| 601 | STEINHOEFEL | Campbell County, WY | Gas Property | Nov 2007 |
| 602 | STEINLE RANCH | Converse County, WY | Oil & Gas Property | Nov 2025 |
| 603 | STENGEL STATE | Sweetwater County, WY | Oil & Gas Property | Nov 2025 |
| 604 | STEP SCALE | Hot Springs County, WY | Oil & Gas Property | Nov 2025 |
| 605 | STEPANEK | Johnson County, WY | Gas Property | Nov 2025 |
| 606 | STEPSCALE 49-T-P | Hot Springs County, WY | Oil & Gas Property | Nov 2025 |
| 607 | STEVENS | Campbell County, WY | Gas Property | Apr 2012 |
| 608 | STEVENSON | Crook County, WY | Oil & Gas Property | Oct 1994 |
| 609 | STEVENSON 0409 | Campbell County, WY | Oil & Gas Property | Dec 2025 |
| 610 | STEWART | Crook County, WY | Oil Property | Mar 2013 |
| 611 | STEWART | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 612 | STEWART POINT | Sublette County, WY | Oil & Gas Property | Nov 2025 |
| 613 | STIG FED 4271-32 | Campbell County, WY | Oil & Gas Property | Nov 2025 |
| 614 | STIMSON 3568-0211-1TH | Converse County, WY | Oil & Gas Property | Nov 2025 |
| 615 | STINGRAY 1-11/12H | Laramie County, WY | Oil & Gas Property | Dec 2025 |
| 616 | STIP SCALE 23 | Hot Springs County, WY | Oil & Gas Property | Nov 2025 |
| 617 | STIRLING | Weston County, WY | Oil & Gas Property | Dec 2025 |
| 618 | STOCK | Campbell County, WY | Gas Property | Jan 2008 |
| 619 | STOCKMANS B | Campbell County, WY | Oil & Gas Property | Jan 1994 |
| 620 | STOCKYARDS | Crook County, WY | Oil Property | Nov 2025 |
| 621 | STODDARD | Weston County, WY | Oil & Gas Property | Dec 2025 |
| 622 | STODDARD | Campbell County, WY | Oil & Gas Property | Nov 2025 |
| 623 | STODDARD 40-71 36 A | Converse County, WY | Oil & Gas Property | Nov 2025 |
| 624 | STONE CABIN | Natrona County, WY | Oil & Gas Property | Dec 2025 |
| 625 | STONE GATE | Campbell County, WY | Gas Property | Nov 2013 |
| 626 | STONEGATE | Campbell County, WY | Gas Property | Nov 2012 |
| 627 | STONEPILE | Campbell County, WY | Gas Property | Mar 2012 |
| 628 | STONES THROW | Campbell County, WY | Gas Property | Jun 2015 |
| 629 | STORE DRAW CS | Campbell County, WY | Gas Property | Aug 2018 |
| 630 | STORM SHELTER | Sweetwater County, WY | Oil & Gas Property | Dec 2025 |
| 631 | STORMY FED 4371-27 | Campbell County, WY | Oil & Gas Property | Nov 2025 |
| 632 | STOVALL | Natrona County, WY | Oil & Gas Property | Dec 2025 |
| 633 | STRAGG DRAW | Campbell County, WY | Oil Property | Dec 2025 |
| 634 | STRANAHAN | Johnson County, WY | Gas Property | Nov 2025 |
| 635 | STRANGE | Sweetwater County, WY | Oil & Gas Property | Dec 2025 |
| 636 | STREETER | Johnson County, WY | Gas Property | Feb 2016 |
| 637 | STREETER | Johnson County, WY | Oil & Gas Property | Dec 1993 |
| 638 | STREETER FED | Johnson County, WY | Gas Property | Dec 2015 |
| 639 | STRICKLING | Weston County, WY | Oil & Gas Property | Aug 2024 |
| 640 | STRIKE | Sweetwater County, WY | Oil & Gas Property | Nov 2025 |
| 641 | STRIPE CS FED | Campbell County, WY | Gas Property | Nov 2013 |
| 642 | STUART | Campbell County, WY | Gas Property | Aug 2011 |
| 643 | STUART | Campbell County, WY | Oil & Gas Property | Dec 2025 |
| 644 | STUART | Campbell County, WY | Oil & Gas Property | Dec 2025 |
| 645 | STUART FEDERAL | Campbell County, WY | Gas Property | Jun 2012 |
| 646 | STUART FEDERAL | Campbell County, WY | Gas Property | Jul 2011 |
| 647 | STUART FEDERAL | Campbell County, WY | Gas Property | Jan 2010 |
| 648 | STUD HORESE BUTTE | Sublette County, WY | Oil & Gas Property | Dec 2025 |
| 649 | STUD HORSE | Sublette County, WY | Oil & Gas Property | Dec 2025 |
| 650 | STUD HORSE BUTTE | Sublette County, WY | Oil & Gas Property | Dec 2025 |
| 651 | STUDHORSE BUTTE 62-34 | Sublette County, WY | Oil & Gas Property | Dec 2025 |
| 652 | STUDHORSE BUTTE RAIN 311-04-500H | Sublette County, WY | Oil & Gas Property | Dec 2025 |
| 653 | SUCHAN | Campbell County, WY | Oil & Gas Property | Nov 2025 |
| 654 | SUEDKAMP | Campbell County, WY | Gas Property | May 2012 |
| 655 | SUGAR LOAF | Sublette County, WY | Oil & Gas Property | Nov 2021 |
| 656 | SUGARLOAF | Sweetwater County, WY | Oil & Gas Property | Oct 2025 |
| 657 | SUKEY CS STATE | Johnson County, WY | Gas Property | Apr 2014 |
| 658 | SULTANA 23-62 23-14 | Goshen County, WY | Oil & Gas Property | Dec 2025 |
| 659 | SUMMERFIELD | Campbell County, WY | Oil & Gas Property | Dec 2022 |
| 660 | SUN DOG UNIT | Carbon County, WY | Gas Property | Aug 2025 |
| 661 | SUN DOG UNIT 1691 | Carbon County, WY | Gas Property | Dec 2016 |
| 662 | SUN RANCH | Natrona County, WY | Oil & Gas Property | Sep 2025 |
| 663 | SUNDQUIST 9-34-71 USA A | Converse County, WY | Oil & Gas Property | Dec 2025 |
| 664 | SUNDQUIST FLATS | Converse County, WY | Oil & Gas Property | Sep 1981 |
| 665 | SUNDQUIST FLATS UNIT 34-72 1 | Converse County, WY | Oil & Gas Property | Dec 2025 |
| 666 | SUNLIGHT 41-20 1H | Laramie County, WY | Oil & Gas Property | Dec 2025 |
| 667 | SUNRISE CS FED | Campbell County, WY | Gas Property | Sep 2014 |
| 668 | SUNRISE FED | Campbell County, WY | Oil & Gas Property | Dec 2025 |
| 669 | SUPER BEE | Laramie County, WY | Oil & Gas Property | Dec 2025 |
| 670 | SUPERHORNET | Campbell County, WY | Oil Property | Apr 2010 |
| 671 | SUPERIOR | Campbell County, WY | Oil Property | Jan 1990 |
| 672 | SURANYI | Sheridan County, WY | Gas Property | May 2012 |
| 673 | SUSSEX | Johnson County, WY | Oil & Gas Property | Nov 2024 |
| 674 | SUSSEX UNIT | Johnson County, WY | Oil & Gas Property | Apr 1986 |
| 675 | SUSSEX WEST | Johnson County, WY | Oil & Gas Property | Dec 2025 |
| 676 | SUSSEX WEST UNIT | Johnson County, WY | Oil Property | Oct 1986 |
| 677 | SVALINA | Campbell County, WY | Oil & Gas Property | Apr 2010 |
| 678 | SVALINA FED 14-17 | Campbell County, WY | Oil Property | Dec 2025 |
| 679 | SWAN SOUTH | Sweetwater County, WY | Oil & Gas Property | Dec 2025 |
| 680 | SWAN W-42289 24-14 | Lincoln County, WY | Oil & Gas Property | Dec 2025 |
| 681 | SWANSON | Campbell County, WY | Gas Property | Jan 2007 |
| 682 | SWANSONG | Campbell County, WY | Gas Property | Nov 2013 |
| 683 | SWINGHOLM FEDERAL | Campbell County, WY | Gas Property | Dec 2011 |
| 684 | SWINYER 1 | Sheridan County, WY | Gas Property | Mar 2014 |
| 685 | SYMONS | Sheridan County, WY | Gas Property | Mar 2014 |