| 1901 | CLONA | Martin County, TX | Oil & Gas Property | Feb 2026 |
| 1902 | CLOPTON | Gaines County, TX | Oil Property | Feb 2026 |
| 1903 | CLORETTE DEPASTO 3-11 UNIT | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 1904 | CLOSE CITY 14 | Garza County, TX | Oil & Gas Property | Feb 2026 |
| 1905 | CLOSE JONNIE | Hutchinson County, TX | Oil & Gas Property | Feb 2026 |
| 1906 | CLOSS LAND & CATTLE | Brazos County, TX | Oil & Gas Property | Jan 2026 |
| 1907 | CLOSS WEST | Brazos County, TX | Oil & Gas Property | Jan 2026 |
| 1908 | CLOSS-RULAND UNIT | Robertson County, TX | Oil & Gas Property | Jan 2026 |
| 1909 | CLOUD | Shackelford County, TX | Oil & Gas Property | Dec 2013 |
| 1910 | CLOUD | Jones County, TX | Oil Property | Feb 2026 |
| 1911 | CLOUD (STRAWN SAND) UNIT | Haskell County, TX | Oil & Gas Property | Feb 2026 |
| 1912 | CLOUDCROFT | Glasscock County, TX | Oil & Gas Property | Feb 2026 |
| 1913 | CLOUGH ADELE | Wise County, TX | Oil & Gas Property | Feb 2026 |
| 1914 | CLOUGH MICHAEL | Wise County, TX | Oil & Gas Property | Feb 2026 |
| 1915 | CLOUS GAS UNIT | Nacogdoches County, TX | Gas Property | Feb 2026 |
| 1916 | CLOUSER M. H | Cochran County, TX | Oil & Gas Property | Feb 2026 |
| 1917 | CLOVER LEAF | Fort Bend County, TX | Oil & Gas Property | Jan 2026 |
| 1918 | CLOVERDALE 9796-F | Ward County, TX | Oil & Gas Property | Feb 2026 |
| 1919 | CLOWE | Throckmorton County, TX | Oil & Gas Property | Feb 2026 |
| 1920 | CLOWER | Rusk County, TX | Oil & Gas Property | Jan 2026 |
| 1921 | CLOWER | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 1922 | CLOWER UNIT | Montague County, TX | Oil & Gas Property | Feb 2026 |
| 1923 | CLSCM LTD | La Salle County, TX | Oil & Gas Property | Feb 2026 |
| 1924 | CLUBB WEST | Hardin County, TX | Oil & Gas Property | Feb 2026 |
| 1925 | CLUCK | Hansford County, TX | Gas Property | Feb 2026 |
| 1926 | CLUCK | Dawson County, TX | Oil & Gas Property | Feb 2026 |
| 1927 | CLUCK | Sherman County, TX | Oil & Gas Property | Feb 2026 |
| 1928 | CLUCK -D | Sherman County, TX | Oil & Gas Property | Feb 2026 |
| 1929 | CLUTE GAS UNIT | Leon County, TX | Oil & Gas Property | Feb 2026 |
| 1930 | CLUTE, M. G. GAS U | Leon County, TX | Oil & Gas Property | Feb 2026 |
| 1931 | CLUTE-DIEHL G | Leon County, TX | Oil & Gas Property | Feb 2026 |
| 1932 | CLUTTERED MIND 583 | Yoakum County, TX | Oil & Gas Property | Feb 2026 |
| 1933 | CLYBURN UNIT | Atascosa County, TX | Oil & Gas Property | Feb 2026 |
| 1934 | CLYDE | Glasscock County, TX | Oil & Gas Property | Feb 2019 |
| 1935 | CLYDE -B | Ector County, TX | Oil & Gas Property | Feb 2026 |
| 1936 | CLYDE BARROW UNIT 32-41 | Howard County, TX | Oil & Gas Property | Feb 2026 |
| 1937 | CLYDE BLAIR | Freestone County, TX | Oil & Gas Property | Jun 2015 |
| 1938 | CLYDE CLANTON | Howard County, TX | Oil & Gas Property | Oct 2018 |
| 1939 | CLYDE SMITH | Wise County, TX | Oil & Gas Property | Feb 2026 |
| 1940 | CLYDE VAN DUSEN 12 | Culberson County, TX | Oil & Gas Property | Feb 2026 |
| 1941 | CLYDE WILLIAMS UNIT | Robertson County, TX | Oil & Gas Property | Jan 2026 |
| 1942 | CLYDEAN | Upton County, TX | Oil & Gas Property | Feb 2026 |
| 1943 | CLYDESDALE | Atascosa County, TX | Oil & Gas Property | Mar 2026 |
| 1944 | CLYDESDALE | Frio County, TX | Oil & Gas Property | Feb 2026 |
| 1945 | CM MIPA ALLOC | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 1946 | CMAJDALKA | Edwards County, TX | Gas Property | Jan 2026 |
| 1947 | CMC BLUEBONNET 17/29 UNIT | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1948 | CMC BUTTERCUP 25-37 UNIT | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 1949 | CMC CAMDEN-FENWAY 22-34 | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1950 | CMC CANDLESTICK | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1951 | CMC FENWAY 22/34 | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1952 | CMC NIGHTSHADE 17/5 UNIT | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1953 | CMC PEONY | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1954 | CMC PORTERHOUSE | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1955 | CMC RIBEYE 34/35 | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1956 | CMC SNAPDRAGON 19-31 UNIT | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1957 | CMC SUNFLOWER | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1958 | CMC TIGER UNIT | Midland County, TX | Oil & Gas Property | Feb 2026 |
| 1959 | CME UNIT | Gonzales County, TX | Oil & Gas Property | Feb 2026 |
| 1960 | CMF CORPORATION | Sherman County, TX | Gas Property | Feb 2026 |
| 1961 | CML TRUST | Wharton County, TX | Oil & Gas Property | Jan 2025 |
| 1962 | CMTT | Clay County, TX | Oil & Gas Property | Feb 2026 |
| 1963 | CMWW | Dimmit County, TX | Oil & Gas Property | Feb 2026 |
| 1964 | CMWW | Dimmit County, TX | Oil & Gas Property | Feb 2026 |
| 1965 | CMWW HC | Dimmit County, TX | Oil & Gas Property | Feb 2026 |
| 1966 | CMWW UNIT | Dimmit County, TX | Oil & Gas Property | Feb 2026 |
| 1967 | CN UNIT | La Salle County, TX | Oil & Gas Property | Feb 2026 |
| 1968 | CNB G 345 | Lipscomb County, TX | Oil & Gas Property | Feb 2026 |
| 1969 | CNB TRUSTEE | Lipscomb County, TX | Oil & Gas Property | Feb 2026 |
| 1970 | CNG V | Hidalgo County, TX | Oil & Gas Property | Mar 2019 |
| 1971 | COACHWHIP 17-2 | Howard County, TX | Oil & Gas Property | Feb 2026 |
| 1972 | COACHWHIP 25 | Winkler County, TX | Oil & Gas Property | Feb 2026 |
| 1973 | COALE | Reeves County, TX | Oil & Gas Property | May 2025 |
| 1974 | COAN | Comanche County, TX | Oil & Gas Property | Feb 2026 |
| 1975 | COASTAL FEE | Hidalgo County, TX | Oil & Gas Property | Feb 2026 |
| 1976 | COATES | Reagan County, TX | Oil & Gas Property | Feb 2026 |
| 1977 | COATES | Eastland County, TX | Oil & Gas Property | Feb 2026 |
| 1978 | COATES | Starr County, TX | Oil & Gas Property | Feb 2026 |
| 1979 | COATES | Coleman County, TX | Oil & Gas Property | Dec 2025 |
| 1980 | COATES | Hood County, TX | Oil & Gas Property | Feb 2026 |
| 1981 | COATES | Hidalgo County, TX | Oil & Gas Property | Feb 2026 |
| 1982 | COATES | Karnes County, TX | Oil & Gas Property | Feb 2026 |
| 1983 | COATES | Pecos County, TX | Oil & Gas Property | Feb 2026 |
| 1984 | COATES -B-MARATHON UNIT | Reagan County, TX | Oil & Gas Property | Feb 2026 |
| 1985 | COATES B - COATES A UNIT | Reagan County, TX | Oil & Gas Property | Feb 2026 |
| 1986 | COATES DOLLYE 69 | Crockett County, TX | Oil & Gas Property | Feb 2026 |
| 1987 | COATES F G | Hidalgo County, TX | Oil & Gas Property | Feb 2026 |
| 1988 | COATES GEORGE H | Zapata County, TX | Oil & Gas Property | Feb 2026 |
| 1989 | COATES J. C. 1 | Eastland County, TX | Oil & Gas Property | Feb 2026 |
| 1990 | COATES SS | Starr County, TX | Oil & Gas Property | Jan 2026 |
| 1991 | COATES Y | Hidalgo County, TX | Oil & Gas Property | Jan 2026 |
| 1992 | COATES-DORCHESTER | Hidalgo County, TX | Oil & Gas Property | Nov 2024 |
| 1993 | COATS | Webb County, TX | Oil & Gas Property | Feb 2026 |
| 1994 | COATS | Stonewall County, TX | Oil Property | Jan 2026 |
| 1995 | COATS & | Coleman County, TX | Oil & Gas Property | Dec 2005 |
| 1996 | COBB | Jack County, TX | Oil & Gas Property | Feb 2026 |
| 1997 | COBB | Gregg County, TX | Oil & Gas Property | Feb 2026 |
| 1998 | COBB | Smith County, TX | Oil & Gas Property | Feb 2026 |
| 1999 | COBB | Gray County, TX | Oil & Gas Property | Feb 2026 |
| 2000 | COBB | Gray County, TX | Gas Property | Feb 2026 |