| 28301 | Swenson Backhoe Service, Inc. | Electra, TX 76360 | Oil Operator | Nov 2025 |
| 28302 | Swenson, Clifford E. | Henrietta, TX 76365 | Oil & Gas Operator | Nov 2025 |
| 28303 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Jul 2025 |
| 28304 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 28305 | Swepi LP And Miller Brothers | | Oil & Gas Operator | Oct 1992 |
| 28306 | Swepi/Western Division | Houston, TX 77210 | Oil & Gas Operator | Aug 1984 |
| 28307 | Swevco-Sabw LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2025 |
| 28308 | Swiess & Thomas | San Antonio, TX 78247 | Oil Operator | Nov 2025 |
| 28309 | Swift A W & Company Inc | Sand Springs, OK 74063-5124 | Oil Operator | Jun 2003 |
| 28310 | Swift Energy Com | | Oil & Gas Operator | Sep 1995 |
| 28311 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 28312 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |
| 28313 | Swinea Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2015 |
| 28314 | Swingle Drilling Inc | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2024 |
| 28315 | Swinkwood Oil Co | | Oil Operator | Apr 2015 |
| 28316 | SWJN Oil Company | Kilgore, TX 75663 | Oil Operator | Nov 2025 |
| 28317 | SWN Production (Louisiana), LLC | | Oil & Gas Operator | Dec 2024 |
| 28318 | SWN Production (Ohio), LLC | Morgantown, WV 26508 | Oil & Gas Operator | Mar 2024 |
| 28319 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Aug 2025 |
| 28320 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 28321 | Swo & Ism, LLC | | Oil & Gas Operator | Dec 2021 |
| 28322 | Swope Corp. | Austin, TX 78735 | Oil & Gas Operator | Nov 2025 |
| 28323 | Swordfish Energy Operating, LLC | Houston, TX 77060 | Oil & Gas Operator | Nov 2025 |
| 28324 | SWS | Humble, TX 77338 | Oil Operator | Nov 2025 |
| 28325 | SWS Operating LLC | Lawton, OK 73501-3236 | Oil Operator | Sep 2024 |
| 28326 | SWV Energy Operating LLC | Spring, TX 77379 | Gas Operator | Dec 2018 |
| 28327 | SX54, LLC | Sheridan, WY 82801 | Oil Operator | Nov 2017 |
| 28328 | Sycamore Development Partners LLC | | Oil & Gas Operator | Sep 2025 |
| 28329 | Sydri Operating, LLC | Dallas, TX 75231 | Oil & Gas Operator | Nov 2025 |
| 28330 | Sydson D'Oro Exploration Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 28331 | Sydson Energy, Inc. | Houston, TX 77027 | Oil & Gas Operator | Nov 2025 |
| 28332 | Syj Oil & Gas | San Antonio, TX 78209 | Oil Operator | Sep 2000 |
| 28333 | Syj Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2025 |
| 28334 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Nov 2025 |
| 28335 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 28336 | Sylvite Corp | Tulsa, OK 741363908 | Oil & Gas Operator | Dec 2000 |
| 28337 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | Nov 2025 |
| 28338 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | Nov 2025 |
| 28339 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |
| 28340 | Syndex Resources, Inc. | Wellesley, MA 02181-000 | Oil & Gas Operator | Dec 2021 |
| 28341 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 28342 | Synergy Development Corp | | Oil Operator | Apr 2011 |
| 28343 | Synergy Offshore LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2022 |
| 28344 | Synergy Oil & Gas LLC | | Oil & Gas Operator | Aug 2025 |
| 28345 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 28346 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 28347 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 28348 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Nov 2025 |
| 28349 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Jul 2024 |
| 28350 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 28351 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |
| 28352 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | Nov 2025 |
| 28353 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | Nov 2025 |
| 28354 | Szumigala, Edward R. & Ruth A. | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |
| 28355 | T & A Resources LLC | Salyersville, KY 41465 | Oil Operator | Dec 2023 |
| 28356 | T & B Drilling, Inc | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 28357 | T & B Oil Company Inc | Ardmore, OK 73401-3709 | Oil & Gas Operator | Apr 2015 |
| 28358 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 28359 | T & C MFG. & Operating, Inc. | Great Bend, KS 67530 | Oil Operator | May 2022 |
| 28360 | T & C Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2024 |
| 28361 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2025 |
| 28362 | T & D Oil Co. | Victoria, KS 67671 | Oil Operator | Apr 1996 |
| 28363 | T & D Oil Compan | | Oil Operator | Jan 1992 |
| 28364 | T & D Oil LLC (Osage Only) | | Oil & Gas Operator | Jul 2025 |
| 28365 | T & F Exploration, LP | Pittsburgh, PA 15241-1375 | Oil & Gas Operator | Oct 2024 |
| 28366 | T & F Oil Company | | Oil Operator | Jan 2025 |
| 28367 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 28368 | T & G Energy LLC | Dallas, TX 75230 | Oil Operator | Nov 2010 |
| 28369 | T & G Holding LLC | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Mar 2015 |
| 28370 | T & G Oil Operations LLC | | Oil Operator | Jun 2025 |
| 28371 | T & G Oil, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2010 |
| 28372 | T & I Petroleum Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2005 |
| 28373 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Aug 2025 |
| 28374 | T & J Operating | Ada, OK 74821-1547 | Oil Operator | Feb 2012 |
| 28375 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 28376 | T & L Oil Production | | Oil Operator | Jan 2025 |
| 28377 | T & L Production | | Oil Operator | May 1987 |
| 28378 | T & L Production Company | | Oil Operator | Feb 1984 |
| 28379 | T & M Gauging | | Oil Operator | Oct 2006 |
| 28380 | T & M Oil & Royalty | Ada, OK 74820 | Oil Operator | Feb 2012 |
| 28381 | T & M Oil Company | Midlothian, TX 76065 | Oil & Gas Operator | Nov 2025 |
| 28382 | T & O Gas Co | | Oil Operator | May 2001 |
| 28383 | T & P Exploration | Addison, TX 75006 | Oil & Gas Operator | Aug 1993 |
| 28384 | T & P Oil & Gas, L.L.C. | Overland Park, KS 66212 | Oil Operator | Dec 2009 |
| 28385 | T & R Investments, Inc. | Borger, TX 79008 | Oil & Gas Operator | Nov 1995 |
| 28386 | T & R Oil Company, A General Partnership | Moline, KS 67353 | Oil Operator | Dec 2019 |
| 28387 | T & S Oil & Gas, LLC | Graham, TX 76450 | Gas Operator | Nov 2025 |
| 28388 | T & T Compression Inc | Clymer, PA 15728-1014 | Gas Operator | Dec 2024 |
| 28389 | T & T Contracting Dba Hulman Contracting, LLC | Rockfield, KY 42274 | Oil & Gas Operator | Dec 2023 |
| 28390 | T & T Oil Co. | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2002 |
| 28391 | T & T Production Co. | Victoria, TX 77902 | Oil & Gas Operator | Feb 1995 |
| 28392 | T & W Ward Oil LLC | Blackwell, OK 74631 | Oil Operator | Jul 2025 |
| 28393 | T - C Oil Company | Refugio, TX 78377 | Oil & Gas Operator | Jan 2012 |
| 28394 | T And DS Lube Doctors LLC | Carlsbad, NM 88220 | Gas Operator | Aug 2025 |
| 28395 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | Aug 2025 |
| 28396 | T B C Inc | Coweta, OK 74429 | Oil & Gas Operator | Apr 2020 |
| 28397 | T B Drilling Co | Moxahala, OH 43761 | Oil & Gas Operator | Dec 1998 |
| 28398 | T B K Energy Company | Brenham, TX 77833 | Oil & Gas Operator | Aug 2025 |
| 28399 | T Bar M Energy Resources LLC | Mounds, OK 74047 | Oil & Gas Operator | Jul 2025 |
| 28400 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |