| 27401 | Sukay Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 27402 | Sullivan & Clark | Youngsville, PA 16371-0194 | Oil & Gas Operator | Dec 1998 |
| 27403 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 27404 | Sullivan - Wells | Amarillo, TX 79101 | Gas Operator | Apr 2024 |
| 27405 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2023 |
| 27406 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 27407 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 27408 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 27409 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 27410 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 27411 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 27412 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Apr 2024 |
| 27413 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 27414 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 27415 | Summer Sun Gas, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Dec 2014 |
| 27416 | Summers Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2002 |
| 27417 | Summers, Esther B. | Midland, MI 48640 | Gas Operator | Dec 2022 |
| 27418 | Summit Appalachia Operating Company, LLC | | Gas Operator | Dec 2021 |
| 27419 | Summit Discovery Res II LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2019 |
| 27420 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 27421 | Summit Energy LLC | | Oil & Gas Operator | Dec 2023 |
| 27422 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 27423 | Summit Essexville Inc | | Oil Operator | Dec 2014 |
| 27424 | Summit Exploration (California) LLC | | Oil & Gas Operator | Feb 2018 |
| 27425 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 27426 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 27427 | Summit Gas Resources Inc | Sheridan, WY 82801 | Gas Operator | Dec 2023 |
| 27428 | Summit Oil & Gas LLC | | Oil & Gas Operator | Feb 2024 |
| 27429 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Feb 2024 |
| 27430 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 27431 | Summit Petroleum Corp And Muskegon Development C | | Oil Operator | Dec 2006 |
| 27432 | Summit Petroleum Corp Of MT Pleasant | | Oil & Gas Operator | Dec 2007 |
| 27433 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2022 |
| 27434 | Summit Petroleum LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 27435 | Summit Reed City Inc | | Oil Operator | Dec 2014 |
| 27436 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Dec 2023 |
| 27437 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Apr 2024 |
| 27438 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 27439 | Summitt Energy, LLC | Wichita, KS 67218 | Oil Operator | Dec 2023 |
| 27440 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 27441 | Sumner Energy Inc | | Oil Operator | Dec 2016 |
| 27442 | Sumpf-Williams | | Gas Operator | Dec 1980 |
| 27443 | Sumrall Sharon | Midland, TX 79705-8238 | Oil & Gas Operator | Apr 2022 |
| 27444 | Sun Coulee, LLC | Martinsdale, MT 59053 | Oil Operator | Nov 2023 |
| 27445 | Sun Exploration Co, Inc | | Oil Operator | Dec 2010 |
| 27446 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | Apr 2024 |
| 27447 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 27448 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
| 27449 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 27450 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 27451 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2023 |
| 27452 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 27453 | Sun Ventures | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 27454 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | Apr 2024 |
| 27455 | Sunardo Energy, Inc. | Castle Rock, CO 80104 | Oil Operator | Jan 1997 |
| 27456 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 27457 | Sunburst Explora | | Oil Operator | May 1990 |
| 27458 | Sunburst Exploration, Inc. | | Oil & Gas Operator | Jul 2000 |
| 27459 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Feb 2024 |
| 27460 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 27461 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 27462 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 27463 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | Apr 2024 |
| 27464 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 27465 | Suncor Energy Natural Gas America Inc | Greenwood VIllage, CO 80111 | Gas Operator | Feb 2010 |
| 27466 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Apr 2024 |
| 27467 | Sundance Energy Corporation | | Oil & Gas Operator | Jan 2024 |
| 27468 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
| 27469 | Sundance Energy Oklahoma LLC Dba Seo LLC | | Oil & Gas Operator | Nov 2021 |
| 27470 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 27471 | Sundance Oil Exploration Co | | Oil Operator | Mar 1986 |
| 27472 | Sundance Oil, Inc. | Norfolk, NE 68702 | Oil Operator | Aug 1998 |
| 27473 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 27474 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 27475 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Apr 2024 |
| 27476 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 27477 | Sundgren, Stephen E. And Jackie | Rosalia, KS 67132 | Oil Operator | Jun 2023 |
| 27478 | Sundial Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 27479 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 27480 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Apr 2024 |
| 27481 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2023 |
| 27482 | Sunergon Oil Operating, LLC | Gainesville, TX 76240 | Oil Operator | Apr 2024 |
| 27483 | Sunex Resources Incorporated | | Oil Operator | Dec 1981 |
| 27484 | Sunfield Energy Company | Houston, TX 77084-5113 | Oil & Gas Operator | Jul 1999 |
| 27485 | Sunfire Energy | | Oil & Gas Operator | Nov 2023 |
| 27486 | Sunflower Energy, LLC | Overland Park, KS 66210 | Oil Operator | Dec 2019 |
| 27487 | Sunflower Exploration, LLC | Overland Park, KS 66210 | Gas Operator | Dec 2023 |
| 27488 | Sunflower Well Service, Inc. | Canton, KS 67428 | Oil & Gas Operator | Oct 2023 |
| 27489 | Sunland Enterprises Corp | Norman, OK 73071 | Oil Operator | Sep 2004 |
| 27490 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2024 |
| 27491 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | Apr 2024 |
| 27492 | Sunny Day Resour | | Oil Operator | Dec 1987 |
| 27493 | Sunnybook Transmission Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 1992 |
| 27494 | Sunoco Partners Marketing | | Oil Operator | Apr 2023 |
| 27495 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 27496 | Sunray DX Oil Co | | Gas Operator | Dec 1983 |
| 27497 | Sunray Energy, Inc. | Round Rock, TX 78683 | Oil & Gas Operator | Nov 2018 |
| 27498 | Sunray Oil Co., Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2013 |
| 27499 | Sunray Operating Company LLC | Sugar Land, TX 77498 | Oil & Gas Operator | Apr 2024 |
| 27500 | Sunray Petroleum Inc. | | Oil & Gas Operator | Dec 2023 |