| 2501 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Sep 2025 |
| 2502 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 2503 | Strategic Well Holdings, Inc. | | Oil & Gas Operator | Dec 2020 |
| 2504 | Strategy Operating, LLC | Midland, TX 79710 | Gas Operator | Sep 2025 |
| 2505 | Stratex Oil & Gas Holdings, Inc. | Watertown, CT 06795 | Oil Operator | Jun 2015 |
| 2506 | Stratex Oil And Gas, Inc. | Watertown, CT 06795 | Oil & Gas Operator | Jun 2016 |
| 2507 | Stratford Well Service Inc | Pond Creek, OK 73766-0310 | Oil Operator | Nov 2003 |
| 2508 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 2509 | Strawn DRLG. Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2005 |
| 2510 | Strawn Energy Services, LLC | Lubbock, TX 79404 | Oil Operator | Sep 2025 |
| 2511 | Strawn Operating Co., L.L.C. | El Paso, TX 79912 | Oil Operator | Sep 2025 |
| 2512 | Strawn Partners Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 2513 | Strawn Petroleum Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2025 |
| 2514 | Stray Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2008 |
| 2515 | Stray Oil Company, LLC | Burkburnett, TX 76354 | Oil Operator | Nov 2017 |
| 2516 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 2517 | Streamline Energy, LLC | Yates Center, KS 66783 | Oil & Gas Operator | Dec 2019 |
| 2518 | Streamline Oil And Gas Inc | Lindsey, OK 73052 | Oil & Gas Operator | Jun 2025 |
| 2519 | Strebor Oil Co. | Dallas, TX 75225 | Oil & Gas Operator | Jun 1993 |
| 2520 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 2521 | Streetman Inc | | Oil Operator | Oct 1987 |
| 2522 | Stricker Resources Inc | Morris, OK 74445 | Oil & Gas Operator | May 2025 |
| 2523 | Strickland, H.W. | Henrietta, TX 76365 | Oil & Gas Operator | Dec 1999 |
| 2524 | Strickler Emory | New Concord, OH 43762 | Oil & Gas Operator | Dec 2013 |
| 2525 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | Jun 2025 |
| 2526 | Stright Roger | Amesville, OH 45711 | Oil & Gas Operator | Dec 2016 |
| 2527 | Strike Axe Oil And Gas Corporation | | Oil & Gas Operator | Mar 2021 |
| 2528 | Strike Energy Corp | Blackwell, OK 74631 | Oil & Gas Operator | Jul 2023 |
| 2529 | Strike Energy LLC | Burneyville, OK 73430 | Oil Operator | May 2025 |
| 2530 | Strike Too Oil | Albany, TX 76430 | Oil Operator | Sep 2025 |
| 2531 | Striker Management Co LLC | Shawnee, OK 74801 | Oil & Gas Operator | May 2025 |
| 2532 | Striker Petroleum Corporation | Englewood, CO 80111 | Oil & Gas Operator | Dec 1999 |
| 2533 | Striker Petroleum Operations LLC | Frisco, TX 75034-2127 | Oil & Gas Operator | Nov 2014 |
| 2534 | Striker Robert E | Rogers, OH 44455 | Oil & Gas Operator | Dec 2024 |
| 2535 | Stringer E M | | Oil Operator | May 1996 |
| 2536 | Stringer Oil & Gas Co., Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 1996 |
| 2537 | Striper Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2002 |
| 2538 | Stripper Oil Com | | Oil Operator | Nov 1996 |
| 2539 | Stripper Oil Company Inc | | Oil Operator | Apr 2025 |
| 2540 | Strippit, Inc. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 2541 | Stroke Of Luck Energy & Exploration LLC | Cassoday, KS 66842 | Oil Operator | Sep 2021 |
| 2542 | Stromquist C Dal | | Oil & Gas Operator | Aug 1991 |
| 2543 | Stromquist C Dale | Liberal, KS 67901-2428 | Oil & Gas Operator | Jun 2006 |
| 2544 | Stromquist, C. Dale, A General Partnership | Liberal, KS 67901 | Oil & Gas Operator | Aug 2010 |
| 2545 | Strong Rock Operating Company, LLC | | Oil & Gas Operator | Jul 2025 |
| 2546 | Stronghold Energy II Oper, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2022 |
| 2547 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 2548 | Stroube Family Partnership #2 | Corsicana, TX 75151 | Oil Operator | Sep 2025 |
| 2549 | Stroud Energy, LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2006 |
| 2550 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 2551 | Stroud Operating LLC | | Oil & Gas Operator | Dec 2012 |
| 2552 | Stroud Petroleum Company | Oklahoma City, OK 73156-0156 | Oil Operator | Jun 2014 |
| 2553 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Sep 2025 |
| 2554 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 2555 | Struck Rock Oil And Gas LLC | Geary, OK 73040 | Oil & Gas Operator | May 2025 |
| 2556 | Struthers Oil & Gas Corp | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2013 |
| 2557 | Struthoff Energy, L.L.C. | San Antonio, TX 78216 | Oil Operator | Sep 2025 |
| 2558 | Stryker Energy Corp. | Mesquite, TX 75180 | Oil & Gas Operator | Sep 2025 |
| 2559 | Stryker Energy LLC | Mayfield VIllag, OH 44143 | Oil & Gas Operator | Dec 2018 |
| 2560 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Sep 2025 |
| 2561 | Stuart & Barrett | San Angelo, TX 76904 | Gas Operator | Jan 2008 |
| 2562 | Stuart Oil | | Oil Operator | Jan 2025 |
| 2563 | Stuart Oil & Gas | Longview, TX 75606 | Oil & Gas Operator | Sep 2025 |
| 2564 | Stuart Operating, LLC | Ozona, TX 76943 | Oil & Gas Operator | Sep 2025 |
| 2565 | Stubblefield Energy Company | Abilene, TX 79604 | Oil & Gas Operator | Sep 2025 |
| 2566 | Stubbs & Fleming, A General Partnership | Wichita, KS 67202 | Oil Operator | Jul 2005 |
| 2567 | Stubbs Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Aug 1998 |
| 2568 | Stubbs, J. W. | Suwanee, GA 30024 | Oil & Gas Operator | Mar 2008 |
| 2569 | Stuber, VIrgil | Eureka, KS 67045 | Oil Operator | Dec 2019 |
| 2570 | Stucky Oil Compa | | Oil Operator | Mar 1988 |
| 2571 | Stucky Oil Company | Sedgwick, KS 67135 | Gas Operator | Aug 1999 |
| 2572 | Stucky, Edward P. | Sabetha, KS 66534 | Oil Operator | May 1992 |
| 2573 | Stucky, Kenneth R. Oil & Gas Operations | Burrton, KS 67020 | Oil & Gas Operator | Aug 2002 |
| 2574 | Studer Oil Co. | Pratt, KS 67124 | Oil Operator | Oct 2019 |
| 2575 | Studer Oil Compa | | Oil & Gas Operator | Feb 1993 |
| 2576 | Studley Resources Corporation | Humble, TX 77347 | Oil & Gas Operator | Dec 1996 |
| 2577 | Studley, Richard | Gowanda, NY 14070 | Gas Operator | Dec 2024 |
| 2578 | Studley, Robert SR. & Robert Jr. | Gowanda, NY 14070 | Gas Operator | Dec 2024 |
| 2579 | Stull Crude Co, LLC | | Oil Operator | Apr 2025 |
| 2580 | Stull Oil LLC | Natoma, KS 67651 | Oil Operator | Apr 2025 |
| 2581 | Stults, Joe K. | Archer City, TX 76351 | Oil & Gas Operator | Mar 2007 |
| 2582 | Stumpff Paul | Bartlesville, OK 74006-3426 | Oil & Gas Operator | Mar 2015 |
| 2583 | Sturgeon Point Development Co | | Gas Operator | Jun 2019 |
| 2584 | Sturman Jay R | Mounds, OK 74047 | Oil & Gas Operator | Apr 2024 |
| 2585 | Stuteville Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Aug 2004 |
| 2586 | Stuteville, Jack | Olney, TX 76374 | Oil Operator | Sep 2025 |
| 2587 | Stydahar Oil & Gas Co. | | Oil & Gas Operator | Dec 2021 |
| 2588 | STZ Petroleum Inc. | Houston, TX 77268 | Oil & Gas Operator | Dec 1997 |
| 2589 | Sub Surface Operations | Brownwood, TX 76804 | Oil & Gas Operator | Sep 2025 |
| 2590 | Sublette Feeders LLC | Sublette, KS 67877 | Gas Operator | Apr 2025 |
| 2591 | Suborp Energy, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Sep 2000 |
| 2592 | Subsea Operating Co. | Albany, TX 76430 | Oil & Gas Operator | Sep 2025 |
| 2593 | Subsurface Energy Corp. | Coleman, TX 76834 | Oil & Gas Operator | Sep 2025 |
| 2594 | Subsurface Energy, Inc. | | Oil & Gas Operator | Oct 2015 |
| 2595 | Subsurface Exploration | Coleman, TX 76834 | Oil & Gas Operator | Apr 2006 |
| 2596 | Subsurface Minerals Group LLC | Tulsa, OK 74119-1635 | Oil & Gas Operator | Jan 2013 |
| 2597 | Subsurface Production, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Sep 2025 |
| 2598 | Subsurface Resources Inc | Logan, UT 84321 | Oil & Gas Operator | Aug 1990 |
| 2599 | Subterranean Energy, LLC | Tyler, TX 75705 | Oil & Gas Operator | Sep 2025 |
| 2600 | Suburban Propane Expl Co, Inc. | | Oil & Gas Operator | Jun 1983 |