| 901 | COSNER | Campbell County, WY | Oil & Gas Property | Feb 2026 |
| 902 | COSNER 11S | Campbell County, WY | Gas Property | Aug 2009 |
| 903 | COTTON | Weston County, WY | Oil Property | Aug 2022 |
| 904 | COTTONWOOD | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 905 | COTTONWOOD | Sublette County, WY | Oil & Gas Property | Dec 2025 |
| 906 | COTTONWOOD | Washakie County, WY | Oil & Gas Property | Jan 2026 |
| 907 | COTTONWOOD | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 908 | COTTONWOOD CREEK UN | Washakie County, WY | Oil & Gas Property | Feb 2024 |
| 909 | COTTONWOOD DR | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 910 | COUGAR | Laramie County, WY | Oil & Gas Property | Jan 2026 |
| 911 | COUGHLAN | Niobrara County, WY | Oil Property | Aug 1997 |
| 912 | COUGHLIN | Albany County, WY | Oil & Gas Property | Dec 2025 |
| 913 | COUNTY LINE | Lincoln County, WY | Oil & Gas Property | Jan 2026 |
| 914 | COUSINS CS FEDERAL | Campbell County, WY | Gas Property | Jan 2015 |
| 915 | COUSINS FEDERAL COM 2 | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 916 | COW CREEK | Carbon County, WY | Oil & Gas Property | Dec 2025 |
| 917 | COW CREEK | Lincoln County, WY | Oil & Gas Property | Jan 2026 |
| 918 | COW HOLLOW | Lincoln County, WY | Oil & Gas Property | Jan 2026 |
| 919 | COWBOY FED 3671-10 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 920 | COWGER | Weston County, WY | Oil & Gas Property | Jan 2026 |
| 921 | COWGIRL FED 3574-021 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 922 | COX-FEDERAL | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 923 | COYOTE DRAW FEDERAL 1H | Weston County, WY | Oil & Gas Property | Jan 2026 |
| 924 | COZZENS | Big Horn County, WY | Oil & Gas Property | Jan 2026 |
| 925 | CRARY | Converse County, WY | Oil Property | Jan 1985 |
| 926 | CRATER | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 927 | CRAVEN CREEK UNIT | Lincoln County, WY | Oil & Gas Property | Dec 2025 |
| 928 | CRAWFORD 1 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 929 | CRAWFORD DR | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 930 | CRAZY BUFFALO 2H | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 931 | CRAZY WOMAN FED | Johnson County, WY | Gas Property | Dec 2025 |
| 932 | CRESTA 4471-1819-1PH | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 933 | CRESTON | Carbon County, WY | Oil & Gas Property | Aug 2021 |
| 934 | CRESTON | Carbon County, WY | Oil & Gas Property | Dec 2025 |
| 935 | CRESTON | Carbon County, WY | Oil & Gas Property | Dec 2025 |
| 936 | CRESTON III UNIT | Carbon County, WY | Oil & Gas Property | Dec 2025 |
| 937 | CRESTON JUNCTION 1 | Sweetwater County, WY | Oil & Gas Property | Dec 2025 |
| 938 | CRESWELL | Campbell County, WY | Gas Property | May 2012 |
| 939 | CRICKET | Park County, WY | Oil & Gas Property | Jan 2026 |
| 940 | CRIMSON | Sublette County, WY | Oil & Gas Property | Jan 2026 |
| 941 | CROOKS GAP | Fremont County, WY | Oil & Gas Property | Jan 2026 |
| 942 | CROSBY 25 | Park County, WY | Oil & Gas Property | Jun 2018 |
| 943 | CROSS 1-9 | Fremont County, WY | Oil & Gas Property | Jan 2026 |
| 944 | CROSS 57-76-19 | Sheridan County, WY | Gas Property | Jun 2015 |
| 945 | CROSS GAS | Big Horn County, WY | Oil & Gas Property | Jan 2026 |
| 946 | CROSSBOW | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 947 | CROTALUS | Converse County, WY | Oil & Gas Property | Dec 2025 |
| 948 | CROW CREEK | Laramie County, WY | Oil & Gas Property | Jan 2026 |
| 949 | CROW UNIT | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 950 | CROW UNIT 3 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 951 | CROWE 2 | Natrona County, WY | Oil Property | Jan 2026 |
| 952 | CRU BRANNON-HARRIS A | Johnson County, WY | Oil Property | Jan 2026 |
| 953 | CRU CELLERS | Johnson County, WY | Oil Property | Jan 2026 |
| 954 | CRUDE CAT FEDERAL | Johnson County, WY | Oil & Gas Property | Jan 2026 |
| 955 | CRUMP | Campbell County, WY | Gas Property | Aug 2010 |
| 956 | CRUMP | Campbell County, WY | Gas Property | Oct 2017 |
| 957 | CRUMP FED | Campbell County, WY | Gas Property | Oct 2017 |
| 958 | CSFED 1 | Sweetwater County, WY | Oil & Gas Property | Jan 2026 |
| 959 | CTU-FEE | Weston County, WY | Oil & Gas Property | Aug 1997 |
| 960 | CU DOWNS FED | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 961 | CU DOWNS FED 28 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 962 | CU DOWNS FED 3 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 963 | CU REPP FED 09-213769-1XTPH | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 964 | CUB FE | Johnson County, WY | Oil & Gas Property | Jan 2026 |
| 965 | CULP DRAW | Johnson County, WY | Oil & Gas Property | Jan 2014 |
| 966 | CULP DRAW | Johnson County, WY | Oil & Gas Property | Jan 2026 |
| 967 | CUMMINGS | Uinta County, WY | Oil & Gas Property | Jan 2026 |
| 968 | CURIOSITY 0 | Sublette County, WY | Oil & Gas Property | Jan 2026 |
| 969 | CURRY FARMS 14-64-22 | Laramie County, WY | Oil & Gas Property | Feb 2026 |
| 970 | CURTIS | Hot Springs County, WY | Oil & Gas Property | Jan 2026 |
| 971 | CUSHING | Laramie County, WY | Oil & Gas Property | Jan 2026 |
| 972 | CUSTER | Park County, WY | Oil & Gas Property | Jan 2026 |
| 973 | CUSTER CS FEDERAL | Campbell County, WY | Gas Property | Apr 2017 |
| 974 | CUSTER FED 4271-5 | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 975 | CUTTBOW 29-20-2H | Campbell County, WY | Oil & Gas Property | Feb 2026 |
| 976 | CUTTHROAT 1324 | Campbell County, WY | Oil & Gas Property | Jan 2026 |
| 977 | CW 3568-36-25 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 978 | CWDU DILTS FED | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 979 | CWDU JRJ | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 980 | CWDU STEINLE FED 08-053870 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 981 | CWDU STODDARD FED 11-023871 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 982 | CWDU T-55 FED 06-313971 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 983 | CWDU T-55 FED 31-063871-3XPH | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 984 | CWDU TILLARD FED 19-073871 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 985 | CYNTHIA | Washakie County, WY | Oil Property | May 2025 |
| 986 | CYPHER CS FED | Campbell County, WY | Gas Property | Aug 2018 |
| 987 | CZAPLA | Campbell County, WY | Oil Property | Aug 1982 |
| 988 | D A EHRLICH | Hot Springs County, WY | Oil & Gas Property | Jan 2026 |
| 989 | D COSNER | Campbell County, WY | Gas Property | Jan 2012 |
| 990 | D COSNER FEDERAL | Campbell County, WY | Gas Property | Aug 2009 |
| 991 | D CROSS | Campbell County, WY | Gas Property | Apr 2012 |
| 992 | D DRAKE | Campbell County, WY | Gas Property | Oct 2014 |
| 993 | D FULLER FEDERAL 31W | Campbell County, WY | Gas Property | Dec 2008 |
| 994 | D MALLI FEDERAL | Sheridan County, WY | Gas Property | Nov 2010 |
| 995 | D ODEGARD | Campbell County, WY | Gas Property | Oct 2014 |
| 996 | D ODEGARD | Campbell County, WY | Gas Property | Oct 2012 |
| 997 | D SPELLMAN | Campbell County, WY | Gas Property | May 2017 |
| 998 | D WRIGHT 35W | Campbell County, WY | Gas Property | Aug 2009 |
| 999 | D&M ODEGARD FEDERAL | Campbell County, WY | Gas Property | Nov 2010 |
| 1000 | D. MALLI | Sheridan County, WY | Gas Property | Nov 2010 |