| 16401 | Koontz Oil Company | Nocona, TX 76255 | Oil Operator | Aug 2022 |
| 16402 | Kop-Mor Producti | | Oil Operator | Sep 1992 |
| 16403 | Kopco, Inc. | Caney, KS 67333 | Oil & Gas Operator | Feb 2025 |
| 16404 | Koram Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2006 |
| 16405 | Kore Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 16406 | Korman Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2001 |
| 16407 | Kornblit, Majir | | Oil Operator | Nov 1998 |
| 16408 | Kornye-Tillman Company | Cleburne, TX 76031 | Oil & Gas Operator | Apr 2025 |
| 16409 | Koron Investments, Inc. | Hays, KS 67601 | Oil Operator | Dec 2024 |
| 16410 | Kosarek, Charlie | San Antonio, TX 78213 | Oil & Gas Operator | Oct 2006 |
| 16411 | Kot, Inc. | Lost Springs, KS 66859 | Oil Operator | Aug 2016 |
| 16412 | Kotlowski, Keith | Alden, NY 14004 | Oil & Gas Operator | Dec 2023 |
| 16413 | Kottwitz Oil Co., A General Partnership | | Oil Operator | Jul 2019 |
| 16414 | Kouatli, Aiman M. | Caldwell, TX 77836 | Oil & Gas Operator | Apr 2025 |
| 16415 | Kouplen Steve | Beggs, OK 74421 | Oil & Gas Operator | Oct 2024 |
| 16416 | Kovar Operating, LLC | Victoria, TX 77901 | Oil & Gas Operator | Sep 2021 |
| 16417 | Koven Production Co. | San Antonio, TX 78232 | Oil & Gas Operator | Aug 2003 |
| 16418 | Koyl Oil Inc | | Oil & Gas Operator | Mar 2025 |
| 16419 | Kozaczka, Loretta M. | Gowanda, NY 14070 | Gas Operator | Dec 2023 |
| 16420 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 16421 | KP Oil, LLC | | Oil Operator | Nov 2024 |
| 16422 | KPL Production Company LLC | Oklahoma City, OK 73112-4709 | Oil & Gas Operator | Feb 2017 |
| 16423 | KPR Incorporated | | Oil & Gas Operator | Nov 1988 |
| 16424 | Kracken Operating LLC | Lawrence, KS 66047 | Oil Operator | Dec 2019 |
| 16425 | Kraemer II LLC | | Oil & Gas Operator | Dec 2000 |
| 16426 | Kraft Oil Compan | | Oil Operator | Nov 1994 |
| 16427 | Kraft Oil Company LLC | Gridley, KS 66852 | Oil Operator | Dec 2024 |
| 16428 | Kraft, Jim - Oil Operations | Holyrood, KS 67450 | Oil Operator | Jan 1999 |
| 16429 | Kraft, R L | | Oil Operator | Dec 2023 |
| 16430 | Kraken Development III, LLC | | Oil & Gas Operator | Nov 2021 |
| 16431 | Kraken Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2025 |
| 16432 | Kraker & Martin Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 16433 | Kraker Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 1995 |
| 16434 | Krakrow, Inc. | Spencer, WV 25276-1007 | Oil & Gas Operator | Dec 2021 |
| 16435 | Kram Energy | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Apr 2025 |
| 16436 | Kramer Exploration Co. | Delaware, OH 43015 | Oil & Gas Operator | Dec 2009 |
| 16437 | Kramer Oil Field Service Inc | Wellsville, KS 66092 | Oil Operator | May 2019 |
| 16438 | Kramer Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 16439 | Kramer, Clifford A. | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 1997 |
| 16440 | Kramer, Frank & Ethel FLP | Graham, TX 76450 | Oil & Gas Operator | Sep 2014 |
| 16441 | Kramer, Frank C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |
| 16442 | Kranz, Thomas | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 16443 | Kratos Operating, LLC | Hobbs, NM 88241 | Oil & Gas Operator | Jan 2025 |
| 16444 | Kratzer Oil LLC | | Oil Operator | Oct 2024 |
| 16445 | Krause, Michael J. & Tracy A. | Orchard Park, NY 14127 | Gas Operator | Dec 2023 |
| 16446 | KRB Enterprise, Inc. | | Oil Operator | Feb 2025 |
| 16447 | KRC Operating, LLC | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 2025 |
| 16448 | Krebbs A N & Kay | Pawhuska, OK 74056 | Oil Operator | Jan 2025 |
| 16449 | Krebbs, David B | | Oil & Gas Operator | Jan 2025 |
| 16450 | Krehbiel Oil Co. | McPherson, KS 67460 | Oil & Gas Operator | Oct 1998 |
| 16451 | Krehbiel Oil Com | | Oil & Gas Operator | Mar 1995 |
| 16452 | Krehbiel, Brian | Burrton, KS 67020 | Gas Operator | Dec 2024 |
| 16453 | Krehbiel, Jay | | Oil Operator | Dec 2024 |
| 16454 | Krejci Harry L | | Oil & Gas Operator | Feb 2025 |
| 16455 | Kremco Oil LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2025 |
| 16456 | Kremeier Prod & Operating | | Oil & Gas Operator | Jan 2010 |
| 16457 | Krenek Enterprises, Inc. | Lovelady, TX 75851 | Oil Operator | Apr 2025 |
| 16458 | Krescent Energy Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2013 |
| 16459 | KRF Production Company LLC | Houston, TX 77269 | Oil & Gas Operator | Apr 2025 |
| 16460 | Kriebel Acquisition Co LLC | Clarion, PA 16214-6161 | Oil & Gas Operator | Dec 2024 |
| 16461 | Kriebel Gas Inc | Clarion, PA 16214-0765 | Oil & Gas Operator | Dec 1999 |
| 16462 | Kriebel Minerals Inc | Clarion, PA 16214-6161 | Oil & Gas Operator | Dec 2020 |
| 16463 | Kriebel Natural Gas Co LLC | Clarion, PA 16214-6161 | Oil & Gas Operator | Dec 2024 |
| 16464 | Krier Kirby Oil | | Oil Operator | Dec 1996 |
| 16465 | Krier Oil Oper - | | Oil Operator | Sep 1995 |
| 16466 | Krier Oil Operation | | Oil Operator | Dec 2024 |
| 16467 | Krier, Kirby Oil, Inc. | Claflin, KS 67525 | Oil Operator | Dec 2024 |
| 16468 | Kriken Oil & Gas | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Jul 2005 |
| 16469 | Kriken Oil & Gas, Inc. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Apr 2025 |
| 16470 | Kristen Oil And Gas, Inc. | Edna, TX 77957 | Oil & Gas Operator | Apr 2025 |
| 16471 | Kriti Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2012 |
| 16472 | Kriti Te Energy, Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 2017 |
| 16473 | Krocan Energy Corporation | Bowling Green, KY 42102 | Oil & Gas Operator | Apr 2025 |
| 16474 | Krog Partners, LLC | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 16475 | Krog, Peter L. & Kim R. | Orchard Park, NY 14127 | Gas Operator | Dec 2023 |
| 16476 | Kroh Operating LLC | Fort Worth, TX 76114 | Oil & Gas Operator | Apr 2025 |
| 16477 | Kroll Energy LLC | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2024 |
| 16478 | Krot Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 16479 | Krotje, Dorothy C. | Franklinville, NY 14737 | Gas Operator | Dec 2023 |
| 16480 | Krotzer Oil Company | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2025 |
| 16481 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 16482 | Kruckenberg & SC | | Oil & Gas Operator | Sep 1993 |
| 16483 | Kruckenberg & Scott | Isabel, KS 67065 | Oil Operator | Dec 2011 |
| 16484 | Krueger, A. H., Jr. | Hays, KS 67601 | Oil Operator | Jul 1993 |
| 16485 | Krug, Donald H | Russell, KS 67665 | Oil Operator | Dec 2024 |
| 16486 | Krumme Oil Company LLP | Bristow, OK 74010 | Oil & Gas Operator | Jan 2025 |
| 16487 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 16488 | Krummrich Engineering Corporation | | Oil & Gas Operator | Dec 2024 |
| 16489 | Ksabe Energy Partners, LLC | Oklahoma City, OK 73106 | Oil Operator | Apr 2025 |
| 16490 | KSC Oil | | Oil Operator | Nov 2024 |
| 16491 | KSM Energy Inc | Pittsburgh, PA 15238-3156 | Gas Operator | Dec 2024 |
| 16492 | KST Oil & Gas Co Inc | Tallmadge, OH 44278-1142-1142 | Oil & Gas Operator | Dec 1995 |
| 16493 | Kstone Energy, LLC | Oklahoma City, OK 73106 | Oil Operator | Apr 2025 |
| 16494 | KSW Operating LLC | Bartlesville, OK 74006 | Oil & Gas Operator | Mar 2015 |
| 16495 | KT Energy Inc | Enid, OK 73702-2365 | Oil & Gas Operator | Jan 2025 |
| 16496 | KT Investments Inc | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2025 |
| 16497 | KT Operating Company LLC | Dallas, TX 75231 | Oil & Gas Operator | Feb 2010 |
| 16498 | KT Resources LLC | | Oil & Gas Operator | Mar 2025 |
| 16499 | KTC Oil Enterprises, LLC | Dallas, TX 75247 | Oil & Gas Operator | Apr 2025 |
| 16500 | KTM Operating LLC | | Oil & Gas Operator | Dec 2024 |