| 27501 | Sledge Olen | Duncan, OK 73533 | Oil Operator | Nov 2024 |
| 27502 | Sledge, H. G., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2016 |
| 27503 | Sleeth And Brooks Oil Co. | | Oil Operator | Jul 1989 |
| 27504 | Slick Inc. | MC Gregor, TX 76657 | Oil Operator | Apr 2025 |
| 27505 | Slick Production Inc | Tulsa, OK 74132-1718 | Oil & Gas Operator | Apr 2020 |
| 27506 | Slick Production, LLC | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 27507 | Slik-Dril P & A Inc | | Oil & Gas Operator | Sep 1989 |
| 27508 | Slik-Dril, Inc | | Oil & Gas Operator | Nov 1998 |
| 27509 | Slim Hole Inc | Farmington, NM 87401-7725 | Oil & Gas Operator | May 2013 |
| 27510 | Slingshot Oil & Gas | Houston, TX 77019 | Oil Operator | Apr 2025 |
| 27511 | Slinkard William & Roberta | Pawhuska, OK 74056 | Oil Operator | Jan 2025 |
| 27512 | Sliverville Oil Co LLC | Bradford, PA 16701-2770 | Oil & Gas Operator | Dec 2024 |
| 27513 | SLMW Energy Comp | | Oil Operator | Jan 1989 |
| 27514 | Slo Oil, LLC | El Dorado, KS 67042 | Oil Operator | Nov 2024 |
| 27515 | Sloan Oil Corporation | Humble, TX 77347 | Oil & Gas Operator | Mar 2015 |
| 27516 | Sloan Operations | | Oil Operator | Oct 2024 |
| 27517 | Sloan Petroleum Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 27518 | Sloan Petroleum Service Inc | Guthrie, OK 73044 | Oil & Gas Operator | Feb 2025 |
| 27519 | Sloan Production Co | | Oil Operator | Jan 2013 |
| 27520 | Slohcin, Inc. | Shelby, MT 59474 | Oil Operator | Feb 2025 |
| 27521 | Slone Energy, LLC | Oil Springs, KY 41238 | Oil & Gas Operator | Dec 2023 |
| 27522 | Slone VIctor | Barnsdall, OK 74002 | Oil Operator | Apr 2024 |
| 27523 | Slow Poke Production-George L. Dobson Dba | Cut Bank, MT 59427 | Gas Operator | Dec 2024 |
| 27524 | Slow Stroke Productions LLC | | Oil Operator | Feb 2025 |
| 27525 | SLS Operating LLC | Seminole, OK 74868-5876 | Oil & Gas Operator | Jan 2025 |
| 27526 | SLT Dakota Operating, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Apr 2025 |
| 27527 | SLT Production LLC | Sheffield, PA 16347-0547 | Oil & Gas Operator | Dec 2024 |
| 27528 | SM Energy | Denver, CO 80203-4361 | Gas Operator | Feb 2015 |
| 27529 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Apr 2025 |
| 27530 | SM Oil & Gas Inc | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2025 |
| 27531 | SM Operating Company LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 27532 | SM&O LLC | | Oil & Gas Operator | Dec 2024 |
| 27533 | Smackco, LTD. | | Oil & Gas Operator | Oct 2002 |
| 27534 | Smackover Drilling Company Inc | Shreveport, LA 71104 | Oil & Gas Operator | Sep 2024 |
| 27535 | Smackover Producing Co | | Oil & Gas Operator | Sep 2024 |
| 27536 | Smackover Shell LTD. Partnership | Houston, TX 77001 | Gas Operator | Apr 2000 |
| 27537 | Smail Denny Lee | Harvey, LA 70058 | Oil & Gas Operator | Dec 2024 |
| 27538 | Smail, James R. | Big Prairie, OH 44611 | Oil & Gas Operator | Dec 1998 |
| 27539 | Smal Energy Corp | Tyler, TX 75710 | Oil & Gas Operator | Oct 1995 |
| 27540 | Small, Louis E. | Angola, NY 14006 | Gas Operator | Dec 2023 |
| 27541 | Small, R.P. Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 27542 | Smalley, Bill | Albany, TX 76430 | Oil & Gas Operator | Jul 2001 |
| 27543 | Smart H D Etal | | Oil Operator | Jan 2006 |
| 27544 | Smart Jr T J | Ryan, OK 73565 | Oil Operator | Sep 1994 |
| 27545 | Smart Service & Equipment LLC | Muskogee, OK 74401-5262 | Oil Operator | Aug 2013 |
| 27546 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 27547 | Sme Well SVC Inc | Herman, PA 16039-0156 | Oil & Gas Operator | Dec 2024 |
| 27548 | Smiley Drilling Co | Oklahoma City, OK 73156-0773 | Oil & Gas Operator | Apr 1999 |
| 27549 | Smilodon Oil Company | | Oil Operator | Dec 2024 |
| 27550 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 27551 | Smith & Smith Petroleum Corp | | Oil & Gas Operator | Jan 2025 |
| 27552 | Smith & Spragins | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1995 |
| 27553 | Smith Al | Duncan, OK 73534-0037 | Oil Operator | Dec 1998 |
| 27554 | Smith Alfred Dba A-S Oil | Walters, OK 73572 | Oil Operator | Dec 2024 |
| 27555 | Smith B R Jr Disposal Co | Erick, OK 73645 | Oil & Gas Operator | Jun 2021 |
| 27556 | Smith Bart Oil & Gas Expl Inc | Council Hill, OK 74428-9603 | Oil & Gas Operator | Apr 2015 |
| 27557 | Smith Bob W | Ardmore, OK 73403-5214 | Oil & Gas Operator | Sep 2014 |
| 27558 | Smith Bradley D & Paul C | Pawhuska, OK 74056 | Oil Operator | Dec 2024 |
| 27559 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 27560 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 27561 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 27562 | Smith C/Dba Sandy Supply | North FT Myers, FL 33903 | Oil & Gas Operator | Dec 1988 |
| 27563 | Smith Cattle Inc | | Gas Operator | Dec 1994 |
| 27564 | Smith Cheryl A | Copan, OK 74022 | Oil Operator | Jul 2024 |
| 27565 | Smith Claude W | Henryetta, OK 74437-7553 | Oil Operator | May 2008 |
| 27566 | Smith Conley P Operating Co | Eglewood, CO 80112-3640 | Oil & Gas Operator | Jun 2000 |
| 27567 | Smith Connie M & Sheryle | Chelsea, OK 74016-1959 | Oil Operator | Feb 2017 |
| 27568 | Smith Doug | Tulsa, OK 74107 | Oil & Gas Operator | Feb 2016 |
| 27569 | Smith Edward F | Avant, OK 74001-0024 | Oil & Gas Operator | Nov 2014 |
| 27570 | Smith Energy 1986a Partnership | Alvin, TX 77511 | Oil & Gas Operator | Feb 2010 |
| 27571 | Smith Energy Company LLC | Purcell, OK 73080-4772 | Oil & Gas Operator | May 2015 |
| 27572 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
| 27573 | Smith Energy Limited Partnership 1988 | | Oil & Gas Operator | May 2012 |
| 27574 | Smith Energy LLC | | Oil & Gas Operator | Feb 2025 |
| 27575 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | Apr 2025 |
| 27576 | Smith Family LTD Partnership | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2004 |
| 27577 | Smith Harmon K | Wewoka, OK 74884 | Oil & Gas Operator | Jan 2013 |
| 27578 | Smith J S Production | Seminole, OK 74868 | Oil & Gas Operator | Jan 2025 |
| 27579 | Smith Jack Boyd | Elkhart, IN 46515-1968 | Oil & Gas Operator | Oct 2011 |
| 27580 | Smith Joyce | Okmulgee, OK 74447-6074 | Oil Operator | Nov 2024 |
| 27581 | Smith Kevin | Thermopolis, WY 82443 | Oil Operator | Sep 2024 |
| 27582 | Smith Land Surveying, Inc. Dba SLS Land & Energy Development | | Gas Operator | Dec 2021 |
| 27583 | Smith Management Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1992 |
| 27584 | Smith Manus L MFG Inc | Oklahoma City, OK 73147 | Oil & Gas Operator | Nov 1998 |
| 27585 | Smith Max Dean | Wewoka, OK 74884 | Oil & Gas Operator | Dec 2024 |
| 27586 | Smith Mike D | Stillwater, OK 74074 | Oil & Gas Operator | Apr 2015 |
| 27587 | Smith Oil & Gas Co., Inc. | Wichita Falls, TX 76310 | Oil Operator | Dec 2010 |
| 27588 | Smith Oil & Gas LLC | Livermore, CO 80536 | Gas Operator | Dec 2024 |
| 27589 | Smith Oil Compan | | Oil Operator | Sep 1994 |
| 27590 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Dec 2024 |
| 27591 | Smith Oil Operations | | Oil & Gas Operator | Dec 2024 |
| 27592 | Smith Oil Properties Inc | | Oil & Gas Operator | Nov 2022 |
| 27593 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Feb 2005 |
| 27594 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 27595 | Smith Operating-Germany Oil | | Oil & Gas Operator | Dec 1995 |
| 27596 | Smith Patrica\Judith Miller | Collinsville, OK 74021-6307 | Oil Operator | Jun 2010 |
| 27597 | Smith Petroleum Company | Spring, TX 77389 | Oil & Gas Operator | Apr 2025 |
| 27598 | Smith Petroleum LLC | Barnsdall, OK 74002-0134 | Oil Operator | Jan 2025 |
| 27599 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Apr 2025 |
| 27600 | Smith Production Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |