| 128401 | ULT 8 | Uintah County, UT | Oil & Gas Property | Feb 2026 |
| 128402 | ULT 9 | Uintah County, UT | Oil & Gas Property | Feb 2026 |
| 128403 | ULTIMATE WARRIOR | Lycoming County, PA | Gas Property | Feb 2026 |
| 128404 | ULTRA U A STATE | Chaves County, NM | Oil & Gas Property | Feb 2026 |
| 128405 | ULURU 35 FEDERAL | Eddy County, NM | Oil & Gas Property | Feb 2026 |
| 128406 | ULVESTAD | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 128407 | ULVESTAD-BIRKHEAD E20 | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 128408 | UMA UNIT | Hill County, TX | Oil & Gas Property | Feb 2026 |
| 128409 | UMANSKY | Alfalfa County, OK | Oil & Gas Property | Jan 2026 |
| 128410 | UMBACH | Grady County, OK | Oil & Gas Property | Jan 2026 |
| 128411 | UMBARGER | Neosho County, KS | Oil & Gas Property | Dec 2025 |
| 128412 | UMBARGER | Neosho County, KS | Gas Property | Dec 2025 |
| 128413 | UMBARGER | Wilson County, KS | Oil & Gas Property | Oct 2025 |
| 128414 | UMBARGER | Wilson County, KS | Oil & Gas Property | Dec 2025 |
| 128415 | UMBEHR | Riley County, KS | Oil Property | Dec 2025 |
| 128416 | UMBER 11-28-16 | Woods County, OK | Oil & Gas Property | Feb 2026 |
| 128417 | UMBERSON | Montague County, TX | Oil & Gas Property | Feb 2026 |
| 128418 | UMBERT PETRARCA | Indiana County, PA | Gas Property | Dec 2025 |
| 128419 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 128420 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | Feb 2026 |
| 128421 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | Feb 2026 |
| 128422 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | Feb 2026 |
| 128423 | UMMEL | Ness County, KS | Oil Property | Aug 2015 |
| 128424 | UMMEL | Ness County, KS | Oil Property | Nov 2025 |
| 128425 | UMMEL | Ness County, KS | Oil Property | Jul 2025 |
| 128426 | UMMEL | Ness County, KS | Oil Property | Dec 2025 |
| 128427 | UMMEL | Ness County, KS | Oil Property | Dec 2025 |
| 128428 | UMSTEAD | Stafford County, KS | Oil Property | Nov 2025 |
| 128429 | UMSTED | Ouachita County, AR | Oil & Gas Property | Dec 2025 |
| 128430 | UMSTED | Union County, AR | Oil Property | Nov 2025 |
| 128431 | UNA FIFE | Creek County, OK | Oil Property | Jan 2026 |
| 128432 | UNA HYRAL | Johnson County, TX | Gas Property | Nov 2025 |
| 128433 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | Feb 2026 |
| 128434 | UNBRIDLED 5-8-10-7 | Canadian County, OK | Oil & Gas Property | Jan 2026 |
| 128435 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | Feb 2026 |
| 128436 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | Feb 2026 |
| 128437 | UNCLE CHES 21 16 FEDERAL COM | Lea County, NM | Oil & Gas Property | Feb 2026 |
| 128438 | UNCLE CHES 21 16 FEDERAL COM 125H | Lea County, NM | Oil & Gas Property | Feb 2026 |
| 128439 | UNCLE RICHARD STATE COM | Lea County, NM | Oil & Gas Property | Feb 2026 |
| 128440 | UNCLE RICO | Custer County, OK | Oil & Gas Property | Jan 2026 |
| 128441 | UNCLE SAM | Lea County, NM | Oil & Gas Property | Feb 2026 |
| 128442 | UNCLE SAM 13 | Lea County, NM | Oil & Gas Property | May 2022 |
| 128443 | UNCOMPAGHRE STATE UNIT | Reeves County, TX | Oil & Gas Property | Feb 2026 |
| 128444 | UNCOMPAHGRE | Grady County, OK | Oil & Gas Property | Feb 2026 |
| 128445 | UNCOMPAHGRE STATE 14-36-164-101 | Divide County, ND | Oil & Gas Property | Feb 2026 |
| 128446 | UNDAUNTED BSD STATE COM | Lea County, NM | Oil & Gas Property | Feb 2026 |
| 128447 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | Feb 2026 |
| 128448 | UNDERDAHL | Pondera County, MT | Gas Property | Jul 2017 |
| 128449 | UNDERHILL | Weld County, CO | Oil & Gas Property | Jan 2026 |
| 128450 | UNDERHILL | Marshall County, OK | Oil Property | Aug 2024 |
| 128451 | UNDERHILL COAL | Clearfield County, PA | Gas Property | Dec 2023 |
| 128452 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | Feb 2026 |
| 128453 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128454 | UNDERWOOD | Tyler County, WV | Oil & Gas Property | Dec 2021 |
| 128455 | UNDERWOOD | Kearny County, KS | Gas Property | Dec 2025 |
| 128456 | UNDERWOOD | Caddo Parish, LA | Oil Property | Jan 2025 |
| 128457 | UNDERWOOD | McLean County, KY | Oil Property | Aug 2017 |
| 128458 | UNDERWOOD | Milam County, TX | Oil & Gas Property | Dec 2025 |
| 128459 | UNDERWOOD | Red River County, TX | Oil & Gas Property | Feb 2026 |
| 128460 | UNDERWOOD | Greenwood County, KS | Oil Property | Dec 2025 |
| 128461 | UNDERWOOD | Beaver County, OK | Oil & Gas Property | Oct 2018 |
| 128462 | UNDERWOOD | Barton County, KS | Oil Property | Dec 2025 |
| 128463 | UNDERWOOD | Ward County, TX | Oil & Gas Property | Jan 2026 |
| 128464 | UNDERWOOD | Beaver County, OK | Gas Property | Jan 2024 |
| 128465 | UNDERWOOD | Chautauqua County, KS | Oil Property | Nov 2025 |
| 128466 | UNDERWOOD | Campbell County, WY | Oil & Gas Property | May 2005 |
| 128467 | UNDERWOOD | Stark County, OH | Oil & Gas Property | Dec 2025 |
| 128468 | UNDERWOOD | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 128469 | UNDERWOOD | Howard County, TX | Oil & Gas Property | Jan 2026 |
| 128470 | UNDERWOOD | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 128471 | UNDERWOOD | Winkler County, TX | Oil & Gas Property | Feb 2026 |
| 128472 | UNDERWOOD | Doddridge County, WV | Oil & Gas Property | Oct 2021 |
| 128473 | UNDERWOOD | Faulkner County, AR | Gas Property | Jul 2024 |
| 128474 | UNDERWOOD | Haskell County, OK | Gas Property | Jan 2026 |
| 128475 | UNDERWOOD | Perry County, OH | Oil & Gas Property | Dec 2025 |
| 128476 | UNDERWOOD 33-7-15 | La Plata County, CO | Gas Property | Jan 2026 |
| 128477 | UNDERWOOD A | Seward County, KS | Oil & Gas Property | Dec 2025 |
| 128478 | UNDERWOOD ESTATE 1 | Lavaca County, TX | Oil & Gas Property | Jan 2026 |
| 128479 | UNDERWOOD, CHARLES G | Doddridge County, WV | Gas Property | Dec 2021 |
| 128480 | UNDERWOOD, RALPH | Tyler County, WV | Gas Property | Dec 2021 |
| 128481 | UNDERWOOD, RAYMOND | Tyler County, WV | Oil & Gas Property | Dec 2021 |
| 128482 | UNDERWOOD, RICHARD M | Wetzel County, WV | Oil & Gas Property | Dec 2021 |
| 128483 | UNDERWOOD-BREEN | Denton County, TX | Oil & Gas Property | Feb 2026 |
| 128484 | UNDERWOOD-JOHNSON 1 | Hutchinson County, TX | Oil & Gas Property | Feb 2026 |
| 128485 | UNDHJEM 1 | Burke County, ND | Oil & Gas Property | Feb 2026 |
| 128486 | UNDINE | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128487 | UNEY 24-1 | Stanton County, KS | Oil & Gas Property | May 2005 |
| 128488 | UNFORGIVEN 34 113-114 | Ward County, TX | Oil & Gas Property | Feb 2026 |
| 128489 | UNGER | Armstrong County, PA | Gas Property | Dec 2025 |
| 128490 | UNGER | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 128491 | UNGER | Decatur County, KS | Oil Property | Aug 1988 |
| 128492 | UNGER | Yuma County, CO | Gas Property | Jan 2026 |
| 128493 | UNGER | Decatur County, KS | Oil Property | Mar 1995 |
| 128494 | UNGER | Yuma County, CO | Gas Property | Jan 2026 |
| 128495 | UNGER | Tuscarawas County, OH | Oil & Gas Property | Dec 2024 |
| 128496 | UNGLES | Haskell County, KS | Oil & Gas Property | Dec 2025 |
| 128497 | UNGLES | Haskell County, KS | Oil & Gas Property | Dec 2025 |
| 128498 | UNGLES | Haskell County, KS | Gas Property | Dec 2025 |
| 128499 | UNGUREAN | Coshocton County, OH | Oil & Gas Property | Dec 2024 |
| 128500 | UNI-UPR | Weld County, CO | Oil & Gas Property | Jun 2020 |