| 2501 | Strand Energy, Inc. (I) | Houston, TX 77002 | Oil & Gas Operator | Sep 1996 |
| 2502 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 2503 | Strand, Carlton Oil | Stamford, TX 79553 | Oil & Gas Operator | May 1997 |
| 2504 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 2505 | Strange, Joyce Marital Trust | Holliday, TX 76366 | Oil Operator | May 2008 |
| 2506 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 2507 | Strata Energy Re | | Oil Operator | Nov 1987 |
| 2508 | Strata Energy, Inc. | | Oil & Gas Operator | Sep 1983 |
| 2509 | Strata Exploration, Inc. | Fairfield, IL 62837 | Oil & Gas Operator | Sep 2025 |
| 2510 | Strata Oil Corporation | Carmi, IL 62821 | Oil & Gas Operator | Jan 2002 |
| 2511 | Strata Oil Incor | | Oil Operator | Mar 1994 |
| 2512 | Strata Operating, Inc. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Dec 2025 |
| 2513 | Strata Petroleum Co. | Midland, TX 79701 | Oil & Gas Operator | May 1997 |
| 2514 | Strata Petroleum Inc | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2019 |
| 2515 | Strata Production Co | Roswell, NM 882021030 | Oil & Gas Operator | Nov 2025 |
| 2516 | Strata Star Petroleum Corp. | Uvalde, TX 78801 | Oil Operator | Dec 2025 |
| 2517 | Strata Tech Services, Inc | Rowlett, TX 75088 | Oil Operator | Dec 2019 |
| 2518 | Strata-X Inc. | | Oil & Gas Operator | Oct 2025 |
| 2519 | Strataform, Inc. | | Gas Operator | Jun 2002 |
| 2520 | Stratagas, Inc. | Rowlett, TX 75088 | Oil & Gas Operator | May 2006 |
| 2521 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Sep 2025 |
| 2522 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Dec 2025 |
| 2523 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 2524 | Strategic Well Holdings, Inc. | | Oil & Gas Operator | Dec 2020 |
| 2525 | Strategy Operating, LLC | Midland, TX 79710 | Gas Operator | Dec 2025 |
| 2526 | Stratex Oil & Gas Holdings, Inc. | Watertown, CT 06795 | Oil Operator | Jun 2015 |
| 2527 | Stratex Oil And Gas, Inc. | Watertown, CT 06795 | Oil & Gas Operator | Jun 2016 |
| 2528 | Stratford Well Service Inc | Pond Creek, OK 73766-0310 | Oil Operator | Nov 2003 |
| 2529 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 2530 | Strawn DRLG. Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2005 |
| 2531 | Strawn Energy Services, LLC | Lubbock, TX 79404 | Oil Operator | Dec 2025 |
| 2532 | Strawn Operating Co., L.L.C. | El Paso, TX 79912 | Oil Operator | Dec 2025 |
| 2533 | Strawn Partners Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 2534 | Strawn Petroleum Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 2535 | Stray Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2008 |
| 2536 | Stray Oil Company, LLC | Burkburnett, TX 76354 | Oil Operator | Nov 2017 |
| 2537 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 2538 | Streamline Energy, LLC | Yates Center, KS 66783 | Oil & Gas Operator | Dec 2019 |
| 2539 | Streamline Oil And Gas Inc | Lindsay, OK 73052 | Oil & Gas Operator | Nov 2025 |
| 2540 | Strebor Oil Co. | Dallas, TX 75225 | Oil & Gas Operator | Jun 1993 |
| 2541 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 2542 | Streetman Inc | | Oil Operator | Oct 1987 |
| 2543 | Stricker Resources Inc | Morris, OK 74445 | Oil & Gas Operator | Oct 2025 |
| 2544 | Strickland, H.W. | Henrietta, TX 76365 | Oil & Gas Operator | Dec 1999 |
| 2545 | Strickler Emory | New Concord, OH 43762 | Oil & Gas Operator | Dec 2013 |
| 2546 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | Nov 2025 |
| 2547 | Stright Roger | Amesville, OH 45711 | Oil & Gas Operator | Dec 2016 |
| 2548 | Strihan Gas Co | Du Bois, PA 15801-2340 | Gas Operator | Dec 2021 |
| 2549 | Strike Axe Oil And Gas Corporation | | Oil & Gas Operator | Mar 2021 |
| 2550 | Strike Energy Corporation | Blackwell, OK 74631 | Oil & Gas Operator | Jul 2023 |
| 2551 | Strike Energy LLC | Burneyville, OK 73430 | Oil Operator | Oct 2025 |
| 2552 | Strike Too Oil | Albany, TX 76430 | Oil Operator | Dec 2025 |
| 2553 | Striker Management Co LLC | Shawnee, OK 74801 | Oil & Gas Operator | Oct 2025 |
| 2554 | Striker Petroleum Corporation | Englewood, CO 80111 | Oil & Gas Operator | Dec 1999 |
| 2555 | Striker Petroleum Operations LLC | Frisco, TX 75034-2127 | Oil & Gas Operator | Nov 2014 |
| 2556 | Striker Robert E | Rogers, OH 44455 | Oil & Gas Operator | Dec 2024 |
| 2557 | Stringer E M | | Oil Operator | May 1996 |
| 2558 | Stringer Oil & Gas Co., Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 1996 |
| 2559 | Striper Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2002 |
| 2560 | Stripper Oil Com | | Oil Operator | Nov 1996 |
| 2561 | Stripper Oil Company Inc | | Oil Operator | Sep 2025 |
| 2562 | Strippit, Inc. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 2563 | Stroke Of Luck Energy & Exploration LLC | Cassoday, KS 66842 | Oil Operator | Sep 2021 |
| 2564 | Stromquist C Dal | | Oil & Gas Operator | Aug 1991 |
| 2565 | Stromquist C Dale | Liberal, KS 67901-2428 | Oil & Gas Operator | Jun 2006 |
| 2566 | Stromquist, C. Dale, A General Partnership | Liberal, KS 67901 | Oil & Gas Operator | Aug 2010 |
| 2567 | Strong Rock Operating Company, LLC | | Oil & Gas Operator | Nov 2025 |
| 2568 | Stronghold Energy II Oper, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2022 |
| 2569 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 2570 | Stroube Family Partnership #2 | Corsicana, TX 75151 | Oil Operator | Dec 2025 |
| 2571 | Stroud Energy, LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2006 |
| 2572 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 2573 | Stroud Operating LLC | | Oil & Gas Operator | Dec 2012 |
| 2574 | Stroud Petroleum Company | Oklahoma City, OK 73156-0156 | Oil Operator | Jun 2014 |
| 2575 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Dec 2025 |
| 2576 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 2577 | Struck Rock Oil And Gas LLC | Geary, OK 73040 | Oil & Gas Operator | Oct 2025 |
| 2578 | Struthers Oil & Gas Corp | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2013 |
| 2579 | Struthoff Energy, L.L.C. | San Antonio, TX 78216 | Oil Operator | Dec 2025 |
| 2580 | Stryker Energy Corp. | Mesquite, TX 75180 | Oil & Gas Operator | Dec 2025 |
| 2581 | Stryker Energy LLC | Mayfield VIllag, OH 44143 | Oil & Gas Operator | Dec 2018 |
| 2582 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Dec 2025 |
| 2583 | Stuart & Barrett | San Angelo, TX 76904 | Gas Operator | Jan 2008 |
| 2584 | Stuart Oil | | Oil Operator | Jan 2025 |
| 2585 | Stuart Oil & Gas | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 2586 | Stuart Operating, LLC | Ozona, TX 76943 | Oil & Gas Operator | Dec 2025 |
| 2587 | Stubblefield Energy Company | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 2588 | Stubbs & Fleming, A General Partnership | Wichita, KS 67202 | Oil Operator | Jul 2005 |
| 2589 | Stubbs Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Aug 1998 |
| 2590 | Stubbs, J. W. | Suwanee, GA 30024 | Oil & Gas Operator | Mar 2008 |
| 2591 | Stuber, VIrgil | Eureka, KS 67045 | Oil Operator | Dec 2019 |
| 2592 | Stucky Oil Compa | | Oil Operator | Mar 1988 |
| 2593 | Stucky Oil Company | Sedgwick, KS 67135 | Gas Operator | Aug 1999 |
| 2594 | Stucky, Edward P. | Sabetha, KS 66534 | Oil Operator | May 1992 |
| 2595 | Stucky, Kenneth R. Oil & Gas Operations | Burrton, KS 67020 | Oil & Gas Operator | Aug 2002 |
| 2596 | Studer Oil Co. | Pratt, KS 67124 | Oil Operator | Oct 2019 |
| 2597 | Studer Oil Compa | | Oil & Gas Operator | Feb 1993 |
| 2598 | Studley Resources Corporation | Humble, TX 77347 | Oil & Gas Operator | Dec 1996 |
| 2599 | Studley, Richard | Gowanda, NY 14070 | Gas Operator | Dec 2024 |
| 2600 | Studley, Robert SR. & Robert Jr. | Gowanda, NY 14070 | Gas Operator | Dec 2024 |