| 15601 | Kasperski Oil Corp | | Oil & Gas Operator | May 2002 |
| 15602 | Kastle Resources Enterprises Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 15603 | Kastman Oil Company | Lubbock, TX 79408 | Oil & Gas Operator | Nov 2012 |
| 15604 | Kastman Oil Company, LLC | Lubbock, TX 79408 | Oil Operator | Dec 2025 |
| 15605 | Kasturi Properties, LTD. | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |
| 15606 | Kat Energy Corporation | Amarillo, TX 79105 | Gas Operator | Sep 2001 |
| 15607 | Kat Energy, LTD. | Amarillo, TX 79120 | Gas Operator | Jun 2020 |
| 15608 | Katana Resources | | Oil & Gas Operator | Aug 1984 |
| 15609 | Kate F H | Oklahoma City, OK 73122 | Oil & Gas Operator | Jun 2000 |
| 15610 | Katherman Vance E | Casper, WY 82601 | Oil Operator | Dec 2004 |
| 15611 | Kathleen Palmer Third Party Special Needs Trust | Blasdell, NY 14219 | Gas Operator | Dec 2024 |
| 15612 | Kathler Oil Interests | Frisco, TX 75034 | Oil & Gas Operator | Dec 2025 |
| 15613 | Kato Operating C | | Oil Operator | Aug 1988 |
| 15614 | Kato Operating Company | Bristow, OK 74010 | Oil & Gas Operator | Mar 2015 |
| 15615 | Katsco Energy, Inc. | Round Rock, TX 78664 | Oil & Gas Operator | Dec 2025 |
| 15616 | Katy Drilling Corporation | Tulsa, OK 74146-3717 | Oil & Gas Operator | Apr 2020 |
| 15617 | Katy Resources Etx, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2011 |
| 15618 | Katy Resources LLC | Arlington, TX 76016 | Oil & Gas Operator | Dec 2025 |
| 15619 | Katz Joe Oil Acc | | Oil Operator | Oct 1995 |
| 15620 | Katz Oil Co. | San Antonio, TX 78218 | Oil & Gas Operator | Dec 2002 |
| 15621 | Kauffman K P Company Inc | Denver, CO 80202 | Oil & Gas Operator | Mar 1996 |
| 15622 | Kauthar Energy Co., Inc. | | Oil & Gas Operator | Dec 2002 |
| 15623 | Kavanaugh Energy Services, Inc. | | Gas Operator | Sep 2025 |
| 15624 | Kavouras Thomas | Apollo, PA 15613-1108 | Oil & Gas Operator | Dec 2023 |
| 15625 | Kay County Properties | Tulsa, OK 74145 | Oil & Gas Operator | May 1997 |
| 15626 | Kay Dee Oil | | Oil Operator | Jun 2025 |
| 15627 | Kay Jay Oil Co | Artesia, NM 88210 | Oil & Gas Operator | May 2001 |
| 15628 | Kay Lease Service | | Oil Operator | Feb 1981 |
| 15629 | Kay Operating Co. | | Oil Operator | May 1982 |
| 15630 | Kay Production Company | Seminole, OK 74868 | Oil & Gas Operator | Sep 2025 |
| 15631 | Kay-Lyn Petroleum Co. | | Oil & Gas Operator | Oct 1989 |
| 15632 | Kaye Poth Oil Corp. | Seguin, TX 78155 | Oil & Gas Operator | May 1998 |
| 15633 | Kaye R. McCown | | Oil Operator | Jun 2012 |
| 15634 | Kayuga Co. | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2025 |
| 15635 | Kazmark, Adam & Tara | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 15636 | KB Oil | | Oil Operator | May 2025 |
| 15637 | KBD Oil And Gas Production LLC | Brinkhaven, OH 43006 | Oil & Gas Operator | Dec 2024 |
| 15638 | KBW Oil & Gas Co | Kiowa, KS 67070 | Oil & Gas Operator | Jul 2024 |
| 15639 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Oct 2025 |
| 15640 | KC Well Service | Big Piney, WY 83113 | Gas Operator | Sep 2025 |
| 15641 | KCM Management, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Oct 2014 |
| 15642 | KCP Of MS Inc | | Oil & Gas Operator | Jan 1991 |
| 15643 | KCR Energy, L.L.C. | Fate, TX 75132 | Oil Operator | Dec 2025 |
| 15644 | KCS Energy Inc | Warren, PA 16365-0187 | Oil & Gas Operator | Dec 2024 |
| 15645 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 15646 | KCS Mountain Resources Inc | Manderson, WY 82432 | Oil & Gas Operator | Nov 2006 |
| 15647 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 15648 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 15649 | KD Energy, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 15650 | KDM Operating, LLC | The Woodlands, TX 77380 | Oil Operator | Dec 2025 |
| 15651 | KDM Production Co | Ozona, TX 76943 | Oil & Gas Operator | Dec 2025 |
| 15652 | Ke-La-Da Enterprises, Inc. | | Oil Operator | Dec 1984 |
| 15653 | Keahey Exploration, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2002 |
| 15654 | Keane Dev | Bradford, PA 16701-3901 | Oil & Gas Operator | Dec 1998 |
| 15655 | Keas Production Company LLC | Estes Park, CO 80517 | Oil Operator | Sep 2025 |
| 15656 | Keating Energy, Inc. | Ambler, PA 19002 | Oil & Gas Operator | Dec 2025 |
| 15657 | Keba Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2015 |
| 15658 | Kebo Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Dec 2025 |
| 15659 | Kebrh Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 15660 | Kec Enterprises, Inc. | Springtown, TX 76082 | Oil & Gas Operator | Dec 2025 |
| 15661 | Kecco, Inc. | | Oil Operator | May 2002 |
| 15662 | Kechi Energy LLC | Chickasha, OK 73018 | Oil & Gas Operator | Oct 2025 |
| 15663 | Keck Partners | | Oil & Gas Operator | Apr 1989 |
| 15664 | Keck Petroleum LLC | Okmulgee, OK 74447-8516 | Oil & Gas Operator | Aug 2025 |
| 15665 | Keck Timothy A | Summerville, PA 15864-6301 | Gas Operator | Dec 2014 |
| 15666 | Kedco Management Corp | | Oil & Gas Operator | Jul 1985 |
| 15667 | Keel Dwight E | Broken Arrow, OK 74014-7569 | Oil Operator | Apr 2020 |
| 15668 | Keelex Corporation | | Oil & Gas Operator | Dec 2021 |
| 15669 | Keeley Oil, L.L.C. | Dallas, TX 75225 | Oil Operator | Dec 2025 |
| 15670 | Keen Oil Co | | Oil & Gas Operator | May 2025 |
| 15671 | Keen Operating Company, Inc. | Austin, TX 78705 | Oil & Gas Operator | Aug 2001 |
| 15672 | Keene, Roy J. Jr. | Sugar Land, TX 77498 | Oil & Gas Operator | Jun 2016 |
| 15673 | Keener Energy Company | Tulsa, OK 74103-4043 | Oil & Gas Operator | Jan 2014 |
| 15674 | Keener Oil & Gas Company | Tulsa, OK 74119-4416 | Oil & Gas Operator | Oct 2025 |
| 15675 | Keener Oil Compa | | Oil & Gas Operator | Jul 1988 |
| 15676 | Keener Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2018 |
| 15677 | Keesee Paul Inc | Holdenville, OK 74848 | Oil & Gas Operator | Nov 1998 |
| 15678 | Keesun Corporation | Cut Bank, MT 59427 | Oil & Gas Operator | Sep 2025 |
| 15679 | Keft Oil Company | Pleasanton, TX 78064 | Oil & Gas Operator | Feb 2003 |
| 15680 | Kehl Oil & Gas Enterprises LLC | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2024 |
| 15681 | Kehler & Kehler Oil Company | Skiatook, OK 74070-3674 | Oil & Gas Operator | Feb 2005 |
| 15682 | Keicher Bros. | Cowlesville, NY 14037 | Gas Operator | Dec 2024 |
| 15683 | Keirus, Inc. | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2025 |
| 15684 | Keisling, H. N. | Pampa, TX 79065 | Oil & Gas Operator | Aug 2015 |
| 15685 | Keith F Walker Oil & Gas Company LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Oct 2025 |
| 15686 | Keith Lynn Minerals LLC | Springfield, OH 45503 | Oil & Gas Operator | Dec 2024 |
| 15687 | Keith McClure | Waynesburg, PA 15370-3636 | Oil & Gas Operator | Dec 2018 |
| 15688 | Keith Petroleum Corporation | Houston, TX 77063 | Oil & Gas Operator | Jan 1993 |
| 15689 | Keith W. Burton | | Oil & Gas Operator | Jan 2025 |
| 15690 | Keith Walker O & G Co LLC | | Oil Operator | Nov 2025 |
| 15691 | Keith, Dennis | Waterville, NY 13480 | Gas Operator | Dec 2024 |
| 15692 | Keiths Pumping Service | Douglas, WY 82633 | Oil & Gas Operator | Aug 2003 |
| 15693 | Keito Gas Inc | Reno, OH 45773 | Oil & Gas Operator | Dec 2020 |
| 15694 | Kek Exploration LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 15695 | Kelcas Well Services LTD | Owensboro, KY 42303 | Oil Operator | Dec 2021 |
| 15696 | Kelco Petroleum Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 2013 |
| 15697 | Kele Exploration, Inc. | | Oil & Gas Operator | Apr 1990 |
| 15698 | Kellco Energy, LTD. | Houston, TX 77057 | Oil & Gas Operator | Nov 2007 |
| 15699 | Kelle Day Oil Producers Inc | Braman, OK 74632-9147 | Oil & Gas Operator | Dec 2023 |
| 15700 | Kelle Lambing Production Co | Braman, OK 74632-0132 | Oil & Gas Operator | Nov 2014 |