| 128401 | ULANDS 48 | Reagan County, TX | Oil & Gas Property | Mar 2026 |
| 128402 | ULC-0 | Tuscaloosa County, AL | Gas Property | Mar 2026 |
| 128403 | ULC-TAURUS | Tuscaloosa County, AL | Gas Property | Mar 2026 |
| 128404 | ULC-TAURUS-9 | Tuscaloosa County, AL | Gas Property | Mar 2026 |
| 128405 | ULDRICH | Seminole County, OK | Oil & Gas Property | Jan 2021 |
| 128406 | ULIBARRI GAS COM | San Juan County, NM | Oil & Gas Property | Apr 2026 |
| 128407 | ULLIE EAGLE | Creek County, OK | Oil Property | Sep 2025 |
| 128408 | ULLMAN | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 128409 | ULLMAN | Gonzales County, TX | Oil & Gas Property | Mar 2026 |
| 128410 | ULLMAN | Washington County, OH | Oil & Gas Property | Dec 2025 |
| 128411 | ULLMAN | Washington County, OH | Oil & Gas Property | Dec 2025 |
| 128412 | ULLMAN H | Washington County, OH | Oil & Gas Property | Dec 2014 |
| 128413 | ULLMAN JACOB H | Noble County, OH | Oil & Gas Property | Dec 2025 |
| 128414 | ULLMANN | Noble County, OH | Oil Property | Dec 2023 |
| 128415 | ULLOM | Washington County, OH | Oil & Gas Property | Dec 2024 |
| 128416 | ULLOM | Texas County, OK | Oil & Gas Property | Mar 2026 |
| 128417 | ULLRICH | Beaver County, OK | Oil & Gas Property | Feb 2026 |
| 128418 | ULLRICH 'A' | Lee County, TX | Oil & Gas Property | Mar 2026 |
| 128419 | ULMER | Sedgwick County, KS | Oil Property | Aug 2021 |
| 128420 | ULMER 24-21H | Dunn County, ND | Oil & Gas Property | Apr 2026 |
| 128421 | ULRICH | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 128422 | ULRICH | Greenwood County, KS | Oil Property | Sep 2021 |
| 128423 | ULRICH | Russell County, KS | Oil Property | Aug 1990 |
| 128424 | ULRICH | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 128425 | ULRICH | Greenwood County, KS | Oil Property | Feb 1995 |
| 128426 | ULRICH | Dewitt County, TX | Oil & Gas Property | Mar 2026 |
| 128427 | ULRICH | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 128428 | ULRICH | Weld County, CO | Oil & Gas Property | Jun 2025 |
| 128429 | ULRICH | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 128430 | ULRICH A - WILLIAMS A SA 1 1H | Dewitt County, TX | Oil & Gas Property | Mar 2026 |
| 128431 | ULRICH PC I 17 | Weld County, CO | Oil & Gas Property | Feb 2018 |
| 128432 | ULS 4 | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128433 | ULS 4 | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128434 | ULS 5 | Andrews County, TX | Oil & Gas Property | Mar 2026 |
| 128435 | ULS 5-9 UNIT | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128436 | ULS 6-3 | Andrews County, TX | Oil & Gas Property | Mar 2026 |
| 128437 | ULS A | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128438 | ULS B | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128439 | ULS CDU | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128440 | ULS CDU 4-1 | Andrews County, TX | Oil & Gas Property | Feb 2026 |
| 128441 | ULSH | Edwards County, KS | Oil & Gas Property | Feb 2026 |
| 128442 | ULSH 'A' | Grant County, KS | Gas Property | Feb 2026 |
| 128443 | ULT 1 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128444 | ULT 3 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128445 | ULT 4 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128446 | ULT 5 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128447 | ULT 6 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128448 | ULT 7 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128449 | ULT 8 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128450 | ULT 9 | Uintah County, UT | Oil & Gas Property | Apr 2026 |
| 128451 | ULTIMATE WARRIOR | Lycoming County, PA | Gas Property | Mar 2026 |
| 128452 | ULTRA U A STATE | Chaves County, NM | Oil & Gas Property | Mar 2026 |
| 128453 | ULURU 35 FEDERAL | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 128454 | ULVESTAD | Midland County, TX | Oil & Gas Property | Mar 2026 |
| 128455 | ULVESTAD-BIRKHEAD E20 | Midland County, TX | Oil & Gas Property | Mar 2026 |
| 128456 | UMA UNIT | Hill County, TX | Oil & Gas Property | Mar 2026 |
| 128457 | UMANSKY | Alfalfa County, OK | Oil & Gas Property | Apr 2026 |
| 128458 | UMBACH | Grady County, OK | Oil & Gas Property | Mar 2026 |
| 128459 | UMBARGER | Neosho County, KS | Oil & Gas Property | Feb 2026 |
| 128460 | UMBARGER | Neosho County, KS | Gas Property | Feb 2026 |
| 128461 | UMBARGER | Wilson County, KS | Oil & Gas Property | Oct 2025 |
| 128462 | UMBARGER | Wilson County, KS | Oil & Gas Property | Feb 2026 |
| 128463 | UMBEHR | Riley County, KS | Oil Property | Feb 2026 |
| 128464 | UMBER 11-28-16 | Woods County, OK | Oil & Gas Property | Apr 2026 |
| 128465 | UMBERSON | Montague County, TX | Oil & Gas Property | Mar 2026 |
| 128466 | UMBERT PETRARCA | Indiana County, PA | Gas Property | Dec 2025 |
| 128467 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 128468 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | Mar 2026 |
| 128469 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | Mar 2026 |
| 128470 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | Mar 2026 |
| 128471 | UMMEL | Ness County, KS | Oil Property | Aug 2015 |
| 128472 | UMMEL | Ness County, KS | Oil Property | Jan 2026 |
| 128473 | UMMEL | Ness County, KS | Oil Property | Jul 2025 |
| 128474 | UMMEL | Ness County, KS | Oil Property | Feb 2026 |
| 128475 | UMMEL | Ness County, KS | Oil Property | Feb 2026 |
| 128476 | UMSTEAD | Stafford County, KS | Oil Property | Nov 2025 |
| 128477 | UMSTED | Ouachita County, AR | Oil & Gas Property | Mar 2026 |
| 128478 | UMSTED | Union County, AR | Oil Property | Mar 2026 |
| 128479 | UNA FIFE | Creek County, OK | Oil Property | Jan 2026 |
| 128480 | UNA HYRAL | Johnson County, TX | Gas Property | Nov 2025 |
| 128481 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | Mar 2026 |
| 128482 | UNBRIDLED 5-8-10-7 | Canadian County, OK | Oil & Gas Property | Mar 2026 |
| 128483 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | Mar 2026 |
| 128484 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | Feb 2026 |
| 128485 | UNCLE CHES 21 16 FEDERAL COM | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 128486 | UNCLE CHES 21 16 FEDERAL COM 125H | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 128487 | UNCLE RICHARD STATE COM | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 128488 | UNCLE RICO | Custer County, OK | Oil & Gas Property | Mar 2026 |
| 128489 | UNCLE SAM | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 128490 | UNCLE SAM 13 | Lea County, NM | Oil & Gas Property | May 2022 |
| 128491 | UNCOMPAGHRE STATE UNIT | Reeves County, TX | Oil & Gas Property | Mar 2026 |
| 128492 | UNCOMPAHGRE | Grady County, OK | Oil & Gas Property | Apr 2026 |
| 128493 | UNDAUNTED BSD STATE COM | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 128494 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | Mar 2026 |
| 128495 | UNDERDAHL | Pondera County, MT | Gas Property | Jul 2017 |
| 128496 | UNDERHILL | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 128497 | UNDERHILL | Marshall County, OK | Oil Property | Aug 2024 |
| 128498 | UNDERHILL COAL | Clearfield County, PA | Gas Property | Dec 2023 |
| 128499 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | Mar 2026 |
| 128500 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | Mar 2026 |