| 15201 | Kat Energy Corporation | Amarillo, TX 79105 | Gas Operator | Sep 2001 |
| 15202 | Kat Energy, LTD. | Amarillo, TX 79120 | Gas Operator | Jun 2020 |
| 15203 | Katana Resources | | Oil & Gas Operator | Aug 1984 |
| 15204 | Kate F H | Oklahoma City, OK 73122 | Oil & Gas Operator | Jun 2000 |
| 15205 | Katherman Vance E | Casper, WY 82601 | Oil Operator | Dec 2004 |
| 15206 | Kathleen Palmer Third Party Special Needs Trust | Blasdell, NY 14219 | Gas Operator | Dec 2024 |
| 15207 | Kathler Oil Interests | Frisco, TX 75034 | Oil & Gas Operator | May 2026 |
| 15208 | Kato Operating C | | Oil Operator | Aug 1988 |
| 15209 | Kato Operating Company | Bristow, OK 74010 | Oil & Gas Operator | Mar 2015 |
| 15210 | Katsco Energy, Inc. | Round Rock, TX 78664 | Oil & Gas Operator | May 2026 |
| 15211 | Katy Drilling Corporation | Tulsa, OK 74146-3717 | Oil & Gas Operator | Apr 2020 |
| 15212 | Katy Resources Etx, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2011 |
| 15213 | Katy Resources LLC | Arlington, TX 76003 | Oil & Gas Operator | May 2026 |
| 15214 | Katz Joe Oil Acc | | Oil Operator | Oct 1995 |
| 15215 | Katz Oil Co. | San Antonio, TX 78218 | Oil & Gas Operator | Dec 2002 |
| 15216 | Kauffman K P Company Inc | Denver, CO 80202 | Oil & Gas Operator | Mar 1996 |
| 15217 | Kauthar Energy Co., Inc. | | Oil & Gas Operator | Dec 2002 |
| 15218 | Kavanaugh Energy Services, Inc. | | Gas Operator | Feb 2026 |
| 15219 | Kavouras Thomas | Apollo, PA 15613-1108 | Oil & Gas Operator | Dec 2023 |
| 15220 | Kay County Properties | Tulsa, OK 74145 | Oil & Gas Operator | May 1997 |
| 15221 | Kay Dee Oil | | Oil Operator | Dec 2025 |
| 15222 | Kay Jay Oil Co | Artesia, NM 88210 | Oil & Gas Operator | May 2001 |
| 15223 | Kay Lease Service | | Oil Operator | Feb 1981 |
| 15224 | Kay Operating Co. | | Oil Operator | May 1982 |
| 15225 | Kay Production Company | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 15226 | Kay-Lyn Petroleum Co. | | Oil & Gas Operator | Oct 1989 |
| 15227 | Kaye Poth Oil Corp. | Seguin, TX 78155 | Oil & Gas Operator | May 1998 |
| 15228 | Kaye R. McCown | | Oil Operator | Jun 2012 |
| 15229 | Kayuga Co. | Tulsa, OK 74133 | Oil & Gas Operator | May 2026 |
| 15230 | Kazmark, Adam & Tara | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 15231 | KB Oil | | Oil Operator | Dec 2025 |
| 15232 | KBD Oil And Gas Production LLC | Brinkhaven, OH 43006 | Oil & Gas Operator | Dec 2024 |
| 15233 | KBW Oil & Gas Co | Kiowa, KS 67070 | Oil & Gas Operator | Jul 2024 |
| 15234 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jan 2026 |
| 15235 | KCM Management, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Oct 2014 |
| 15236 | KCP Of MS Inc | | Oil & Gas Operator | Jan 1991 |
| 15237 | KCR Energy, L.L.C. | Fate, TX 75132 | Oil Operator | May 2026 |
| 15238 | KCS Energy Inc | Warren, PA 16365-0187 | Oil & Gas Operator | Dec 2025 |
| 15239 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 15240 | KCS Mountain Resources Inc | Manderson, WY 82432 | Oil & Gas Operator | Nov 2006 |
| 15241 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 15242 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 15243 | KD Energy, LLC | Houston, TX 77056 | Oil & Gas Operator | May 2026 |
| 15244 | KDM Operating, LLC | The Woodlands, TX 77380 | Oil Operator | May 2026 |
| 15245 | KDM Production Co | Ozona, TX 76943 | Oil & Gas Operator | May 2026 |
| 15246 | Ke-La-Da Enterprises, Inc. | | Oil Operator | Dec 1984 |
| 15247 | Keahey Exploration, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2002 |
| 15248 | Keane Dev | Bradford, PA 16701-3901 | Oil & Gas Operator | Dec 1998 |
| 15249 | Keas Production Company LLC | Estes Park, CO 80517 | Oil Operator | Feb 2026 |
| 15250 | Keating Energy, Inc. | FT Washington, PA 19034 | Oil & Gas Operator | May 2026 |
| 15251 | Keba Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2015 |
| 15252 | Kebo Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2026 |
| 15253 | Kebrh Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 15254 | Kec Enterprises, Inc. | Springtown, TX 76082 | Oil & Gas Operator | May 2026 |
| 15255 | Kecco, Inc. | | Oil Operator | May 2002 |
| 15256 | Kechi Energy LLC | Chickasha, OK 73018 | Oil & Gas Operator | Jan 2026 |
| 15257 | Keck Partners | | Oil & Gas Operator | Apr 1989 |
| 15258 | Keck Petroleum LLC | Okmulgee, OK 74447-8516 | Oil & Gas Operator | Oct 2025 |
| 15259 | Keck Timothy A | Summerville, PA 15864-6301 | Gas Operator | Dec 2014 |
| 15260 | Kedco Management Corp | | Oil & Gas Operator | Jul 1985 |
| 15261 | Keel Dwight E | Broken Arrow, OK 74014-7569 | Oil Operator | Apr 2020 |
| 15262 | Keelex Corporation | | Oil & Gas Operator | Dec 2021 |
| 15263 | Keeley Oil, L.L.C. | Dallas, TX 75219 | Oil Operator | May 2026 |
| 15264 | Keen Oil Co | | Oil & Gas Operator | Dec 2025 |
| 15265 | Keen Operating Company, Inc. | Austin, TX 78705 | Oil & Gas Operator | Aug 2001 |
| 15266 | Keene, Roy J. Jr. | Sugar Land, TX 77498 | Oil & Gas Operator | Jun 2016 |
| 15267 | Keener Oil & Gas Company | Tulsa, OK 74119-4416 | Oil & Gas Operator | Feb 2026 |
| 15268 | Keener Oil Compa | | Oil & Gas Operator | Jul 1988 |
| 15269 | Keener Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2018 |
| 15270 | Keesun Corporation | Cut Bank, MT 59427 | Oil & Gas Operator | Feb 2026 |
| 15271 | Keft Oil Company | Pleasanton, TX 78064 | Oil & Gas Operator | Feb 2003 |
| 15272 | Kehl Oil & Gas Enterprises LLC | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2025 |
| 15273 | Kehler & Kehler Oil Company | Skiatook, OK 74070-3674 | Oil & Gas Operator | Feb 2005 |
| 15274 | Keicher Bros. | Cowlesville, NY 14037 | Gas Operator | Dec 2024 |
| 15275 | Keirus, Inc. | Wichita Falls, TX 76310 | Oil & Gas Operator | May 2026 |
| 15276 | Keisling, H. N. | Pampa, TX 79065 | Oil & Gas Operator | Aug 2015 |
| 15277 | Keith F Walker Oil & Gas Company LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2026 |
| 15278 | Keith Lynn Minerals LLC | Springfield, OH 45503 | Oil & Gas Operator | Dec 2025 |
| 15279 | Keith McClure | Waynesburg, PA 15370-3636 | Oil & Gas Operator | Dec 2025 |
| 15280 | Keith Petroleum Corporation | Houston, TX 77063 | Oil & Gas Operator | Jan 1993 |
| 15281 | Keith W. Burton | | Oil & Gas Operator | Jan 2025 |
| 15282 | Keith Walker O & G Co LLC | | Oil Operator | Jan 2026 |
| 15283 | Keith, Dennis | Waterville, NY 13480 | Gas Operator | Dec 2024 |
| 15284 | Keiths Pumping Service | Douglas, WY 82633 | Oil & Gas Operator | Aug 2003 |
| 15285 | Keito Gas Inc | Reno, OH 45773 | Oil & Gas Operator | Dec 2020 |
| 15286 | Kek Exploration LLC | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 15287 | Kelcas Well Services LTD | Owensboro, KY 42303 | Oil Operator | Dec 2021 |
| 15288 | Kele Exploration, Inc. | | Oil & Gas Operator | Apr 1990 |
| 15289 | Kellco Energy, LTD. | Houston, TX 77057 | Oil & Gas Operator | Nov 2007 |
| 15290 | Kelle Day Oil Producers Inc | Braman, OK 74632-9147 | Oil & Gas Operator | Dec 2023 |
| 15291 | Kelle Lambing Production Co | Braman, OK 74632-0132 | Oil & Gas Operator | Nov 2014 |
| 15292 | Keller Brothers & Co | Nelsonville, OH 45764 | Oil Operator | Dec 2019 |
| 15293 | Keller Estate Leases LLC | Bartlesville, OK 74003-3608 | Oil Operator | Aug 2012 |
| 15294 | Keller Heirs Oil | | Oil Operator | Nov 2025 |
| 15295 | Keller Krude Oil LLC | Glouster, OH 45732 | Oil Operator | Dec 2025 |
| 15296 | Keller, Michael F. & Sharon Kay Ritchie | Alden, NY 14004 | Gas Operator | Dec 2024 |
| 15297 | Kellerville Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | May 2026 |
| 15298 | Kelley Industries Inc | Waynesboro, MS 39367 | Oil & Gas Operator | Jul 2005 |
| 15299 | Kelley James C Estate | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 15300 | Kelley Oil & Gas | McAlester, OK 74570 | Oil & Gas Operator | May 2013 |