| 201 | Exco Production Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Dec 2009 |
| 202 | Exco/Hgi JV Assets, LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2014 |
| 203 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Sep 2026 |
| 204 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jan 2026 |
| 205 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Sep 2026 |
| 206 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 207 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 208 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 209 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2026 |
| 210 | Falco S & D, Inc. | Shreveport, LA 71107 | Oil & Gas Operator | Apr 1998 |
| 211 | Faulconer Energy, LLC | Tyler, TX 75711 | Oil & Gas Operator | Sep 2026 |
| 212 | Faulconer, Vernon E., Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jun 2026 |
| 213 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Sep 2026 |
| 214 | Fields, Bert, Jr. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2015 |
| 215 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 216 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Sep 2026 |
| 217 | First Texas Exploration Corp. | Arcadia, LA 71001 | Oil & Gas Operator | Aug 2003 |
| 218 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 219 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 220 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Sep 2026 |
| 221 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 222 | Frisco Petroleum Management, LLC | Frisco, TX 75034 | Oil & Gas Operator | Sep 2021 |
| 223 | G N K Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 224 | Garrison Operating, L.L.C. | Tomball, TX 77375 | Oil & Gas Operator | Sep 2026 |
| 225 | Gary Production Company | Carthage, TX 75633 | Gas Operator | Sep 2026 |
| 226 | Gel Petroleum, Inc. | Bay City, TX 77414 | Oil & Gas Operator | Sep 2026 |
| 227 | Genecov Group, Inc. The | Tyler, TX 75713 | Oil & Gas Operator | Dec 2002 |
| 228 | GGP Exploration, LTD. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2026 |
| 229 | Glade Production | Gladewater, TX 75647 | Oil & Gas Operator | Nov 2008 |
| 230 | Glassell Producing Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 231 | Glassell, Alfred C., Jr. | Houston, TX 77002 | Oil & Gas Operator | Apr 2007 |
| 232 | GMX Resources, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2014 |
| 233 | Goldsberry Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 234 | Goldsmith Operating, LLC | Tyler, TX 75711 | Oil & Gas Operator | Sep 2026 |
| 235 | Goldsmith, J. Paul | Tyler, TX 75711 | Oil & Gas Operator | Feb 1997 |
| 236 | Goldsmith, Neta R. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2009 |
| 237 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 238 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 239 | Goodwill, G. R. | Shreveport, LA 71107 | Oil & Gas Operator | Sep 2026 |
| 240 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 241 | Graward Operating, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Sep 2026 |
| 242 | Graystone Energy Corporation | Judson, TX 75660 | Oil & Gas Operator | Sep 2026 |
| 243 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Sep 2026 |
| 244 | Grigsby Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2026 |
| 245 | Grigsby, Jack W. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2002 |
| 246 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 247 | Guest Petroleum Inc | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 248 | Gulftex Operating Inc | Plano, TX 75093 | Oil & Gas Operator | Sep 2026 |
| 249 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 250 | Hardey Co., The | Shreveport, LA 71107 | Oil & Gas Operator | Sep 2026 |
| 251 | Harleton Oil & Gas Inc. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2026 |
| 252 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
| 253 | Hawkins Oil & Gas, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 254 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 255 | Hennan Resources, Inc. | Great Neck, NY 11021 | Gas Operator | Nov 1997 |
| 256 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 257 | Hibbard Energy, LP | Whitehouse, TX 75791 | Oil & Gas Operator | Sep 2026 |
| 258 | Hightower Exploration | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2026 |
| 259 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Sep 2026 |
| 260 | Hill Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2009 |
| 261 | Hoell Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 262 | Hooper & Sons Investments Co.Inc | Tenaha, TX 75974 | Gas Operator | Nov 1997 |
| 263 | Hopewell Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2026 |
| 264 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 265 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 266 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 267 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Sep 2026 |
| 268 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
| 269 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 270 | Hunt Petroleum Corp. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 271 | Hunt, WM. Herbert, Trust Est. | Dallas, TX 75201 | Oil & Gas Operator | Sep 1998 |
| 272 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |
| 273 | Hydrocarbon Lease Management LTD | Addison, TX 75001 | Oil & Gas Operator | Jul 2002 |
| 274 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 275 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 276 | Indigo Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2019 |
| 277 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 278 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 279 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Sep 2026 |
| 280 | Ipt Oil Company | Evansville, IN 47706 | Oil & Gas Operator | Sep 2026 |
| 281 | Ironwood Oil & Gas LLC | Houston, TX 77067 | Oil & Gas Operator | Jun 2014 |
| 282 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Sep 2026 |
| 283 | Jamex, Inc. | Lewisville, TX 75067 | Oil & Gas Operator | Sep 2026 |
| 284 | Jandar Exploration, L. C. | Tyler, TX 75703 | Oil & Gas Operator | Sep 2026 |
| 285 | Jeems Bayou Production Corp. | Oil City, LA 71061 | Oil & Gas Operator | Sep 2026 |
| 286 | JHS Oilfield Services LLC | Dallas, TX 75206 | Oil Operator | Sep 2026 |
| 287 | Jil Oil Corp. | San Antonio, TX 78279 | Oil & Gas Operator | Sep 2026 |
| 288 | Jurassic Exploration, Inc. | Longview, TX 75601 | Oil & Gas Operator | Sep 2026 |
| 289 | Kabco Oil & Gas Company | Longview, TX 75604 | Oil & Gas Operator | Jun 2018 |
| 290 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Sep 2026 |
| 291 | Katy Resources Etx, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2011 |
| 292 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 293 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 294 | KCS Resources, LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 295 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Feb 2026 |
| 296 | Key Energy Of Colorado, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2016 |
| 297 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2026 |
| 298 | Kirkpatrick Oil & Gas L.L.C. | Midland, TX 79701 | Oil & Gas Operator | Dec 2010 |
| 299 | KJ Energy, LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Jul 2024 |
| 300 | Kornye-Tillman Company | Cleburne, TX 76031 | Oil & Gas Operator | Sep 2026 |