| 101 | Denham Operating Company | Tulsa, OK 74101-3627 | Oil & Gas Operator | Aug 2022 |
| 102 | Dennison George | Tulsa, OK 74112-6732 | Oil & Gas Operator | Apr 2020 |
| 103 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 104 | Dexxon Inc | Kiefer, OK 74041 | Oil & Gas Operator | Oct 2025 |
| 105 | Digger Oil & Gas Inc | Prague, OK 74864 | Oil & Gas Operator | Nov 2025 |
| 106 | Discover Resources | Norman, OK 73070 | Oil & Gas Operator | Jan 2011 |
| 107 | Double R Petroleum | | Oil & Gas Operator | Sep 2004 |
| 108 | Drake Exploration Inc | Tulsa, OK 74105-4250 | Oil & Gas Operator | Nov 2025 |
| 109 | Dual Operating & Production Co | Tulsa, OK 74145-7831 | Oil & Gas Operator | Apr 2020 |
| 110 | Dunlap Drilling And Producing, Inc | Glenpool, OK 74033-4206 | Oil & Gas Operator | Oct 2025 |
| 111 | Dunlap Oil Company | Bristow, OK 74010 | Oil & Gas Operator | Oct 2025 |
| 112 | Dunn Energy LLC | Skiatook, OK 74070-4046 | Oil Operator | Sep 2022 |
| 113 | Durossette Jr Jess | Haskell, OK 74436 | Oil Operator | Mar 2007 |
| 114 | Dyer Dale E Dba The Loving Company | Tulsa, OK 74107 | Oil & Gas Operator | Nov 2025 |
| 115 | E2 Operating LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |
| 116 | Eagle Oil & Gas Properties Inc | Pleasant Prarie, WI 53158-4719 | Oil & Gas Operator | Jan 2016 |
| 117 | Earth Oil Inc | Skiatook, OK 74070-0578 | Oil & Gas Operator | Oct 2008 |
| 118 | Edge Oil Company Inc | Cleveland, OK 74020-0284 | Oil & Gas Operator | Feb 2024 |
| 119 | Elite Resources Inc | Cleveland, OK 74020 | Oil & Gas Operator | Oct 2025 |
| 120 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Nov 2025 |
| 121 | Ellard I W | Bixby, OK 74008-0220 | Oil & Gas Operator | Jan 2007 |
| 122 | Emerald Operating Company | Plano, TX 75075 | Oil & Gas Operator | Nov 2025 |
| 123 | Emery Billie E | Skiatook, OK 74070 | Oil Operator | Oct 2025 |
| 124 | Emery Edward A | Tulsa, OK 74145-7921 | Oil Operator | Oct 2025 |
| 125 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 126 | Enerfin Gathering-East LLC | Houston, TX 77077 | Oil & Gas Operator | Nov 2022 |
| 127 | Energy Lease Service Inc | Drumright, OK 74030-7403 | Oil & Gas Operator | Oct 2025 |
| 128 | Energy Production Services LLC | Oklahoma City, OK 73162-4736 | Oil & Gas Operator | Apr 2020 |
| 129 | Energyquest Management, LLC | Houston, TX 77090 | Oil & Gas Operator | Apr 2021 |
| 130 | Enersearch Inc | Sand Springs, OK 74063 | Oil & Gas Operator | Dec 2013 |
| 131 | Enexco, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Mar 2017 |
| 132 | Enloe Jenny L | Skiatook, OK 74070 | Oil Operator | Nov 1998 |
| 133 | Eskridge Oil & Supply | Tulsa, OK 74105 | Oil Operator | Aug 2014 |
| 134 | Eskridge Production Company | Tulsa, OK 74112-1428 | Oil Operator | Sep 2019 |
| 135 | Exok Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Oct 2025 |
| 136 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Oct 2025 |
| 137 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 138 | Fadem Oil Company | Tulsa, OK 74135 | Oil Operator | Jan 1996 |
| 139 | Fairchild Well Service Inc | Ponca City, OK 74602-0470 | Oil & Gas Operator | Jun 2006 |
| 140 | Fears George E | | Oil & Gas Operator | Mar 2019 |
| 141 | Fell Oil And Gas Inc | Tulsa, OK 74157-9487 | Oil & Gas Operator | Aug 2016 |
| 142 | Fidgets Energy LLC | Checotah, OK 74426-5309 | Oil Operator | Oct 2024 |
| 143 | Firey Oil Company | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2021 |
| 144 | Flatt Energy Inc | | Oil & Gas Operator | Sep 2019 |
| 145 | Forrest A Ward | Okmulgee, OK 74447-8891 | Oil & Gas Operator | Jul 2025 |
| 146 | Galt Investment Company LLC | Tulsa, OK 74120-7412 | Oil Operator | Jun 2024 |
| 147 | Gateway Resources USA Inc | Bartlesville, OK 74006 | Oil & Gas Operator | Oct 2025 |
| 148 | Gazalski Richard S Dba Ski Energy | Henryetta, OK 74437-1208 | Oil & Gas Operator | Dec 2020 |
| 149 | Geiger Albert J Revocable Trust | Tulsa, OK 74107 | Oil Operator | Sep 1994 |
| 150 | Gemini Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 151 | Genzer Jim W | Sapulpa, OK 74067-1252 | Oil & Gas Operator | May 2013 |
| 152 | GMP Minerals LLC | Tulsa, OK 74132-1244 | Oil Operator | Sep 2025 |
| 153 | GMW Petroleum LLC | Skiatook, OK 74070 | Oil & Gas Operator | Oct 2025 |
| 154 | Gold Un Oil Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 2013 |
| 155 | Gordon Robert Oil Company | Stroud, OK 74070-0366 | Oil & Gas Operator | Jul 2001 |
| 156 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2025 |
| 157 | Greenfields Operating LLC | Tulsa, OK 74114 | Oil Operator | Oct 2025 |
| 158 | Greenwood Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2013 |
| 159 | Guest R E Oil Producer | Edmond, OK 73083-0805 | Oil & Gas Operator | Mar 2015 |
| 160 | Hale John H | Tulsa, OK 74107 | Oil & Gas Operator | Mar 2000 |
| 161 | Halfway Oil Inc | Tahlequah, OK 74464-5448 | Oil & Gas Operator | Aug 2013 |
| 162 | Halgas Inc | Tulsa, OK 74101-3012 | Oil & Gas Operator | May 2013 |
| 163 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 164 | Heath Jack A | Tulsa, OK 74132-2403 | Oil & Gas Operator | Jan 2013 |
| 165 | Helmco LTD | Kiefer, OK 74041-0397 | Oil & Gas Operator | Jan 2007 |
| 166 | Hillenburg Oil Company | Broken Arrow, OK 74011-4021 | Oil Operator | Apr 2011 |
| 167 | HMX Investments, Inc. | Katy, TX 77494 | Oil & Gas Operator | Oct 2025 |
| 168 | Holloway David A | Okmulgee, OK 74447-9191 | Oil & Gas Operator | Oct 2025 |
| 169 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Dec 2025 |
| 170 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 171 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 172 | Hope Oil Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2021 |
| 173 | Hoppes Helen E | Depew, OK 74028-3428 | Oil & Gas Operator | Apr 2015 |
| 174 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 175 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 176 | Hunt Brothers Producing Co Inc | Redding, CA 96049-2516 | Oil & Gas Operator | Sep 2012 |
| 177 | Huntington Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2006 |
| 178 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 179 | I D Oil Company Inc | Sperry, OK 74073-9417 | Oil Operator | Jan 2013 |
| 180 | I T Enterprises Inc | Tulsa, OK 74170-0775 | Oil & Gas Operator | Mar 2011 |
| 181 | Indian Nation Energy Company | Wewoka, OK 74884-3456 | Oil & Gas Operator | Apr 2020 |
| 182 | Inland Oil Corporation | Sapulpa, OK 74067 | Oil & Gas Operator | Nov 2025 |
| 183 | International Energy Company LLC | Tulsa, OK 74136-3922 | Oil & Gas Operator | Nov 2025 |
| 184 | International Energy Corporation | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2018 |
| 185 | J & F Oil & Gas Company | Yale, OK 74085-0311 | Oil & Gas Operator | Feb 2004 |
| 186 | J-Brex Company | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2025 |
| 187 | J.R. Oil Company | Houston, TX 77007 | Oil & Gas Operator | Jul 2019 |
| 188 | Jaed Oil Production Co Inc | Arkansas City, KS 67005-0902 | Oil & Gas Operator | Mar 2015 |
| 189 | James Oil Company | Compton, CA 90221-4399 | Oil & Gas Operator | Nov 2008 |
| 190 | James Raymond L | Sapulpa, OK 74066-8785 | Oil & Gas Operator | Nov 2025 |
| 191 | Jason Petroleum Corporation | Tulsa, OK 74170-0622 | Oil & Gas Operator | Dec 1998 |
| 192 | Jim Darnell Dba Jim Darnell Operating Co | Okmulgee, OK 74447-8988 | Oil & Gas Operator | Aug 2025 |
| 193 | Johnson Horace T | Tulsa, OK 74105 | Oil & Gas Operator | Dec 2000 |
| 194 | K Energy Inc | Mannford, OK 74044-3023 | Oil & Gas Operator | May 2013 |
| 195 | K-C Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jan 2013 |
| 196 | Kaiser Investments | Sand Springs, OK 74063 | Oil & Gas Operator | Sep 2003 |
| 197 | Kay Production Company | Seminole, OK 74868 | Oil & Gas Operator | Sep 2025 |
| 198 | Keener Oil & Gas Company | Tulsa, OK 74119-4416 | Oil & Gas Operator | Nov 2025 |
| 199 | Kehler & Kehler Oil Company | Skiatook, OK 74070-3674 | Oil & Gas Operator | Feb 2005 |
| 200 | Kelly Oil | Tulsa, OK 74105 | Oil Operator | Dec 2000 |