| 1901 | STATE 5 | Phillips County, MT | Gas Property | Feb 2024 |
| 1902 | STATE BLACKJACK | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1903 | STATE D | Dawson County, MT | Oil & Gas Property | Feb 2024 |
| 1904 | STATE DARROW | Liberty County, MT | Oil & Gas Property | Nov 2023 |
| 1905 | STATE OF M | Blaine County, MT | Gas Property | Jun 2020 |
| 1906 | STATELINE | Roosevelt County, MT | Oil & Gas Property | Feb 2024 |
| 1907 | STEIGER | Toole County, MT | Gas Property | Jan 2024 |
| 1908 | STEINBEISSER | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1909 | STEINBEISSER | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1910 | STEINBEISSER | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1911 | STEINBEISSER 11X-18 | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1912 | STENSVAD | Musselshell County, MT | Oil Property | Jan 2024 |
| 1913 | STENSVAD | Rosebud County, MT | Oil Property | Jan 2024 |
| 1914 | STEPHENS WHITE | Blaine County, MT | Gas Property | Feb 2012 |
| 1915 | STEPPLER | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1916 | STEPPLER STATE 34X-16 | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1917 | STEVENS | Blaine County, MT | Gas Property | Jan 2024 |
| 1918 | STILES | Phillips County, MT | Gas Property | Jan 2024 |
| 1919 | STILT FEDERAL 2658 42-22H | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1920 | STIMPSON | Sweet Grass County, MT | Gas Property | Oct 2022 |
| 1921 | STINGER 1-28H | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1922 | STIRLING | Hill County, MT | Gas Property | Feb 2024 |
| 1923 | STOCKADE | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1924 | STOCKADE-GUNDERSON 2-7H | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1925 | STONE | Toole County, MT | Oil Property | Dec 2023 |
| 1926 | STONEWALL FED. 2959 43-21H | Roosevelt County, MT | Oil & Gas Property | Feb 2024 |
| 1927 | STONEY BUTTE | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1928 | STORM | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1929 | STORVIK | Richland County, MT | Oil & Gas Property | Jan 2024 |
| 1930 | STRASHEIM | Richland County, MT | Oil & Gas Property | Dec 2023 |
| 1931 | STRATTON | Toole County, MT | Gas Property | Nov 2023 |
| 1932 | STRINGER | Sheridan County, MT | Oil & Gas Property | Dec 2013 |
| 1933 | STROOCK | Toole County, MT | Gas Property | Feb 2024 |
| 1934 | STUFFT | Glacier County, MT | Oil & Gas Property | Feb 2024 |
| 1935 | STUKER 1 | Blaine County, MT | Gas Property | Apr 2016 |
| 1936 | SULLIVAN | Toole County, MT | Oil Property | Dec 2023 |
| 1937 | SUN TRIBAL | Valley County, MT | Oil & Gas Property | Feb 2024 |
| 1938 | SUNDANCE KID | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1939 | SUNDHEIM | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1940 | SUNDHEIM | Roosevelt County, MT | Oil & Gas Property | Mar 2017 |
| 1941 | SUNDHEIM | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1942 | SUNDHEIM | Richland County, MT | Oil & Gas Property | Jan 1998 |
| 1943 | SUNDHEIM | Richland County, MT | Oil & Gas Property | Mar 2014 |
| 1944 | SUNDHEIM 21-3 | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1945 | SUNSET-BYRNE | Toole County, MT | Oil Property | Dec 1994 |
| 1946 | SUNWALL | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1947 | SUPHELLEN | Toole County, MT | Oil & Gas Property | Jan 2024 |
| 1948 | SUSIE | Roosevelt County, MT | Oil & Gas Property | Feb 2024 |
| 1949 | SUTA | Toole County, MT | Oil Property | Feb 2024 |
| 1950 | SUTTON | Toole County, MT | Oil & Gas Property | Nov 2023 |
| 1951 | SVENSON | Liberty County, MT | Gas Property | Jan 2001 |
| 1952 | SW BATTLE | Blaine County, MT | Gas Property | Dec 2018 |
| 1953 | SW CHERRY PATCH | Blaine County, MT | Gas Property | Jan 2020 |
| 1954 | SW CHERRY PATCH | Blaine County, MT | Gas Property | Jan 2020 |
| 1955 | SWANSON | Pondera County, MT | Gas Property | Dec 2023 |
| 1956 | SWAYZE | Toole County, MT | Oil & Gas Property | Feb 2024 |
| 1957 | SWCBSU | Pondera County, MT | Oil & Gas Property | Feb 2024 |
| 1958 | SWEARS | Toole County, MT | Oil Property | Feb 2024 |
| 1959 | SWENDSEID | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1960 | SWENSEN | Glacier County, MT | Oil Property | Dec 2023 |
| 1961 | SWENSON | Glacier County, MT | Oil Property | Feb 2021 |
| 1962 | SWICK | Hill County, MT | Gas Property | Jan 2024 |
| 1963 | SWIGART | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1964 | TALEN 2759 43-7H | Roosevelt County, MT | Oil & Gas Property | Feb 2024 |
| 1965 | TAMMY | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1966 | TANA 2759 43-7H | Roosevelt County, MT | Oil & Gas Property | Feb 2024 |
| 1967 | TANGE | Sheridan County, MT | Oil & Gas Property | Jan 2024 |
| 1968 | TANNER | Powder River County, MT | Oil & Gas Property | Nov 1996 |
| 1969 | TAULE | Toole County, MT | Oil Property | Feb 2024 |
| 1970 | TAUTGES 2 | Hill County, MT | Gas Property | Feb 2024 |
| 1971 | TAYLOR | Richland County, MT | Oil & Gas Property | Jan 2024 |
| 1972 | TAYLOR | Liberty County, MT | Oil & Gas Property | Jan 2024 |
| 1973 | TCBSU 1 | Glacier County, MT | Oil & Gas Property | Jan 2014 |
| 1974 | TETERUD | Glacier County, MT | Gas Property | Jan 2024 |
| 1975 | TETON A | Teton County, MT | Oil Property | Nov 2023 |
| 1976 | TEXACO | Toole County, MT | Oil Property | Jan 2024 |
| 1977 | THELMA | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1978 | THEONNES | Toole County, MT | Oil & Gas Property | Nov 2023 |
| 1979 | THERESE | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1980 | THIEL | Toole County, MT | Gas Property | Jan 2024 |
| 1981 | THIEL | Hill County, MT | Gas Property | Feb 2024 |
| 1982 | THIEL | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1983 | THOMAS | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1984 | THOMAS | Glacier County, MT | Gas Property | Jan 2024 |
| 1985 | THOMAS | Teton County, MT | Oil Property | Jan 2024 |
| 1986 | THOMAS-BETTYE HSU | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1987 | THOMPSON | Pondera County, MT | Oil & Gas Property | Jan 2024 |
| 1988 | THOMPSON | Glacier County, MT | Oil & Gas Property | Dec 2023 |
| 1989 | THOMPSON | Toole County, MT | Oil Property | Jul 2023 |
| 1990 | THORBJORNSON | Richland County, MT | Oil & Gas Property | Jan 2003 |
| 1991 | THORNTON | Toole County, MT | Gas Property | Jan 2024 |
| 1992 | THORSON | Sheridan County, MT | Oil & Gas Property | Jan 2024 |
| 1993 | THUMM | Toole County, MT | Oil Property | Aug 2016 |
| 1994 | TIBER | Toole County, MT | Gas Property | Jan 2024 |
| 1995 | TIESZEN | Valley County, MT | Oil & Gas Property | Feb 2024 |
| 1996 | TIM FEDERAL 2658 21-10H | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 1997 | TININENKO | Roosevelt County, MT | Oil & Gas Property | Jan 2024 |
| 1998 | TMCBSU | Pondera County, MT | Oil Property | Jan 2024 |
| 1999 | TOLKSDORF | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 2000 | TOLKSDORF 24X-27 | Richland County, MT | Oil & Gas Property | Feb 2024 |