| 201 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 202 | Franks Petroleum Inc. | | Oil & Gas Operator | Nov 1994 |
| 203 | Franks Petroleum, Inc. Et Al | | Oil & Gas Operator | Oct 1989 |
| 204 | Franks-Petrofunds & Vermilion | | Oil & Gas Operator | Aug 1989 |
| 205 | French Production Incorporated | Houston, TX 77086 | Oil & Gas Operator | Dec 1997 |
| 206 | Gas Masters Of America, Inc. | | Oil & Gas Operator | Nov 2024 |
| 207 | Gas Producing Enterprises, Inc. | | Oil & Gas Operator | Oct 1985 |
| 208 | Gas Transportation Corporation | | Oil & Gas Operator | Aug 1995 |
| 209 | Ged Oil Corporation | | Oil & Gas Operator | Aug 2012 |
| 210 | General American Oil Co Of TX | | Oil & Gas Operator | Jun 1983 |
| 211 | General Crude Oil Co | Houston, TX 77005 | Oil & Gas Operator | Dec 1979 |
| 212 | General Electric Company | Erie, PA 16531-0001 | Oil & Gas Operator | Sep 1987 |
| 213 | Goldking Capital Management, LLC | | Oil & Gas Operator | Nov 2024 |
| 214 | Goldking Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2007 |
| 215 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 216 | Goodrich Exploration, L.L.C. | Houston, TX 77251 | Oil & Gas Operator | Sep 2005 |
| 217 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 218 | Goodrich Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2006 |
| 219 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 220 | Goodrich Petroleum Corporation | | Oil & Gas Operator | Sep 1996 |
| 221 | Graham Exploration, LTD. | | Oil & Gas Operator | Oct 1993 |
| 222 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 223 | Graham-McCormick Oper. PRTSHP. | | Oil & Gas Operator | Aug 1989 |
| 224 | Grand Energy, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Oct 2002 |
| 225 | Grand Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Dec 2020 |
| 226 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 227 | Gryphon Exploration Company | Mandeville, LA 70471 | Oil & Gas Operator | Aug 2009 |
| 228 | Guaranty Energy Corp. | | Oil & Gas Operator | Aug 1990 |
| 229 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 230 | Gulfport Energy Corporation | Oklahoma City, OK 73114-5003 | Oil & Gas Operator | Aug 2025 |
| 231 | Gulfstream Resources, Inc. | | Oil & Gas Operator | May 1996 |
| 232 | H.L.Hawkins &H.L.Hawkins, Jr. | | Oil & Gas Operator | Feb 1989 |
| 233 | Hackberry Production, Inc. | | Oil Operator | Mar 1988 |
| 234 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
| 235 | Harbert Energy Corp | Irving, TX 75015-2510 | Oil & Gas Operator | Feb 1993 |
| 236 | HCW Exploration, Inc. | | Oil & Gas Operator | Jun 1986 |
| 237 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 238 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 239 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 240 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 241 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 242 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2019 |
| 243 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2025 |
| 244 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 245 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Dec 2025 |
| 246 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 247 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 248 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 249 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
| 250 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 251 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 252 | Hunter Oil & Gas, LLC | | Oil & Gas Operator | Oct 2001 |
| 253 | Hydrocarbon MGMT., Inc. | | Oil & Gas Operator | Mar 1997 |
| 254 | I. H. Delatte | | Oil & Gas Operator | Jul 1991 |
| 255 | Iberia Operating Corporation | | Oil & Gas Operator | Jan 2003 |
| 256 | Imc Exploration Co. | | Oil & Gas Operator | Oct 1986 |
| 257 | Imperial-American Energy,Inc. | | Oil & Gas Operator | Jul 1978 |
| 258 | Indian Exploration, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Dec 2025 |
| 259 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 260 | Iowa Production Company, Inc. | | Oil & Gas Operator | Jan 1992 |
| 261 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 262 | J & J Onshore Production, Inc. | | Oil & Gas Operator | Feb 2016 |
| 263 | J F D Inc | Houston, TX 77041-6914 | Oil & Gas Operator | Feb 2000 |
| 264 | J P Owen . | | Oil & Gas Operator | Mar 1989 |
| 265 | J P Van Way | | Oil & Gas Operator | Dec 2024 |
| 266 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Dec 2025 |
| 267 | J. G. Sutton Oil Co., Inc. | | Oil Operator | Mar 1988 |
| 268 | J. P. Owen & Co. Inc. | | Oil & Gas Operator | Feb 1991 |
| 269 | Jack Todd-Despot Expl., Inc. | | Oil & Gas Operator | Apr 1985 |
| 270 | James A. Whitson, Jr. | | Oil & Gas Operator | Apr 2016 |
| 271 | Janex Oil Co., Inc. | Dallas, TX 75219 | Oil & Gas Operator | Jun 2005 |
| 272 | Jimmy Roberson Energy Corp. | Texarkana, TX 75503 | Oil & Gas Operator | Sep 2012 |
| 273 | Jordan Oil Company, Inc. | Lake Charles, LA 70602 | Oil & Gas Operator | Dec 2019 |
| 274 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2025 |
| 275 | Kash Oil And Gas, Inc | | Oil & Gas Operator | Oct 2020 |
| 276 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 277 | Kedco Management Corp | | Oil & Gas Operator | Jul 1985 |
| 278 | Key Operating Company Inc | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 279 | Keystone Exploration, Inc | College Sta, TX 77845 | Oil & Gas Operator | Dec 2025 |
| 280 | Kilroy Co. Of Texas, Inc. | | Oil & Gas Operator | Jun 1991 |
| 281 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 282 | KV Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2006 |
| 283 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 284 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 285 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 286 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 287 | Lamson/Crocker Petroleum Corp. | | Oil & Gas Operator | May 1988 |
| 288 | Lamson/Onshore Petroleum Corp. | | Oil & Gas Operator | Sep 1985 |
| 289 | Lanoco, Inc. | | Oil & Gas Operator | Sep 2002 |
| 290 | Lapis Operating, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jul 2015 |
| 291 | Las Services, Inc. | | Oil & Gas Operator | Oct 1997 |
| 292 | Leads Resources, L.L.C. | | Oil & Gas Operator | Jan 2017 |
| 293 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 294 | Legacy Operating Company | | Oil & Gas Operator | Aug 1992 |
| 295 | Legacy Resources Co., L.P. | | Oil & Gas Operator | Apr 2019 |
| 296 | Legendary Oil Co., Inc. | | Oil Operator | Feb 2004 |
| 297 | LGS Exploration, Inc. | | Oil & Gas Operator | Jan 1991 |
| 298 | Liberty Oil & Gas Corp | Olney, IL 62450-2489 | Oil & Gas Operator | Dec 2021 |
| 299 | Linder Oil Company | | Oil & Gas Operator | Apr 1985 |
| 300 | Linder Oil Company,A Partnership | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2025 |