| 27501 | Sheffler Industries | Phoenix, AZ 85013 | Oil Operator | Aug 1999 |
| 27502 | Shefts & Shefts, Inc. | Luling, TX 78648 | Oil & Gas Operator | Feb 2026 |
| 27503 | Shelburne Oil Company | Oklahoma City, OK 73116-7639 | Gas Operator | Feb 2020 |
| 27504 | Shelby Boswell Operator, LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 27505 | Shelby H. Loe, SR. Oil Co. | | Oil Operator | Jul 1989 |
| 27506 | Shelby Operating Company | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 27507 | Shelby Operating, Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 1997 |
| 27508 | Shelby Production Co. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2009 |
| 27509 | Shelby Production, Inc. | Kilgore, TX 75663 | Gas Operator | Feb 2026 |
| 27510 | Shelby Resources LLC | Denver, CO 80207 | Oil & Gas Operator | Sep 2025 |
| 27511 | Shelby, Michael H. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 27512 | Shelco | Maysville, MO 64469 | Oil & Gas Operator | May 2021 |
| 27513 | Sheldon Brothers Agency | Salina, KS 67402 | Oil Operator | May 1998 |
| 27514 | Sheldon Resources, L.P. | Bryan, TX 77805 | Oil & Gas Operator | Feb 2026 |
| 27515 | Shelex Drilling Inc | Lexington, KY 40523 | Oil & Gas Operator | Dec 2025 |
| 27516 | Shelf Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 27517 | Shell Calif. Prod. Inc. | | Oil Operator | Dec 1980 |
| 27518 | Shell Frontier Oil & Gas Inc. | Houston, TX 77001 | Oil & Gas Operator | Feb 1997 |
| 27519 | Shell Land & Energy Co. | Houston, TX 77001 | Oil & Gas Operator | Feb 1997 |
| 27520 | Shell Offshore Inc. | New Orleans, LA 70161 | Oil & Gas Operator | Jan 2008 |
| 27521 | Shell Oil Co. | Houston, TX 77001 | Oil & Gas Operator | Jun 1985 |
| 27522 | Shell Oil Co. -Nola | | Oil & Gas Operator | Jun 2000 |
| 27523 | Shell Rocky Mountain Production LLC | Pinedale, WY 82941 | Oil & Gas Operator | Dec 2008 |
| 27524 | Shell Western E&P | Houston, TX 77001 | Oil & Gas Operator | Feb 2026 |
| 27525 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 27526 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 27527 | Shelley, Randall D. | Wichita, KS 67202 | Oil Operator | Sep 2025 |
| 27528 | Shelley, Richard W | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2015 |
| 27529 | Shelly Energy Inc | Berwyn, PA 19312 | Oil & Gas Operator | Dec 2025 |
| 27530 | Shelly Oil & Gas Inc | Avonmore, PA 15618-9748 | Gas Operator | Dec 2025 |
| 27531 | Shelter Petroleum,Inc | | Oil & Gas Operator | Jun 2014 |
| 27532 | Shelton Alec & Glenda | Kiefer, OK 74041 | Oil & Gas Operator | Aug 2025 |
| 27533 | Shelton Brothers | Okmulgee, OK 74447-6110 | Oil & Gas Operator | Apr 2020 |
| 27534 | Shelton Dempsey L | Glenpool, OK 74033 | Oil & Gas Operator | Dec 2018 |
| 27535 | Shelton Dempsey W | Tulsa, OK 74119-4036 | Oil & Gas Operator | Mar 2015 |
| 27536 | Shelton Oil Company LLC | Collinsville, OK 74021-5619 | Oil Operator | Nov 2025 |
| 27537 | Shelton Oil Resources LLC | Tulsa, OK 74107-4874 | Oil & Gas Operator | Nov 2025 |
| 27538 | Shelton Resources Inc | Tulsa, OK 74119-4036 | Oil & Gas Operator | Feb 2008 |
| 27539 | Shelton, Charles M. | Baytown, TX 77521 | Oil & Gas Operator | Aug 2003 |
| 27540 | Shelton, Robert | Lacygne, KS 66040 | Oil Operator | Sep 2025 |
| 27541 | Shenandoah Energy Inc | Denver, CO 80265-1050 | Oil & Gas Operator | Dec 2014 |
| 27542 | Shenandoah Oil Corporation | | Oil & Gas Operator | Jun 1979 |
| 27543 | Shenandoah Oil, Inc. (I) | Midland, TX 79710 | Oil & Gas Operator | Apr 1996 |
| 27544 | Shenandoah Petroleum Corporation | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 27545 | Shenandoah Resources LLC | Houston, TX 77086 | Oil & Gas Operator | Apr 2020 |
| 27546 | Sheneeda Energy, LLC | O Brien, TX 79539 | Oil Operator | Jun 2025 |
| 27547 | Shepard James | Beggs, OK 74421 | Oil & Gas Operator | Feb 2024 |
| 27548 | Shepler & Thomas | | Oil & Gas Operator | Oct 1992 |
| 27549 | Shepler & Thomas, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Sep 2025 |
| 27550 | Shepperd, William M. | Houston, TX 77279 | Oil & Gas Operator | Sep 2012 |
| 27551 | Sher-Lon Corpora | | Oil Operator | Apr 1994 |
| 27552 | Sheri-Di Product | | Oil Operator | Apr 1994 |
| 27553 | Sheridan Energy,Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2000 |
| 27554 | Sheridan Production Co III, LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 27555 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2025 |
| 27556 | Sherley, O. C. | Megargel, TX 76370 | Oil & Gas Operator | Aug 2003 |
| 27557 | Sherman F Wagenseller | Denver, CO 80210 | Gas Operator | Apr 2016 |
| 27558 | Sherman Havens | | Oil & Gas Operator | Nov 2025 |
| 27559 | Sherman Larry Oil Company | Chandler, OK 74834 | Oil & Gas Operator | Mar 2015 |
| 27560 | Sherman Michael | Canton, OH 44735 | Oil & Gas Operator | Dec 2007 |
| 27561 | Sherman Oil & Gas Co Inc | Chandler, OK 74834-0571 | Oil & Gas Operator | Apr 2020 |
| 27562 | Sherman Oil & Gas, L.L.C. | Chandler, OK 74834 | Oil & Gas Operator | Dec 2025 |
| 27563 | Sherman Oil Company LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2025 |
| 27564 | Sherman, L. B. | Early, TX 76803 | Oil & Gas Operator | Jun 1998 |
| 27565 | Sherred Homer G And Fleeharty Willie W | | Oil Operator | Jun 1991 |
| 27566 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 27567 | Sherry'S Oil Company | Terral, OK 73569 | Oil Operator | Oct 2000 |
| 27568 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 27569 | Shewey, C. F., Agent | | Oil & Gas Operator | Dec 2008 |
| 27570 | Shideler Enterprises Inc | Drumright, OK 74030 | Oil & Gas Operator | Feb 2019 |
| 27571 | Shideler, Dean | | Oil & Gas Operator | Dec 1997 |
| 27572 | Shidler Well Service | Vinita, OK 74301-5468 | Oil Operator | Dec 2000 |
| 27573 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Feb 2026 |
| 27574 | Shield Energy Resources, LLC | | Oil Operator | Dec 2024 |
| 27575 | Shield Operating Co. | Georgetown, TX 78627 | Oil & Gas Operator | Aug 2003 |
| 27576 | Shield Petroleum | College Sta, TX 77845 | Oil & Gas Operator | Feb 2026 |
| 27577 | Shield Resources Inc | | Oil & Gas Operator | Nov 1987 |
| 27578 | Shields Cooper | Bonita Springs, FL 34135-3421 | Oil & Gas Operator | Jan 2011 |
| 27579 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Nov 2025 |
| 27580 | Shields Oil Prod | | Oil & Gas Operator | Aug 1995 |
| 27581 | Shields Oil Producers Inc. | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 27582 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 27583 | Shields VIrginia | Kellyville, OK 74039 | Oil & Gas Operator | Dec 2025 |
| 27584 | Shields Well Service Corp | Stroud, OK 74079-3410 | Oil & Gas Operator | Dec 2017 |
| 27585 | Shields, Timothy R. & Donnalee F. | Randolph, NY 14772 | Gas Operator | Dec 2024 |
| 27586 | Shifflett Operating Company | Snyder, TX 79550 | Oil & Gas Operator | Feb 2026 |
| 27587 | Shiloh Creek Resources, Inc. | | Gas Operator | Nov 2024 |
| 27588 | Shiloh Oil Company LLC | Williston, FL 32696 | Oil & Gas Operator | Feb 2026 |
| 27589 | Shiner Exploration, LLC | Houston, TX 77091 | Oil & Gas Operator | Feb 2026 |
| 27590 | Shines'S Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2009 |
| 27591 | Shinnery Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 27592 | Shiny One Operating Company, LLC | Vernal, UT 84078 | Oil & Gas Operator | Dec 2025 |
| 27593 | Shipley Energy Corporation | | Oil & Gas Operator | May 1991 |
| 27594 | Shipman James E Dba Lazy J Oil Co | Hallett, OK 74034 | Oil Operator | Oct 2025 |
| 27595 | Shirk, Benjamin H. III & Arlene M. | Penn Yan, NY 14527 | Gas Operator | Dec 2024 |
| 27596 | Shirley M. Lechler | | Oil & Gas Operator | Dec 2001 |
| 27597 | Shirley, B. J. | Lawn, TX 79530 | Oil & Gas Operator | Mar 2008 |
| 27598 | Shivers, Linward, Operator | Shreveport, LA 71161 | Oil & Gas Operator | Sep 1997 |
| 27599 | SHL Operating | Lubbock, TX 79416 | Oil & Gas Operator | Feb 2026 |
| 27600 | Sho-Bar Energy I | | Oil & Gas Operator | Jan 1991 |