| 2601 | Suburban Propane Gas Corp. | | Oil & Gas Operator | Sep 1980 |
| 2602 | Success Oil Company, Inc. | Beverly Hills, CA 90211 | Oil & Gas Operator | Sep 2025 |
| 2603 | Sudberry Mark E Dba Gushing Oil Co | Trophy Club, TX 76262-5531 | Oil Operator | Jan 2020 |
| 2604 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Sep 2025 |
| 2605 | Sue-Ann Production Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 2606 | Suemaur Expl. & Prod., LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jun 2024 |
| 2607 | Suemaur Exploration, Inc. | Corpus Chrsti, TX 78470 | Oil & Gas Operator | Mar 2008 |
| 2608 | Suemaur Operating LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Sep 2025 |
| 2609 | Suerte Oil & Gas LLC | Caney, KS 67333 | Oil Operator | Apr 2025 |
| 2610 | Suerte Oil Compa | | Oil & Gas Operator | Oct 1995 |
| 2611 | Suerte Oil Company | Howard, KS 67349 | Oil & Gas Operator | Jan 2017 |
| 2612 | Sugar Bowl Gas Corp. | | Oil Operator | Dec 1983 |
| 2613 | Sugar Bowl Industrial Gas Corp | | Oil Operator | Dec 1983 |
| 2614 | Sugar Creek Environmental, LLC | | Oil Operator | Jan 2025 |
| 2615 | Sugar Creek Producing Company | | Oil & Gas Operator | Dec 2010 |
| 2616 | Sugar Creek Producing Company, LLC | | Oil & Gas Operator | Jan 2025 |
| 2617 | Sugar Enterprises, LLC | Tyler, TX 75713 | Oil & Gas Operator | Sep 2025 |
| 2618 | Sugar Oil Company | | Oil & Gas Operator | Feb 2011 |
| 2619 | Sugar Rock Incorporated | | Oil & Gas Operator | Dec 2021 |
| 2620 | Suits & Jeans, LLC | Pampa, TX 79066 | Oil & Gas Operator | Sep 2025 |
| 2621 | Sujen Enterprise | | Oil Operator | Sep 1989 |
| 2622 | Sukay Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 2623 | Sullivan & Clark | Youngsville, PA 16371-0194 | Oil & Gas Operator | Dec 1998 |
| 2624 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 2625 | Sullivan - Wells | Amarillo, TX 79101 | Gas Operator | Sep 2025 |
| 2626 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 2627 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 2628 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 2629 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 2630 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 2631 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 2632 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 2633 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Sep 2025 |
| 2634 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 2635 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 2636 | Summer Sun Gas, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Dec 2014 |
| 2637 | Summers Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2002 |
| 2638 | Summers Petroleum Inc | | Oil & Gas Operator | Dec 2002 |
| 2639 | Summers, Esther B. | Midland, MI 48640 | Gas Operator | Dec 2024 |
| 2640 | Summit Appalachia Operating Company, LLC | | Gas Operator | Dec 2021 |
| 2641 | Summit Discovery Res II LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2019 |
| 2642 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 2643 | Summit Energy LLC | | Oil & Gas Operator | Jun 2025 |
| 2644 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 2645 | Summit Essexville Inc | | Oil Operator | Dec 2014 |
| 2646 | Summit Exploration (California) LLC | | Oil & Gas Operator | Feb 2018 |
| 2647 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 2648 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 2649 | Summit Gas Resources Inc | Sheridan, WY 82801 | Gas Operator | Dec 2023 |
| 2650 | Summit Oil & Gas LLC | | Oil & Gas Operator | Jul 2025 |
| 2651 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Jun 2025 |
| 2652 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 2653 | Summit Petroleum Corp And Muskegon Development C | | Oil Operator | Dec 2006 |
| 2654 | Summit Petroleum Corp Of MT Pleasant | | Oil & Gas Operator | Dec 2007 |
| 2655 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2024 |
| 2656 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 2657 | Summit Reed City Inc | | Oil Operator | Dec 2014 |
| 2658 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | May 2025 |
| 2659 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Sep 2025 |
| 2660 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 2661 | Summitt Energy, LLC | Wichita, KS 67218 | Oil Operator | Mar 2025 |
| 2662 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 2663 | Sumner Energy Inc | | Oil & Gas Operator | Jul 2025 |
| 2664 | Sumpf-Williams | | Gas Operator | Dec 1980 |
| 2665 | Sumrall Sharon | Midland, TX 79705-8238 | Oil & Gas Operator | Apr 2022 |
| 2666 | Sun Coulee, LLC | Martinsdale, MT 59053 | Oil & Gas Operator | Jun 2025 |
| 2667 | Sun Explor & Production Co | Oklahoma City, OK 73126 | Gas Operator | Oct 1984 |
| 2668 | Sun Exploration Co, Inc | | Oil Operator | Dec 2010 |
| 2669 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | Sep 2025 |
| 2670 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 2671 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
| 2672 | Sun Oil Company | Dallas, TX 75373 | Oil & Gas Operator | Dec 2021 |
| 2673 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 2674 | Sun River Operating, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2025 |
| 2675 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 2676 | Sun Ventures | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 2677 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | Sep 2025 |
| 2678 | Sunardo Energy, Inc. | Castle Rock, CO 80104 | Oil Operator | Jan 1997 |
| 2679 | Sunbelt Oil Investments Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 1993 |
| 2680 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 2681 | Sunburst Explora | | Oil Operator | May 1990 |
| 2682 | Sunburst Exploration, Inc. | | Oil & Gas Operator | Jul 2000 |
| 2683 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Jun 2025 |
| 2684 | Sunbury-Trenton Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1988 |
| 2685 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 2686 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 2687 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 2688 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | Sep 2025 |
| 2689 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 2690 | Suncor Energy Natural Gas America Inc | Greenwood VIllage, CO 80111 | Gas Operator | Feb 2010 |
| 2691 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Sep 2025 |
| 2692 | Sundance Energy Corporation | | Oil & Gas Operator | Jan 2025 |
| 2693 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
| 2694 | Sundance Energy Oklahoma LLC Dba Seo LLC | Denver, CO 80202-3620 | Oil & Gas Operator | Nov 2021 |
| 2695 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 2696 | Sundance Oil Exploration Co | | Oil Operator | Mar 1986 |
| 2697 | Sundance Oil, Inc. | Norfolk, NE 68702 | Oil Operator | Aug 1998 |
| 2698 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 2699 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 2700 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Sep 2025 |