| 15501 | Kaneb Operating Company | Dallas, TX 75265-0283 | Oil & Gas Operator | Dec 1995 |
| 15502 | Kaneb Operg Co. LTD. PTN. | | Oil & Gas Operator | Aug 1988 |
| 15503 | Kanik, Anthony S Dba Kanik Oil Co | McLeansboro, IL 62859 | Oil Operator | Dec 2023 |
| 15504 | Kanmap Incorpora | | Oil & Gas Operator | Dec 1995 |
| 15505 | Kano Partners | | Oil Operator | Sep 1989 |
| 15506 | Kanokla Oil & Gas Corporation | Wellington, KS 67152-0444 | Oil & Gas Operator | Feb 2025 |
| 15507 | Kanon Oil LLC | Cameron, TX 76520 | Oil Operator | Jun 2024 |
| 15508 | Kanpetro, Inc. | | Oil Operator | May 1991 |
| 15509 | Kansas Bourse In | | Oil & Gas Operator | Apr 1985 |
| 15510 | Kansas City Oil, LLC | Parkville, MO 64152 | Oil Operator | Sep 2024 |
| 15511 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Jan 2025 |
| 15512 | Kansas Crude Oil | | Oil Operator | Dec 1987 |
| 15513 | Kansas Crude Resources, LLC | | Oil Operator | Jan 2025 |
| 15514 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 15515 | Kansas Energy Company, L.L.C. | Sedan, KS 67361 | Oil & Gas Operator | Jan 2025 |
| 15516 | Kansas Gas Co., Inc. | Wichita Falls, TX 76310 | Gas Operator | Jan 2025 |
| 15517 | Kansas Gas Purchasing | Salina, KS 67401 | Oil & Gas Operator | May 1995 |
| 15518 | Kansas Gas Service | | Oil Operator | Nov 1996 |
| 15519 | Kansas Gas Suppl | | Gas Operator | Sep 1984 |
| 15520 | Kansas Horizon O | | Oil & Gas Operator | Jun 1994 |
| 15521 | Kansas Horizon Oil, Inc. | Windom, KS 67491 | Oil Operator | May 2017 |
| 15522 | Kansas Ka-Tex Joint Venture, A General Partnership | San Antonio, TX 78216 | Gas Operator | Aug 2011 |
| 15523 | Kansas MB Project, LLC | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 15524 | Kansas Natural G | | Oil & Gas Operator | Dec 1996 |
| 15525 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Jan 2025 |
| 15526 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Jan 2025 |
| 15527 | Kansas Oil & Gas Corporation | Woodland HLS, CA 91367 | Oil & Gas Operator | Feb 2001 |
| 15528 | Kansas Oil Company | Kansas City, KS 66117 | Oil Operator | May 1997 |
| 15529 | Kansas Oil Prope | | Oil & Gas Operator | Sep 1991 |
| 15530 | Kansas Oil, Inc. | Chanute, KS 66720 | Oil Operator | Dec 2009 |
| 15531 | Kansas Oil, LLC | | Oil Operator | Jan 2025 |
| 15532 | Kansas Petroleum | | Oil & Gas Operator | Dec 1993 |
| 15533 | Kansas Petroleum, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2007 |
| 15534 | Kansas Power & L | | Oil Operator | Mar 1982 |
| 15535 | Kansas Renewable Resources, LLC | Great Bend, KS 67530 | Oil Operator | Jan 2025 |
| 15536 | Kansas Resource Exploration & Development, LLC | Overland Park, KS 66202 | Oil Operator | Jan 2025 |
| 15537 | Kansas Resource Exploration And Development | | Oil Operator | Apr 2022 |
| 15538 | Kansas Shallow L | | Gas Operator | Oct 1990 |
| 15539 | Kansons Oil Co. | | Oil Operator | Jan 2014 |
| 15540 | Kant Walter F | Lance Creek, WY 82222 | Oil & Gas Operator | Dec 2002 |
| 15541 | Kantor Oil Compa | | Oil Operator | Aug 1994 |
| 15542 | Kantor Oil Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 15543 | Kar Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | May 2025 |
| 15544 | Kara Enterprises Inc | Upton, WY 82730 | Oil Operator | Jul 2013 |
| 15545 | Karbank, Barney | Kansas City, MO 64199 | Oil Operator | Sep 2001 |
| 15546 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | May 2025 |
| 15547 | Kardaleff Steven T | Lawton, OK 73507-8471 | Oil Operator | Mar 2015 |
| 15548 | Karen D. Mott & Mark D. Covert | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2023 |
| 15549 | Karenco Energy, Incorporated | Seguin, TX 78155 | Oil & Gas Operator | Oct 1997 |
| 15550 | Karico GP, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 15551 | Karis Resources, LLC | Tyler, TX 75707 | Oil & Gas Operator | Feb 2019 |
| 15552 | Karlton Terry Oil Company | | Oil Operator | Jan 1991 |
| 15553 | Karper Company, The | Graham, TX 76450 | Oil & Gas Operator | Feb 2003 |
| 15554 | Karper Oil & Gas Corporation | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 15555 | Karst Brothers Oil Co, A General Partnership | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 15556 | Karst Don Well S | | Oil Operator | Oct 1990 |
| 15557 | Karst Incorporated | Fort Worth, TX 76116 | Oil Operator | May 2025 |
| 15558 | Karst, Elmer L | Russell, KS 67665 | Oil Operator | Feb 1990 |
| 15559 | Karsted Operating, LLC | Billings, MT 59102 | Oil Operator | Mar 2025 |
| 15560 | Kas Productions | La Veta, CO 81055 | Oil Operator | Mar 2008 |
| 15561 | Kasan Corp. | Pharr, TX 78577 | Oil & Gas Operator | Sep 1995 |
| 15562 | Kase Energy LLC | Roseville, MN 55113 | Oil Operator | Aug 2006 |
| 15563 | Kash Oil And Gas, Inc | | Oil & Gas Operator | Oct 2020 |
| 15564 | Kash Operating LLC | Maljamar, NM 88264 | Oil Operator | Oct 2024 |
| 15565 | Kasle Energy Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Mar 2017 |
| 15566 | Kasperski Oil Corp | | Oil & Gas Operator | May 2002 |
| 15567 | Kastle Resources Enterprises Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 15568 | Kastman Oil Company | Lubbock, TX 79408 | Oil & Gas Operator | Nov 2012 |
| 15569 | Kastman Oil Company, LLC | Lubbock, TX 79408 | Oil Operator | May 2025 |
| 15570 | Kasturi Properties, LTD. | Dunkirk, NY 14048 | Gas Operator | Dec 2023 |
| 15571 | Kat Energy Corporation | Amarillo, TX 79105 | Gas Operator | Sep 2001 |
| 15572 | Kat Energy, LTD. | Amarillo, TX 79120 | Gas Operator | Jun 2020 |
| 15573 | Katana Resources | | Oil & Gas Operator | Aug 1984 |
| 15574 | Kate F H | Oklahoma City, OK 73122 | Oil & Gas Operator | Jun 2000 |
| 15575 | Katherman Vance E | Casper, WY 82601 | Oil Operator | Dec 2004 |
| 15576 | Kathler Oil Interests | Frisco, TX 75034 | Oil & Gas Operator | May 2025 |
| 15577 | Kato Operating C | | Oil Operator | Aug 1988 |
| 15578 | Kato Operating Company | Bristow, OK 74010 | Oil & Gas Operator | Mar 2015 |
| 15579 | Katsco Energy, Inc. | Round Rock, TX 78664 | Oil & Gas Operator | May 2025 |
| 15580 | Katy Drilling Corporation | Tulsa, OK 74146-3717 | Oil & Gas Operator | Apr 2020 |
| 15581 | Katy Resources Etx, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2011 |
| 15582 | Katy Resources LLC | Arlington, TX 76016 | Oil & Gas Operator | May 2025 |
| 15583 | Katz Joe Oil Acc | | Oil Operator | Oct 1995 |
| 15584 | Katz Oil Co. | San Antonio, TX 78218 | Oil & Gas Operator | Dec 2002 |
| 15585 | Kauffman K P Company Inc | Denver, CO 80202 | Oil & Gas Operator | Mar 1996 |
| 15586 | Kauthar Energy Co., Inc. | | Oil & Gas Operator | Dec 2002 |
| 15587 | Kavanaugh Energy Services, Inc. | | Gas Operator | Feb 2025 |
| 15588 | Kavouras Thomas | Apollo, PA 15613-1108 | Oil & Gas Operator | Dec 2023 |
| 15589 | Kay County Properties | Tulsa, OK 74145 | Oil & Gas Operator | May 1997 |
| 15590 | Kay Dee Oil | | Oil Operator | Jan 2025 |
| 15591 | Kay Jay Oil Co | Artesia, NM 88210 | Oil & Gas Operator | May 2001 |
| 15592 | Kay Lease Service | | Oil Operator | Feb 1981 |
| 15593 | Kay Operating Co. | | Oil Operator | May 1982 |
| 15594 | Kay Production Company Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2025 |
| 15595 | Kay-Lyn Petroleum Co. | | Oil & Gas Operator | Oct 1989 |
| 15596 | Kaye Poth Oil Corp. | Seguin, TX 78155 | Oil & Gas Operator | May 1998 |
| 15597 | Kaye R. McCown | | Oil Operator | Jun 2012 |
| 15598 | Kayuga Co. | Tulsa, OK 74133 | Oil & Gas Operator | May 2025 |
| 15599 | KB Oil | | Oil Operator | Dec 2024 |
| 15600 | KB Oil & Gas | | Oil & Gas Operator | Feb 2025 |