| 40301 | UL RATTLE | Ward County, TX | Oil & Gas Property | Nov 2021 |
| 40302 | UL REAGAN | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40303 | UL ROY | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40304 | UL SASQUATCH 1-37 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40305 | UL SITKA 12 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40306 | UL SPRINTER | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40307 | UL SPRUCE 1621-21 | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 40308 | UL STANOLIND 30-27 | Martin County, TX | Oil & Gas Property | Jun 2026 |
| 40309 | UL STATE LINDSEY DIXON | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40310 | UL SUGARLOAF | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40311 | UL SUNSHINE MESA 2 | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 40312 | UL TALLEY B | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40313 | UL TAWNY UNIT 8-12 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40314 | UL TENTH CAVALRY | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40315 | UL THE MACHINE | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 40316 | UL TIFFANY | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40317 | UL TILDEN 16-31-32 | Ward County, TX | Oil & Gas Property | May 2026 |
| 40318 | UL URAD 1609-21 | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 40319 | UL WASH PARK 2 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40320 | UL WAYLON | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 40321 | UL WILLIE | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 40322 | UL WILLOW 383633-16 | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40323 | UL WOLVERINE 22507 | Crane County, TX | Oil & Gas Property | Jun 2026 |
| 40324 | UL WTG 3-233 | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40325 | UL YELLOWTAIL | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 40326 | UL13 KEENE | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40327 | ULANDS 48 | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 40328 | ULLMAN | Gonzales County, TX | Oil & Gas Property | Jun 2026 |
| 40329 | ULLRICH 'A' | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 40330 | ULRICH | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 40331 | ULRICH A - WILLIAMS A SA 1 1H | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 40332 | ULS 4 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40333 | ULS 4 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40334 | ULS 5 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40335 | ULS 5-9 UNIT | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40336 | ULS 6-3 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40337 | ULS A | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40338 | ULS B | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40339 | ULS CDU | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40340 | ULS CDU 4-1 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40341 | ULVESTAD | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 40342 | ULVESTAD-BIRKHEAD E20 | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 40343 | UMA UNIT | Hill County, TX | Oil & Gas Property | Jun 2026 |
| 40344 | UMBERSON | Montague County, TX | Oil & Gas Property | Jun 2026 |
| 40345 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 40346 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | Jun 2026 |
| 40347 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40348 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 40349 | UNA HYRAL | Johnson County, TX | Gas Property | Jun 2026 |
| 40350 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | Apr 2026 |
| 40351 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | Jun 2026 |
| 40352 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | Jun 2026 |
| 40353 | UNCOMPAGHRE STATE UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 40354 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | Jun 2026 |
| 40355 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 40356 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40357 | UNDERWOOD | Milam County, TX | Oil & Gas Property | Jun 2026 |
| 40358 | UNDERWOOD | Red River County, TX | Oil & Gas Property | Jun 2026 |
| 40359 | UNDERWOOD | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40360 | UNDERWOOD | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 40361 | UNDERWOOD | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 40362 | UNDERWOOD-BREEN | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 40363 | UNDERWOOD-JOHNSON 1 | Hutchinson County, TX | Oil & Gas Property | May 2026 |
| 40364 | UNDINE | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40365 | UNFORGIVEN 34 113-114 | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40366 | UNICORN | Johnson County, TX | Gas Property | Jun 2026 |
| 40367 | UNICORN UNIT | Borden County, TX | Oil & Gas Property | Jun 2026 |
| 40368 | UNIMIN UNIT | Somervell County, TX | Oil & Gas Property | Jun 2026 |
| 40369 | UNION | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40370 | UNION CENT | Nueces County, TX | Oil & Gas Property | May 2026 |
| 40371 | UNION CENTRAL | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 40372 | UNION CENTRAL LIFE INS | Nueces County, TX | Gas Property | Jun 2026 |
| 40373 | UNION CENTRAL-CONDEE WELCH (SA) 1H | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 40374 | UNION HILL | Washington County, TX | Oil & Gas Property | Jun 2026 |
| 40375 | UNION PACIFIC | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40376 | UNION PACIFIC 7 | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40377 | UNION RANCH | Webb County, TX | Oil & Gas Property | May 2026 |
| 40378 | UNION VALLEY A | Dawson County, TX | Oil & Gas Property | Jun 2026 |
| 40379 | UNION-STATE | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40380 | UNISON | Tarrant County, TX | Gas Property | Jun 2026 |
| 40381 | UNIT | Wood County, TX | Oil Property | Jun 2026 |
| 40382 | UNITED 1 | Moore County, TX | Gas Property | May 2026 |
| 40383 | UNITED PRESBYTERIAN CHURCH | Dawson County, TX | Oil & Gas Property | Aug 2015 |
| 40384 | UNIV | Crockett County, TX | Oil & Gas Property | Apr 2026 |
| 40385 | UNIV | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 40386 | UNIV. 11 SEC. 1 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40387 | UNIV. CONSOLIDATED X | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40388 | UNIV2 HR | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40389 | UNIV3 VINCENT2 | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 40390 | UNIV5 | Upton County, TX | Oil & Gas Property | Sep 2022 |
| 40391 | UNIV6 | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40392 | UNIVANISTON | Crane County, TX | Oil & Gas Property | Jun 2026 |
| 40393 | UNIVCARLA | Andrews County, TX | Oil & Gas Property | Jan 2025 |
| 40394 | UNIVDANA | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40395 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 40396 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40397 | UNIVERSITY | Schleicher County, TX | Oil & Gas Property | Jun 2026 |
| 40398 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Sep 2012 |
| 40399 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 40400 | UNIVERSITY | Ward County, TX | Oil & Gas Property | Jun 2026 |