| 131201 | UMBERSON | Montague County, TX | Oil & Gas Property | Oct 2025 |
| 131202 | UMBERT PETRARCA | Indiana County, PA | Gas Property | Dec 2024 |
| 131203 | UMBRELLA POINT UNIT | Chambers County, TX | Oil & Gas Property | Jul 2013 |
| 131204 | UMBRIEL B | Lavaca County, TX | Oil & Gas Property | Oct 2025 |
| 131205 | UMCC 'A' | Meade County, KS | Oil Property | May 2024 |
| 131206 | UMIVERSITY BLOCK 46 | Crockett County, TX | Oil & Gas Property | Oct 2025 |
| 131207 | UMLANG-LEHMANN UNIT | Lee County, TX | Oil & Gas Property | Oct 2025 |
| 131208 | UMMEL | Ness County, KS | Oil Property | Aug 2015 |
| 131209 | UMMEL | Ness County, KS | Oil Property | May 2025 |
| 131210 | UMMEL | Ness County, KS | Oil Property | Apr 2025 |
| 131211 | UMMEL | Ness County, KS | Oil Property | May 2025 |
| 131212 | UMMEL | Ness County, KS | Oil Property | May 2025 |
| 131213 | UMSTEAD | Stafford County, KS | Oil Property | May 2025 |
| 131214 | UMSTED | Ouachita County, AR | Oil & Gas Property | Sep 2025 |
| 131215 | UMSTED | Union County, AR | Oil Property | Sep 2025 |
| 131216 | UNA FIFE | Creek County, OK | Oil Property | Oct 2025 |
| 131217 | UNA HYRAL | Johnson County, TX | Gas Property | Oct 2025 |
| 131218 | UNBRIDLED 36 | Culberson County, TX | Oil & Gas Property | Oct 2025 |
| 131219 | UNBRIDLED 5-8-10-7 | Canadian County, OK | Oil & Gas Property | Jun 2025 |
| 131220 | UNCLE BILL | Kingfisher County, OK | Oil & Gas Property | Sep 2025 |
| 131221 | UNCLE BILL 1 | Lipscomb County, TX | Oil & Gas Property | Oct 2025 |
| 131222 | UNCLE CECIL | Terrell County, TX | Oil & Gas Property | Oct 2025 |
| 131223 | UNCLE CHES 21 16 FEDERAL COM | Lea County, NM | Oil & Gas Property | Oct 2025 |
| 131224 | UNCLE CHES 21 16 FEDERAL COM 125H | Lea County, NM | Oil & Gas Property | Oct 2025 |
| 131225 | UNCLE JERRY DAVIS | Liberty County, TX | Oil Property | Oct 2025 |
| 131226 | UNCLE RICHARD STATE COM | Lea County, NM | Oil & Gas Property | Oct 2025 |
| 131227 | UNCLE SAM | Lea County, NM | Oil & Gas Property | Oct 2025 |
| 131228 | UNCLE SAM 13 | Lea County, NM | Oil & Gas Property | May 2022 |
| 131229 | UNCOMPAGHRE STATE UNIT | Reeves County, TX | Oil & Gas Property | Oct 2025 |
| 131230 | UNCOMPAHGRE STATE 14-36-164-101 | Divide County, ND | Oil & Gas Property | Nov 2025 |
| 131231 | UNDAUNTED BSD STATE COM | Lea County, NM | Oil & Gas Property | Oct 2025 |
| 131232 | UNDER THE BRIDGE 452 | Yoakum County, TX | Oil & Gas Property | Oct 2025 |
| 131233 | UNDERDAHL | Pondera County, MT | Gas Property | Jun 2019 |
| 131234 | UNDERHILL | Weld County, CO | Oil & Gas Property | Oct 2025 |
| 131235 | UNDERHILL | Marshall County, OK | Oil Property | Aug 2024 |
| 131236 | UNDERHILL COAL | Clearfield County, PA | Gas Property | Dec 2023 |
| 131237 | UNDERWOOD | Harrison County, TX | Oil & Gas Property | Oct 2025 |
| 131238 | UNDERWOOD | Andrews County, TX | Oil & Gas Property | Oct 2025 |
| 131239 | UNDERWOOD | Tyler County, WV | Oil & Gas Property | Dec 2021 |
| 131240 | UNDERWOOD | Kearny County, KS | Gas Property | Jun 2025 |
| 131241 | UNDERWOOD | Caddo Parish, LA | Oil Property | Jan 2025 |
| 131242 | UNDERWOOD | McLean County, KY | Oil Property | Aug 2017 |
| 131243 | UNDERWOOD | Milam County, TX | Oil & Gas Property | Sep 2025 |
| 131244 | UNDERWOOD | Red River County, TX | Oil & Gas Property | Oct 2025 |
| 131245 | UNDERWOOD | Crawford County, KS | Oil Property | Aug 2020 |
| 131246 | UNDERWOOD | Lincoln County, OK | Oil & Gas Property | Oct 2025 |
| 131247 | UNDERWOOD | Greenwood County, KS | Oil Property | Jun 2025 |
| 131248 | UNDERWOOD | Beaver County, OK | Oil & Gas Property | Oct 2018 |
| 131249 | UNDERWOOD | Barton County, KS | Oil Property | Jun 2025 |
| 131250 | UNDERWOOD | Ward County, TX | Oil & Gas Property | Oct 2025 |
| 131251 | UNDERWOOD | Beaver County, OK | Gas Property | Jan 2024 |
| 131252 | UNDERWOOD | Chautauqua County, KS | Oil Property | Jun 2025 |
| 131253 | UNDERWOOD | Campbell County, WY | Oil & Gas Property | Aug 2005 |
| 131254 | UNDERWOOD | Stark County, OH | Oil & Gas Property | Dec 2024 |
| 131255 | UNDERWOOD | Coshocton County, OH | Oil & Gas Property | Dec 2023 |
| 131256 | UNDERWOOD | Howard County, TX | Oil & Gas Property | Sep 2025 |
| 131257 | UNDERWOOD | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 131258 | UNDERWOOD | Winkler County, TX | Oil & Gas Property | Oct 2025 |
| 131259 | UNDERWOOD | Doddridge County, WV | Oil & Gas Property | Oct 2021 |
| 131260 | UNDERWOOD | Faulkner County, AR | Gas Property | Jul 2024 |
| 131261 | UNDERWOOD | Haskell County, OK | Gas Property | Sep 2025 |
| 131262 | UNDERWOOD | Perry County, OH | Oil & Gas Property | Dec 2024 |
| 131263 | UNDERWOOD 33-7-15 | La Plata County, CO | Gas Property | Oct 2025 |
| 131264 | UNDERWOOD A | Seward County, KS | Oil & Gas Property | Jun 2025 |
| 131265 | UNDERWOOD ESTATE 1 | Lavaca County, TX | Oil & Gas Property | Oct 2025 |
| 131266 | UNDERWOOD, CHARLES G | Doddridge County, WV | Gas Property | Dec 2021 |
| 131267 | UNDERWOOD, RALPH | Tyler County, WV | Gas Property | Dec 2021 |
| 131268 | UNDERWOOD, RAYMOND | Tyler County, WV | Oil & Gas Property | Dec 2021 |
| 131269 | UNDERWOOD, RICHARD M | Wetzel County, WV | Oil & Gas Property | Dec 2021 |
| 131270 | UNDERWOOD-BREEN | Denton County, TX | Oil & Gas Property | Oct 2025 |
| 131271 | UNDERWOOD-JOHNSON 1 | Hutchinson County, TX | Oil & Gas Property | Sep 2025 |
| 131272 | UNDHJEM 1 | Burke County, ND | Oil & Gas Property | Nov 2025 |
| 131273 | UNDINE | Andrews County, TX | Oil & Gas Property | Oct 2025 |
| 131274 | UNEY 24-1 | Stanton County, KS | Oil & Gas Property | May 2005 |
| 131275 | UNFORGIVEN 34 113-114 | Ward County, TX | Oil & Gas Property | Oct 2025 |
| 131276 | UNGER | Armstrong County, PA | Gas Property | Dec 2024 |
| 131277 | UNGER | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 131278 | UNGER | Decatur County, KS | Oil Property | Aug 1988 |
| 131279 | UNGER | Yuma County, CO | Gas Property | Oct 2025 |
| 131280 | UNGER | Decatur County, KS | Oil Property | Mar 1995 |
| 131281 | UNGER | Yuma County, CO | Gas Property | Oct 2025 |
| 131282 | UNGER | Tuscarawas County, OH | Oil & Gas Property | Dec 2024 |
| 131283 | UNGLES | Haskell County, KS | Oil & Gas Property | Jun 2025 |
| 131284 | UNGLES | Haskell County, KS | Oil & Gas Property | Jun 2025 |
| 131285 | UNGLES | Haskell County, KS | Gas Property | Jun 2025 |
| 131286 | UNGUREAN | Coshocton County, OH | Oil & Gas Property | Dec 2024 |
| 131287 | UNI-UPR | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 131288 | UNICORN | Johnson County, TX | Gas Property | Oct 2025 |
| 131289 | UNICORN UNIT | Borden County, TX | Oil & Gas Property | Oct 2025 |
| 131290 | UNIMIN UNIT | Somervell County, TX | Oil & Gas Property | Oct 2025 |
| 131291 | UNION | Kern County, CA | Oil & Gas Property | Jun 2024 |
| 131292 | UNION | Union Parish, LA | Gas Property | Dec 2024 |
| 131293 | UNION | Hodgeman County, KS | Oil Property | Mar 2025 |
| 131294 | UNION | Garfield County, CO | Oil & Gas Property | Oct 2025 |
| 131295 | UNION | Union Parish, LA | Gas Property | Dec 2000 |
| 131296 | UNION | Orange County, CA | Oil & Gas Property | Nov 2025 |
| 131297 | UNION | Fremont County, WY | Oil & Gas Property | Oct 2017 |
| 131298 | UNION | Andrews County, TX | Oil & Gas Property | Oct 2025 |
| 131299 | UNION | Chaves County, NM | Oil Property | Feb 2007 |
| 131300 | UNION 33 FEDERAL | Chaves County, NM | Gas Property | Jul 2024 |