| 2501 | Stuteville, Jack | Olney, TX 76374 | Oil Operator | Apr 2024 |
| 2502 | Stydahar Oil & Gas Co. | | Oil & Gas Operator | Dec 2021 |
| 2503 | STZ Petroleum Inc. | Houston, TX 77268 | Oil & Gas Operator | Dec 1997 |
| 2504 | Sub Surface Operations | Brownwood, TX 76804 | Oil & Gas Operator | Apr 2024 |
| 2505 | Sublette Feeders LLC | Sublette, KS 67877 | Gas Operator | Dec 2023 |
| 2506 | Suborp Energy, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Sep 2000 |
| 2507 | Subsea Operating Co. | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 2508 | Subsurface Energy Corp. | Coleman, TX 76834 | Oil & Gas Operator | Apr 2024 |
| 2509 | Subsurface Exploration | Coleman, TX 76834 | Oil & Gas Operator | Apr 2006 |
| 2510 | Subsurface Minerals Group LLC | Tulsa, OK 74119-1635 | Oil & Gas Operator | Jan 2013 |
| 2511 | Subsurface Production, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Apr 2024 |
| 2512 | Subsurface Resources Inc | Logan, UT 84321 | Oil & Gas Operator | Aug 1990 |
| 2513 | Subterranean Energy, LLC | Tyler, TX 75705 | Oil & Gas Operator | Apr 2024 |
| 2514 | Suburban Propane Expl Co, Inc. | | Oil & Gas Operator | Jun 1983 |
| 2515 | Suburban Propane Gas Corp. | | Oil & Gas Operator | Sep 1980 |
| 2516 | Success Oil Company, Inc. | Beverly Hills, CA 90211 | Oil & Gas Operator | Apr 2024 |
| 2517 | Sudberry Mark E Dba Gushing Oil Co | Trophy Club, TX 76262-5531 | Oil Operator | Jan 2020 |
| 2518 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Apr 2024 |
| 2519 | Sue-Ann Production Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 2520 | Suemaur Expl. & Prod., LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2024 |
| 2521 | Suemaur Exploration, Inc. | Corpus Chrsti, TX 78470 | Oil & Gas Operator | Mar 2008 |
| 2522 | Suerte Oil & Gas LLC | Caney, KS 67333 | Oil Operator | Dec 2023 |
| 2523 | Suerte Oil Compa | | Oil & Gas Operator | Oct 1995 |
| 2524 | Suerte Oil Company | Howard, KS 67349 | Oil & Gas Operator | Jan 2017 |
| 2525 | Sugar Bowl Gas Corp. | | Oil Operator | Dec 1983 |
| 2526 | Sugar Bowl Industrial Gas Corp | | Oil Operator | Dec 1983 |
| 2527 | Sugar Creek Environmental, LLC | | Oil Operator | Dec 2023 |
| 2528 | Sugar Creek Producing Company | | Oil & Gas Operator | Dec 2010 |
| 2529 | Sugar Creek Producing Company, LLC | | Oil & Gas Operator | Jan 2024 |
| 2530 | Sugar Enterprises, LLC | Tyler, TX 75713 | Oil & Gas Operator | Apr 2024 |
| 2531 | Sugar Oil Company | | Oil & Gas Operator | Feb 2011 |
| 2532 | Sugar Rock Incorporated | | Oil & Gas Operator | Dec 2021 |
| 2533 | Suits & Jeans, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 2534 | Sujen Enterprise | | Oil Operator | Sep 1989 |
| 2535 | Sukay Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 2536 | Sullivan & Clark | Youngsville, PA 16371-0194 | Oil & Gas Operator | Dec 1998 |
| 2537 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 2538 | Sullivan - Wells | Amarillo, TX 79101 | Gas Operator | Apr 2024 |
| 2539 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2024 |
| 2540 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 2541 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 2542 | Sullivan Well Service | | Oil Operator | Mar 2010 |
| 2543 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 2544 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 2545 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 2546 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Apr 2024 |
| 2547 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 2548 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 2549 | Summer Sun Gas, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Dec 2014 |
| 2550 | Summers Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2002 |
| 2551 | Summers, Esther B. | Midland, MI 48640 | Gas Operator | Dec 2022 |
| 2552 | Summit Appalachia Operating Company, LLC | | Gas Operator | Dec 2021 |
| 2553 | Summit Discovery Res II LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2019 |
| 2554 | Summit Energy Company | | Oil & Gas Operator | Mar 2009 |
| 2555 | Summit Energy LLC | | Oil & Gas Operator | Dec 2023 |
| 2556 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 2557 | Summit Essexville Inc | | Oil Operator | Dec 2014 |
| 2558 | Summit Exploration (California) LLC | | Oil & Gas Operator | Feb 2018 |
| 2559 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 2560 | Summit Gas LLC | | Oil & Gas Operator | Oct 2011 |
| 2561 | Summit Gas Resources Inc | Sheridan, WY 82801 | Gas Operator | Dec 2023 |
| 2562 | Summit Oil & Gas LLC | | Oil & Gas Operator | Feb 2024 |
| 2563 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Feb 2024 |
| 2564 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 2565 | Summit Petroleum Corp And Muskegon Development C | | Oil Operator | Dec 2006 |
| 2566 | Summit Petroleum Corp Of MT Pleasant | | Oil & Gas Operator | Dec 2007 |
| 2567 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2023 |
| 2568 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2024 |
| 2569 | Summit Reed City Inc | | Oil Operator | Dec 2014 |
| 2570 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2024 |
| 2571 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Apr 2024 |
| 2572 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 2573 | Summitt Energy, LLC | Wichita, KS 67218 | Oil Operator | Dec 2023 |
| 2574 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 2575 | Sumner Energy Inc | | Oil Operator | Dec 2016 |
| 2576 | Sumpf-Williams | | Gas Operator | Dec 1980 |
| 2577 | Sumrall Sharon | Midland, TX 79705-8238 | Oil & Gas Operator | Apr 2022 |
| 2578 | Sun Coulee, LLC | Martinsdale, MT 59053 | Oil Operator | Nov 2023 |
| 2579 | Sun Exploration Co, Inc | | Oil Operator | Dec 2010 |
| 2580 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | Apr 2024 |
| 2581 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 2582 | Sun Mountain Oil & Gas | | Oil & Gas Operator | Dec 2020 |
| 2583 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 2584 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 2585 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2023 |
| 2586 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
| 2587 | Sun Ventures | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 2588 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | Apr 2024 |
| 2589 | Sunardo Energy, Inc. | Castle Rock, CO 80104 | Oil Operator | Jan 1997 |
| 2590 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 2591 | Sunburst Explora | | Oil Operator | May 1990 |
| 2592 | Sunburst Exploration, Inc. | | Oil & Gas Operator | Jul 2000 |
| 2593 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Feb 2024 |
| 2594 | Sunchase Exploration, Inc. | | Oil & Gas Operator | Oct 1997 |
| 2595 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 2596 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 2597 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | Apr 2024 |
| 2598 | Suncoast Technical SVCS., Inc. | | Oil & Gas Operator | Dec 2011 |
| 2599 | Suncor Energy Natural Gas America Inc | Greenwood VIllage, CO 80111 | Gas Operator | Feb 2010 |
| 2600 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Apr 2024 |