| 2001 | STENSVAD | Rosebud County, MT | Oil Property | May 2025 |
| 2002 | STEPHENS WHITE | Blaine County, MT | Gas Property | Feb 2012 |
| 2003 | STEPPLER | Richland County, MT | Oil & Gas Property | May 2025 |
| 2004 | STEPPLER STATE 34X-16 | Richland County, MT | Oil & Gas Property | May 2025 |
| 2005 | STEVENS | Blaine County, MT | Gas Property | May 2025 |
| 2006 | STILES | Phillips County, MT | Gas Property | May 2025 |
| 2007 | STILT FEDERAL 2658 42-22H | Richland County, MT | Oil & Gas Property | May 2025 |
| 2008 | STIMPSON | Sweet Grass County, MT | Gas Property | Oct 2022 |
| 2009 | STINGER 1-28H | Richland County, MT | Oil & Gas Property | May 2025 |
| 2010 | STIRLING | Hill County, MT | Gas Property | May 2025 |
| 2011 | STOCKADE | Richland County, MT | Oil & Gas Property | May 2025 |
| 2012 | STOCKADE-GUNDERSON 2-7-H | Richland County, MT | Oil & Gas Property | May 2025 |
| 2013 | STONE | Toole County, MT | Oil Property | Mar 2025 |
| 2014 | STONEWALL FED. 2959 43-21H | Roosevelt County, MT | Oil & Gas Property | May 2025 |
| 2015 | STONEY BUTTE | Richland County, MT | Oil & Gas Property | May 2025 |
| 2016 | STORVIK | Richland County, MT | Oil & Gas Property | May 2025 |
| 2017 | STRASHEIM | Richland County, MT | Oil & Gas Property | Oct 2024 |
| 2018 | STRATTON | Toole County, MT | Gas Property | Mar 2025 |
| 2019 | STRINGER | Sheridan County, MT | Oil & Gas Property | Dec 2013 |
| 2020 | STROOCK | Toole County, MT | Gas Property | May 2025 |
| 2021 | STUBBE | Sheridan County, MT | Oil & Gas Property | Apr 2025 |
| 2022 | STUFFT | Glacier County, MT | Oil & Gas Property | May 2025 |
| 2023 | STUKER 1 | Blaine County, MT | Gas Property | Apr 2016 |
| 2024 | SULLIVAN | Toole County, MT | Oil Property | Feb 2025 |
| 2025 | SUN TRIBAL | Valley County, MT | Oil & Gas Property | May 2025 |
| 2026 | SUNDANCE KID | Richland County, MT | Oil & Gas Property | May 2025 |
| 2027 | SUNDHEIM | Richland County, MT | Oil & Gas Property | May 2025 |
| 2028 | SUNDHEIM | Roosevelt County, MT | Oil & Gas Property | Mar 2017 |
| 2029 | SUNDHEIM | Richland County, MT | Oil & Gas Property | May 2025 |
| 2030 | SUNDHEIM | Richland County, MT | Oil & Gas Property | Jan 1998 |
| 2031 | SUNDHEIM | Richland County, MT | Oil & Gas Property | Mar 2014 |
| 2032 | SUNDHEIM 21-3 | Richland County, MT | Oil & Gas Property | May 2025 |
| 2033 | SUNDHEIM 26-35 | Richland County, MT | Oil & Gas Property | May 2025 |
| 2034 | SUNSET BYRNE | Toole County, MT | Oil Property | Dec 1994 |
| 2035 | SUNWALL | Richland County, MT | Oil & Gas Property | May 2025 |
| 2036 | SUPHELLEN | Toole County, MT | Oil & Gas Property | May 2025 |
| 2037 | SUSIE | Roosevelt County, MT | Oil & Gas Property | May 2025 |
| 2038 | SUTA | Toole County, MT | Oil Property | May 2025 |
| 2039 | SUTTON | Toole County, MT | Oil & Gas Property | Apr 2025 |
| 2040 | SVENSON | Liberty County, MT | Gas Property | Jan 2001 |
| 2041 | SW BATTLE | Blaine County, MT | Gas Property | Jan 2019 |
| 2042 | SW CHERRY PATCH | Blaine County, MT | Gas Property | Jan 2020 |
| 2043 | SW CHERRY PATCH | Blaine County, MT | Gas Property | Jan 2020 |
| 2044 | SWANSON | Pondera County, MT | Gas Property | Feb 2025 |
| 2045 | SWAYZE | Toole County, MT | Oil & Gas Property | Apr 2025 |
| 2046 | SWCBSU | Pondera County, MT | Oil & Gas Property | Apr 2025 |
| 2047 | SWEARS | Toole County, MT | Oil Property | May 2025 |
| 2048 | SWENDSEID | Richland County, MT | Oil & Gas Property | May 2025 |
| 2049 | SWENSEN | Glacier County, MT | Oil Property | Mar 2025 |
| 2050 | SWENSON | Glacier County, MT | Oil Property | Feb 2021 |
| 2051 | SWICK | Hill County, MT | Gas Property | Apr 2025 |
| 2052 | SWIGART | Richland County, MT | Oil & Gas Property | May 2025 |
| 2053 | SWINDLE 1 | Roosevelt County, MT | Oil & Gas Property | May 2025 |
| 2054 | TALEN 2759 43-7H | Roosevelt County, MT | Oil & Gas Property | May 2025 |
| 2055 | TAMMY | Richland County, MT | Oil & Gas Property | May 2025 |
| 2056 | TANGE | Sheridan County, MT | Oil & Gas Property | Feb 2025 |
| 2057 | TANNER | Powder River County, MT | Oil & Gas Property | Nov 1996 |
| 2058 | TAULE | Toole County, MT | Oil Property | Mar 2025 |
| 2059 | TAUTGES 2 | Hill County, MT | Gas Property | May 2025 |
| 2060 | TAYLOR | Richland County, MT | Oil & Gas Property | May 2025 |
| 2061 | TAYLOR | Liberty County, MT | Oil & Gas Property | May 2025 |
| 2062 | TCB 11-2-35 | Richland County, MT | Oil & Gas Property | May 2025 |
| 2063 | TCBSU 1 | Glacier County, MT | Oil & Gas Property | Jan 2014 |
| 2064 | TETERUD | Glacier County, MT | Gas Property | May 2025 |
| 2065 | TETON A | Teton County, MT | Oil Property | Apr 2025 |
| 2066 | TEXACO | Toole County, MT | Oil Property | Apr 2025 |
| 2067 | THELMA | Richland County, MT | Oil & Gas Property | May 2025 |
| 2068 | THEONNES | Toole County, MT | Oil & Gas Property | Mar 2025 |
| 2069 | THERESE | Richland County, MT | Oil & Gas Property | May 2025 |
| 2070 | THIEL | Toole County, MT | Gas Property | May 2025 |
| 2071 | THIEL | Hill County, MT | Gas Property | May 2025 |
| 2072 | THIEL | Richland County, MT | Oil & Gas Property | May 2025 |
| 2073 | THOMAS | Richland County, MT | Oil & Gas Property | May 2025 |
| 2074 | THOMAS | Glacier County, MT | Gas Property | May 2025 |
| 2075 | THOMAS | Teton County, MT | Oil Property | Mar 2025 |
| 2076 | THOMAS-BETTYE HSU | Richland County, MT | Oil & Gas Property | May 2025 |
| 2077 | THOMPSON | Pondera County, MT | Oil & Gas Property | Apr 2025 |
| 2078 | THOMPSON | Glacier County, MT | Oil & Gas Property | Mar 2025 |
| 2079 | THOMPSON | Toole County, MT | Oil Property | Aug 2024 |
| 2080 | THORBJORNSON | Richland County, MT | Oil & Gas Property | Jan 2003 |
| 2081 | THORNBERRY 1 | Chouteau County, MT | Gas Property | Dec 1989 |
| 2082 | THORNTON | Toole County, MT | Gas Property | Apr 2025 |
| 2083 | THORSON | Sheridan County, MT | Oil & Gas Property | May 2025 |
| 2084 | THUMM | Toole County, MT | Oil Property | Aug 2016 |
| 2085 | TIBER | Toole County, MT | Gas Property | May 2025 |
| 2086 | TIESZEN | Valley County, MT | Oil & Gas Property | May 2025 |
| 2087 | TIM FEDERAL 2658 21-10H | Richland County, MT | Oil & Gas Property | May 2025 |
| 2088 | TININENKO | Roosevelt County, MT | Oil & Gas Property | Mar 2025 |
| 2089 | TMCBSU | Pondera County, MT | Oil Property | Apr 2025 |
| 2090 | TOLKSDORF | Richland County, MT | Oil & Gas Property | May 2025 |
| 2091 | TOLKSDORF 24X-27 | Richland County, MT | Oil & Gas Property | May 2025 |
| 2092 | TOLLESON | Glacier County, MT | Oil Property | Mar 2025 |
| 2093 | TONI | Richland County, MT | Oil & Gas Property | May 2025 |
| 2094 | TONJUM | Hill County, MT | Gas Property | May 2025 |
| 2095 | TORDALE | Toole County, MT | Oil & Gas Property | Mar 2005 |
| 2096 | TORGERSON 33C-1-1 | Richland County, MT | Oil & Gas Property | Apr 2025 |
| 2097 | TORPEN 32-14 | Sheridan County, MT | Oil & Gas Property | May 2025 |
| 2098 | TOWER | Richland County, MT | Oil & Gas Property | May 2025 |
| 2099 | TOWN O | Phillips County, MT | Gas Property | May 2025 |
| 2100 | TOWNSEND | Liberty County, MT | Gas Property | Apr 2025 |