| 28301 | Sullivan - Wells | Amarillo, TX 79101 | Gas Operator | Jun 2025 |
| 28302 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2025 |
| 28303 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 28304 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 28305 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 28306 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 28307 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 28308 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 28309 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jun 2025 |
| 28310 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 28311 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 28312 | Summer Sun Gas, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Dec 2014 |
| 28313 | Summers Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2002 |
| 28314 | Summers Petroleum Inc | | Oil & Gas Operator | Dec 2002 |
| 28315 | Summers, Esther B. | Midland, MI 48640 | Gas Operator | Dec 2023 |
| 28316 | Summit Appalachia Operating Company, LLC | | Gas Operator | Dec 2021 |
| 28317 | Summit Discovery Res II LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2019 |
| 28318 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 28319 | Summit Energy LLC | | Oil & Gas Operator | Mar 2025 |
| 28320 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 28321 | Summit Essexville Inc | | Oil Operator | Dec 2014 |
| 28322 | Summit Exploration (California) LLC | | Oil & Gas Operator | Feb 2018 |
| 28323 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 28324 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 28325 | Summit Gas Resources Inc | Sheridan, WY 82801 | Gas Operator | Dec 2023 |
| 28326 | Summit Oil & Gas LLC | | Oil & Gas Operator | Apr 2025 |
| 28327 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Apr 2025 |
| 28328 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 28329 | Summit Petroleum Corp And Muskegon Development C | | Oil Operator | Dec 2006 |
| 28330 | Summit Petroleum Corp Of MT Pleasant | | Oil & Gas Operator | Dec 2007 |
| 28331 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2024 |
| 28332 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 28333 | Summit Reed City Inc | | Oil Operator | Dec 2014 |
| 28334 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2025 |
| 28335 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Jun 2025 |
| 28336 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 28337 | Summitt Energy, LLC | Wichita, KS 67218 | Oil Operator | Jan 2025 |
| 28338 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 28339 | Sumner Energy Inc | | Oil & Gas Operator | Dec 2024 |
| 28340 | Sumpf-Williams | | Gas Operator | Dec 1980 |
| 28341 | Sumrall Sharon | Midland, TX 79705-8238 | Oil & Gas Operator | Apr 2022 |
| 28342 | Sun Amer Petro Resources Inc | Moore, OK 73153-7133 | Oil & Gas Operator | May 1993 |
| 28343 | Sun Coulee, LLC | Martinsdale, MT 59053 | Oil Operator | Mar 2025 |
| 28344 | Sun Explor & Production Co | Oklahoma City, OK 73126 | Gas Operator | Oct 1984 |
| 28345 | Sun Exploration Co, Inc | | Oil Operator | Dec 2010 |
| 28346 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | Jun 2025 |
| 28347 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 28348 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
| 28349 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 28350 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 28351 | Sun River Operating, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2025 |
| 28352 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 28353 | Sun Ventures | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28354 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | Jun 2025 |
| 28355 | Sunardo Energy, Inc. | Castle Rock, CO 80104 | Oil Operator | Jan 1997 |
| 28356 | Sunbelt Oil Investments Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 1993 |
| 28357 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 28358 | Sunburst Explora | | Oil Operator | May 1990 |
| 28359 | Sunburst Exploration, Inc. | | Oil & Gas Operator | Jul 2000 |
| 28360 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Mar 2025 |
| 28361 | Sunbury-Trenton Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1988 |
| 28362 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 28363 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 28364 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 28365 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | Jun 2025 |
| 28366 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 28367 | Suncor Energy Natural Gas America Inc | Greenwood VIllage, CO 80111 | Gas Operator | Feb 2010 |
| 28368 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Jun 2025 |
| 28369 | Sundance Energy Corporation | | Oil & Gas Operator | Jan 2025 |
| 28370 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
| 28371 | Sundance Energy Oklahoma LLC Dba Seo LLC | Denver, CO 80202-3620 | Oil & Gas Operator | Nov 2021 |
| 28372 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 28373 | Sundance Oil Exploration Co | | Oil Operator | Mar 1986 |
| 28374 | Sundance Oil, Inc. | Norfolk, NE 68702 | Oil Operator | Aug 1998 |
| 28375 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 28376 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 28377 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Jun 2025 |
| 28378 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 28379 | Sundgren, Stephen E. And Jackie | Rosalia, KS 67132 | Oil Operator | Jun 2023 |
| 28380 | Sundial Energy LLC | Oklahoma City, OK 73013 | Oil & Gas Operator | Apr 2025 |
| 28381 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 28382 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Jun 2025 |
| 28383 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Feb 2025 |
| 28384 | Sundown Oil Operating, LLC | Graham, TX 76450 | Oil Operator | Jun 2025 |
| 28385 | Sundown Permian LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2018 |
| 28386 | Sunergon Oil Operating, LLC | Gainesville, TX 76240 | Oil Operator | Jun 2025 |
| 28387 | Sunex Resources Incorporated | | Oil Operator | Dec 1981 |
| 28388 | Sunfield Energy Company | Houston, TX 77084-5113 | Oil & Gas Operator | Jul 1999 |
| 28389 | Sunfire Energy | | Oil & Gas Operator | Feb 2025 |
| 28390 | Sunflower Energy, LLC | Overland Park, KS 66210 | Oil Operator | Dec 2019 |
| 28391 | Sunflower Exploration, LLC | Overland Park, KS 66210 | Gas Operator | Feb 2025 |
| 28392 | Sunflower Well Service, Inc. | Canton, KS 67428 | Oil & Gas Operator | Nov 2024 |
| 28393 | Sunland Enterprises Corp | Norman, OK 73071 | Oil Operator | Sep 2004 |
| 28394 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2025 |
| 28395 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | Jun 2025 |
| 28396 | Sunny Day Resour | | Oil Operator | Dec 1987 |
| 28397 | Sunny Shores Of Ohio Inc | Fountain Hills, AZ 85268 | Oil & Gas Operator | Dec 2008 |
| 28398 | Sunoco Partners Marketing | | Oil Operator | Apr 2023 |
| 28399 | Sunray DX Oil Co | | Gas Operator | Dec 1983 |
| 28400 | Sunray Energy, Inc. | Round Rock, TX 78683 | Oil & Gas Operator | Nov 2018 |