| 40401 | UL RATTLE | Ward County, TX | Oil & Gas Property | Nov 2021 |
| 40402 | UL REAGAN | Reagan County, TX | Oil & Gas Property | Sep 2024 |
| 40403 | UL ROY | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40404 | UL SITKA 12 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40405 | UL SPRINTER | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40406 | UL SPRUCE 1621-21 | Winkler County, TX | Oil & Gas Property | Sep 2024 |
| 40407 | UL STANOLIND 30-27 | Martin County, TX | Oil & Gas Property | Sep 2024 |
| 40408 | UL SUGARLOAF | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40409 | UL SUNSHINE MESA 2 | Winkler County, TX | Oil & Gas Property | Sep 2024 |
| 40410 | UL TAWNY UNIT 8-12 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40411 | UL THE MACHINE | Upton County, TX | Oil & Gas Property | Sep 2024 |
| 40412 | UL TILDEN 16-31-32 | Ward County, TX | Oil & Gas Property | Aug 2024 |
| 40413 | UL URAD 1609-21 | Winkler County, TX | Oil & Gas Property | Sep 2024 |
| 40414 | UL WAYLON | Upton County, TX | Oil & Gas Property | Sep 2024 |
| 40415 | UL WILLIE | Upton County, TX | Oil & Gas Property | Sep 2024 |
| 40416 | UL WILLOW 383633-16 | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40417 | UL YANKEE BOY 18-17 | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40418 | UL YELLOWTAIL | Winkler County, TX | Oil & Gas Property | Sep 2024 |
| 40419 | UL13 KEENE | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40420 | ULANDS 48 | Reagan County, TX | Oil & Gas Property | Oct 2024 |
| 40421 | ULLMAN | Gonzales County, TX | Oil & Gas Property | Sep 2024 |
| 40422 | ULLRICH 'A' | Lee County, TX | Oil & Gas Property | Sep 2024 |
| 40423 | ULRICH | Dewitt County, TX | Oil & Gas Property | Sep 2024 |
| 40424 | ULRICH A - WILLIAMS A SA 1 1H | Dewitt County, TX | Oil & Gas Property | Sep 2024 |
| 40425 | ULS 4 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40426 | ULS 4 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40427 | ULS 5 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40428 | ULS 5-9 UNIT | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40429 | ULS 6-3 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40430 | ULS A | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40431 | ULS B | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40432 | ULS CDU | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40433 | ULS CDU 4-1 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40434 | ULVESTAD | Midland County, TX | Oil & Gas Property | Sep 2024 |
| 40435 | ULVESTAD-BIRKHEAD E20 | Midland County, TX | Oil & Gas Property | Sep 2024 |
| 40436 | UMA UNIT | Hill County, TX | Oil & Gas Property | Sep 2024 |
| 40437 | UMBERSON | Montague County, TX | Oil & Gas Property | Sep 2024 |
| 40438 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 40439 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | Sep 2024 |
| 40440 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40441 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | Sep 2024 |
| 40442 | UMPHRESS,C. F. ET AL | Howard County, TX | Oil & Gas Property | Mar 2019 |
| 40443 | UNA HYRAL | Johnson County, TX | Gas Property | Sep 2024 |
| 40444 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | Sep 2024 |
| 40445 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | Sep 2024 |
| 40446 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | Sep 2024 |
| 40447 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | Sep 2024 |
| 40448 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | Sep 2024 |
| 40449 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40450 | UNDERWOOD | Milam County, TX | Oil & Gas Property | Sep 2024 |
| 40451 | UNDERWOOD | Red River County, TX | Oil & Gas Property | Sep 2024 |
| 40452 | UNDERWOOD | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40453 | UNDERWOOD | Howard County, TX | Oil & Gas Property | Sep 2024 |
| 40454 | UNDERWOOD | Winkler County, TX | Oil & Gas Property | Sep 2024 |
| 40455 | UNDERWOOD ESTATE 1 | Lavaca County, TX | Oil & Gas Property | Aug 2024 |
| 40456 | UNDERWOOD MARY E | Montague County, TX | Oil & Gas Property | Sep 2024 |
| 40457 | UNDERWOOD-BREEN | Denton County, TX | Oil & Gas Property | Sep 2024 |
| 40458 | UNDERWOOD-JOHNSON 1 | Hutchinson County, TX | Oil & Gas Property | Sep 2024 |
| 40459 | UNDINE | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40460 | UNFORGIVEN 34 113-114 | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40461 | UNICORN | Johnson County, TX | Gas Property | Sep 2024 |
| 40462 | UNICORN UNIT | Borden County, TX | Oil & Gas Property | Sep 2024 |
| 40463 | UNIMIN UNIT | Somervell County, TX | Oil & Gas Property | Sep 2024 |
| 40464 | UNION | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40465 | UNION CENT | Nueces County, TX | Oil & Gas Property | Aug 2023 |
| 40466 | UNION CENTRAL | Denton County, TX | Oil & Gas Property | Sep 2024 |
| 40467 | UNION CENTRAL LIFE INS | Nueces County, TX | Gas Property | Sep 2024 |
| 40468 | UNION CENTRAL-CONDEE WELCH (SA) 1H | Denton County, TX | Oil & Gas Property | Sep 2024 |
| 40469 | UNION HILL | Washington County, TX | Oil & Gas Property | Sep 2024 |
| 40470 | UNION PACIFIC | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40471 | UNION PACIFIC 7 | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40472 | UNION RANCH | Webb County, TX | Oil & Gas Property | Sep 2024 |
| 40473 | UNION VALLEY A | Dawson County, TX | Oil & Gas Property | Oct 2024 |
| 40474 | UNION-STATE | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40475 | UNISON | Tarrant County, TX | Gas Property | Sep 2024 |
| 40476 | UNIT | Wood County, TX | Oil Property | Sep 2024 |
| 40477 | UNITED 1 | Moore County, TX | Gas Property | Sep 2024 |
| 40478 | UNITED PRESBYTERIAN CHURCH | Dawson County, TX | Oil & Gas Property | Aug 2015 |
| 40479 | UNIV | Crockett County, TX | Oil & Gas Property | Aug 2024 |
| 40480 | UNIV | Ward County, TX | Oil & Gas Property | Aug 2024 |
| 40481 | UNIV. -P | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40482 | UNIV. 11 SEC. 1 | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40483 | UNIV. CONSOLIDATED X | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40484 | UNIV2 HR | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40485 | UNIV3 VINCENT2 | Upton County, TX | Oil & Gas Property | Sep 2024 |
| 40486 | UNIV4 DANNETTE33 | Upton County, TX | Oil & Gas Property | Sep 2024 |
| 40487 | UNIV5 | Upton County, TX | Oil & Gas Property | Sep 2022 |
| 40488 | UNIV6 | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40489 | UNIVANISTON | Crane County, TX | Oil & Gas Property | Sep 2024 |
| 40490 | UNIVBAILEY | Crane County, TX | Oil & Gas Property | Sep 2024 |
| 40491 | UNIVCARLA | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40492 | UNIVDANA | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40493 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Sep 2024 |
| 40494 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40495 | UNIVERSITY | Schleicher County, TX | Oil & Gas Property | Sep 2024 |
| 40496 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Sep 2012 |
| 40497 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Sep 2024 |
| 40498 | UNIVERSITY | Ward County, TX | Oil & Gas Property | Sep 2024 |
| 40499 | UNIVERSITY | Crane County, TX | Oil & Gas Property | Sep 2024 |
| 40500 | UNIVERSITY | Crane County, TX | Oil & Gas Property | Sep 2024 |