| 15801 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 15802 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 15803 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 15804 | Klaeger Operating Company II,LLC | Marble Falls, TX 78654 | Oil Operator | Dec 2024 |
| 15805 | Klaeger Operating Company, LLC | Marble Falls, TX 78654 | Oil Operator | Dec 2024 |
| 15806 | Klaeger, J. H. | Hondo, TX 78861 | Oil & Gas Operator | Dec 2009 |
| 15807 | Klassen Energy, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Dec 2024 |
| 15808 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 15809 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 15810 | KLBW Partners LLC | Ratliff City, OK 73481 | Oil & Gas Operator | Aug 2024 |
| 15811 | KLC Petroleum Company, LLC | Henderson, KY 42420 | Oil Operator | Dec 2021 |
| 15812 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 15813 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Sep 2024 |
| 15814 | Kleese Development Associates | Youngstown, OH 44514 | Oil & Gas Operator | Dec 2023 |
| 15815 | Klein Oil & Logging | Alma, NY 14708 | Oil & Gas Operator | Dec 2023 |
| 15816 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 15817 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 15818 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2024 |
| 15819 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 15820 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 15821 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2024 |
| 15822 | Klimko, Nathan J. | Attica, NY 14011 | Gas Operator | Dec 2023 |
| 15823 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 15824 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 15825 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Oct 2019 |
| 15826 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Aug 2024 |
| 15827 | Klingler Automatic Industries Inc | | Oil & Gas Operator | Jun 2024 |
| 15828 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 15829 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 15830 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 15831 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 15832 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 15833 | KLM Operating | | Oil & Gas Operator | Jul 2024 |
| 15834 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2024 |
| 15835 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Jun 2023 |
| 15836 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Sep 2024 |
| 15837 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 15838 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 15839 | Kloberdanz, Paul E. | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 15840 | Klock, Carol H. | Auburn, NY 13021 | Gas Operator | Dec 2023 |
| 15841 | Klock, Ted | Corsicana, TX 75110 | Oil Operator | Jul 2022 |
| 15842 | Klondike Investments, Inc. | Paola, KS 66071 | Oil Operator | Sep 2011 |
| 15843 | Klosinski, David | Cattaraugus, NY 14719 | Gas Operator | Dec 2023 |
| 15844 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Dec 2024 |
| 15845 | KLS, Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Jun 2024 |
| 15846 | KLT Gas Inc | Woodlands, TX 77380 | Oil & Gas Operator | Sep 2004 |
| 15847 | Klug, E A & A J (Estate) | Proctor, WV 26055-0000 | Oil & Gas Operator | Dec 2021 |
| 15848 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 15849 | KMD Operating Company LLC | | Oil & Gas Operator | Dec 2015 |
| 15850 | Kmfad Oil And Gas LLC | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2023 |
| 15851 | Kmi Continental Off. Prod. Co. | | Oil & Gas Operator | Jan 1988 |
| 15852 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Dec 2024 |
| 15853 | KMP Operating Inc. | | Oil Operator | Sep 2024 |
| 15854 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 15855 | KN Production Co. | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 15856 | Knaup, Harry J. & Lucille | Shelby, MT 59474 | Oil Operator | Oct 2023 |
| 15857 | KND Oil & Gas, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2023 |
| 15858 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Dec 2024 |
| 15859 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 15860 | Knickerbocker Land Resources | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2015 |
| 15861 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 15862 | Knife River Oil, LLC | Bull Shoals, AR 72619 | Oil Operator | Feb 2017 |
| 15863 | Knight Casing Pulling Company | | Oil Operator | Jun 1989 |
| 15864 | Knight Energy Inc | Tulsa, OK 74104 | Oil Operator | Sep 2024 |
| 15865 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 15866 | Knight Oil Company | Victoria, KS 67671 | Gas Operator | Jul 2024 |
| 15867 | Knight Resources LLC | | Oil & Gas Operator | Dec 2013 |
| 15868 | Knight Resources, Inc. | | Oil & Gas Operator | Dec 2011 |
| 15869 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 15870 | Knight, Michael L. | Ripley, NY 14775 | Gas Operator | Dec 2023 |
| 15871 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2024 |
| 15872 | Knight, Wilbur H. Et Al | | Oil & Gas Operator | Jul 1991 |
| 15873 | Knighton Oil Com | | Oil & Gas Operator | Nov 1996 |
| 15874 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2024 |
| 15875 | Knightsbridge Petroleum Corp. | | Oil Operator | Jul 1991 |
| 15876 | KNK Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 1996 |
| 15877 | Knobler, Alfred E | | Oil & Gas Operator | Dec 2003 |
| 15878 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 15879 | Knotts Brothers | Orma, WV 25268-0000 | Oil & Gas Operator | Dec 2021 |
| 15880 | Knox Energy Inc | Pataskala, OH 43062 | Oil & Gas Operator | Dec 2023 |
| 15881 | Knox Industries, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Dec 2024 |
| 15882 | Knox, D. M., Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2000 |
| 15883 | Knox, H. A. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 15884 | Knox, Jack L. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2024 |
| 15885 | Knutson Production Company | Loco, OK 73442-9706 | Oil & Gas Operator | Aug 2024 |
| 15886 | Ko Operating | Merkel, TX 79536 | Oil & Gas Operator | Dec 2024 |
| 15887 | Ko Operating LLC | Plano, TX 75025 | Oil Operator | Dec 2024 |
| 15888 | Kobar Corporation | Riverton, WY 82501 | Gas Operator | Dec 1996 |
| 15889 | Koby Oil Company LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2024 |
| 15890 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 15891 | Koch Exploration | | Oil & Gas Operator | Oct 1988 |
| 15892 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Jul 2024 |
| 15893 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 15894 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 15895 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 15896 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |
| 15897 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 15898 | Koch Production Company | Worland, WY 82401 | Oil & Gas Operator | Dec 2002 |
| 15899 | Koch, P. S. | Seguin, TX 78155 | Oil & Gas Operator | May 2018 |
| 15900 | Kocher And Westfall | Middlebourne, WV 26149 | Oil Operator | Dec 2021 |