| 101 | Ellinwood Tank Service, Inc. | Chase, KS 67524 | Oil Operator | Jul 2022 |
| 102 | Empire Explorati | | Oil Operator | Dec 1996 |
| 103 | Empire Exploration Inc | Wichita, KS 67202 | Oil & Gas Operator | Jul 1997 |
| 104 | Energy Explorati | | Oil & Gas Operator | Oct 1993 |
| 105 | Energy Reserves | | Oil & Gas Operator | Oct 1993 |
| 106 | Energy Three Inc. | Jackson, MS 39211 | Oil & Gas Operator | Feb 2026 |
| 107 | Enterprise Marke | | Oil & Gas Operator | Oct 1992 |
| 108 | Enterprise Oil Marketing Corp. | Little Rock, AR 72206 | Oil Operator | Sep 1998 |
| 109 | Evans Energy, LLC | Mount Hope, KS 67108 | Oil & Gas Operator | Feb 2026 |
| 110 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Feb 2026 |
| 111 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 112 | Falcon Explorati | | Oil & Gas Operator | Apr 1995 |
| 113 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Feb 2026 |
| 114 | Fell Oil & Gas C | | Oil Operator | Oct 1991 |
| 115 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Jun 2026 |
| 116 | Four States Petr | | Oil & Gas Operator | Nov 1990 |
| 117 | Four-Way Oper In | | Oil Operator | Aug 1994 |
| 118 | Four-Way Operating, Inc. | Great Bend, KS 67530 | Oil Operator | Sep 2013 |
| 119 | Fox, Don | Chase, KS 67524 | Oil & Gas Operator | Jul 2006 |
| 120 | Further Developm | | Oil Operator | Apr 1986 |
| 121 | G L M Company | | Oil Operator | Feb 2026 |
| 122 | Gable Oil Co. | Chase, KS 67524 | Oil Operator | Sep 1998 |
| 123 | Garfield Oil Com | | Gas Operator | Jan 1984 |
| 124 | Gas Chasers Inc. | Claflin, KS 67525 | Gas Operator | Dec 2009 |
| 125 | Geoson Oil Compa | | Oil Operator | Jun 1984 |
| 126 | Gilbert-Stewart Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 127 | Gilmore Tank Service | Chase, KS 67524 | Oil Operator | Apr 2005 |
| 128 | Givens, Bret | Hutchinson, KS 67501 | Oil Operator | Oct 2025 |
| 129 | Glacier Petroleu | | Oil & Gas Operator | Nov 1995 |
| 130 | Globe Exploratio | | Oil & Gas Operator | Jun 1995 |
| 131 | GPS Oil Lease Operations | Inman, KS 67546 | Oil Operator | Jun 2001 |
| 132 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 133 | GRB Resources | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2004 |
| 134 | Gusher Oil | | Oil Operator | Jul 2004 |
| 135 | H & B Petroleum Corp. | Hutchinson, KS 67504 | Oil & Gas Operator | Feb 2026 |
| 136 | Haile, Guy W. | Sterling, KS 67579 | Oil Operator | Jan 2026 |
| 137 | Hallwood Petrole | | Oil & Gas Operator | Apr 1999 |
| 138 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2026 |
| 139 | Hamby Oil LLC | Ellinwood, KS 67526 | Oil Operator | May 2013 |
| 140 | Harms Petroleum | | Oil & Gas Operator | May 1991 |
| 141 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 142 | Hawkins Oil, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 143 | Hazen, Ty Anthony | Lyons, KS 67554 | Oil Operator | Feb 2026 |
| 144 | Hellar Drilling | | Oil & Gas Operator | Jan 1994 |
| 145 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Feb 2026 |
| 146 | Hiebert & Wedel | | Oil & Gas Operator | May 1995 |
| 147 | Hinkle Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 148 | Hoehn Oil | Wellsville, KS 66092 | Oil Operator | Oct 1998 |
| 149 | Hoffman Oil, Inc. | Claflin, KS 67525 | Oil Operator | Jan 2026 |
| 150 | Hoffman Resources LLC | Hoisington, KS 67544 | Oil & Gas Operator | Feb 2026 |
| 151 | Horizon Oil & Ga | | Oil & Gas Operator | Jan 1992 |
| 152 | Howell Oil Compa | | Oil & Gas Operator | Aug 1995 |
| 153 | Hugoton Energy C | | Oil & Gas Operator | Feb 2004 |
| 154 | Hummon Corp | Medicine Lodge, KS 67104 | Oil & Gas Operator | Feb 2026 |
| 155 | Hupfer Oil & Gas | Hays, KS 67601 | Oil & Gas Operator | Dec 1993 |
| 156 | Hupfer Operating, Inc. | Shawnee, KS 66203 | Oil & Gas Operator | Dec 2019 |
| 157 | Imperial Oil Com | | Oil & Gas Operator | Dec 1992 |
| 158 | Infinity Oil, Inc. | Hays, KS 67601 | Oil Operator | Feb 2026 |
| 159 | Ipas Oil Company LLC | Pratt, KS 67124 | Oil Operator | Dec 2019 |
| 160 | J B Gas Detectors, Inc. | Pratt, KS 67124 | Oil Operator | Oct 1994 |
| 161 | J. C. Oil Company | Odessa, TX 79766 | Oil & Gas Operator | Mar 2015 |
| 162 | Jantz & Associat | | Oil & Gas Operator | Feb 1991 |
| 163 | JD Production Co | Waco, TX 76702 | Oil & Gas Operator | Dec 2009 |
| 164 | JFW Incorporated | Plevna, KS 67568 | Oil & Gas Operator | Oct 2006 |
| 165 | JML Company | | Oil Operator | May 2006 |
| 166 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 167 | John Roy Evans Oil Company LLC | Claflin, KS 67525 | Oil Operator | Feb 2026 |
| 168 | Johnson, A.G. | Shawnee, OK 74801 | Oil Operator | Oct 1999 |
| 169 | K & G Oil Incorp | | Oil Operator | Mar 1988 |
| 170 | K & K Oil | Chase, KS 67524 | Oil & Gas Operator | Oct 2019 |
| 171 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Feb 2026 |
| 172 | K N Energy Inc | Lakewood, CO 80228 | Oil & Gas Operator | Nov 2000 |
| 173 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Mar 2026 |
| 174 | K.J.S. Oil | | Oil & Gas Operator | Feb 2026 |
| 175 | Kahan & Associates Inc | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2026 |
| 176 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 177 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Jun 2026 |
| 178 | Kal Oil Operations | | Oil Operator | Oct 2025 |
| 179 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 180 | Kansas Horizon O | | Oil & Gas Operator | Jun 1994 |
| 181 | Kansas Horizon Oil, Inc. | Windom, KS 67491 | Oil Operator | May 2017 |
| 182 | Kansas Petroleum | | Oil & Gas Operator | Dec 1993 |
| 183 | Kenbill Oil Comp | | Oil Operator | Jun 1994 |
| 184 | Kewanee Oil Comp | | Oil & Gas Operator | Nov 1996 |
| 185 | Kirkman W L Inco | | Oil & Gas Operator | Dec 1994 |
| 186 | Kizzar Well Servicing, Inc. | Chase, KS 67524 | Oil Operator | Feb 2026 |
| 187 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2026 |
| 188 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 189 | Kodiak Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Feb 2026 |
| 190 | Koehn Alfred D | | Oil & Gas Operator | Sep 1994 |
| 191 | Koehn Eldon R | | Oil Operator | Dec 2009 |
| 192 | Koehn Radell W | | Oil Operator | Dec 2009 |
| 193 | Koehn, Alfred D.(Deceased) | Galva, KS 67443 | Oil Operator | Mar 1998 |
| 194 | Koehn, Radell W. And Austin Koehn & Morgan Koehn | Galva, KS 67443 | Oil Operator | Feb 2026 |
| 195 | Kop-Mor Producti | | Oil Operator | Sep 1992 |
| 196 | Kratzer Oil LLC | | Oil Operator | Dec 2025 |
| 197 | Krehbiel Oil Com | | Oil & Gas Operator | Mar 1995 |
| 198 | Krehbiel, Jay | | Oil Operator | Feb 2026 |
| 199 | Krier, Kirby Oil, Inc. | Claflin, KS 67525 | Oil Operator | Feb 2026 |
| 200 | L & B Oil | Longton, KS 67352 | Oil Operator | Dec 2019 |