| 201 | Eagle Road Oil LLC | Tulsa, OK 74103-3312 | Oil & Gas Operator | Nov 2025 |
| 202 | Earl Oil Inc | Stillwater, OK 74074-1079 | Oil & Gas Operator | Oct 2025 |
| 203 | Eason Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2012 |
| 204 | Eastern Oilwell Cement Co Inc | Seminole, OK 74818-1704 | Oil & Gas Operator | Aug 2008 |
| 205 | Eastex Energy LLC | Shawnee, OK 74804 | Oil Operator | Oct 2025 |
| 206 | Eddie'S Submersible Service Inc | Shawnee, OK 74801-5047 | Oil & Gas Operator | Mar 2015 |
| 207 | Ekg Operating Inc | Seminole, OK 74818-1028 | Oil & Gas Operator | Nov 2015 |
| 208 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Nov 2025 |
| 209 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Nov 2025 |
| 210 | Encore Operating Inc | Edmond, OK 73013-5417 | Oil Operator | Oct 2025 |
| 211 | Enerfin Resources I Limited Partnership | Houston, TX 77077-2386 | Oil & Gas Operator | Apr 2023 |
| 212 | Energy Environment Inc | Holdenville, OK 74848-0765 | Oil & Gas Operator | Jul 2016 |
| 213 | Eott Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 1995 |
| 214 | Escher Corporation | Oklahoma City, OK 73120 | Oil & Gas Operator | Aug 2025 |
| 215 | Esis Inc | | Oil & Gas Operator | Feb 2017 |
| 216 | Esperanza Energy Corp. | Prosper, TX 75078 | Oil & Gas Operator | Mar 2015 |
| 217 | Estoril Producing Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1994 |
| 218 | Evolution Energy LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2025 |
| 219 | Excelco Energy Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2018 |
| 220 | Express Oil & Gas LLC | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Nov 2025 |
| 221 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 222 | Fadem Oil Company | Tulsa, OK 74135 | Oil Operator | Jan 1996 |
| 223 | Fail W T Inc | | Oil & Gas Operator | Mar 2015 |
| 224 | Fairfield Oil & Gas Corp | Edmond, OK 73083 | Oil & Gas Operator | Nov 2021 |
| 225 | Falcon Oil & Gas Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2022 |
| 226 | Farmers Energy Corporation | Tulsa, OK 74103-3525 | Oil & Gas Operator | Nov 2021 |
| 227 | Forest 1 Development Company | Denver, CO 80202-4966 | Oil & Gas Operator | Mar 2008 |
| 228 | Foxborough Energy Company, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 229 | FP Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2008 |
| 230 | Freeman Oil Co | Midland, TX 79701 | Oil & Gas Operator | Sep 2014 |
| 231 | Fremont Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2004 |
| 232 | G & N Oil & Gas LLC | Asher, OK 74826 | Oil & Gas Operator | Mar 2025 |
| 233 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 234 | Gastar Exploration LLC | Tulsa, OK 74136-1921 | Oil & Gas Operator | Oct 2025 |
| 235 | Gda Investments Inc | Oklahoma City, OK 73123-0403 | Oil & Gas Operator | Oct 2025 |
| 236 | Genesis Inc | Seminole, OK 74818-1647 | Oil & Gas Operator | Sep 2014 |
| 237 | Genesis Petroleum Corporation | Fort Worth, TX 76116-7151 | Oil & Gas Operator | Mar 2011 |
| 238 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 239 | Geodyne Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 240 | Geoex Resources Inc | | Oil & Gas Operator | Jan 1997 |
| 241 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 242 | Giant Petroleum Corp | Jefferson, OH 44047 | Oil & Gas Operator | Dec 1990 |
| 243 | Gibraltar Petroleum Corporation | Mabank, TX 75147 | Oil & Gas Operator | Nov 2008 |
| 244 | Gill Jet C Dba Jetco Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Dec 2023 |
| 245 | Gillham Oil & Gas Inc | Shawnee, OK 74801-3547 | Oil Operator | May 1997 |
| 246 | Gillham Paul | Maud, OK 74854 | Oil & Gas Operator | Apr 2023 |
| 247 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | Nov 2025 |
| 248 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 249 | Gloco LLC (The) | Ada, OK 74820 | Oil & Gas Operator | Oct 2025 |
| 250 | Gloria Corporation The | Ada, OK 74821-0297 | Oil & Gas Operator | Sep 2014 |
| 251 | Golden Circle Production Co | Seminole, OK 74868 | Oil & Gas Operator | May 2002 |
| 252 | Gomaco Inc | Tulsa, OK 74103-5061 | Oil & Gas Operator | Apr 2015 |
| 253 | Gomaco Operating Company | Tulsa, OK 74115 | Oil & Gas Operator | Nov 2025 |
| 254 | Goodnight & Laird | St Louis, OK 74866 | Oil & Gas Operator | Aug 2025 |
| 255 | Goodnight C A Dba C & M Oil Company | Tecumseh, OK 74873-4825 | Oil Operator | Jan 2013 |
| 256 | Goodnight Lindell D | St Louis, OK 74866 | Oil Operator | Feb 1992 |
| 257 | Gordon Brothers Oil Company | Stroud, OK 74079 | Oil & Gas Operator | Jul 2017 |
| 258 | Gordon Robert Oil Company | Stroud, OK 74070-0366 | Oil & Gas Operator | Jul 2001 |
| 259 | Gouker & Harris | Meeker, OK 74855-0685 | Oil Operator | Jan 2013 |
| 260 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2025 |
| 261 | Grant Petroleum Corporation | Horseshoe Bay, TX 78657-8926 | Oil & Gas Operator | Dec 2014 |
| 262 | Grayson Operating LLC | Ada, OK 74820 | Oil & Gas Operator | Oct 2025 |
| 263 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 264 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 265 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 266 | Greenlee Oil And Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Sep 2025 |
| 267 | Griffin Well Service Inc | Konawa, OK 74849-9710 | Oil & Gas Operator | Oct 2025 |
| 268 | Gugli Corporation | Byng, OK 74820 | Oil & Gas Operator | Sep 2014 |
| 269 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2025 |
| 270 | Gypsyglenn Oil Company LLC | Tulsa, OK 74119-4809 | Oil & Gas Operator | Nov 2025 |
| 271 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 272 | Hargraves Elston | Ponca City, OK 74604 | Oil & Gas Operator | Jul 2003 |
| 273 | Hargus Curtis | Macomb, OK 74852-8508 | Oil Operator | May 2017 |
| 274 | Hargus Irrevocable Trust | Tecumseh, OK 74873-0590 | Oil Operator | Apr 2014 |
| 275 | Harold G Raper Family Trust | Mansfield, TX 76063-1667 | Oil Operator | May 2023 |
| 276 | Harp Peggy A | Seminole, OK 74868-2284 | Oil & Gas Operator | Mar 2024 |
| 277 | Harvey A B | Seminole, OK 74868-1724 | Oil Operator | Mar 2015 |
| 278 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 279 | Heaton Everill L | Exeter, CA 93221-2340 | Oil & Gas Operator | Sep 2014 |
| 280 | Heller Phillip & Charlene | Columbia, MO 65201 | Oil & Gas Operator | Oct 2025 |
| 281 | Helton Oil Company | Edmond, OK 73083-7283 | Oil & Gas Operator | Aug 2016 |
| 282 | Hembree Alva | Oklahoma City, OK 73151-9145 | Oil & Gas Operator | Jun 2016 |
| 283 | Hembree Brit W | Shawnee, OK 74802-1725 | Oil & Gas Operator | Oct 2025 |
| 284 | Henry Petroleum Inc | Oklahoma City, OK 73162-1757 | Oil & Gas Operator | Sep 2019 |
| 285 | Hiawatha Exploration Company | Oklahoma City, OK 73116-7326 | Oil & Gas Operator | Mar 2009 |
| 286 | Hibbert R E Estate Of | Houston, TX 77002-3211 | Oil & Gas Operator | Apr 2015 |
| 287 | High Energy | Cushing, OK 74023 | Oil & Gas Operator | Sep 2025 |
| 288 | Hill Oil Company Inc | Shawnee, OK 74804 | Oil & Gas Operator | Oct 2025 |
| 289 | Hinkle Engineering, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2016 |
| 290 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 291 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Nov 2025 |
| 292 | Holke Dave Consulting Inc | Meridian, ID 83646-4812 | Oil & Gas Operator | Oct 2025 |
| 293 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 294 | Hotulke Construction LLC | Seminole, OK 74868 | Oil & Gas Operator | Oct 2025 |
| 295 | HP Operating LLC | Seminole, OK 74868 | Oil Operator | Oct 2025 |
| 296 | Hughes George B | Asher, OK 74826-0165 | Oil & Gas Operator | Mar 2011 |
| 297 | Hunt Engineering Inc | Norman, OK 73069-4093 | Oil & Gas Operator | Feb 2019 |
| 298 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |
| 299 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 300 | Ingram Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Oct 2025 |