| 4301 | Strata Energy, Inc. | | Oil & Gas Operator | Sep 1983 |
| 4302 | Strataform, Inc. | | Gas Operator | Jun 2002 |
| 4303 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Nov 2024 |
| 4304 | Strike Energy Corp | Blackwell, OK 74631 | Oil & Gas Operator | Jul 2023 |
| 4305 | Striker Petroleum Corporation | Englewood, CO 80111 | Oil & Gas Operator | Dec 1999 |
| 4306 | Striper Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2002 |
| 4307 | Stroud Operating LLC | | Oil & Gas Operator | Dec 2012 |
| 4308 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Nov 2024 |
| 4309 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2024 |
| 4310 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Nov 2024 |
| 4311 | Stuart Oil | | Oil Operator | Jul 2024 |
| 4312 | Studley Resources Corporation | Humble, TX 77347 | Oil & Gas Operator | Dec 1996 |
| 4313 | STZ Petroleum Inc. | Houston, TX 77268 | Oil & Gas Operator | Dec 1997 |
| 4314 | Subsurface Resources Inc | Logan, UT 84321 | Oil & Gas Operator | Aug 1990 |
| 4315 | Suburban Propane Expl Co, Inc. | | Oil & Gas Operator | Jun 1983 |
| 4316 | Suburban Propane Gas Corp. | | Oil & Gas Operator | Sep 1980 |
| 4317 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Nov 2024 |
| 4318 | Sugar Bowl Gas Corp. | | Oil Operator | Dec 1983 |
| 4319 | Sugar Bowl Industrial Gas Corp | | Oil Operator | Dec 1983 |
| 4320 | Sugar Creek Environmental, LLC | | Oil Operator | Jul 2024 |
| 4321 | Sugar Creek Producing Company | | Oil & Gas Operator | Dec 2010 |
| 4322 | Sugar Creek Producing Company, LLC | | Oil & Gas Operator | Jul 2024 |
| 4323 | Sugar Oil Company | | Oil & Gas Operator | Feb 2011 |
| 4324 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 4325 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Nov 2024 |
| 4326 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 4327 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 4328 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 4329 | Summit Oil & Gas LLC | | Oil & Gas Operator | Sep 2024 |
| 4330 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Aug 2024 |
| 4331 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 4332 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 4333 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 4334 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2024 |
| 4335 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 4336 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Aug 2024 |
| 4337 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 4338 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 4339 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 4340 | Sundance Energy Corporation | | Oil & Gas Operator | Jul 2024 |
| 4341 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Nov 2024 |
| 4342 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2024 |
| 4343 | Sunex Resources Incorporated | | Oil Operator | Dec 1981 |
| 4344 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2024 |
| 4345 | Super Energy Inc. | | Oil & Gas Operator | Oct 1993 |
| 4346 | Superior - Austral | | Oil & Gas Operator | Apr 1978 |
| 4347 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
| 4348 | Superior Operating LLC | | Oil Operator | Aug 2020 |
| 4349 | Superior Resources Corporation | | Oil Operator | Apr 2006 |
| 4350 | Superior-American Quasar | | Oil & Gas Operator | Jan 1981 |
| 4351 | Superior-Tenneco | | Oil & Gas Operator | Jun 1982 |
| 4352 | Sutton Joint Account | | Oil Operator | Mar 1988 |
| 4353 | Sutton-Gerard Et Al | | Oil & Gas Operator | Jan 1990 |
| 4354 | Sutton-Gerard-Sawyer | | Oil & Gas Operator | Jan 1990 |
| 4355 | Sutton-Sawyer | | Oil Operator | Mar 1989 |
| 4356 | SV Energy Company, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2017 |
| 4357 | SW Associates | | Oil & Gas Operator | Dec 1985 |
| 4358 | Swag Oil And Gas Company, Inc. | | Oil & Gas Operator | Jul 1982 |
| 4359 | Swampfox Oilfield Services, LLC | | Oil & Gas Operator | Jun 2024 |
| 4360 | Swan Lake Properties, Inc. | | Oil Operator | Jul 1987 |
| 4361 | SWD Acidizing, Inc. | | Oil Operator | Feb 2014 |
| 4362 | SWD, Inc. | | Oil Operator | Jul 2024 |
| 4363 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 4364 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 4365 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |
| 4366 | SWN Production (Louisiana), LLC | | Oil & Gas Operator | May 2024 |
| 4367 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Sep 2024 |
| 4368 | Sydson D'Oro Expl. Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 4369 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Nov 2024 |
| 4370 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 4371 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 4372 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 4373 | T & F Oil Company | | Oil Operator | Jun 2024 |
| 4374 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 4375 | T & L Oil Production | | Oil Operator | Jul 2024 |
| 4376 | T & L Production Company | | Oil Operator | Feb 1984 |
| 4377 | T & M Gauging | | Oil Operator | Oct 2006 |
| 4378 | T & R Oil | Mapleton, KS 66754 | Oil & Gas Operator | May 2018 |
| 4379 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 4380 | T-M Well Service | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2004 |
| 4381 | T-M Well Service, L.L.C. | Jefferson, TX 75657 | Oil & Gas Operator | Jul 2024 |
| 4382 | T. And M. Production | Oil City, LA 71061 | Oil & Gas Operator | Nov 2024 |
| 4383 | T. C. Morrow Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 4384 | T. D. Tedder | | Oil Operator | Dec 1991 |
| 4385 | T. J. Guido | | Oil & Gas Operator | Oct 1998 |
| 4386 | T. J. Lundy | | Oil Operator | Jul 2024 |
| 4387 | T. J. Operating Co., Inc. | | Oil & Gas Operator | Aug 1998 |
| 4388 | T. L. James & Co., Inc. | | Oil & Gas Operator | Oct 1992 |
| 4389 | T. M. Hopkins | | Oil & Gas Operator | Aug 2007 |
| 4390 | T. N. T. Energy Co. | Belcher, LA 71004 | Oil Operator | May 1991 |
| 4391 | T. N. T. Tribal - Luffey | | Gas Operator | Oct 1994 |
| 4392 | T. O. Kimbrell, LLC | | Oil & Gas Operator | Aug 2024 |
| 4393 | T. W. McGuire & Associates, Inc. | | Oil & Gas Operator | Nov 2018 |
| 4394 | T. West Bullock, SR. | | Oil & Gas Operator | Mar 1989 |
| 4395 | T.B. Lanford Et Al | | Oil Operator | Apr 1987 |
| 4396 | T.O. Greer Productions | | Oil & Gas Operator | Aug 2013 |
| 4397 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 4398 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 4399 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 4400 | Tabco Producing Co. | | Oil & Gas Operator | Jan 1998 |