| 130501 | ULRICH | Russell County, KS | Oil Property | Aug 1990 |
| 130502 | ULRICH | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 130503 | ULRICH | Greenwood County, KS | Oil Property | Feb 1995 |
| 130504 | ULRICH | Dewitt County, TX | Oil & Gas Property | May 2025 |
| 130505 | ULRICH | Monroe County, OH | Oil & Gas Property | Mar 2025 |
| 130506 | ULRICH | Weld County, CO | Oil & Gas Property | May 2025 |
| 130507 | ULRICH | Weld County, CO | Oil & Gas Property | May 2025 |
| 130508 | ULRICH A - WILLIAMS A SA 1 1H | Dewitt County, TX | Oil & Gas Property | May 2025 |
| 130509 | ULRICH PC I 17 | Weld County, CO | Oil & Gas Property | Feb 2018 |
| 130510 | ULS 4 | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130511 | ULS 4 | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130512 | ULS 5 | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130513 | ULS 5-9 UNIT | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130514 | ULS 6-3 | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130515 | ULS A | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130516 | ULS B | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130517 | ULS CDU | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130518 | ULS CDU 4-1 | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130519 | ULSH | Edwards County, KS | Oil & Gas Property | Apr 2025 |
| 130520 | ULSH 'A' | Grant County, KS | Gas Property | Apr 2025 |
| 130521 | ULT 1 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130522 | ULT 3 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130523 | ULT 4 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130524 | ULT 5 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130525 | ULT 6 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130526 | ULT 7 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130527 | ULT 8 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130528 | ULT 9 | Uintah County, UT | Oil & Gas Property | May 2025 |
| 130529 | ULTIMATE WARRIOR | Lycoming County, PA | Gas Property | May 2025 |
| 130530 | ULTRA U A STATE | Chaves County, NM | Oil & Gas Property | May 2025 |
| 130531 | ULURU 35 FEDERAL | Eddy County, NM | Oil & Gas Property | May 2025 |
| 130532 | ULVESTAD | Midland County, TX | Oil & Gas Property | May 2025 |
| 130533 | ULVESTAD-BIRKHEAD E20 | Midland County, TX | Oil & Gas Property | May 2025 |
| 130534 | UMA UNIT | Hill County, TX | Oil & Gas Property | May 2025 |
| 130535 | UMANSKY | Alfalfa County, OK | Oil & Gas Property | Apr 2025 |
| 130536 | UMBACH | Grady County, OK | Oil & Gas Property | Apr 2025 |
| 130537 | UMBACH | Grady County, OK | Oil & Gas Property | Apr 2025 |
| 130538 | UMBARGER | Neosho County, KS | Oil & Gas Property | Apr 2025 |
| 130539 | UMBARGER | Neosho County, KS | Gas Property | Apr 2025 |
| 130540 | UMBARGER | Wilson County, KS | Oil & Gas Property | Apr 2025 |
| 130541 | UMBARGER | Wilson County, KS | Oil & Gas Property | Apr 2025 |
| 130542 | UMBEHR | Riley County, KS | Oil Property | Mar 2025 |
| 130543 | UMBER 11-28-16 | Woods County, OK | Oil & Gas Property | Apr 2025 |
| 130544 | UMBERSON | Montague County, TX | Oil & Gas Property | May 2025 |
| 130545 | UMBERT PETRARCA | Indiana County, PA | Gas Property | Dec 2024 |
| 130546 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 130547 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | May 2025 |
| 130548 | UMCC 'A' | Meade County, KS | Oil Property | May 2024 |
| 130549 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | May 2025 |
| 130550 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | May 2025 |
| 130551 | UMMEL | Ness County, KS | Oil Property | Aug 2015 |
| 130552 | UMMEL | Ness County, KS | Oil Property | Mar 2025 |
| 130553 | UMMEL | Ness County, KS | Oil Property | Apr 2025 |
| 130554 | UMMEL | Ness County, KS | Oil Property | Mar 2025 |
| 130555 | UMMEL | Ness County, KS | Oil Property | Mar 2025 |
| 130556 | UMPHRESS, C.F. ET AL | Howard County, TX | Oil & Gas Property | Mar 2019 |
| 130557 | UMSTEAD | Stafford County, KS | Oil Property | Nov 2024 |
| 130558 | UMSTED | Ouachita County, AR | Oil & Gas Property | Dec 2024 |
| 130559 | UMSTED | Union County, AR | Oil Property | Jan 2025 |
| 130560 | UNA FIFE | Creek County, OK | Oil Property | Jun 2024 |
| 130561 | UNA HYRAL | Johnson County, TX | Gas Property | May 2025 |
| 130562 | UNA PALMER 14 H | De Soto Parish, LA | Gas Property | Dec 2024 |
| 130563 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | May 2025 |
| 130564 | UNBRIDLED 5-8-10-7 | Canadian County, OK | Oil & Gas Property | Apr 2025 |
| 130565 | UNCLE BILL | Kingfisher County, OK | Oil & Gas Property | Apr 2025 |
| 130566 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | May 2025 |
| 130567 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | May 2025 |
| 130568 | UNCLE CHES 21 16 FEDERAL COM | Lea County, NM | Oil & Gas Property | May 2025 |
| 130569 | UNCLE CHES 21 16 FEDERAL COM 125H | Lea County, NM | Oil & Gas Property | May 2025 |
| 130570 | UNCLE JERRY DAVIS | Liberty County, TX | Oil Property | May 2025 |
| 130571 | UNCLE RICHARD STATE COM | Lea County, NM | Oil & Gas Property | May 2025 |
| 130572 | UNCLE SAM | Lea County, NM | Oil & Gas Property | May 2025 |
| 130573 | UNCLE SAM 13 | Lea County, NM | Oil & Gas Property | May 2022 |
| 130574 | UNCOMPAGHRE STATE UNIT | Reeves County, TX | Oil & Gas Property | May 2025 |
| 130575 | UNDAUNTED BSD STATE COM | Lea County, NM | Oil & Gas Property | May 2025 |
| 130576 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | May 2025 |
| 130577 | UNDERDAHL | Pondera County, MT | Gas Property | May 2018 |
| 130578 | UNDERHILL | Weld County, CO | Oil & Gas Property | May 2025 |
| 130579 | UNDERHILL | Marshall County, OK | Oil Property | Aug 2024 |
| 130580 | UNDERHILL COAL | Clearfield County, PA | Gas Property | Dec 2023 |
| 130581 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | May 2025 |
| 130582 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | May 2025 |
| 130583 | UNDERWOOD | Tyler County, WV | Oil & Gas Property | Dec 2021 |
| 130584 | UNDERWOOD | Kearny County, KS | Gas Property | Apr 2025 |
| 130585 | UNDERWOOD | Caddo Parish, LA | Oil Property | Jan 2025 |
| 130586 | UNDERWOOD | McLean County, KY | Oil Property | Aug 2017 |
| 130587 | UNDERWOOD | Milam County, TX | Oil & Gas Property | May 2025 |
| 130588 | UNDERWOOD | Red River County, TX | Oil & Gas Property | May 2025 |
| 130589 | UNDERWOOD | Crawford County, KS | Oil Property | Aug 2020 |
| 130590 | UNDERWOOD | Greenwood County, KS | Oil Property | Apr 2025 |
| 130591 | UNDERWOOD | Beaver County, OK | Oil & Gas Property | Oct 2018 |
| 130592 | UNDERWOOD | Barton County, KS | Oil Property | Mar 2025 |
| 130593 | UNDERWOOD | Ward County, TX | Oil & Gas Property | Apr 2025 |
| 130594 | UNDERWOOD | Beaver County, OK | Gas Property | Jan 2024 |
| 130595 | UNDERWOOD | Chautauqua County, KS | Oil Property | Apr 2025 |
| 130596 | UNDERWOOD | Campbell County, WY | Oil & Gas Property | Aug 2005 |
| 130597 | UNDERWOOD | Stark County, OH | Oil & Gas Property | Dec 2024 |
| 130598 | UNDERWOOD | Coshocton County, OH | Oil & Gas Property | Dec 2023 |
| 130599 | UNDERWOOD | Howard County, TX | Oil & Gas Property | Apr 2025 |
| 130600 | UNDERWOOD | Doddridge County, WV | Oil & Gas Property | Dec 2021 |