | Southeastern Gas Company | | Oil & Gas Operator | Dec 2019 |
| 603 | Southern Triangle Oil | | Oil & Gas Operator | Dec 2000 |
| 604 | Southern WV Oil & Gas | | Gas Operator | Dec 2021 |
| 605 | Spencer Enterprises Dba Hugh Spencer | Smithburg, WV 26436-0000 | Oil & Gas Operator | Dec 2021 |
| 606 | St. Clair Oil Co. | St Clairsville, OH 43950 | Oil & Gas Operator | Dec 1997 |
| 607 | Stallion Inc. | Hurricane, WV 25526 | Oil & Gas Operator | Dec 2021 |
| 608 | Stalnaker Energy Corporation | | Oil & Gas Operator | Dec 2021 |
| 609 | Stalnaker, William K | | Oil & Gas Operator | Dec 2008 |
| 610 | Standard Oil Company, Inc. | Parkesburg, WV 26103 | Oil & Gas Operator | Mar 2022 |
| 611 | Status Oil Well, Inc. | Charlotte, NC 28270 | Oil & Gas Operator | Dec 2011 |
| 612 | Stephen Debrular Dba Stephen Gas Company | Weston, WV 26452-7396 | Gas Operator | Dec 2021 |
| 613 | Stephen L Satterfield Production Company | Grantsville, WV 26147-0757 | Oil & Gas Operator | Nov 2021 |
| 614 | Stone Energy Corporation | Denver, CO 80202-2828 | Oil & Gas Operator | Oct 2014 |
| 615 | Stonestreet, Vance | Spencer, WV 25276-0000 | Oil & Gas Operator | Dec 2006 |
| 616 | Stowers Energy, LLC | Clearwater Beach, FL 33767 | Oil & Gas Operator | Dec 2021 |
| 617 | Stydahar Oil & Gas Co. | | Oil & Gas Operator | Dec 2021 |
| 618 | Sugar Rock Incorporated | | Oil & Gas Operator | Dec 2021 |
| 619 | Summit Appalachia Operating Company, LLC | | Gas Operator | Dec 2021 |
| 620 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 621 | SWN Production (Ohio), LLC | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2023 |
| 622 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Jan 2024 |
| 623 | Syndex Resources, Inc. | Wellesley, MA 02181-000 | Oil & Gas Operator | Dec 2021 |
| 624 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 625 | T & F Exploration, LP | Pittsburgh, PA 15241-1375 | Oil & Gas Operator | Oct 2023 |
| 626 | T.O.F., Inc. | | Oil & Gas Operator | Dec 2002 |
| 627 | Taines, Michael Enterprises | | Oil & Gas Operator | Dec 2021 |
| 628 | Tally Ho Oil & Gas Co | Sunman, IN 47041 | Oil & Gas Operator | Dec 2021 |
| 629 | Tapo Energy, LLC | West Union, WV 26456 | Oil & Gas Operator | Dec 2021 |
| 630 | Targa Development, Inc. | Clarksburg, WV 26301-0000 | Oil & Gas Operator | Dec 2021 |
| 631 | Tate Gas Company | Glenville, WV 26351-0000 | Oil & Gas Operator | Dec 2021 |
| 632 | Taylor, W H | | Gas Operator | Dec 2004 |
| 633 | Teavee Oil & Gas, Inc. | Charleston, WV 25301-0000 | Oil & Gas Operator | Dec 2021 |
| 634 | Tedik Limited Partnership | Williamson, WV 25661-0000 | Gas Operator | Dec 2021 |
| 635 | Ten A Coal Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2020 |
| 636 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 637 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Apr 2024 |
| 638 | Tenmile Land Limited Liability Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 639 | Term Energy Corp. | Harrisville, WV 26362-0000 | Oil & Gas Operator | Dec 2021 |
| 640 | Texas Keystone Inc | Oakmont, PA 15139-2072 | Oil & Gas Operator | Nov 2017 |
| 641 | The Calvert Company | Oklahoma City, OK 73154-1589 | Oil & Gas Operator | Dec 2021 |
| 642 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 643 | Thomas Oil Company | | Oil & Gas Operator | Dec 2008 |
| 644 | Tiger Oil, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2007 |
| 645 | TNG, Inc. | | Oil & Gas Operator | Dec 1996 |
| 646 | Toney Branch Gas Company | Huntington, WV 25702-0086 | Gas Operator | Dec 2021 |
| 647 | Tower Drilling Corporation | | Oil & Gas Operator | Dec 2021 |
| 648 | Trans Energy, Inc. | St. Marys, WV 26170 | Oil & Gas Operator | Dec 2017 |
| 649 | Tri-County Oil & Gas, Inc. | Fairmont, WV 26555-0000 | Oil & Gas Operator | Dec 2019 |
| 650 | Tri-Crude Oil & Gas | Harrisville, WV 26362-0000 | Oil & Gas Operator | Dec 2021 |
| 651 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Jan 2024 |
| 652 | Triad Hunter, LLC | Spring, TX 77389 | Oil & Gas Operator | Dec 2021 |
| 653 | Triad Resources Inc | Spring, TX 77389 | Oil & Gas Operator | Dec 2020 |
| 654 | Tribune Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 655 | Trio Oil And Gas Company | Salem, WV 26426 | Oil & Gas Operator | Nov 2021 |
| 656 | Trio Petroleum Corp. | Glenville, WV 26351-0880 | Oil & Gas Operator | Jul 2016 |
| 657 | Trittipo, J. L. | | Oil & Gas Operator | Nov 1997 |
| 658 | TSR Enterprises, LLC | Harrisville, WV 26362-7631 | Oil & Gas Operator | Dec 2021 |
| 659 | Tucker, Gene | | Oil & Gas Operator | Dec 2011 |
| 660 | Tug Fork Development | Catlettsburg, KY 41129 | Gas Operator | Dec 2021 |
| 661 | Tug Hill Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2021 |
| 662 | Tully Drilling Company | | Gas Operator | Dec 2021 |
| 663 | Tuscany Gas Limited Liability Company | | Gas Operator | Dec 2021 |
| 664 | Ullum Oil And Gas Development Corporation, Inc. | Grantsville, WV 26147-0000 | Oil & Gas Operator | Dec 2021 |
| 665 | Ultra Production Company, LLC | Cedar Bluff, VA 24609 | Gas Operator | Oct 2014 |
| 666 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 667 | Underwood, Donald D. Dba Mustang Oil Co | Salem, WV 26426 | Oil & Gas Operator | Dec 2020 |
| 668 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 669 | United Operating Company | Olney, TX 76374 | Oil & Gas Operator | Aug 2003 |
| 670 | United Petro LTD. | | Oil & Gas Operator | Dec 2018 |
| 671 | Upland Resources, Inc. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2009 |
| 672 | Us Energy Corp. | Houston, TX 77057 | Oil & Gas Operator | Dec 2021 |
| 673 | Viking Energy Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2021 |
| 674 | Viking International Resources Co., Inc. | | Oil & Gas Operator | Dec 2020 |
| 675 | Virtex Eastern Producing Co., LLC | | Gas Operator | Dec 2021 |
| 676 | W. E. B. Well Tending Service, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Nov 2011 |
| 677 | Waco Oil & Gas Co., Inc. | Glenville, WV 26351-0397 | Oil & Gas Operator | Dec 2021 |
| 678 | Walker Gas Company | Romney, WV 25757-0000 | Oil & Gas Operator | Dec 2018 |
| 679 | Walker Oil And Gas Inc | | Oil & Gas Operator | Jun 2021 |
| 680 | Walker Well Service Inc | Big Bend, WV 26136-0000 | Oil & Gas Operator | Dec 2021 |
| 681 | Wallace, Drexel And June | New Milton, WV 26411-0000 | Oil & Gas Operator | Dec 2021 |
| 682 | Warfield Management, LLC | Newman, GA 30263 | Gas Operator | Dec 2021 |
| 683 | Warren Drilling Co | Dexter City, OH 45727 | Oil & Gas Operator | Dec 2023 |
| 684 | Warren Producers Inc | Bowling Green, KY 42102 | Oil & Gas Operator | Dec 2017 |
| 685 | Wayne Gas Company | | Gas Operator | Dec 2015 |
| 686 | Welch Oil & Gas Company | Parkersburg, WV 26104-0000 | Oil & Gas Operator | Jun 2013 |
| 687 | West VIrginia Land Resources, Inc. | | Oil & Gas Operator | Dec 2021 |
| 688 | Westmoreland Gas, LLC | | Oil & Gas Operator | Dec 2021 |
| 689 | Weva Oil Corp. | | Oil & Gas Operator | Nov 2019 |
| 690 | Weyerhaeuser Company | Crossett, AR 71635 | Oil & Gas Operator | Sep 1994 |
| 691 | Whitnam Oil & Gas Corp. | Glenville, WV 26351 | Oil & Gas Operator | Dec 2009 |
| 692 | Williams Well Surveys Inc. | | Oil & Gas Operator | Dec 1996 |
| 693 | Willow Run Corporation | St. Marys, WV 26170-0000 | Oil & Gas Operator | Dec 2021 |
| 694 | Wilson, Paul E Jr | | Oil & Gas Operator | Dec 2021 |
| 695 | Witco Corporation | Newark, OH 43055 | Oil & Gas Operator | Dec 1995 |
| 696 | Wolf Run Mining LLC | | Oil & Gas Operator | Dec 2021 |
| 697 | Woofter, Betty | Glenville, WV 26351-0032 | Oil & Gas Operator | Dec 2021 |
| 698 | WV Wells, LTD | | Oil & Gas Operator | Nov 2021 |
| 699 | Xplor Corporation | | Oil & Gas Operator | Dec 2013 |
| 700 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |