| 28401 | Summit Petroleum Corp And Muskegon Development C | | Oil Operator | Dec 2006 |
| 28402 | Summit Petroleum Corp Of MT Pleasant | | Oil & Gas Operator | Dec 2007 |
| 28403 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2024 |
| 28404 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 28405 | Summit Reed City Inc | | Oil Operator | Dec 2014 |
| 28406 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2025 |
| 28407 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | May 2025 |
| 28408 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 28409 | Summitt Energy, LLC | Wichita, KS 67218 | Oil Operator | Jan 2025 |
| 28410 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 28411 | Sumner Energy Inc | | Oil & Gas Operator | Dec 2024 |
| 28412 | Sumpf-Williams | | Gas Operator | Dec 1980 |
| 28413 | Sumrall Sharon | Midland, TX 79705-8238 | Oil & Gas Operator | Apr 2022 |
| 28414 | Sun Amer Petro Resources Inc | Moore, OK 73153-7133 | Oil & Gas Operator | May 1993 |
| 28415 | Sun Coulee, LLC | Martinsdale, MT 59053 | Oil Operator | Mar 2025 |
| 28416 | Sun Explor & Production Co | Oklahoma City, OK 73126 | Gas Operator | Oct 1984 |
| 28417 | Sun Exploration Co, Inc | | Oil Operator | Dec 2010 |
| 28418 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | May 2025 |
| 28419 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 28420 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
| 28421 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 28422 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 28423 | Sun River Operating, Inc. | Dallas, TX 75206 | Oil & Gas Operator | May 2025 |
| 28424 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 28425 | Sun Ventures | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28426 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | May 2025 |
| 28427 | Sunardo Energy, Inc. | Castle Rock, CO 80104 | Oil Operator | Jan 1997 |
| 28428 | Sunbelt Oil Investments Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 1993 |
| 28429 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 28430 | Sunburst Explora | | Oil Operator | May 1990 |
| 28431 | Sunburst Exploration, Inc. | | Oil & Gas Operator | Jul 2000 |
| 28432 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Mar 2025 |
| 28433 | Sunbury-Trenton Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1988 |
| 28434 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 28435 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 28436 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 28437 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | May 2025 |
| 28438 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 28439 | Suncor Energy Natural Gas America Inc | Greenwood VIllage, CO 80111 | Gas Operator | Feb 2010 |
| 28440 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | May 2025 |
| 28441 | Sundance Energy Corporation | | Oil & Gas Operator | Jan 2025 |
| 28442 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
| 28443 | Sundance Energy Oklahoma LLC Dba Seo LLC | Denver, CO 80202-3620 | Oil & Gas Operator | Nov 2021 |
| 28444 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 28445 | Sundance Oil Exploration Co | | Oil Operator | Mar 1986 |
| 28446 | Sundance Oil, Inc. | Norfolk, NE 68702 | Oil Operator | Aug 1998 |
| 28447 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 28448 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 28449 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | May 2025 |
| 28450 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 28451 | Sundgren, Stephen E. And Jackie | Rosalia, KS 67132 | Oil Operator | Jun 2023 |
| 28452 | Sundial Energy LLC | Oklahoma City, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 28453 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 28454 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | May 2025 |
| 28455 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jan 2025 |
| 28456 | Sundown Oil Operating, LLC | Graham, TX 76450 | Oil Operator | May 2025 |
| 28457 | Sundown Permian LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2018 |
| 28458 | Sunergon Oil Operating, LLC | Gainesville, TX 76240 | Oil Operator | May 2025 |
| 28459 | Sunex Resources Incorporated | | Oil Operator | Dec 1981 |
| 28460 | Sunfield Energy Company | Houston, TX 77084-5113 | Oil & Gas Operator | Jul 1999 |
| 28461 | Sunfire Energy | | Oil & Gas Operator | Jan 2025 |
| 28462 | Sunflower Energy, LLC | Overland Park, KS 66210 | Oil Operator | Dec 2019 |
| 28463 | Sunflower Exploration, LLC | Overland Park, KS 66210 | Gas Operator | Jan 2025 |
| 28464 | Sunflower Well Service, Inc. | Canton, KS 67428 | Oil & Gas Operator | Nov 2024 |
| 28465 | Sunland Enterprises Corp | Norman, OK 73071 | Oil Operator | Sep 2004 |
| 28466 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 28467 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | May 2025 |
| 28468 | Sunny Day Resour | | Oil Operator | Dec 1987 |
| 28469 | Sunny Shores Of Ohio Inc | Fountain Hills, AZ 85268 | Oil & Gas Operator | Dec 2008 |
| 28470 | Sunoco Partners Marketing | | Oil Operator | Apr 2023 |
| 28471 | Sunray DX Oil Co | | Gas Operator | Dec 1983 |
| 28472 | Sunray Energy, Inc. | Round Rock, TX 78683 | Oil & Gas Operator | Nov 2018 |
| 28473 | Sunray Oil Co., Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2013 |
| 28474 | Sunray Operating Company LLC | Sugar Land, TX 77498 | Oil & Gas Operator | May 2025 |
| 28475 | Sunray Petroleum Inc. | | Oil & Gas Operator | Feb 2025 |
| 28476 | Sunray-Taylor, Inc. | Midland, TX 79701 | Oil & Gas Operator | Nov 1993 |
| 28477 | Sunrise Enterprises | Bowie, TX 76230 | Oil & Gas Operator | Dec 2016 |
| 28478 | Sunrise Oil Corp | | Oil Operator | Mar 1992 |
| 28479 | Sunrise Oil, LTD. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2004 |
| 28480 | Sunset 2018, LLC | Farmington, NM 87401 | Oil & Gas Operator | Feb 2025 |
| 28481 | Sunset Energy L L C | Palm Harbor, FL 34683-3044 | Oil Operator | Dec 2007 |
| 28482 | Sunset Exploration Inc. | | Oil & Gas Operator | Feb 2025 |
| 28483 | Sunset Leases LLC | Ozona, TX 76943 | Oil Operator | May 2025 |
| 28484 | Sunset Well Service Holdings Inc | Midland, TX 79708 | Oil Operator | Apr 2013 |
| 28485 | Sunshine Oil & Gas, LLC | Madisonville, KY 42431 | Oil & Gas Operator | Dec 2023 |
| 28486 | Sunshine Valley Petroleum | Casper, WY 82605 | Oil & Gas Operator | Mar 2025 |
| 28487 | Sunstone Energy Company | Tulsa, OK 74153 | Oil & Gas Operator | Aug 2009 |
| 28488 | Sunterra Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 28489 | Sunwest Explorat | | Oil & Gas Operator | Nov 1985 |
| 28490 | Sunwest Oklahoma, Inc | Dallas, TX 75231 | Oil & Gas Operator | May 2023 |
| 28491 | Sunwest Operating Company L.L.C. | Englewood, CO 80155 | Oil & Gas Operator | Aug 2002 |
| 28492 | Suoco Oil Corporation | Pampa, TX 79066 | Oil & Gas Operator | May 2025 |
| 28493 | Supa Energy, Inc. | Shamrock, TX 79079 | Oil & Gas Operator | May 2025 |
| 28494 | Super Energy Inc. | | Oil & Gas Operator | Oct 1993 |
| 28495 | Super Heaters LLC | Houston, TX 77242-1328 | Oil Operator | Mar 2022 |
| 28496 | Super Oilwell Service | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 28497 | Superior - Austral | | Oil & Gas Operator | Mar 1978 |
| 28498 | Superior Companies Inc | Bartlesville, OK 74003-2621 | Oil & Gas Operator | May 2013 |
| 28499 | Superior Midstream, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 28500 | Superior Oil & Gas Company Of Oklahoma | Calumet, OK 73014-8528 | Oil & Gas Operator | Jan 2024 |