| 16501 | Kirkpatrick | Longton, KS 67352 | Oil Operator | Jun 2000 |
| 16502 | Kirkpatrick Oil & Gas Co. | Pampa, TX 79066 | Oil & Gas Operator | Apr 1996 |
| 16503 | Kirkpatrick Oil & Gas L.L.C. | Midland, TX 79701 | Oil & Gas Operator | Dec 2010 |
| 16504 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2026 |
| 16505 | Kirkpatrick Properties LLC | Ellinwood, KS 67526 | Oil Operator | Sep 2025 |
| 16506 | Kirkpatrick Ronald B | | Oil & Gas Operator | Jul 2013 |
| 16507 | Kirkpatrick W E | Ponca City, OK 74604-4146 | Gas Operator | Oct 2001 |
| 16508 | Kirkpatrick, John Oil LLC | Victoria, TX 77905 | Oil & Gas Operator | Feb 2026 |
| 16509 | Kirkwood & Company | San Antonio, TX 78280 | Oil & Gas Operator | Apr 1995 |
| 16510 | Kirkwood Engineering, LTD | | Oil Operator | Dec 1991 |
| 16511 | Kirkwood Oil And Gas Co. | | Oil Operator | Jan 1988 |
| 16512 | Kirkwood W C | Casper, WY 82602 | Oil & Gas Operator | May 2005 |
| 16513 | Kirrie Oil Company LLC | Oklahoma City, OK 73113-0125 | Oil & Gas Operator | Jun 2025 |
| 16514 | Kirsch, Doris R. | Strykersville, NY 14145 | Gas Operator | Dec 2024 |
| 16515 | Kirtley, Ralph | | Oil & Gas Operator | Dec 2005 |
| 16516 | Kis Oil & Gas Inc | Brookville, PA 15825-4210 | Oil & Gas Operator | Dec 2014 |
| 16517 | Kisatchie Resources, LTD. | | Gas Operator | Jul 1991 |
| 16518 | Kiska Oil & Gas Inc | Tulsa, OK 74103 | Oil Operator | Oct 2012 |
| 16519 | Kiska Oil Compan | | Oil & Gas Operator | Oct 1989 |
| 16520 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 16521 | Kismet Properties, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Feb 2026 |
| 16522 | Kiss Productions | | Oil & Gas Operator | Oct 2002 |
| 16523 | Kissack Resources. LLC | | Oil & Gas Operator | Dec 2025 |
| 16524 | Kissack Water & Oil Service Inc | Rozet, WY 82727 | Oil & Gas Operator | Dec 2025 |
| 16525 | Kissinger Petroleum Corp | | Oil & Gas Operator | Nov 1983 |
| 16526 | Kistler John & Ruth | Newcomerstown, OH 43832 | Oil & Gas Operator | Dec 1998 |
| 16527 | Kitchen, Robert (Deceased) | Osawatomie, KS 66064 | Oil Operator | Oct 2009 |
| 16528 | Kittle Oil | | Oil Operator | Apr 2025 |
| 16529 | Kiva Resources Inc. | Houston, TX 77265 | Oil & Gas Operator | Mar 2008 |
| 16530 | Kivett Kenneth W | Blackwell, OK 74631-0134 | Oil & Gas Operator | Jun 2001 |
| 16531 | Kiwanda Energy, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jan 2008 |
| 16532 | Kiwanda Resc Inc | | Oil & Gas Operator | Aug 1993 |
| 16533 | Kizzar Well Servicing, Inc. | Chase, KS 67524 | Oil Operator | Sep 2025 |
| 16534 | KJ Energy, LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Jul 2024 |
| 16535 | KJ Energy, LLC Of Delaware | | Oil & Gas Operator | Nov 2016 |
| 16536 | KJB Oil Company LLC | Dewey, OK 74029-3053 | Oil Operator | Nov 2025 |
| 16537 | Kjellin, Charles Willard (Deceased) | Marion, KS 66861 | Oil & Gas Operator | Oct 2013 |
| 16538 | KJR Services LLC | Edmond, OK 73083 | Oil & Gas Operator | Oct 2025 |
| 16539 | Klabzuba Brothers LLC | Prague, OK 74864-0567 | Oil & Gas Operator | Jul 2007 |
| 16540 | Klabzuba Joe J | Prague, OK 74864 | Oil & Gas Operator | Aug 2001 |
| 16541 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 16542 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 16543 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 16544 | Klaeger Operating Company II,LLC | Marble Falls, TX 78654 | Oil Operator | Feb 2026 |
| 16545 | Klaeger Operating Company, LLC | Marble Falls, TX 78654 | Oil Operator | Feb 2026 |
| 16546 | Klaeger, J. H. | Hondo, TX 78861 | Oil & Gas Operator | Dec 2009 |
| 16547 | Klassen Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Feb 2026 |
| 16548 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 16549 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 16550 | KLBW Partners, L.L.C. | Ratliff City, OK 73481 | Oil & Gas Operator | Nov 2025 |
| 16551 | KLC Petroleum Company, LLC | Henderson, KY 42420 | Oil Operator | Dec 2021 |
| 16552 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 16553 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Dec 2025 |
| 16554 | Kleese Development Associates | Youngstown, OH 44514 | Oil & Gas Operator | Dec 2024 |
| 16555 | Klein Oil & Logging | Alma, NY 14708 | Oil & Gas Operator | Dec 2024 |
| 16556 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 16557 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 16558 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Feb 2026 |
| 16559 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 16560 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 16561 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 16562 | Klimko, Nathan J. | Attica, NY 14011 | Gas Operator | Dec 2024 |
| 16563 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 16564 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 16565 | Klingensmith Fred T Etal | Sapulpa, OK 74066 | Oil & Gas Operator | Nov 2007 |
| 16566 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Oct 2019 |
| 16567 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Nov 2025 |
| 16568 | Klingler Automatic Industries Inc | | Oil & Gas Operator | Dec 2025 |
| 16569 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 16570 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 16571 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 16572 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 16573 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 16574 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 16575 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 16576 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Sep 2025 |
| 16577 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Dec 2025 |
| 16578 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 16579 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 16580 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 16581 | Klock, Ted | Corsicana, TX 75110 | Oil Operator | Jul 2022 |
| 16582 | Klondike Investments, Inc. | Paola, KS 66071 | Oil Operator | Sep 2011 |
| 16583 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Feb 2026 |
| 16584 | Klug, E A & A J (Estate) | Proctor, WV 26055-0000 | Oil & Gas Operator | Dec 2021 |
| 16585 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 16586 | KMD Operating Company LLC | | Oil & Gas Operator | Dec 2015 |
| 16587 | Kmfad Oil And Gas LLC | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2023 |
| 16588 | Kmi Continental Off. Prod. Co. | | Oil & Gas Operator | Jan 1988 |
| 16589 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Feb 2026 |
| 16590 | KMP Operating Inc. | | Oil Operator | Dec 2025 |
| 16591 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 16592 | KN Production Company | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 16593 | Knaup, Harry J. & Lucille | Shelby, MT 59474 | Oil Operator | Oct 2023 |
| 16594 | KND Oil & Gas, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2023 |
| 16595 | Kneer, Donna | Portland, NY 14769 | Gas Operator | Dec 2024 |
| 16596 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2026 |
| 16597 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 16598 | Knickerbocker Land Resources | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2015 |
| 16599 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 16600 | Knife River Oil, LLC | Bull Shoals, AR 72619 | Oil Operator | Feb 2017 |