| 15501 | Kingwood Energy, LLC | | Oil Operator | Feb 2025 |
| 15502 | Kingwood Exploration LLC | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2026 |
| 15503 | Kingwood Oil Co; Inc | Luling, TX 78648 | Oil & Gas Operator | Nov 2015 |
| 15504 | Kingwood Resources | Luling, TX 78648 | Oil & Gas Operator | Feb 2002 |
| 15505 | Kingwood Resources, Inc. | Kingwood, TX 77339 | Oil & Gas Operator | May 2022 |
| 15506 | Kinlaw Oil Corporation | Dallas, TX 75380 | Oil & Gas Operator | Jun 2026 |
| 15507 | Kinney Incorporated | Andrews, TX 79714 | Oil & Gas Operator | Jun 2026 |
| 15508 | Kinney Oil Company | Denver, CO 80202 | Oil Operator | Dec 2024 |
| 15509 | Kinsey Interests | | Oil & Gas Operator | May 1991 |
| 15510 | Kinsey Interests And Marlin | | Oil Operator | Mar 1983 |
| 15511 | Kinsey Interests Et Al | | Oil Operator | Apr 1988 |
| 15512 | Kintex Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2026 |
| 15513 | Kinzer, J. W. | | Oil & Gas Operator | Dec 2006 |
| 15514 | Kiowa Gas Company | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 15515 | Kiowa Producers, LLC | Parsons, KS 67357 | Oil & Gas Operator | Oct 2025 |
| 15516 | Kiowa-T.N.T., Inc. | | Oil Operator | Sep 1981 |
| 15517 | Kipling Energy Incorporated | Shelby, MT 59474 | Oil & Gas Operator | Jan 2011 |
| 15518 | Kirby & Son Dozing | Lewisburg, KY 42256 | Oil Operator | Dec 2023 |
| 15519 | Kirby Exploration Co Of Texas | | Oil & Gas Operator | Nov 1993 |
| 15520 | Kirby Exploration Company | Houston, TX 77251 | Oil & Gas Operator | Jan 2014 |
| 15521 | Kirby Oil Company | | Oil Operator | Dec 2024 |
| 15522 | Kirk Billie E | Morris, OK 74445 | Oil & Gas Operator | Mar 2026 |
| 15523 | Kirk David | Midland, TX 79705 | Oil & Gas Operator | Mar 2026 |
| 15524 | Kirk Tank Trucks Inc | Morris, OK 74445 | Oil & Gas Operator | Dec 2021 |
| 15525 | Kirkconnell And Associates | | Oil & Gas Operator | Dec 1996 |
| 15526 | Kirkman W L Inco | | Oil & Gas Operator | Dec 1994 |
| 15527 | Kirkpatrick | Longton, KS 67352 | Oil Operator | Jun 2000 |
| 15528 | Kirkpatrick Oil & Gas Co. | Pampa, TX 79066 | Oil & Gas Operator | Apr 1996 |
| 15529 | Kirkpatrick Oil & Gas L.L.C. | Midland, TX 79701 | Oil & Gas Operator | Dec 2010 |
| 15530 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Jun 2026 |
| 15531 | Kirkpatrick Properties LLC | Ellinwood, KS 67526 | Oil Operator | Feb 2026 |
| 15532 | Kirkpatrick W E | Ponca City, OK 74604-4146 | Gas Operator | Oct 2001 |
| 15533 | Kirkpatrick, John Oil LLC | Victoria, TX 77905 | Oil & Gas Operator | Jun 2026 |
| 15534 | Kirkwood Engineering, LTD | | Oil Operator | Dec 1991 |
| 15535 | Kirkwood Oil And Gas Co. | | Oil Operator | Jan 1988 |
| 15536 | Kirkwood W C | Casper, WY 82602 | Oil & Gas Operator | May 2005 |
| 15537 | Kirrie Oil Company LLC | Oklahoma City, OK 73113-0125 | Oil & Gas Operator | Jun 2025 |
| 15538 | Kirsch, Doris R. | Strykersville, NY 14145 | Gas Operator | Dec 2024 |
| 15539 | Kirtley, Ralph | | Oil & Gas Operator | Dec 2005 |
| 15540 | Kis Oil & Gas Inc | Brookville, PA 15825-4210 | Oil & Gas Operator | Dec 2014 |
| 15541 | Kiska Oil & Gas Inc | Tulsa, OK 74103 | Oil Operator | Oct 2012 |
| 15542 | Kiska Oil Compan | | Oil & Gas Operator | Oct 1989 |
| 15543 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 15544 | Kismet Properties, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Jun 2026 |
| 15545 | Kiss Productions | | Oil & Gas Operator | Oct 2002 |
| 15546 | Kissack Resources. LLC | | Oil & Gas Operator | Apr 2026 |
| 15547 | Kissack Water & Oil Service Inc | Rozet, WY 82727 | Oil & Gas Operator | Apr 2026 |
| 15548 | Kissinger Petroleum Corp | | Oil & Gas Operator | Nov 1983 |
| 15549 | Kistler John & Ruth | Newcomerstown, OH 43832 | Oil & Gas Operator | Dec 1998 |
| 15550 | Kitchen, Robert (Deceased) | Osawatomie, KS 66064 | Oil Operator | Oct 2009 |
| 15551 | Kittle Oil | | Oil Operator | Nov 2025 |
| 15552 | Kiva Resources Inc. | Houston, TX 77265 | Oil & Gas Operator | Mar 2008 |
| 15553 | Kiwanda Energy, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jan 2008 |
| 15554 | Kiwanda Resc Inc | | Oil & Gas Operator | Aug 1993 |
| 15555 | Kizzar Well Servicing, Inc. | Chase, KS 67524 | Oil Operator | Feb 2026 |
| 15556 | KJ Energy, LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Jul 2024 |
| 15557 | KJ Energy, LLC Of Delaware | | Oil & Gas Operator | Nov 2016 |
| 15558 | KJB Oil Company LLC | Dewey, OK 74029-3053 | Oil Operator | Apr 2026 |
| 15559 | Kjellin, Charles Willard (Deceased) | Marion, KS 66861 | Oil & Gas Operator | Oct 2013 |
| 15560 | KJR Services LLC | Edmond, OK 73083 | Oil & Gas Operator | Feb 2026 |
| 15561 | Klabzuba Brothers LLC | Prague, OK 74864-0567 | Oil & Gas Operator | Jul 2007 |
| 15562 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 15563 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 15564 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 15565 | Klaeger Operating Company II,LLC | Maxwell, TX 78656 | Oil Operator | Jun 2026 |
| 15566 | Klaeger Operating Company, LLC | Horseshoe Bay, TX 78657 | Oil Operator | Jun 2026 |
| 15567 | Klaeger, J. H. | Hondo, TX 78861 | Oil & Gas Operator | Dec 2009 |
| 15568 | Klassen Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jun 2026 |
| 15569 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 15570 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 15571 | KLBW Partners, L.L.C. | Ratliff City, OK 73481 | Oil & Gas Operator | Apr 2026 |
| 15572 | KLC Petroleum Company, LLC | Henderson, KY 42420 | Oil Operator | Dec 2023 |
| 15573 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 15574 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Jan 2026 |
| 15575 | Kleese Development Associates | Youngstown, OH 44514 | Oil & Gas Operator | Dec 2025 |
| 15576 | Klein Oil & Logging | Alma, NY 14708 | Oil & Gas Operator | Dec 2024 |
| 15577 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 15578 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 15579 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Jun 2026 |
| 15580 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 15581 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 15582 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2026 |
| 15583 | Klimko, Nathan J. | Attica, NY 14011 | Gas Operator | Dec 2024 |
| 15584 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 15585 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 15586 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Mar 2026 |
| 15587 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Mar 2026 |
| 15588 | Klingler Automatic Industries Inc | | Oil & Gas Operator | Apr 2026 |
| 15589 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 15590 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 15591 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 15592 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 15593 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 15594 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 15595 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Jun 2026 |
| 15596 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Sep 2025 |
| 15597 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Apr 2026 |
| 15598 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 15599 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 15600 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |