| 16101 | Klause & Klaus Oil Co. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2003 |
| 16102 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 16103 | KLBW Partners, L.L.C. | Ratliff City, OK 73481 | Oil & Gas Operator | Sep 2025 |
| 16104 | KLC Petroleum Company, LLC | Henderson, KY 42420 | Oil Operator | Dec 2021 |
| 16105 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 16106 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Oct 2025 |
| 16107 | Kleese Development Associates | Youngstown, OH 44514 | Oil & Gas Operator | Dec 2024 |
| 16108 | Klein Oil & Logging | Alma, NY 14708 | Oil & Gas Operator | Dec 2024 |
| 16109 | Klein, J. L. | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2013 |
| 16110 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 16111 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 16112 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 16113 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 16114 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 16115 | Klimko, Nathan J. | Attica, NY 14011 | Gas Operator | Dec 2024 |
| 16116 | Kling, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2000 |
| 16117 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 16118 | Klingensmith Fred T Etal | Sapulpa, OK 74066 | Oil & Gas Operator | Nov 2007 |
| 16119 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Oct 2019 |
| 16120 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Oct 2025 |
| 16121 | Klingler Automatic Industries Inc | | Oil & Gas Operator | Oct 2025 |
| 16122 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 16123 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 16124 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 16125 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 16126 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 16127 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 16128 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 16129 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Jun 2025 |
| 16130 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Oct 2025 |
| 16131 | Klo Oil & Gas, L.L.C. | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2023 |
| 16132 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 16133 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 16134 | Klock, Ted | Corsicana, TX 75110 | Oil Operator | Jul 2022 |
| 16135 | Klondike Investments, Inc. | Paola, KS 66071 | Oil Operator | Sep 2011 |
| 16136 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Dec 2025 |
| 16137 | Klug, E A & A J (Estate) | Proctor, WV 26055-0000 | Oil & Gas Operator | Dec 2021 |
| 16138 | Klutts, Carlos J. | Austin, TX 78711 | Oil & Gas Operator | Apr 2002 |
| 16139 | KMD Operating Company LLC | | Oil & Gas Operator | Dec 2015 |
| 16140 | Kmfad Oil And Gas LLC | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2023 |
| 16141 | Kmi Continental Off. Prod. Co. | | Oil & Gas Operator | Jan 1988 |
| 16142 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Dec 2025 |
| 16143 | KMP Operating Inc. | | Oil Operator | Nov 2025 |
| 16144 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 16145 | KN Production Company | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 16146 | Knaup, Harry J. & Lucille | Shelby, MT 59474 | Oil Operator | Oct 2023 |
| 16147 | KND Oil & Gas, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2023 |
| 16148 | Kneer, Donna | Portland, NY 14769 | Gas Operator | Dec 2024 |
| 16149 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Dec 2025 |
| 16150 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 16151 | Knickerbocker Land Resources | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2015 |
| 16152 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 16153 | Knife River Oil, LLC | Bull Shoals, AR 72619 | Oil Operator | Feb 2017 |
| 16154 | Knight Casing Pulling Company | | Oil Operator | Jun 1989 |
| 16155 | Knight Energy Inc | Tulsa, OK 74104 | Oil Operator | Sep 2025 |
| 16156 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 16157 | Knight Oil Company | Victoria, KS 67671 | Gas Operator | Jun 2025 |
| 16158 | Knight Resources LLC | | Oil & Gas Operator | Dec 2013 |
| 16159 | Knight Resources, Inc. | | Oil & Gas Operator | Dec 2011 |
| 16160 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 16161 | Knight, Michael L. | Ripley, NY 14775 | Gas Operator | Dec 2024 |
| 16162 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2025 |
| 16163 | Knight, Wilbur H. Et Al | | Oil & Gas Operator | Jul 1991 |
| 16164 | Knighton Oil Com | | Oil & Gas Operator | Nov 1996 |
| 16165 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 16166 | Knightsbridge Petroleum Corp. | | Oil Operator | Jul 1991 |
| 16167 | KNK Oil & Gas | Abilene, TX 79602 | Oil & Gas Operator | Dec 1996 |
| 16168 | Knobler, Alfred E | | Oil & Gas Operator | Dec 2003 |
| 16169 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 16170 | Knotts Brothers | Orma, WV 25268-0000 | Oil & Gas Operator | Dec 2021 |
| 16171 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2024 |
| 16172 | Knox Industries, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Dec 2025 |
| 16173 | Knox, D. M., Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2000 |
| 16174 | Knox, H. A. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 16175 | Knox, Jack L. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 16176 | Knutson Production Company | Loco, OK 73442-9706 | Oil & Gas Operator | Sep 2025 |
| 16177 | Ko Operating | Merkel, TX 79536 | Oil & Gas Operator | Dec 2025 |
| 16178 | Ko Operating LLC | Austin, TX 78746 | Oil Operator | Dec 2025 |
| 16179 | Kobar Corporation | Riverton, WY 82501 | Gas Operator | Dec 1996 |
| 16180 | Koby Oil Company LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 16181 | Kocana Resources | Ranchos Taos, NM 87557 | Oil & Gas Operator | Jul 1999 |
| 16182 | Koch Exploration | | Oil & Gas Operator | Oct 1988 |
| 16183 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 16184 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 16185 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 16186 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 16187 | Koch Midstream Services Company | Wichita, KS 67201 | Oil & Gas Operator | Oct 2000 |
| 16188 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 16189 | Koch Production Company | Worland, WY 82401 | Oil & Gas Operator | Dec 2002 |
| 16190 | Koch, P. S. | Seguin, TX 78155 | Oil & Gas Operator | May 2018 |
| 16191 | Koda Operating LLC | Tyler, TX 75703-5596 | Oil & Gas Operator | Sep 2025 |
| 16192 | Koda Resources Operating, LLC | | Oil & Gas Operator | Oct 2025 |
| 16193 | Kodiak Drilling, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 16194 | Kodiak Energy LLC | Pineville, MO 64856 | Oil Operator | Dec 2019 |
| 16195 | Kodiak Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
| 16196 | Kodiak Oil & Gas Exploration Inc | Oklahoma City, OK 73134-1046 | Oil & Gas Operator | Oct 2025 |
| 16197 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 16198 | Kodiak Oil Co. | Stockton, MO 65785 | Oil Operator | May 1996 |
| 16199 | Kodiak Operating, L.L.C. | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 16200 | Kodiak Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 1996 |