| 201 | Jenkins Oil & Gas, Inc. | | Oil & Gas Operator | Aug 1992 |
| 202 | Jesse Franklin Rosett | | Oil & Gas Operator | Jan 1981 |
| 203 | JLM Sartor Inc | | Oil & Gas Operator | Jul 2016 |
| 204 | John J. Welsh | | Oil & Gas Operator | Dec 2023 |
| 205 | John O. Clay Exploration, Inc. | | Oil & Gas Operator | Apr 2005 |
| 206 | K R S Expl., Inc. | | Oil Operator | Oct 2020 |
| 207 | K W B Oil Property MGMT Inc | | Oil & Gas Operator | Jun 2000 |
| 208 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
| 209 | KCS Resources, LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 210 | Kelley Operating Company, LTD. | | Oil & Gas Operator | Aug 2003 |
| 211 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Sep 2023 |
| 212 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | May 2024 |
| 213 | Kerr-McGee Oil & Gas Onshr LLC | | Oil & Gas Operator | Dec 2005 |
| 214 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2024 |
| 215 | Killingsworth Oil Co. | Longview, TX 75606 | Oil & Gas Operator | May 2024 |
| 216 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 217 | L & L Supply | | Oil Operator | Dec 1994 |
| 218 | L'Oil Operating And MGMT. Co. | | Oil & Gas Operator | Dec 2008 |
| 219 | L.J. Exploration, Inc. | | Oil & Gas Operator | Dec 2020 |
| 220 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | May 2024 |
| 221 | Laser Gas Company I, LLC | | Oil Operator | Aug 2007 |
| 222 | Lax, Inc. | | Oil & Gas Operator | Nov 1987 |
| 223 | Lebus Oilfield Service Co | | Oil Operator | Sep 2009 |
| 224 | Lenert & Pettitt, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 1994 |
| 225 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 226 | Louisiana Gas Development Corp | | Oil & Gas Operator | Jan 2024 |
| 227 | Louisiana-Hunt Petroleum Corp. | | Oil & Gas Operator | Dec 1985 |
| 228 | M & M Oil Co., LLC | Oil City, LA 71061 | Oil & Gas Operator | May 2024 |
| 229 | M & S Production, Inc. | | Oil Operator | Jul 1994 |
| 230 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 2024 |
| 231 | Malone-Killen Oil Expl. Co. | | Oil Operator | Apr 1992 |
| 232 | Mandalay Trading Services Inc. | | Oil Operator | Jul 1999 |
| 233 | Mann Production Co., Inc. | | Oil Operator | Nov 1995 |
| 234 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Mar 2024 |
| 235 | Mark L Shidler, Inc. | Houston, TX 77055 | Oil & Gas Operator | Jan 2024 |
| 236 | Mark Seifer | | Oil & Gas Operator | Jan 2024 |
| 237 | Marshall Exploration, Inc. | | Oil & Gas Operator | Jul 1992 |
| 238 | Martin Oil & Gas Co. | | Oil Operator | Jul 1981 |
| 239 | Martin Production Company | | Oil & Gas Operator | Dec 2023 |
| 240 | Marvin L. Muslow | | Oil Operator | Jun 1995 |
| 241 | Maximus Operating, LTD. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 242 | May Petroleum, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Nov 1998 |
| 243 | Maynard Oil Co. | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 244 | McConathy Production Co.,Inc. | | Oil & Gas Operator | Jun 1990 |
| 245 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 246 | McKenzie Management Inc. | | Oil & Gas Operator | Aug 1989 |
| 247 | McMullan Oil Company | San Antonio, TX 78212 | Oil & Gas Operator | May 2023 |
| 248 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 249 | Menoah Petroleum Inc | | Oil & Gas Operator | Dec 2023 |
| 250 | Mid-South Trading, Inc. | | Oil & Gas Operator | Jan 2024 |
| 251 | Midroc Operating Company | | Oil & Gas Operator | Apr 2013 |
| 252 | Mineral Ventures, Inc. | | Oil & Gas Operator | Dec 2023 |
| 253 | Mobil E&P North America Inc. | | Oil & Gas Operator | Jan 1994 |
| 254 | Mobil Oil E & P Southeast Inc | | Oil & Gas Operator | Sep 2013 |
| 255 | Monterey Resources LLC | Dallas, TX 75230 | Oil & Gas Operator | Oct 2019 |
| 256 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 257 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 258 | MRD Operating LLC | | Oil & Gas Operator | Dec 2016 |
| 259 | N. B. Hunt | | Oil & Gas Operator | May 1981 |
| 260 | Nabors Well Services LTD | | Oil Operator | Apr 2011 |
| 261 | Nadel & Gussman-Jetta Oper. Co. | | Oil & Gas Operator | Mar 2012 |
| 262 | Nadel And Gussman Ruston, LLC | | Oil & Gas Operator | Nov 2023 |
| 263 | Nebo Operating Company | | Oil & Gas Operator | Apr 1991 |
| 264 | Neilco | | Oil & Gas Operator | Nov 2023 |
| 265 | Nelson Energy, Inc. | | Oil & Gas Operator | Nov 2023 |
| 266 | Nelson Oil & Gas, Inc. | | Oil & Gas Operator | Aug 1995 |
| 267 | NGL Processing, LLC | | Oil Operator | Jun 2000 |
| 268 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |
| 269 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
| 270 | O'Brien Operating Company | | Oil & Gas Operator | Dec 2004 |
| 271 | O. G., Inc. | | Oil & Gas Operator | Nov 1992 |
| 272 | Occ Operating Co. | | Oil & Gas Operator | Apr 2019 |
| 273 | Onshore Pipeline Const Co Inc | | Oil & Gas Operator | Aug 1998 |
| 274 | Orx Resources, L.L.C. | Houston, TX 77067 | Oil & Gas Operator | May 2024 |
| 275 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 276 | Otis C. Coles, Jr. | | Oil & Gas Operator | Jan 1998 |
| 277 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | May 2024 |
| 278 | Ozark Production Company, Inc. | | Oil & Gas Operator | Jan 2024 |
| 279 | Pacific-Atlantic Oil Company, Inc. | | Oil & Gas Operator | Aug 2016 |
| 280 | Palmer Petroleum Inc. | Shreveport, LA 71106 | Oil & Gas Operator | May 2024 |
| 281 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | May 2024 |
| 282 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 283 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 284 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 285 | Petro Vest, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 2014 |
| 286 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2024 |
| 287 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 288 | Petrocan, Inc. | | Oil & Gas Operator | Apr 1998 |
| 289 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 290 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | May 2024 |
| 291 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 292 | Phillips Lake Corp. | | Oil Operator | Dec 1985 |
| 293 | Phillips Oil Company | Casper, WY 82602 | Oil & Gas Operator | Sep 1986 |
| 294 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 295 | Pine Island Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 296 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | May 2024 |
| 297 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2024 |
| 298 | Pioneer Prod. Corp. | | Oil & Gas Operator | Jun 1986 |
| 299 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 300 | Pool Company | | Oil Operator | Dec 2002 |