| 27601 | Swanson, Tom | Electra, TX 76360 | Oil & Gas Operator | Oct 2004 |
| 27602 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |
| 27603 | Swaringin, Howard Operating | Maryneal, TX 79535 | Oil & Gas Operator | May 2003 |
| 27604 | Swartz Oil Company | San Angelo, TX 76906 | Oil & Gas Operator | Apr 2024 |
| 27605 | Swartz, Guy A. | San Angelo, TX 76904 | Oil & Gas Operator | Aug 1993 |
| 27606 | SWD Acidizing, Inc. | | Oil Operator | Feb 2014 |
| 27607 | SWD, Inc. | | Oil Operator | Jan 2024 |
| 27608 | Swearingen Robert E Dba Sabo Production | Seminole, OK 74868-2267 | Oil & Gas Operator | Dec 2023 |
| 27609 | Sweet Crude Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Apr 2024 |
| 27610 | Sweet Texas T Energy LLC | Clyde, TX 79510 | Oil Operator | Apr 2024 |
| 27611 | Sweetwater Drilling Co., Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2024 |
| 27612 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Dec 2023 |
| 27613 | Sweetwater Production, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Apr 2024 |
| 27614 | Swenco-Western I | | Oil Operator | Sep 1987 |
| 27615 | Swenco-Western Inc | Houston, TX 77060 | Oil & Gas Operator | Jan 1997 |
| 27616 | Swenson Backhoe Service, Inc. | Electra, TX 76360 | Oil Operator | Apr 2024 |
| 27617 | Swenson, Clifford E. | Henrietta, TX 76365 | Oil & Gas Operator | Apr 2024 |
| 27618 | Swenton, Michael J. | Tulsa, OK 74105 | Oil & Gas Operator | Dec 2023 |
| 27619 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 27620 | Swepi LP And Miller Brothers | | Oil & Gas Operator | Oct 1992 |
| 27621 | Swepi/Western Division | Houston, TX 77210 | Oil & Gas Operator | Aug 1984 |
| 27622 | Swevco-Sabw LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
| 27623 | Swiess & Thomas | San Antonio, TX 78247 | Oil Operator | Apr 2024 |
| 27624 | Swift A W & Company Inc | Sand Springs, OK 74063-5124 | Oil Operator | Jun 2003 |
| 27625 | Swift Beef Company | | Oil & Gas Operator | May 2006 |
| 27626 | Swift Energy Com | | Oil & Gas Operator | Sep 1995 |
| 27627 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 27628 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |
| 27629 | Swinea Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2015 |
| 27630 | Swingle Drilling Inc | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2022 |
| 27631 | Swinkwood Oil Co | | Oil Operator | Apr 2015 |
| 27632 | SWJN Oil Company | Kilgore, TX 75663 | Oil Operator | Apr 2024 |
| 27633 | SWN Production (Louisiana), LLC | | Oil & Gas Operator | Nov 2023 |
| 27634 | SWN Production (Ohio), LLC | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2023 |
| 27635 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Jan 2024 |
| 27636 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 27637 | Swo & Ism, LLC | | Oil & Gas Operator | Dec 2021 |
| 27638 | Swope Corp. | Austin, TX 78735 | Oil & Gas Operator | Apr 2024 |
| 27639 | SWS | Humble, TX 77338 | Oil Operator | Apr 2024 |
| 27640 | SWS Operating LLC | | Oil Operator | Dec 2023 |
| 27641 | SX54, LLC | Sheridan, WY 82801 | Oil Operator | Nov 2017 |
| 27642 | Sydri Operating, LLC | Dallas, TX 75231 | Oil & Gas Operator | Apr 2024 |
| 27643 | Sydson D'Oro Expl. Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 27644 | Sydson Energy, Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2024 |
| 27645 | Syj Oil & Gas | San Antonio, TX 78209 | Oil Operator | Sep 2000 |
| 27646 | Syj Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2024 |
| 27647 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Apr 2024 |
| 27648 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 27649 | Sylvite Corp | Tulsa, OK 741363908 | Oil & Gas Operator | Dec 2000 |
| 27650 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | Apr 2024 |
| 27651 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | Apr 2024 |
| 27652 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |
| 27653 | Syndex Resources, Inc. | Wellesley, MA 02181-000 | Oil & Gas Operator | Dec 2021 |
| 27654 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2023 |
| 27655 | Synergy Development Corp | | Oil Operator | Apr 2011 |
| 27656 | Synergy Offshore LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2022 |
| 27657 | Synergy Oil & Gas LLC | | Oil & Gas Operator | Nov 2023 |
| 27658 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 27659 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 27660 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 27661 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 27662 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Feb 2024 |
| 27663 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 27664 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |
| 27665 | Synergy Resources Corporation | | Oil & Gas Operator | Oct 2022 |
| 27666 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | Apr 2024 |
| 27667 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | Apr 2024 |
| 27668 | Szumigala, Edward R. & Ruth A. | Dunkirk, NY 14048 | Gas Operator | Dec 2022 |
| 27669 | T & B Oil Company Inc | Ardmore, OK 73401-3709 | Oil & Gas Operator | Apr 2015 |
| 27670 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 27671 | T & C MFG. & Operating, Inc. | Great Bend, KS 67530 | Oil Operator | May 2022 |
| 27672 | T & C Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2024 |
| 27673 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 27674 | T & D Oil Co. | Victoria, KS 67671 | Oil Operator | Apr 1996 |
| 27675 | T & D Oil Compan | | Oil Operator | Jan 1992 |
| 27676 | T & D Oil LLC | | Oil & Gas Operator | Dec 2023 |
| 27677 | T & F Exploration, LP | Pittsburgh, PA 15241-1375 | Oil & Gas Operator | Oct 2023 |
| 27678 | T & F Oil Company | | Oil Operator | Jan 2024 |
| 27679 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 27680 | T & G Energy LLC | Dallas, TX 75230 | Oil Operator | Nov 2010 |
| 27681 | T & G Holding LLC | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Mar 2015 |
| 27682 | T & G Oil, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2010 |
| 27683 | T & I Petroleum Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2005 |
| 27684 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Dec 2023 |
| 27685 | T & J Operating | Ada, OK 74821-1547 | Oil Operator | Feb 2012 |
| 27686 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Dec 2023 |
| 27687 | T & L Oil Production | | Oil Operator | Jan 2024 |
| 27688 | T & L Production | | Oil Operator | May 1987 |
| 27689 | T & L Production Company | | Oil Operator | Feb 1984 |
| 27690 | T & M Gauging | | Oil Operator | Oct 2006 |
| 27691 | T & M Oil & Royalty | Ada, OK 74820 | Oil Operator | Feb 2012 |
| 27692 | T & M Oil Company | Midlothian, TX 76065 | Oil & Gas Operator | Apr 2024 |
| 27693 | T & O Gas Co | | Oil Operator | May 2001 |
| 27694 | T & P Exploration | Addison, TX 75006 | Oil & Gas Operator | Aug 1993 |
| 27695 | T & P Oil & Gas, L.L.C. | Overland Park, KS 66212 | Oil Operator | Dec 2009 |
| 27696 | T & R Investments, Inc. | Borger, TX 79008 | Oil & Gas Operator | Nov 1995 |
| 27697 | T & R Oil | Mapleton, KS 66754 | Oil & Gas Operator | May 2018 |
| 27698 | T & R Oil Company, A General Partnership | Moline, KS 67353 | Oil Operator | Dec 2019 |
| 27699 | T & S Mud Disposal LLC | Lindsay, OK 73052-0754 | Oil Operator | Mar 2013 |
| 27700 | T & S Oil & Gas, LLC | Stephenville, TX 76401 | Gas Operator | Apr 2024 |