| 1901 | SITES | Glasscock County, TX | Oil & Gas Property | Jan 2026 |
| 1902 | SITTA, R. E., ETAL | Hardeman County, TX | Oil & Gas Property | Sep 2021 |
| 1903 | SITTER | Wheeler County, TX | Oil & Gas Property | Jan 2026 |
| 1904 | SITTING BULL UNIT | Tarrant County, TX | Oil & Gas Property | Jan 2026 |
| 1905 | SITTON | Palo Pinto County, TX | Oil & Gas Property | Jan 2026 |
| 1906 | SITTON GU 1 | Nacogdoches County, TX | Oil & Gas Property | Jan 2026 |
| 1907 | SITZ UNIT | Wise County, TX | Oil & Gas Property | Jan 2026 |
| 1908 | SITZ-DOYLE SITZ SOUTH | Wise County, TX | Oil & Gas Property | Jan 2026 |
| 1909 | SIVELLS BEND UNIT (BASAL PENN) | Cooke County, TX | Oil & Gas Property | Dec 2025 |
| 1910 | SIX HEARTS, LTD., ET AL | Terry County, TX | Oil & Gas Property | Jan 2026 |
| 1911 | SIX-ROOS | Duval County, TX | Oil & Gas Property | Aug 2025 |
| 1912 | SIXES PICK | King County, TX | Oil Property | Jan 2026 |
| 1913 | SIXTEEN PENNY NAIL 310 | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 1914 | SIXTEEN STONE 416 | Yoakum County, TX | Oil & Gas Property | Jan 2026 |
| 1915 | SIZELOVE | Cooke County, TX | Oil & Gas Property | Dec 2025 |
| 1916 | SJM UNIT | La Salle County, TX | Oil & Gas Property | Jan 2026 |
| 1917 | SJWF | Dickens County, TX | Oil & Gas Property | Jan 2026 |
| 1918 | SKAGGS | Live Oak County, TX | Oil & Gas Property | Dec 2025 |
| 1919 | SKAGGS | Johnson County, TX | Gas Property | Jan 2026 |
| 1920 | SKAGGS | Grayson County, TX | Oil & Gas Property | Jan 2026 |
| 1921 | SKAGGS | Upton County, TX | Oil & Gas Property | Nov 2025 |
| 1922 | SKAGGS LEWIS | Jack County, TX | Oil & Gas Property | Jan 2026 |
| 1923 | SKEETER UNIT | Atascosa County, TX | Oil & Gas Property | Jan 2026 |
| 1924 | SKELETOR | Upton County, TX | Oil & Gas Property | Jan 2026 |
| 1925 | SKELLY-STOKER | Garza County, TX | Oil & Gas Property | Jan 2026 |
| 1926 | SKELLY-UNIVERSITY | Reagan County, TX | Oil & Gas Property | Dec 2025 |
| 1927 | SKELLY-WEBB | Gray County, TX | Gas Property | Jan 2026 |
| 1928 | SKIATEX | Hutchinson County, TX | Oil & Gas Property | Oct 2022 |
| 1929 | SKIDMORE | Montague County, TX | Oil & Gas Property | Jan 2026 |
| 1930 | SKIDMORE J | Gray County, TX | Oil & Gas Property | Apr 2019 |
| 1931 | SKILES | Parker County, TX | Oil & Gas Property | Jan 2026 |
| 1932 | SKILLERN K GU | San Augustine County, TX | Oil & Gas Property | Jan 2026 |
| 1933 | SKINNER | Montague County, TX | Oil & Gas Property | Jan 2026 |
| 1934 | SKINNER | Wise County, TX | Oil & Gas Property | Jan 2026 |
| 1935 | SKINNER | Wise County, TX | Oil & Gas Property | Dec 2025 |
| 1936 | SKINNER | Hansford County, TX | Oil & Gas Property | Dec 2025 |
| 1937 | SKINNER -A | Cass County, TX | Oil & Gas Property | Dec 2025 |
| 1938 | SKINNER 34-116 | Ward County, TX | Oil & Gas Property | Jan 2026 |
| 1939 | SKINNER G | Wichita County, TX | Oil & Gas Property | Jan 2026 |
| 1940 | SKINNER-FLETCHER | Wise County, TX | Oil & Gas Property | Jan 2026 |
| 1941 | SKINNY DENNIS 468 | Yoakum County, TX | Oil & Gas Property | Jan 2026 |
| 1942 | SKIPJACK | La Salle County, TX | Oil & Gas Property | Jan 2026 |
| 1943 | SKIPPER | Taylor County, TX | Oil & Gas Property | Jan 2026 |
| 1944 | SKIPPER | Gregg County, TX | Oil & Gas Property | Jan 2026 |
| 1945 | SKIPPER | Hood County, TX | Oil & Gas Property | Jan 2026 |
| 1946 | SKIPPER | Gregg County, TX | Oil & Gas Property | Sep 2024 |
| 1947 | SKIPPER | Brooks County, TX | Oil & Gas Property | Jan 2026 |
| 1948 | SKIPPER ESTATE | Shelby County, TX | Oil & Gas Property | Oct 2025 |
| 1949 | SKLAR, CHARL | Victoria County, TX | Oil & Gas Property | Jan 2026 |
| 1950 | SKLOSS UNIT | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 1951 | SKLOSS-KARNES A USW | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 1952 | SKRIVANEK | Burleson County, TX | Oil & Gas Property | Jan 2026 |
| 1953 | SKRIVANEK | Burleson County, TX | Oil & Gas Property | Jan 2026 |
| 1954 | SKRIVANEK-EHLERT UNIT NO. 1 | Burleson County, TX | Oil & Gas Property | Jan 2026 |
| 1955 | SKRIVANEK-STECK UNIT NO 1 | Burleson County, TX | Oil & Gas Property | Jan 2026 |
| 1956 | SKROBARCEK P.J | Guadalupe County, TX | Oil & Gas Property | Dec 2025 |
| 1957 | SKY CITY | Bee County, TX | Oil & Gas Property | Jan 2026 |
| 1958 | SKY KING 47 | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1959 | SKY MCCARN 4H | Bee County, TX | Oil & Gas Property | Feb 2026 |
| 1960 | SKY PILOT 57-46 | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1961 | SKYCATCHER 56-3-5 1H | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1962 | SKYE UNIT | Atascosa County, TX | Oil & Gas Property | Jan 2026 |
| 1963 | SKYFALL STATE | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1964 | SKYHAWK 57-1-28 UNIT 1H | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1965 | SKYLANE 57-1-9 UNIT 1H | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1966 | SKYLINE | Tarrant County, TX | Gas Property | Jan 2026 |
| 1967 | SKYWEST | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 1968 | SLACK | Tom Green County, TX | Oil & Gas Property | Dec 2025 |
| 1969 | SLACK | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 1970 | SLACK | Brown County, TX | Oil & Gas Property | Mar 2019 |
| 1971 | SLACK | Rusk County, TX | Oil & Gas Property | Jan 2026 |
| 1972 | SLACK BOX 54-2 | Loving County, TX | Oil & Gas Property | Jan 2026 |
| 1973 | SLACKBOX 54-2-32 LOV UNIT | Loving County, TX | Oil & Gas Property | Jan 2026 |
| 1974 | SLAGLE | Cooke County, TX | Oil & Gas Property | Jan 2026 |
| 1975 | SLAGLE | Montague County, TX | Oil & Gas Property | Jan 2026 |
| 1976 | SLAGLE-FALLON | Grayson County, TX | Oil & Gas Property | Jan 2026 |
| 1977 | SLASH | Loving County, TX | Oil & Gas Property | Oct 2025 |
| 1978 | SLASH | Loving County, TX | Oil & Gas Property | Dec 2025 |
| 1979 | SLAT | Ector County, TX | Oil & Gas Property | Aug 2015 |
| 1980 | SLATER | Howard County, TX | Oil & Gas Property | Jan 2026 |
| 1981 | SLATER | Young County, TX | Oil & Gas Property | Jan 2026 |
| 1982 | SLATON G.H | Gregg County, TX | Oil & Gas Property | Jan 2026 |
| 1983 | SLATOR | Ector County, TX | Oil & Gas Property | Jan 2026 |
| 1984 | SLATOR | Upton County, TX | Oil & Gas Property | Jan 2026 |
| 1985 | SLATOR A TRACT | Ector County, TX | Oil & Gas Property | Jan 2026 |
| 1986 | SLATOR RANCH | Zapata County, TX | Oil & Gas Property | Jan 2026 |
| 1987 | SLATOR RANCH A | Zapata County, TX | Oil & Gas Property | Jan 2026 |
| 1988 | SLATTON | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 1989 | SLAUGHTER | Hockley County, TX | Oil & Gas Property | Jan 2026 |
| 1990 | SLAUGHTER | Pecos County, TX | Oil & Gas Property | Jan 2026 |
| 1991 | SLAUGHTER | Clay County, TX | Oil & Gas Property | Jan 2026 |
| 1992 | SLAUGHTER | Ochiltree County, TX | Oil & Gas Property | Jan 2026 |
| 1993 | SLAUGHTER | Borden County, TX | Oil & Gas Property | Jan 2026 |
| 1994 | SLAUGHTER | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 1995 | SLAUGHTER | Reagan County, TX | Oil & Gas Property | Jan 2026 |
| 1996 | SLAUGHTER | Garza County, TX | Oil & Gas Property | Jan 2026 |
| 1997 | SLAUGHTER | Cochran County, TX | Oil & Gas Property | Jan 2026 |
| 1998 | SLAUGHTER | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 1999 | SLAUGHTER | Matagorda County, TX | Oil & Gas Property | Dec 2025 |
| 2000 | SLAUGHTER | Webb County, TX | Oil & Gas Property | Jan 2026 |