| 201 | Kerry Petroleum Co Inc | Midland, TX 79708 | Oil & Gas Operator | Jun 2010 |
| 202 | Kidd Oil & Gas, LC | Dallas, TX 75219 | Oil & Gas Operator | Apr 1999 |
| 203 | Kinder Morgan Production Co LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2026 |
| 204 | Knox Industries, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Sep 2026 |
| 205 | KRF Production Company LLC | Houston, TX 77269 | Oil & Gas Operator | Sep 2026 |
| 206 | Kriti Te Energy, Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 2017 |
| 207 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2026 |
| 208 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 209 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2026 |
| 210 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 211 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Sep 2026 |
| 212 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | May 2026 |
| 213 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 214 | Linn Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 215 | Lone Star Operations LLC | Sweetwater, TX 79556 | Oil & Gas Operator | Sep 2026 |
| 216 | Lunar Oil Company | Midland, TX 79708 | Oil & Gas Operator | Feb 1999 |
| 217 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 218 | Lyon Operating Company Inc.(Iii) | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2026 |
| 219 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 220 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 221 | Manti Operating Company | Covington, LA 70435 | Oil & Gas Operator | Sep 2026 |
| 222 | Manzano Oil Corporation | Roswell, NM 88202 | Oil & Gas Operator | Feb 2005 |
| 223 | Maralo, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1998 |
| 224 | Maralo, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 225 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Jun 2026 |
| 226 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 227 | Marwell Petroleum LTD Partnrship | Houston, TX 77027 | Oil & Gas Operator | Sep 2026 |
| 228 | Masada Development Company | Lubbock, TX 79416 | Oil & Gas Operator | Nov 2021 |
| 229 | Maverick Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 230 | Maynard Oil Co. | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 231 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2026 |
| 232 | McCabe Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2009 |
| 233 | McCann Corporation | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 234 | McClure Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 235 | McCrary & Franklin, Inc. | Post, TX 79356 | Oil & Gas Operator | May 2012 |
| 236 | McCutchin, Jerry | Dallas, TX 75380 | Oil & Gas Operator | Mar 2008 |
| 237 | McDonald Production | Lubbock, TX 79408 | Oil & Gas Operator | Mar 2003 |
| 238 | McDonald Production, LLC | Lubbock, TX 79408 | Oil Operator | Sep 2026 |
| 239 | McFarland & Scobey, Inc. | El Paso, TX 79947 | Oil & Gas Operator | Sep 2026 |
| 240 | Melton, Joe, DRLG. Co., Inc. | Midland, TX 79704 | Oil & Gas Operator | Dec 2004 |
| 241 | Melzer Exploration Company | Midland, TX 79702-2083 | Oil & Gas Operator | May 2013 |
| 242 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
| 243 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Sep 2026 |
| 244 | Midland Oil And Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2026 |
| 245 | Midpar L.P. | Midland, TX 79702 | Oil & Gas Operator | Feb 1995 |
| 246 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 247 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 248 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 249 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Sep 2026 |
| 250 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Jan 2026 |
| 251 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Sep 2026 |
| 252 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 253 | Mulloy Operating, Inc. | Midland, TX 79707 | Oil & Gas Operator | Sep 2026 |
| 254 | Munn, W. H. Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2002 |
| 255 | Musselman, Owen & King Oper.,Inc | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 256 | NBL Permian LLC | Houston, TX 77070 | Oil & Gas Operator | Aug 2018 |
| 257 | New Atlantis Oil & Expl., LLC | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2012 |
| 258 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Sep 2026 |
| 259 | Newton Corp.,The | Dallas, TX 75251 | Oil & Gas Operator | Sep 2026 |
| 260 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 261 | North American Royalties, Inc. | Chattanooga, TN 37408 | Oil & Gas Operator | Oct 2001 |
| 262 | O'Neill Properties, LTD. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 263 | Occidental Energy Marketing, Inc. | Houston, TX 77227 | Gas Operator | Sep 2015 |
| 264 | Oklahoma Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2013 |
| 265 | Omimex Energy, Inc. | Fort Worth, TX 76120 | Oil & Gas Operator | Apr 2026 |
| 266 | Onaroll Operating LLC | Lubbock, TX 79423 | Oil & Gas Operator | Sep 2026 |
| 267 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 268 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Sep 2026 |
| 269 | P & R Oil Company | Post, TX 79356 | Oil & Gas Operator | Sep 2026 |
| 270 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Sep 2026 |
| 271 | Paladin Exploration Co., Inc. | Plano, TX 75093 | Oil & Gas Operator | Feb 1995 |
| 272 | Palmer Oil Properties | Post, TX 79356 | Oil & Gas Operator | Sep 2026 |
| 273 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 274 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 275 | Parish, John R. | Andrews, TX 79714 | Oil & Gas Operator | Sep 2026 |
| 276 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 277 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 278 | Patrick Pet. Corp. Of Michigan | Houston, TX 77227 | Oil & Gas Operator | Aug 1995 |
| 279 | Patriot Production LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2023 |
| 280 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 281 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 282 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 283 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 284 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 285 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 286 | Pegasus Operating, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Dec 2025 |
| 287 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Jun 2026 |
| 288 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 289 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 290 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 291 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 292 | Pierce Junction Petroleum Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
| 293 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Sep 2026 |
| 294 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 295 | Platinum Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 296 | PMB Energy, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Sep 2026 |
| 297 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 298 | Pop Operating Company | Denton, TX 76202 | Oil & Gas Operator | Sep 2026 |
| 299 | Powell Properties, Inc. | Los Altos, CA 94024 | Oil & Gas Operator | Sep 2026 |
| 300 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |