| 201 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 202 | Enhanced Hydrocarbons Inc | Claremore, OK 74017 | Oil & Gas Operator | May 2013 |
| 203 | Ensight Energy Group Inc | Richardson, TX 75080-2370 | Oil & Gas Operator | Oct 2025 |
| 204 | Enterprise Energy Exploration Inc | Tulsa, OK 74133-6724 | Oil & Gas Operator | Oct 2025 |
| 205 | Enterprising Enterprises Inc | Tulsa, OK 74137 | Oil Operator | Jun 2009 |
| 206 | Eott Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 1995 |
| 207 | Eskridge Production Company | Tulsa, OK 74112-1428 | Oil Operator | Sep 2019 |
| 208 | Ewsc Inc | Kenosha, WI 53142-3775 | Oil & Gas Operator | Apr 2020 |
| 209 | Excel Operating Inc | Dallas, TX 75234-7300 | Oil & Gas Operator | Jun 2022 |
| 210 | F M C Operating LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 2025 |
| 211 | Fairchild Oil Corporation | Edmond, OK 73013 | Oil & Gas Operator | Oct 1994 |
| 212 | Fairfield Oil & Gas Corp | Edmond, OK 73083 | Oil & Gas Operator | Nov 2021 |
| 213 | Fell Oil And Gas Inc | Tulsa, OK 74157-9487 | Oil & Gas Operator | Aug 2016 |
| 214 | Firehouse Energy LLC | Morris, OK 74445 | Oil & Gas Operator | Mar 2024 |
| 215 | First Natural Gas Inc | Checotah, OK 74426 | Oil & Gas Operator | Oct 2025 |
| 216 | Flare Oil Inc | Rockport, TX 78382 | Oil & Gas Operator | Dec 2025 |
| 217 | Flow Production Company | Midland, TX 79708 | Oil & Gas Operator | Mar 2005 |
| 218 | Flowin Gold Inc | Sapulpa, OK 74066-9735 | Oil & Gas Operator | Apr 2020 |
| 219 | Flud Richard | Okmulgee, OK 74447 | Oil & Gas Operator | Mar 2015 |
| 220 | Forrest A Ward | Okmulgee, OK 74447-8891 | Oil & Gas Operator | Jul 2025 |
| 221 | Four-O-One Corporation | Edmond, OK 73013-1977 | Oil & Gas Operator | Mar 2015 |
| 222 | Fremen Walter E | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 2025 |
| 223 | Fremont Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2004 |
| 224 | G & G Services | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 1993 |
| 225 | G M G Oil & Gas Corp. | Morris, OK 74445 | Oil & Gas Operator | Oct 2025 |
| 226 | Gala Resources, LTD. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 227 | Garvey Oil And Gas LLC | Kellyville, OK 74039-4428 | Oil & Gas Operator | Mar 2015 |
| 228 | Gaskins Glendell L | Slick, OK 74071 | Oil & Gas Operator | Oct 2025 |
| 229 | Gazalski Richard S Dba Ski Energy | Henryetta, OK 74437-1208 | Oil & Gas Operator | Dec 2020 |
| 230 | Gemini Exploration Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | May 2013 |
| 231 | General Minerals Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | Dec 2015 |
| 232 | Genesis Petroleum Corporation | Fort Worth, TX 76116-7151 | Oil & Gas Operator | Mar 2011 |
| 233 | Gibson C O | Boynton, OK 74422 | Oil Operator | May 2021 |
| 234 | Gibson Donald L | Boynton, OK 74422 | Oil Operator | Oct 2025 |
| 235 | Gibson Les | Welty, OK 74833 | Oil & Gas Operator | Oct 2025 |
| 236 | Gill Jet C Dba Jetco Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Dec 2023 |
| 237 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | Nov 2025 |
| 238 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 239 | Glendell L Gaskins Production LLC | Slick, OK 74071 | Oil & Gas Operator | Oct 2025 |
| 240 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2025 |
| 241 | Gold-Mont Oil Company Inc | Tulsa, OK 74107 | Oil & Gas Operator | Nov 2015 |
| 242 | Golden Flame Scorpion Energy LLC | Beggs, OK 74421 | Oil Operator | Oct 2025 |
| 243 | Gomaco Inc | Tulsa, OK 74103-5061 | Oil & Gas Operator | Apr 2015 |
| 244 | Gomaco Operating Company | Tulsa, OK 74115 | Oil & Gas Operator | Nov 2025 |
| 245 | Gordon Brothers Oil Company | Stroud, OK 74079 | Oil & Gas Operator | Jul 2017 |
| 246 | Gordon Robert Oil Company | Stroud, OK 74070-0366 | Oil & Gas Operator | Jul 2001 |
| 247 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 248 | Graves J M | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2007 |
| 249 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 250 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 251 | Green William G | Jenks, OK 74037-3233 | Oil & Gas Operator | Apr 2020 |
| 252 | Greenfields Operating LLC | Tulsa, OK 74114 | Oil Operator | Oct 2025 |
| 253 | Greer Tom R | Ponca City, OK 74602-2444 | Oil & Gas Operator | May 2013 |
| 254 | Guinn David E | Cleveland, OK 74020 | Oil & Gas Operator | Oct 2025 |
| 255 | Gunkel Charley Wayne Rev Inter VIvos Trust | Schulter, OK 74460-0010 | Gas Operator | Dec 2015 |
| 256 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 257 | H L L Inc | Scottsdale, AZ 85251 | Oil & Gas Operator | Jan 2007 |
| 258 | Haddox Johnny C | Okemah, OK 74859-0254 | Oil Operator | Apr 2020 |
| 259 | Hailey Energy Corporation | Wesson, MS 39191 | Gas Operator | May 2013 |
| 260 | Halgas Inc | Tulsa, OK 74101-3012 | Oil & Gas Operator | May 2013 |
| 261 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 262 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 263 | Hamilton K M Oil & Gas Co | Ada, OK 74820 | Oil Operator | Jan 2013 |
| 264 | Harold Enterprises Inc | Kellyville, OK 74039-0441 | Oil & Gas Operator | Jan 2018 |
| 265 | Harper, Michael | | Oil & Gas Operator | Aug 2011 |
| 266 | Harris Olin | Okmulgee, OK 74447-8508 | Oil Operator | Feb 2012 |
| 267 | Harrison Oil & Gas Inc | Houston, TX 77019 | Oil & Gas Operator | Nov 2025 |
| 268 | Hawthorne Carl A | Mounds, OK 74047-4936 | Oil & Gas Operator | Apr 2015 |
| 269 | Haynes Jim L & Betty L | Haskell, OK 74436-8803 | Oil & Gas Operator | Dec 2013 |
| 270 | Helmco LTD | Kiefer, OK 74041-0397 | Oil & Gas Operator | Jan 2007 |
| 271 | Hendrickson W R | Beggs, OK 74421-2936 | Oil & Gas Operator | Jun 2023 |
| 272 | Henry Petroleum Inc | Oklahoma City, OK 73162-1757 | Oil & Gas Operator | Sep 2019 |
| 273 | Henson Doyle | Okmulgee, OK 74447-4841 | Oil & Gas Operator | Jun 2020 |
| 274 | Henson Terry Dba Daycon Exploration | Tulsa, OK 74133 | Oil & Gas Operator | Sep 2025 |
| 275 | Heritage Petroleum, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Dec 2025 |
| 276 | Herv Oil, LLC | Oklahoma City, OK 73116 | Oil Operator | Sep 2025 |
| 277 | Hewitt Energy Group Inc | Salt Lake City, UT 84111 | Oil & Gas Operator | Apr 2015 |
| 278 | Highmark Energy Operating LLC | Dallas, TX 75222 | Oil & Gas Operator | Dec 2025 |
| 279 | Hill Robert H & Willa F | Morris, OK 74445 | Oil & Gas Operator | Apr 2020 |
| 280 | Hill William H | Broken Arrow, OK 74012-8952 | Oil & Gas Operator | Apr 2020 |
| 281 | Hinson Bobbie L | Bristow, OK 74010 | Oil & Gas Operator | Sep 2025 |
| 282 | Hitchita #1 LP | Edmond, OK 73013-6628 | Oil & Gas Operator | Sep 1997 |
| 283 | Hixon James E | | Oil Operator | Feb 2004 |
| 284 | Hoffman Oil & Gas Company | | Oil & Gas Operator | Aug 1997 |
| 285 | Holloway David A | Okmulgee, OK 74447-9191 | Oil & Gas Operator | Oct 2025 |
| 286 | Holman Kendall | Paden, OK 74860-7116 | Oil & Gas Operator | Nov 2025 |
| 287 | Horseshoe Oil Co | Cromwell, OK 74837 | Oil & Gas Operator | Dec 2021 |
| 288 | Houseco Petroleum Inc | Bristow, OK 74010-0842 | Oil & Gas Operator | Aug 2002 |
| 289 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Oct 2025 |
| 290 | HRC Production Co | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 291 | HT2 Exploration LLC | The Woodlands, TX 77381-4198 | Oil Operator | Oct 2025 |
| 292 | Hull Enterprises Inc | Broken Arrow, OK 74012 | Oil & Gas Operator | Sep 2023 |
| 293 | Hull Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2021 |
| 294 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 295 | Humphrey Mark | Morris, OK 74445-2816 | Oil & Gas Operator | Sep 2021 |
| 296 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 297 | Hurst Oil Investments Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Feb 2015 |
| 298 | Hutton Gas Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 299 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 300 | Indian Nation Energy Company | Wewoka, OK 74884-3456 | Oil & Gas Operator | Apr 2020 |