| 15001 | Kaiser Operating, LLC | | Oil & Gas Operator | Mar 2024 |
| 15002 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 15003 | Kaiser-Francis Oil | | Oil Operator | Nov 1995 |
| 15004 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | May 2024 |
| 15005 | Kal Energy Inc | Oklahoma City, OK 73116-3606 | Oil Operator | Nov 2014 |
| 15006 | Kal Oil Operations | | Oil Operator | Jan 2024 |
| 15007 | Kala Oil Company | Sundown, TX 79372 | Oil & Gas Operator | May 2024 |
| 15008 | Kalda Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1994 |
| 15009 | Kaler Energy Corp. | Boerne, TX 78006 | Oil & Gas Operator | May 2024 |
| 15010 | Kaler Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2023 |
| 15011 | Kalkaska Oilfield Services Inc | | Oil Operator | Aug 2006 |
| 15012 | Kalkman Oil Corporation | Duncan, OK 73533 | Oil & Gas Operator | Jan 2024 |
| 15013 | Kallina, Carlton J. | Houston, TX 77269 | Gas Operator | May 2024 |
| 15014 | Kalos Corporation | Tyler, TX 75701 | Oil & Gas Operator | May 2024 |
| 15015 | Kamc Oil & Gas LLC | Queen Creek, AZ 85142 | Oil Operator | Jan 2011 |
| 15016 | Kamco Hot Oil Service Inc | Cement, OK 73017-0115 | Oil & Gas Operator | Feb 2024 |
| 15017 | Kamco Limited | Salt Lake City, UT 84105 | Oil Operator | Sep 2016 |
| 15018 | Kamlok Oil & Gas, Inc. | Houston, TX 77240 | Oil & Gas Operator | Jun 1996 |
| 15019 | Kamlok, Inc. | | Oil Operator | Nov 1991 |
| 15020 | Kammer, Walter A. | Holland, NY 14080 | Gas Operator | Dec 2022 |
| 15021 | Kampresco Energy, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
| 15022 | Kan-Cal Enterpri | | Oil Operator | Dec 1988 |
| 15023 | Kan-Tex Drilling Corp. | | Oil Operator | Dec 1981 |
| 15024 | Kan-Texco Incorp | | Oil & Gas Operator | Dec 1994 |
| 15025 | Kana Resources, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Aug 2003 |
| 15026 | Kanaco Oil Company | | Oil Operator | Dec 2019 |
| 15027 | Kanalta Resources, LTD. | Yates Center, KS 66783 | Oil Operator | Jan 1998 |
| 15028 | Kanan Oil & Gas, Inc. | | Oil & Gas Operator | Oct 1987 |
| 15029 | Kaneb Energy Company | | Oil & Gas Operator | Jan 1986 |
| 15030 | Kaneb Oil & Gas | | Oil & Gas Operator | Oct 1987 |
| 15031 | Kaneb Oil & Gas Company | | Oil & Gas Operator | Nov 1985 |
| 15032 | Kaneb Operating Company | Dallas, TX 75265-0283 | Oil & Gas Operator | Dec 1995 |
| 15033 | Kaneb Operg Co. LTD. PTN. | | Oil & Gas Operator | Aug 1988 |
| 15034 | Kanmap Incorpora | | Oil & Gas Operator | Dec 1995 |
| 15035 | Kano Partners | | Oil Operator | Sep 1989 |
| 15036 | Kanok Energy LLC | Henryetta, OK 74437 | Gas Operator | Jan 2024 |
| 15037 | Kanokla Oil & Gas Corporation | Wellington, KS 67152-0444 | Oil & Gas Operator | Jan 2024 |
| 15038 | Kanon Oil LLC | Cameron, TX 76520 | Oil Operator | May 2024 |
| 15039 | Kanpetro, Inc. | | Oil Operator | May 1991 |
| 15040 | Kansas City Oil, LLC | Parkville, MO 64152 | Oil Operator | Jul 2022 |
| 15041 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Jan 2024 |
| 15042 | Kansas Crude Oil | | Oil Operator | Dec 1987 |
| 15043 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 15044 | Kansas Energy Company, L.L.C. | Sedan, KS 67361 | Oil & Gas Operator | Jan 2024 |
| 15045 | Kansas Gas Co., Inc. | Wichita Falls, TX 76310 | Gas Operator | Jan 2024 |
| 15046 | Kansas Gas Purchasing | Salina, KS 67401 | Oil & Gas Operator | May 1995 |
| 15047 | Kansas Gas Service | | Oil Operator | Nov 1996 |
| 15048 | Kansas Gas Suppl | | Gas Operator | Sep 1984 |
| 15049 | Kansas Horizon O | | Oil & Gas Operator | Jun 1994 |
| 15050 | Kansas Horizon Oil, Inc. | Windom, KS 67491 | Oil Operator | May 2017 |
| 15051 | Kansas Ka-Tex Joint Venture, A General Partnership | San Antonio, TX 78216 | Gas Operator | Jan 2024 |
| 15052 | Kansas MB Project, LLC | Skiatook, OK 74070 | Oil & Gas Operator | Dec 2023 |
| 15053 | Kansas Natural G | | Oil & Gas Operator | Dec 1996 |
| 15054 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Jan 2024 |
| 15055 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Jan 2024 |
| 15056 | Kansas Oil & Gas Corporation | Woodland HLS, CA 91367 | Oil & Gas Operator | Feb 2001 |
| 15057 | Kansas Oil Company | Kansas City, KS 66117 | Oil Operator | May 1997 |
| 15058 | Kansas Oil Prope | | Oil & Gas Operator | Sep 1991 |
| 15059 | Kansas Oil, Inc. | Chanute, KS 66720 | Oil Operator | Dec 2009 |
| 15060 | Kansas Oil, LLC | | Oil Operator | Jan 2024 |
| 15061 | Kansas Petroleum | | Oil & Gas Operator | Dec 1993 |
| 15062 | Kansas Petroleum, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2007 |
| 15063 | Kansas Power & L | | Oil Operator | Mar 1982 |
| 15064 | Kansas Renewable Resources, LLC | Great Bend, KS 67530 | Oil Operator | Dec 2023 |
| 15065 | Kansas Resource Exploration & Development, LLC | Overland Park, KS 66202 | Oil Operator | Jan 2024 |
| 15066 | Kansas Resource Exploration And Development | | Oil Operator | Apr 2022 |
| 15067 | Kansons Oil Co. | | Oil Operator | Jan 2014 |
| 15068 | Kant Walter F | Lance Creek, WY 82222 | Oil & Gas Operator | Dec 2002 |
| 15069 | Kantor Oil Compa | | Oil Operator | Aug 1994 |
| 15070 | Kantor Oil Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 15071 | Kar Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | May 2024 |
| 15072 | Kara Enterprises Inc | Upton, WY 82730 | Oil Operator | Jul 2013 |
| 15073 | Karbank, Barney | Kansas City, MO 64199 | Oil Operator | Sep 2001 |
| 15074 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | May 2024 |
| 15075 | Kardaleff Steven T | Lawton, OK 73507-8471 | Oil Operator | Mar 2015 |
| 15076 | Karen D. Mott & Mark D. Covert | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2022 |
| 15077 | Karenco Energy, Incorporated | Seguin, TX 78155 | Oil & Gas Operator | Oct 1997 |
| 15078 | Karico GP, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2024 |
| 15079 | Karis Resources, LLC | Tyler, TX 75707 | Oil & Gas Operator | Feb 2019 |
| 15080 | Karlton Terry Oil Company | | Oil Operator | Jan 1991 |
| 15081 | Karper Company, The | Graham, TX 76450 | Oil & Gas Operator | Feb 2003 |
| 15082 | Karper Oil & Gas Corporation | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 15083 | Karst Brothers Oil Co, A General Partnership | Russell, KS 67665 | Oil Operator | Jan 2024 |
| 15084 | Karst Don Well S | | Oil Operator | Oct 1990 |
| 15085 | Karst Incorporated | Fort Worth, TX 76116 | Oil Operator | May 2024 |
| 15086 | Karst, Elmer L | Russell, KS 67665 | Oil Operator | Feb 1990 |
| 15087 | Karsted Operating, LLC | Billings, MT 59102 | Oil Operator | Jan 2024 |
| 15088 | Kas Productions | La Veta, CO 81055 | Oil Operator | Mar 2008 |
| 15089 | Kase Energy LLC | Roseville, MN 55113 | Oil Operator | Aug 2006 |
| 15090 | Kash Oil And Gas, Inc | | Oil & Gas Operator | Oct 2020 |
| 15091 | Kash Operating LLC | Maljamar, NM 88264 | Oil & Gas Operator | Sep 2023 |
| 15092 | Kasle Energy Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Mar 2017 |
| 15093 | Kasperski Oil Corp | | Oil & Gas Operator | May 2002 |
| 15094 | Kastle Resources Enterprises Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 15095 | Kastman Oil Company | Lubbock, TX 79408 | Oil & Gas Operator | Nov 2012 |
| 15096 | Kastman Oil Company, LLC | Lubbock, TX 79408 | Oil Operator | May 2024 |
| 15097 | Kasturi Properties, LTD. | Dunkirk, NY 14048 | Gas Operator | Dec 2022 |
| 15098 | Kat Energy Corporation | Amarillo, TX 79105 | Gas Operator | Sep 2001 |
| 15099 | Kat Energy, LTD. | Amarillo, TX 79120 | Gas Operator | Jun 2020 |
| 15100 | Katana Resources | | Oil & Gas Operator | Aug 1984 |