| 201 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2023 |
| 202 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
| 203 | Ferguson Oil Company Inc | | Oil & Gas Operator | Apr 1994 |
| 204 | Fife Oil Company, Inc. | | Oil & Gas Operator | Feb 2008 |
| 205 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 206 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Apr 2024 |
| 207 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 208 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 209 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Apr 2024 |
| 210 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 211 | Flex Energy, L.L.C. | | Oil & Gas Operator | Feb 2010 |
| 212 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 213 | FMP Operating Co., LTD. PTN. | | Oil & Gas Operator | Mar 1990 |
| 214 | Forcenergy Gas Exploration Inc. | Miami, FL 33129 | Oil & Gas Operator | Aug 1996 |
| 215 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 216 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 217 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Apr 2024 |
| 218 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2024 |
| 219 | Franks - Arkla | | Oil & Gas Operator | Jun 1985 |
| 220 | Franks Petroleum, Inc. Et Al | | Oil & Gas Operator | Oct 1989 |
| 221 | Freeport-McMoran Inc. | New Orleans, LA 70160 | Oil & Gas Operator | Apr 1997 |
| 222 | Freeport-McMoran Oil & Gas Co. | | Oil & Gas Operator | Jan 1991 |
| 223 | Future Oil & Gas, Inc. | | Oil & Gas Operator | Mar 2010 |
| 224 | G. B. & F. Exploration, Inc. | | Oil & Gas Operator | Feb 1991 |
| 225 | Gap Energy, Inc. | | Oil & Gas Operator | Oct 1995 |
| 226 | Gde Investments La, L.L.C. | | Oil & Gas Operator | Jan 2024 |
| 227 | General American Oil Co Of TX | | Oil & Gas Operator | Jun 1983 |
| 228 | General Atlantic Energy Corp. | | Oil & Gas Operator | Nov 1988 |
| 229 | General Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 230 | George R. Brown | | Oil & Gas Operator | Mar 1984 |
| 231 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 232 | Glasscock Drilling, Inc. | | Oil & Gas Operator | Dec 1977 |
| 233 | Goldking Onshore Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2016 |
| 234 | Goldking Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2007 |
| 235 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 236 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 237 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 238 | Graham Exploration, LTD. | | Oil & Gas Operator | Oct 1993 |
| 239 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 240 | Graham-McCormick Oper. PRTSHP. | | Oil & Gas Operator | Aug 1989 |
| 241 | Grease Exploration Incorporated | | Oil & Gas Operator | Nov 2023 |
| 242 | Great River Oil & Gas Corp. | | Oil & Gas Operator | Sep 1998 |
| 243 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 244 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Apr 2024 |
| 245 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 246 | Gulf South Pipeline Company, LP | Houston, TX 77001 | Oil & Gas Operator | Dec 2020 |
| 247 | Gulfport Energy Corporation | Oklahoma City, OK 73134-5003 | Oil & Gas Operator | Feb 2024 |
| 248 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 249 | Hamon Oil Company | | Oil & Gas Operator | Aug 1985 |
| 250 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 251 | Harvest Oil & Gas, LLC | | Oil & Gas Operator | Feb 2012 |
| 252 | Hassie Hunt Expl. Company | Dallas, TX 75201 | Oil & Gas Operator | Aug 2008 |
| 253 | Hawthorne Oil And Gas Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1993 |
| 254 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 255 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 256 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2024 |
| 257 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
| 258 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Sep 2019 |
| 259 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Apr 2024 |
| 260 | Hilliard Oil & Gas Inc | New Orleans, LA 70112 | Oil & Gas Operator | May 2001 |
| 261 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 262 | Hogan Energy Corporation | | Oil & Gas Operator | Oct 1999 |
| 263 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
| 264 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 265 | Houston Oil Fields Company | | Oil & Gas Operator | Apr 1987 |
| 266 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
| 267 | Hugh A. Hawthorne, Et Al | | Oil & Gas Operator | Dec 1978 |
| 268 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 269 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 270 | Hunter Oil & Gas, LLC | | Oil & Gas Operator | Oct 2001 |
| 271 | I. H. Delatte | | Oil & Gas Operator | Jul 1991 |
| 272 | Iberia Operating Corporation | | Oil & Gas Operator | Jan 2003 |
| 273 | Imc Exploration Co. | | Oil & Gas Operator | Oct 1986 |
| 274 | Independent Exploration Company | | Oil & Gas Operator | Dec 2000 |
| 275 | Indian Exploration, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Apr 2024 |
| 276 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 277 | Itr Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 278 | J & R Systems, Inc. | | Oil Operator | Apr 2002 |
| 279 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Apr 2024 |
| 280 | J. P. Van Way | | Oil & Gas Operator | Dec 2023 |
| 281 | Jack Showacre | | Oil Operator | Jun 2002 |
| 282 | Jade Petroleum Inc. | | Oil & Gas Operator | May 1998 |
| 283 | Jake L. Hamon | | Oil & Gas Operator | Dec 1983 |
| 284 | James A. Whitson, Jr. | | Oil & Gas Operator | Apr 2016 |
| 285 | Janex Oil Co., Inc. | Dallas, TX 75219 | Oil & Gas Operator | Jun 2005 |
| 286 | Japex (U.S.) Corp. | | Oil & Gas Operator | May 1998 |
| 287 | JMR Oil, Inc. | | Oil & Gas Operator | Sep 2006 |
| 288 | Joe W. Elsbury | | Oil & Gas Operator | Oct 1988 |
| 289 | Jones Company | | Oil & Gas Operator | Dec 1990 |
| 290 | Jones Company, LTD. | Albany, TX 76430 | Oil & Gas Operator | May 1999 |
| 291 | Jones Exploration Company | | Oil & Gas Operator | Jun 1985 |
| 292 | Jordan Oil Company, Inc. | Lake Charles, LA 70602 | Oil & Gas Operator | Dec 2019 |
| 293 | Kaiser Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1990 |
| 294 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2024 |
| 295 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | Apr 2024 |
| 296 | Kash Oil And Gas, Inc | | Oil & Gas Operator | Oct 2020 |
| 297 | Kauthar Energy Co., Inc. | | Oil & Gas Operator | Dec 2002 |
| 298 | Kelley Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Jan 2002 |
| 299 | Kenergy Petroleum Corp | | Oil & Gas Operator | Dec 1982 |
| 300 | Kenergy-Wainoco | | Oil & Gas Operator | Mar 1981 |