| 101 | Jay Boy Oil Inco | | Oil & Gas Operator | May 1992 |
| 102 | Johnson, A.G. | Shawnee, OK 74801 | Oil Operator | Oct 1999 |
| 103 | Jolen Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 104 | Jones Frank Oil | | Oil Operator | May 1988 |
| 105 | Jones, Cal | Canton, KS 67428 | Oil & Gas Operator | Mar 2002 |
| 106 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Nov 2025 |
| 107 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 108 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 109 | Kansas Bourse In | | Oil & Gas Operator | Apr 1985 |
| 110 | Kansas Horizon O | | Oil & Gas Operator | Jun 1994 |
| 111 | Kera-Oil | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 112 | Kodiak Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Sep 2025 |
| 113 | Koehn Alfred D | | Oil & Gas Operator | Sep 1994 |
| 114 | Koehn Eldon R | | Oil Operator | Dec 2009 |
| 115 | Koehn Radell W | | Oil Operator | Dec 2009 |
| 116 | Koehn, Alfred D.(Deceased) | Galva, KS 67443 | Oil Operator | Mar 1998 |
| 117 | Koehn, Carolyn | Galva, KS 67443 | Oil Operator | Sep 2025 |
| 118 | Koehn, Radell W. And Austin Koehn & Morgan Koehn | Galva, KS 67443 | Oil Operator | Sep 2025 |
| 119 | Koehn, Roger D. | Galva, KS 67443 | Oil Operator | Apr 1998 |
| 120 | Krehbiel Oil Co. | McPherson, KS 67460 | Oil & Gas Operator | Oct 1998 |
| 121 | Krehbiel Oil Com | | Oil & Gas Operator | Mar 1995 |
| 122 | Krehbiel, Jay | | Oil Operator | Sep 2025 |
| 123 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 124 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 125 | Law Production, Inc. | McPherson, KS 67460 | Oil Operator | Nov 2007 |
| 126 | Lawrence & Bush | Lawton, OK 73507 | Oil Operator | Dec 1995 |
| 127 | Lawrence & Bush, Inc. | Pampa, TX 79065 | Oil Operator | Oct 1998 |
| 128 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 129 | Lewis Energy LLC | Tulsa, OK 74159 | Oil Operator | Oct 2025 |
| 130 | Lewis Oil & Gas Of Galva, Inc. | Galva, KS 67443 | Oil Operator | Sep 2025 |
| 131 | Litan, David | Wichita, KS 67218 | Oil Operator | Jun 1990 |
| 132 | Little Chief Energy Corporation | Independence, KS 67301 | Oil Operator | Oct 2025 |
| 133 | Loewen E K | | Oil Operator | Mar 1986 |
| 134 | Loewen Operator | | Oil & Gas Operator | Mar 1995 |
| 135 | Loewen Operator, Inc. | Canton, KS 67428 | Oil & Gas Operator | Sep 2025 |
| 136 | M & D Oil And Gas, LLC | Sterling, KS 67579 | Oil Operator | Sep 2025 |
| 137 | M & K Oil Company | Gillette, WY 82717-3470 | Oil & Gas Operator | Nov 2025 |
| 138 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Nov 2025 |
| 139 | McGinness Oil Co | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 140 | Melland Drilling | | Oil Operator | Nov 1992 |
| 141 | Merritt Oil Comp | | Oil Operator | Jan 1990 |
| 142 | Mid-American Hyd | | Oil & Gas Operator | Jan 1992 |
| 143 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Sep 2025 |
| 144 | Milburn, Harold J. | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2003 |
| 145 | N-B Company Inco | | Oil & Gas Operator | Apr 1992 |
| 146 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 147 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 148 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 149 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 150 | North American D | | Oil & Gas Operator | Sep 1986 |
| 151 | Ocfiw Oil Company, Inc. | Hartington, NE 68739 | Oil & Gas Operator | Dec 2009 |
| 152 | Oil Partners, LLC | Salina, KS 67401 | Oil Operator | Sep 2025 |
| 153 | Okmar Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 154 | Olympic Oil, Inc. | Hutchinson, KS 67502 | Oil & Gas Operator | Jul 2025 |
| 155 | Orca Operating Company LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2025 |
| 156 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 157 | Petro Energies I | | Oil & Gas Operator | Apr 1991 |
| 158 | Petro Energies, Inc. | Burrton, KS 67020 | Gas Operator | Jun 2014 |
| 159 | Petroleum Develo | | Oil Operator | Sep 1986 |
| 160 | Phillips Petrole | | Oil & Gas Operator | May 1995 |
| 161 | Plum Creek Energy, LLC | Ellinwood, KS 67526 | Oil & Gas Operator | Sep 2025 |
| 162 | Premier Oil & Exploration Inc | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2025 |
| 163 | Producers Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 164 | R J Operating Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2025 |
| 165 | Rama Operating Company Inc | Stafford, KS 67578 | Oil & Gas Operator | Nov 2025 |
| 166 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 167 | Range Oil Compan | | Oil & Gas Operator | Nov 1995 |
| 168 | Ratzlaff, Steven | Galva, KS 67443 | Oil Operator | Dec 1996 |
| 169 | Relative Energy, Inc. | Lindsborg, KS 67456 | Oil Operator | May 2025 |
| 170 | Resource Operations Inc | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 171 | Ressler Well Service, Inc. | Burrton, KS 67020 | Oil & Gas Operator | Sep 2025 |
| 172 | Rhea, Andrew | Galva, KS 67443 | Oil & Gas Operator | Aug 2025 |
| 173 | Rhoads, Mark | Seminole, OK 74868 | Oil Operator | Sep 1999 |
| 174 | Rice Engineering | | Oil & Gas Operator | Jul 1988 |
| 175 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | Sep 2025 |
| 176 | Rierson, Joe | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 177 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 178 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 179 | Rosel Energy, Inc. | Liberal, KS 67901 | Oil & Gas Operator | Jul 2004 |
| 180 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 181 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Sep 2025 |
| 182 | S & H Oilfield Enterprises | | Oil & Gas Operator | Sep 2023 |
| 183 | S & S Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2016 |
| 184 | Salt Fork Produc | | Oil Operator | Oct 1987 |
| 185 | San Pet Inc | McPherson, KS 67460 | Oil Operator | May 1997 |
| 186 | Schmidt Kermit O | | Oil & Gas Operator | Sep 1995 |
| 187 | Schmidt, Kermit | | Oil & Gas Operator | Dec 2009 |
| 188 | Schmidt, Norman D. | Galva, KS 67443 | Gas Operator | Oct 1997 |
| 189 | Schmidt, Terry D. | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 190 | Schmidt, Tracy | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 191 | Schmitt Carmen I | | Oil Operator | Dec 1996 |
| 192 | Schrag Oil Co | | Oil & Gas Operator | Jun 2004 |
| 193 | Schulz Oil & Gas, Inc. | Canton, KS 67428 | Oil & Gas Operator | Dec 2024 |
| 194 | Schulz Roger A | | Oil & Gas Operator | Dec 1996 |
| 195 | Scott'S Production, LLC | Roxbury, KS 67476 | Oil Operator | Sep 2025 |
| 196 | Scott'S Well Service Inc | Roxbury, KS 67476 | Oil Operator | Nov 2012 |
| 197 | Sierra Petroleum | | Oil & Gas Operator | Sep 1986 |
| 198 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 199 | Smith Richard F | | Oil Operator | Jun 1995 |
| 200 | Smokey Valley Resources | Lyons, KS 67554 | Oil Operator | Jun 1998 |