| 129001 | U S FOREST SERVICE | Leslie County, KY | Oil & Gas Property | Dec 2024 |
| 129002 | U S FOREST SVC CENTRAL PA LUMBER | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 129003 | U S FORESTRY SERVICE 00 | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 129004 | U S GOVERNMENT | Caddo Parish, LA | Oil Property | Dec 2024 |
| 129005 | U S GOVERNMENT | Whitley County, KY | Oil & Gas Property | Dec 2023 |
| 129006 | U S GOVERNMENT | Leslie County, KY | Oil & Gas Property | Dec 2022 |
| 129007 | U S GOVERNMENT | Haskell County, OK | Gas Property | May 2026 |
| 129008 | U S GOVERNMENT NATL FOREST | Warren County, PA | Oil & Gas Property | Dec 2019 |
| 129009 | U S GOVT/ARMSTRONG FOREST | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 129010 | U S GYPSUM | Kent County, MI | Oil Property | Apr 2026 |
| 129011 | U S LIME | Johnson County, TX | Oil & Gas Property | May 2026 |
| 129012 | U S M 00 | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 129013 | U S P & F | Tuscaloosa County, AL | Gas Property | Dec 2025 |
| 129014 | U S SMELTING FEDERAL | Lea County, NM | Oil & Gas Property | Jan 2015 |
| 129015 | U S STEEL | Greene County, PA | Gas Property | Dec 2025 |
| 129016 | U S STEEL | Mingo County, WV | Gas Property | Dec 2021 |
| 129017 | U S STEEL CORPORATION | Jefferson County, AL | Gas Property | Jun 2026 |
| 129018 | U T ISERINGHAUSEN | St. Landry Parish, LA | Oil & Gas Property | Mar 2024 |
| 129019 | U-TEX | Ward County, TX | Oil & Gas Property | Nov 2025 |
| 129020 | U-TEX | Andrews County, TX | Oil & Gas Property | May 2026 |
| 129021 | U-TEX | Crane County, TX | Oil & Gas Property | Feb 2024 |
| 129022 | U. F. GAS MIN TR. 1 6 | Wayne County, WV | Gas Property | Dec 2021 |
| 129023 | U. L. JONES 28-7 #1 | Conecuh County, AL | Oil & Gas Property | Jun 2026 |
| 129024 | U. OF C | Kern County, CA | Oil & Gas Property | Jun 2026 |
| 129025 | U. S. A. 21-8 | Perry County, MS | Oil & Gas Property | May 2026 |
| 129026 | U. S. GOVER | Gove County, KS | Oil Property | Mar 2026 |
| 129027 | U. S. GOVERNMENT | Morton County, KS | Gas Property | Mar 2026 |
| 129028 | U. S. GOVERNMENT | Trego County, KS | Oil Property | Mar 2026 |
| 129029 | U.C. REGENTS | Yolo County, CA | Gas Property | Dec 1992 |
| 129030 | U.C.B. 0 | Santa Barbara County, CA | Oil & Gas Property | May 1998 |
| 129031 | U.C.L.I | Nueces County, TX | Oil & Gas Property | May 2026 |
| 129032 | U.P. UNIT | Los Angeles County, CA | Oil & Gas Property | May 2021 |
| 129033 | U.R.C. 23 | Glasscock County, TX | Oil & Gas Property | May 2026 |
| 129034 | U.S 19-15 | Chouteau County, MT | Gas Property | Jun 2026 |
| 129035 | U.S ARMY CORP | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 129036 | U.S. 15 | Blaine County, MT | Gas Property | Jun 2026 |
| 129037 | U.S. 26-1 | Blaine County, MT | Gas Property | Mar 2026 |
| 129038 | U.S. 27-1 | Blaine County, MT | Gas Property | Jun 2026 |
| 129039 | U.S. 29-1 | Blaine County, MT | Gas Property | Jul 2001 |
| 129040 | U.S. 33 | Chouteau County, MT | Gas Property | Jun 2026 |
| 129041 | U.S. ARMY CORP OF ENG | Wyoming County, WV | Gas Property | Dec 2021 |
| 129042 | U.S. ARMY CORP OF ENG. I. N. BROWN | Braxton County, WV | Oil & Gas Property | Dec 2021 |
| 129043 | U.S. ARMY CORP. OF ENG | Lewis County, WV | Oil & Gas Property | Dec 2015 |
| 129044 | U.S. DEPT. OF INTERIOR | Lewis County, WV | Gas Property | Dec 2021 |
| 129045 | U.S. PIPE & FOUNDRY | Tuscaloosa County, AL | Gas Property | Jun 2026 |
| 129046 | U.S. PIPE & FOUNDRY | Jefferson County, AL | Gas Property | Jan 2009 |
| 129047 | U.S. PIPE & FOUNDRY #1 | Tuscaloosa County, AL | Gas Property | Jan 2017 |
| 129048 | U.S. STEEL | Walker County, AL | Gas Property | May 2026 |
| 129049 | U.S. STEEL | Jefferson County, AL | Gas Property | Jun 2026 |
| 129050 | U.S. STEEL | Shelby County, AL | Gas Property | Dec 2000 |
| 129051 | U.S. STEEL | Wyoming County, WV | Gas Property | Oct 2005 |
| 129052 | U.S. STEEL | Mingo County, WV | Gas Property | Dec 2021 |
| 129053 | U.S. STEEL | Fayette County, AL | Oil & Gas Property | May 2026 |
| 129054 | U.S. STEEL 3 | Tuscaloosa County, AL | Gas Property | Jun 2026 |
| 129055 | U.S. STEEL MINING CO | McDowell County, WV | Gas Property | Jun 1999 |
| 129056 | U.S. STEEL MINING CO | Wyoming County, WV | Gas Property | Dec 2021 |
| 129057 | U.S.-DIR 1 | Blaine County, MT | Gas Property | Jun 2026 |
| 129058 | U.S.A. #1 | Bryan County, OK | Oil & Gas Property | May 2026 |
| 129059 | U.S.A. 1 | Kern County, CA | Oil Property | May 2026 |
| 129060 | U.S.A. 1 | Hocking County, OH | Oil & Gas Property | Dec 2025 |
| 129061 | U.S.A. 2 | Kern County, CA | Oil Property | May 2026 |
| 129062 | U.S.A. 5 | Kern County, CA | Oil Property | Aug 2011 |
| 129063 | U.S.A. LB | Nacogdoches County, TX | Oil & Gas Property | Apr 2026 |
| 129064 | U.S.A.-GUERRA B GAS UNIT | Starr County, TX | Oil & Gas Property | May 2026 |
| 129065 | U.S.A.3 | Franklin County, MS | Oil & Gas Property | Apr 2026 |
| 129066 | U.S.ARMY CORP OF ENG | Wayne County, WV | Gas Property | Dec 2021 |
| 129067 | U.S.F.S | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 129068 | U.S.FISH&WILDLIFE S | Pleasants County, WV | Oil & Gas Property | Dec 2020 |
| 129069 | U.S.L. 1 | Kern County, CA | Oil Property | May 2026 |
| 129070 | U.S.L. 1 | Kern County, CA | Oil Property | Jun 2026 |
| 129071 | U.S.L. 2 | Kern County, CA | Oil Property | Jun 2026 |
| 129072 | U.S.L. 2 | Kern County, CA | Oil Property | May 2026 |
| 129073 | U.S.L. 3 | Kern County, CA | Oil Property | Jun 2026 |
| 129074 | U.S.L. 3 | Kern County, CA | Oil Property | May 2026 |
| 129075 | U.S.L. 4 | Kern County, CA | Oil Property | Nov 2021 |
| 129076 | U.S.L. 4 | Kern County, CA | Oil Property | May 2026 |
| 129077 | U.S.L. 5 | Kern County, CA | Oil Property | May 2026 |
| 129078 | U.S.L. 6 | Kern County, CA | Oil Property | May 2026 |
| 129079 | U.S.L. 7 | Kern County, CA | Oil Property | May 2026 |
| 129080 | U.S.L. 8 | Kern County, CA | Oil & Gas Property | May 2026 |
| 129081 | U.S.STEEL MINING | Wyoming County, WV | Gas Property | Dec 2021 |
| 129082 | U.S.X. CORP | Jefferson County, AL | Gas Property | Aug 1990 |
| 129083 | U.S.X.-TAURUS-88-18-06 | Jefferson County, AL | Gas Property | Jun 2026 |
| 129084 | U.T. 3064 A | Irion County, TX | Oil & Gas Property | May 2026 |
| 129085 | U.V.I. FEDERAL 3-33 | Billings County, ND | Oil & Gas Property | Jun 2026 |
| 129086 | UA 88 | Jefferson County, AL | Gas Property | Mar 2022 |
| 129087 | UA-04-19-07-02 | Jefferson County, AL | Gas Property | Jun 2026 |
| 129088 | UA-TAURUS | Jefferson County, AL | Gas Property | Jun 2025 |
| 129089 | UB 13 | Andrews County, TX | Oil & Gas Property | May 2026 |
| 129090 | UB C108H | Reeves County, TX | Oil & Gas Property | May 2026 |
| 129091 | UBER | Indiana County, PA | Gas Property | Dec 2025 |
| 129092 | UBERNOSKY | Burleson County, TX | Oil & Gas Property | May 2026 |
| 129093 | UBERT | Ellis County, KS | Oil Property | Apr 2026 |
| 129094 | UC MILES | Clarion County, PA | Gas Property | Dec 2025 |
| 129095 | UCBH WW FEDERAL | Eddy County, NM | Oil & Gas Property | Oct 2019 |
| 129096 | UCKER | Hocking County, OH | Oil & Gas Property | Dec 2025 |
| 129097 | UCLI | Renville County, ND | Oil Property | Aug 2020 |
| 129098 | UCLI | Petroleum County, MT | Oil Property | May 2026 |
| 129099 | UCLI-SISK | Bottineau County, ND | Oil & Gas Property | Feb 2003 |
| 129100 | UCLI-STRATTON | Bottineau County, ND | Oil & Gas Property | Jun 2026 |