| 15401 | Ka-Lyn Oil & Gas, Inc. | | Oil & Gas Operator | Jul 1990 |
| 15402 | Kabco Oil & Gas Company | Longview, TX 75604 | Oil & Gas Operator | Jun 2018 |
| 15403 | Kabco Production | | Oil & Gas Operator | Sep 1999 |
| 15404 | Kabco-Pennington | | Oil & Gas Operator | Oct 1996 |
| 15405 | Kachina Exploration Inc | Cheyenne, WY 82003 | Oil & Gas Operator | Jul 2000 |
| 15406 | Kachina Oil & Gas Inc. | Austin, TX 78766 | Oil & Gas Operator | Jul 2002 |
| 15407 | Kachina Oil Comp | | Oil & Gas Operator | Jan 1988 |
| 15408 | Kachina Oil Company | Wichita, KS 67202 | Gas Operator | Sep 1998 |
| 15409 | Kadane & Sons | | Oil & Gas Operator | May 1978 |
| 15410 | Kadane Corporation | Dallas, TX 75205 | Oil & Gas Operator | Jun 2025 |
| 15411 | Kadane Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 1998 |
| 15412 | Kahan & Assoc In | | Oil Operator | Dec 1996 |
| 15413 | Kahan And Associates, Inc | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2025 |
| 15414 | Kahan Louis | Tulsa, OK 74101 | Oil & Gas Operator | May 1994 |
| 15415 | Kahlenberg Oil And Gas LLC | Conroe, TX 77304 | Oil Operator | Jun 2025 |
| 15416 | Kahn George Operating Co | Seminole, OK 74818 | Oil & Gas Operator | Nov 2000 |
| 15417 | Kaico Petroleum, L.L.C. | Argyle, TX 76226 | Oil Operator | Oct 2018 |
| 15418 | Kain Petroleum Company | Pearsall, TX 78061 | Gas Operator | May 2011 |
| 15419 | Kain Petroleum, LLC | Pearsall, TX 78061 | Oil & Gas Operator | Jun 2025 |
| 15420 | Kainz, David R. | Ottawa, KS 66067 | Oil Operator | Aug 2009 |
| 15421 | Kaiser Aluminum Exploration Co | | Oil & Gas Operator | Dec 1986 |
| 15422 | Kaiser Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1990 |
| 15423 | Kaiser Farms | Edmond, OK 73025-9489 | Oil & Gas Operator | Mar 2025 |
| 15424 | Kaiser Investments | Sand Springs, OK 74063 | Oil & Gas Operator | Sep 2003 |
| 15425 | Kaiser Oil (U.S.) LTD. | | Oil & Gas Operator | Apr 1983 |
| 15426 | Kaiser Operating, LLC | | Oil & Gas Operator | Apr 2025 |
| 15427 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 15428 | Kaiser-Francis Oil | | Oil Operator | Nov 1995 |
| 15429 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Jun 2025 |
| 15430 | Kal Energy Inc | Oklahoma City, OK 73116-3606 | Oil Operator | Nov 2014 |
| 15431 | Kal Oil Operations | | Oil Operator | Dec 2024 |
| 15432 | Kala Oil Company | Sundown, TX 79372 | Oil & Gas Operator | Jun 2025 |
| 15433 | Kalda Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1994 |
| 15434 | Kaler Energy Corp. | Boerne, TX 78006 | Oil & Gas Operator | Jun 2025 |
| 15435 | Kaler Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 15436 | Kalkaska Oilfield Services Inc | | Oil Operator | Aug 2006 |
| 15437 | Kalkman Oil Corporation | Duncan, OK 73533 | Oil & Gas Operator | Mar 2025 |
| 15438 | Kallina, Carlton J. | Houston, TX 77269 | Gas Operator | Jun 2025 |
| 15439 | Kalos Corporation | Tyler, TX 75701 | Oil & Gas Operator | Jun 2025 |
| 15440 | Kamc Oil & Gas LLC | Queen Creek, AZ 85142 | Oil Operator | Jan 2011 |
| 15441 | Kamco Hot Oil Service Inc | Cement, OK 73017 | Oil & Gas Operator | Apr 2025 |
| 15442 | Kamco Limited | Salt Lake City, UT 84105 | Oil Operator | Sep 2016 |
| 15443 | Kamlok Oil & Gas, Inc. | Houston, TX 77240 | Oil & Gas Operator | Jun 1996 |
| 15444 | Kamlok, Inc. | | Oil Operator | Nov 1991 |
| 15445 | Kammer, Walter A. | Holland, NY 14080 | Gas Operator | Dec 2023 |
| 15446 | Kampresco Energy, LLC | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 15447 | Kan-Cal Enterpri | | Oil Operator | Dec 1988 |
| 15448 | Kan-Tex Drilling Corp. | | Oil Operator | Dec 1981 |
| 15449 | Kan-Texco Incorp | | Oil & Gas Operator | Dec 1994 |
| 15450 | Kana Resources, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Aug 2003 |
| 15451 | Kanaco Oil Company | | Oil Operator | Dec 2019 |
| 15452 | Kanalta Resources, LTD. | Yates Center, KS 66783 | Oil Operator | Jan 1998 |
| 15453 | Kanan Oil & Gas, Inc. | | Oil & Gas Operator | Oct 1987 |
| 15454 | Kandletop Operating, LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Apr 2025 |
| 15455 | Kaneb Energy Company | | Oil & Gas Operator | Jan 1986 |
| 15456 | Kaneb Oil & Gas | | Oil & Gas Operator | Oct 1987 |
| 15457 | Kaneb Oil & Gas Company | | Oil & Gas Operator | Nov 1985 |
| 15458 | Kaneb Operating Company | Dallas, TX 75265-0283 | Oil & Gas Operator | Dec 1995 |
| 15459 | Kaneb Operg Co. LTD. PTN. | | Oil & Gas Operator | Aug 1988 |
| 15460 | Kanik, Anthony S Dba Kanik Oil Co | McLeansboro, IL 62859 | Oil Operator | Dec 2023 |
| 15461 | Kanmap Incorpora | | Oil & Gas Operator | Dec 1995 |
| 15462 | Kano Partners | | Oil Operator | Sep 1989 |
| 15463 | Kanokla Oil & Gas Corporation | Wellington, KS 67152-0444 | Oil & Gas Operator | Mar 2025 |
| 15464 | Kanon Oil LLC | Cameron, TX 76520 | Oil Operator | Jun 2024 |
| 15465 | Kanpetro, Inc. | | Oil Operator | May 1991 |
| 15466 | Kansas Bourse In | | Oil & Gas Operator | Apr 1985 |
| 15467 | Kansas City Oil, LLC | Parkville, MO 64152 | Oil Operator | Sep 2024 |
| 15468 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Feb 2025 |
| 15469 | Kansas Crude Oil | | Oil Operator | Dec 1987 |
| 15470 | Kansas Crude Resources, LLC | | Oil Operator | Feb 2025 |
| 15471 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 15472 | Kansas Energy Company, L.L.C. | Sedan, KS 67361 | Oil & Gas Operator | Feb 2025 |
| 15473 | Kansas Gas Co., Inc. | Wichita Falls, TX 76310 | Gas Operator | Feb 2025 |
| 15474 | Kansas Gas Purchasing | Salina, KS 67401 | Oil & Gas Operator | May 1995 |
| 15475 | Kansas Gas Service | | Oil Operator | Nov 1996 |
| 15476 | Kansas Gas Suppl | | Gas Operator | Sep 1984 |
| 15477 | Kansas Horizon O | | Oil & Gas Operator | Jun 1994 |
| 15478 | Kansas Horizon Oil, Inc. | Windom, KS 67491 | Oil Operator | May 2017 |
| 15479 | Kansas Ka-Tex Joint Venture, A General Partnership | San Antonio, TX 78216 | Gas Operator | Aug 2011 |
| 15480 | Kansas MB Project, LLC | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 15481 | Kansas Natural G | | Oil & Gas Operator | Dec 1996 |
| 15482 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Feb 2025 |
| 15483 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Feb 2025 |
| 15484 | Kansas Oil & Gas Corporation | Woodland HLS, CA 91367 | Oil & Gas Operator | Feb 2001 |
| 15485 | Kansas Oil Company | Kansas City, KS 66117 | Oil Operator | May 1997 |
| 15486 | Kansas Oil Prope | | Oil & Gas Operator | Sep 1991 |
| 15487 | Kansas Oil, Inc. | Chanute, KS 66720 | Oil Operator | Dec 2009 |
| 15488 | Kansas Oil, LLC | | Oil Operator | Feb 2025 |
| 15489 | Kansas Petroleum | | Oil & Gas Operator | Dec 1993 |
| 15490 | Kansas Petroleum, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2007 |
| 15491 | Kansas Power & L | | Oil Operator | Mar 1982 |
| 15492 | Kansas Renewable Resources, LLC | Great Bend, KS 67530 | Oil Operator | Feb 2025 |
| 15493 | Kansas Resource Exploration & Development, LLC | Overland Park, KS 66202 | Oil Operator | Feb 2025 |
| 15494 | Kansas Resource Exploration And Development | | Oil Operator | Apr 2022 |
| 15495 | Kansas Shallow L | | Gas Operator | Oct 1990 |
| 15496 | Kansons Oil Co. | | Oil Operator | Jan 2014 |
| 15497 | Kant Walter F | Lance Creek, WY 82222 | Oil & Gas Operator | Dec 2002 |
| 15498 | Kantor Oil Compa | | Oil Operator | Aug 1994 |
| 15499 | Kantor Oil Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 15500 | Kar Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2025 |