| 201 | UL13 KEENE | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 202 | ULANDS 48 | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 203 | ULLMAN | Gonzales County, TX | Oil & Gas Property | Jun 2026 |
| 204 | ULLRICH 'A' | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 205 | ULRICH | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 206 | ULRICH A - WILLIAMS A SA 1 1H | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 207 | ULS 4 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 208 | ULS 4 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 209 | ULS 5 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 210 | ULS 5-9 UNIT | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 211 | ULS 6-3 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 212 | ULS A | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 213 | ULS B | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 214 | ULS CDU | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 215 | ULS CDU 4-1 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 216 | ULVESTAD | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 217 | ULVESTAD-BIRKHEAD E20 | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 218 | UMA UNIT | Hill County, TX | Oil & Gas Property | Jun 2026 |
| 219 | UMBERSON | Montague County, TX | Oil & Gas Property | Jun 2026 |
| 220 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 221 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | Jun 2026 |
| 222 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 223 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 224 | UNA HYRAL | Johnson County, TX | Gas Property | Jun 2026 |
| 225 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | Apr 2026 |
| 226 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | Jun 2026 |
| 227 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | Jun 2026 |
| 228 | UNCOMPAGHRE STATE UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 229 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | Jun 2026 |
| 230 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 231 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 232 | UNDERWOOD | Milam County, TX | Oil & Gas Property | Jun 2026 |
| 233 | UNDERWOOD | Red River County, TX | Oil & Gas Property | Jun 2026 |
| 234 | UNDERWOOD | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 235 | UNDERWOOD | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 236 | UNDERWOOD | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 237 | UNDERWOOD-BREEN | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 238 | UNDERWOOD-JOHNSON 1 | Hutchinson County, TX | Oil & Gas Property | May 2026 |
| 239 | UNDINE | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 240 | UNFORGIVEN 34 113-114 | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 241 | UNICORN | Johnson County, TX | Gas Property | Jun 2026 |
| 242 | UNICORN UNIT | Borden County, TX | Oil & Gas Property | Jun 2026 |
| 243 | UNIMIN UNIT | Somervell County, TX | Oil & Gas Property | Jun 2026 |
| 244 | UNION | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 245 | UNION CENT | Nueces County, TX | Oil & Gas Property | May 2026 |
| 246 | UNION CENTRAL | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 247 | UNION CENTRAL LIFE INS | Nueces County, TX | Gas Property | Jun 2026 |
| 248 | UNION CENTRAL-CONDEE WELCH (SA) 1H | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 249 | UNION HILL | Washington County, TX | Oil & Gas Property | Jun 2026 |
| 250 | UNION PACIFIC | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 251 | UNION PACIFIC 7 | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 252 | UNION RANCH | Webb County, TX | Oil & Gas Property | May 2026 |
| 253 | UNION VALLEY A | Dawson County, TX | Oil & Gas Property | Jun 2026 |
| 254 | UNION-STATE | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 255 | UNISON | Tarrant County, TX | Gas Property | Jun 2026 |
| 256 | UNIT | Wood County, TX | Oil Property | Jun 2026 |
| 257 | UNITED 1 | Moore County, TX | Gas Property | May 2026 |
| 258 | UNITED PRESBYTERIAN CHURCH | Dawson County, TX | Oil & Gas Property | Aug 2015 |
| 259 | UNIV | Crockett County, TX | Oil & Gas Property | Apr 2026 |
| 260 | UNIV | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 261 | UNIV. 11 SEC. 1 | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 262 | UNIV. CONSOLIDATED X | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 263 | UNIV2 HR | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 264 | UNIV3 VINCENT2 | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 265 | UNIV5 | Upton County, TX | Oil & Gas Property | Sep 2022 |
| 266 | UNIV6 | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 267 | UNIVANISTON | Crane County, TX | Oil & Gas Property | Jun 2026 |
| 268 | UNIVCARLA | Andrews County, TX | Oil & Gas Property | Jan 2025 |
| 269 | UNIVDANA | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 270 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 271 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 272 | UNIVERSITY | Schleicher County, TX | Oil & Gas Property | Jun 2026 |
| 273 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Sep 2012 |
| 274 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 275 | UNIVERSITY | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 276 | UNIVERSITY | Crane County, TX | Oil & Gas Property | Jun 2026 |
| 277 | UNIVERSITY | Crane County, TX | Oil & Gas Property | Jun 2026 |
| 278 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 279 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 280 | UNIVERSITY | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 281 | UNIVERSITY | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 282 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 283 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 284 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 285 | UNIVERSITY | Pecos County, TX | Oil Property | Jan 2021 |
| 286 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 287 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Nov 2010 |
| 288 | UNIVERSITY | Pecos County, TX | Oil & Gas Property | Jun 2026 |
| 289 | UNIVERSITY | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 290 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 291 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 292 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 293 | UNIVERSITY | Schleicher County, TX | Oil & Gas Property | Jun 2026 |
| 294 | UNIVERSITY | Ward County, TX | Oil & Gas Property | Mar 2011 |
| 295 | UNIVERSITY | Martin County, TX | Oil & Gas Property | Jun 2026 |
| 296 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 297 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 298 | UNIVERSITY | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 299 | UNIVERSITY | Terrell County, TX | Oil & Gas Property | Jun 2026 |
| 300 | UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |