| 15701 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 15702 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 15703 | KLBW Partners, L.L.C. | Ratliff City, OK 73481 | Oil & Gas Operator | Apr 2026 |
| 15704 | KLC Petroleum Company, LLC | Henderson, KY 42420 | Oil Operator | Dec 2023 |
| 15705 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 15706 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Apr 2026 |
| 15707 | Kleese Development Associates | Youngstown, OH 44514 | Oil & Gas Operator | Dec 2025 |
| 15708 | Klein Oil & Logging | Alma, NY 14708 | Oil & Gas Operator | Dec 2025 |
| 15709 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 15710 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 15711 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Aug 2026 |
| 15712 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 15713 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 15714 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2026 |
| 15715 | Klimko, Nathan J. | Attica, NY 14011 | Gas Operator | Dec 2025 |
| 15716 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 15717 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 15718 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Apr 2026 |
| 15719 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Apr 2026 |
| 15720 | Klingler Automatic Industries Inc | | Oil & Gas Operator | May 2026 |
| 15721 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 15722 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 15723 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 15724 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 15725 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 15726 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 15727 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Aug 2026 |
| 15728 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Apr 2026 |
| 15729 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | May 2026 |
| 15730 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 15731 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 15732 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 15733 | Klock, Ted | Corsicana, TX 75110 | Oil Operator | Jul 2022 |
| 15734 | Klondike Investments, Inc. | Paola, KS 66071 | Oil Operator | Sep 2011 |
| 15735 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Aug 2026 |
| 15736 | Klug, E A & A J (Estate) | Proctor, WV 26055-0000 | Oil & Gas Operator | Dec 2021 |
| 15737 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 15738 | KMD Operating Company LLC | | Oil & Gas Operator | Dec 2015 |
| 15739 | Kmfad Oil And Gas LLC | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2023 |
| 15740 | Kmi Continental Off. Prod. Co. | | Oil & Gas Operator | Jan 1988 |
| 15741 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Aug 2026 |
| 15742 | KMP Operating Inc. | | Oil Operator | Dec 2025 |
| 15743 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 15744 | KN Production Company | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 15745 | Knaup, Harry J. & Lucille | Shelby, MT 59474 | Oil Operator | Oct 2023 |
| 15746 | KND Oil & Gas, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2023 |
| 15747 | Kneer, Donna | Portland, NY 14769 | Gas Operator | Dec 2025 |
| 15748 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Aug 2026 |
| 15749 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 15750 | Knickerbocker Land Resources | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2015 |
| 15751 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 15752 | Knife River Oil, LLC | Bull Shoals, AR 72619 | Oil Operator | Feb 2017 |
| 15753 | Knight Casing Pulling Company | | Oil Operator | Jun 1989 |
| 15754 | Knight Energy Inc | Tulsa, OK 74104 | Oil Operator | May 2026 |
| 15755 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 15756 | Knight Oil Company | Victoria, KS 67671 | Gas Operator | Apr 2026 |
| 15757 | Knight Resources LLC | | Oil & Gas Operator | Dec 2013 |
| 15758 | Knight Resources, Inc. | | Oil & Gas Operator | Dec 2011 |
| 15759 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 15760 | Knight, Michael L. | Ripley, NY 14775 | Gas Operator | Dec 2025 |
| 15761 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Aug 2026 |
| 15762 | Knight, Wilbur H. Et Al | | Oil & Gas Operator | Jul 1991 |
| 15763 | Knighton Oil Com | | Oil & Gas Operator | Nov 1996 |
| 15764 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 15765 | Knightsbridge Petroleum Corp. | | Oil Operator | Jul 1991 |
| 15766 | KNK Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 1996 |
| 15767 | Knobler, Alfred E | | Oil & Gas Operator | Dec 2003 |
| 15768 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Aug 2026 |
| 15769 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2025 |
| 15770 | Knox Industries, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Aug 2026 |
| 15771 | Knox, D. M., Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2000 |
| 15772 | Knox, H. A. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 15773 | Knox, Jack L. | Coleman, TX 76834 | Oil & Gas Operator | Aug 2026 |
| 15774 | Knutson Production Company | Loco, OK 73442-9706 | Oil & Gas Operator | Apr 2026 |
| 15775 | Ko Operating | Merkel, TX 79536 | Oil & Gas Operator | Aug 2026 |
| 15776 | Ko Operating LLC | Austin, TX 78746 | Oil Operator | Aug 2026 |
| 15777 | Kobar Corporation | Riverton, WY 82501 | Gas Operator | Dec 1996 |
| 15778 | Koby Oil Company LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2026 |
| 15779 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 15780 | Koch Exploration | | Oil & Gas Operator | Oct 1988 |
| 15781 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 15782 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 15783 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 15784 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 15785 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |
| 15786 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 15787 | Koch Production Company | Worland, WY 82401 | Oil & Gas Operator | Dec 2002 |
| 15788 | Koch, P. S. | Seguin, TX 78155 | Oil & Gas Operator | May 2018 |
| 15789 | Koda GNB, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2026 |
| 15790 | Koda Operating LLC | Tyler, TX 75703-5596 | Oil & Gas Operator | Apr 2026 |
| 15791 | Koda Resources Operating, LLC | | Oil & Gas Operator | May 2026 |
| 15792 | Koda Uinta, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2026 |
| 15793 | Kodiak Drilling, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 15794 | Kodiak Energy LLC | Pineville, MO 64856 | Oil Operator | Dec 2019 |
| 15795 | Kodiak Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
| 15796 | Kodiak Oil & Gas Exploration Inc | Oklahoma City, OK 73134-1046 | Oil & Gas Operator | Apr 2026 |
| 15797 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Aug 2026 |
| 15798 | Kodiak Oil Co. | Stockton, MO 65785 | Oil Operator | May 1996 |
| 15799 | Kodiak Operating, L.L.C. | Olney, TX 76374 | Oil & Gas Operator | Aug 2026 |
| 15800 | Kodiak Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 1996 |