| 28701 | Sugar Creek Environmental, LLC | | Oil Operator | Jan 2025 |
| 28702 | Sugar Creek Producing Company | | Oil & Gas Operator | Dec 2010 |
| 28703 | Sugar Creek Producing Company, LLC | | Oil & Gas Operator | Jan 2025 |
| 28704 | Sugar Enterprises, LLC | Tyler, TX 75713 | Oil & Gas Operator | Apr 2025 |
| 28705 | Sugar Oil Company | | Oil & Gas Operator | Feb 2011 |
| 28706 | Sugar Rock Incorporated | | Oil & Gas Operator | Dec 2021 |
| 28707 | Suits & Jeans, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2025 |
| 28708 | Sujen Enterprise | | Oil Operator | Sep 1989 |
| 28709 | Sukay Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 28710 | Sullivan & Clark | Youngsville, PA 16371-0194 | Oil & Gas Operator | Dec 1998 |
| 28711 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 28712 | Sullivan - Wells | Amarillo, TX 79101 | Gas Operator | Apr 2025 |
| 28713 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2025 |
| 28714 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 28715 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 28716 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 28717 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 28718 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 28719 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 28720 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Apr 2025 |
| 28721 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 28722 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 28723 | Summer Sun Gas, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Dec 2014 |
| 28724 | Summers Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2002 |
| 28725 | Summers Petroleum Inc | | Oil & Gas Operator | Dec 2002 |
| 28726 | Summers, Esther B. | Midland, MI 48640 | Gas Operator | Dec 2023 |
| 28727 | Summit Appalachia Operating Company, LLC | | Gas Operator | Dec 2021 |
| 28728 | Summit Discovery Res II LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2019 |
| 28729 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 28730 | Summit Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 28731 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 28732 | Summit Essexville Inc | | Oil Operator | Dec 2014 |
| 28733 | Summit Exploration (California) LLC | | Oil & Gas Operator | Feb 2018 |
| 28734 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 28735 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 28736 | Summit Gas Resources Inc | Sheridan, WY 82801 | Gas Operator | Dec 2023 |
| 28737 | Summit Oil & Gas LLC | | Oil & Gas Operator | Feb 2025 |
| 28738 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Feb 2025 |
| 28739 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 28740 | Summit Petroleum Corp And Muskegon Development C | | Oil Operator | Dec 2006 |
| 28741 | Summit Petroleum Corp Of MT Pleasant | | Oil & Gas Operator | Dec 2007 |
| 28742 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2023 |
| 28743 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 28744 | Summit Reed City Inc | | Oil Operator | Dec 2014 |
| 28745 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2025 |
| 28746 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Apr 2025 |
| 28747 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 28748 | Summitt Energy, LLC | Wichita, KS 67218 | Oil Operator | Dec 2024 |
| 28749 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 28750 | Sumner Energy Inc | | Oil & Gas Operator | Dec 2024 |
| 28751 | Sumpf-Williams | | Gas Operator | Dec 1980 |
| 28752 | Sumrall Sharon | Midland, TX 79705-8238 | Oil & Gas Operator | Apr 2022 |
| 28753 | Sun Amer Petro Resources Inc | Moore, OK 73153-7133 | Oil & Gas Operator | May 1993 |
| 28754 | Sun Coulee, LLC | Martinsdale, MT 59053 | Oil Operator | Dec 2024 |
| 28755 | Sun Explor & Production Co | Oklahoma City, OK 73126 | Gas Operator | Oct 1984 |
| 28756 | Sun Exploration Co, Inc | | Oil Operator | Dec 2010 |
| 28757 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | Apr 2025 |
| 28758 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 28759 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
| 28760 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 28761 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 28762 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 28763 | Sun River Operating, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Apr 2025 |
| 28764 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 28765 | Sun Ventures | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28766 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | Apr 2025 |
| 28767 | Sunardo Energy, Inc. | Castle Rock, CO 80104 | Oil Operator | Jan 1997 |
| 28768 | Sunbelt Oil Investments Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 1993 |
| 28769 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 28770 | Sunburst Explora | | Oil Operator | May 1990 |
| 28771 | Sunburst Exploration, Inc. | | Oil & Gas Operator | Jul 2000 |
| 28772 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Jan 2025 |
| 28773 | Sunbury-Trenton Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1988 |
| 28774 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 28775 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 28776 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 28777 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 28778 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 28779 | Suncor Energy Natural Gas America Inc | Greenwood VIllage, CO 80111 | Gas Operator | Feb 2010 |
| 28780 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Apr 2025 |
| 28781 | Sundance Energy Corporation | | Oil & Gas Operator | Jan 2025 |
| 28782 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
| 28783 | Sundance Energy Oklahoma LLC Dba Seo LLC | Denver, CO 80202-3620 | Oil & Gas Operator | Nov 2021 |
| 28784 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 28785 | Sundance Oil Exploration Co | | Oil Operator | Mar 1986 |
| 28786 | Sundance Oil, Inc. | Norfolk, NE 68702 | Oil Operator | Aug 1998 |
| 28787 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 28788 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 28789 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Apr 2025 |
| 28790 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 28791 | Sundgren, Stephen E. And Jackie | Rosalia, KS 67132 | Oil Operator | Jun 2023 |
| 28792 | Sundial Energy LLC | Oklahoma City, OK 73013 | Oil & Gas Operator | Feb 2025 |
| 28793 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 28794 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Apr 2025 |
| 28795 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 28796 | Sundown Oil Operating, LLC | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 28797 | Sundown Permian LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2018 |
| 28798 | Sunergon Oil Operating, LLC | Gainesville, TX 76240 | Oil Operator | Apr 2025 |
| 28799 | Sunex Resources Incorporated | | Oil Operator | Dec 1981 |
| 28800 | Sunfield Energy Company | Houston, TX 77084-5113 | Oil & Gas Operator | Jul 1999 |