| 8901 | COSENS | Tuscola County, MI | Oil Property | Jul 2025 |
| 8902 | COSEY | Caldwell County, TX | Oil & Gas Property | Sep 2025 |
| 8903 | COSGRAY | Greene County, PA | Gas Property | Sep 2025 |
| 8904 | COSGROVE | Coal County, OK | Gas Property | Aug 2025 |
| 8905 | COSGROVE | Seward County, KS | Oil & Gas Property | Mar 2025 |
| 8906 | COSH MILL CREEK A-1 | Coshocton County, OH | Oil & Gas Property | Jun 2025 |
| 8907 | COSHOCTON COUNTY AIRPORT AUTHORITY | Coshocton County, OH | Oil & Gas Property | Dec 2024 |
| 8908 | COSMED UNIT ZAV | Zavala County, TX | Oil & Gas Property | Sep 2025 |
| 8909 | COSMO 1 | Duchesne County, UT | Oil & Gas Property | Oct 2025 |
| 8910 | COSMO 8 STATE | Lea County, NM | Oil & Gas Property | Oct 2025 |
| 8911 | COSMO DALTEX UNIT 45-4 | Reeves County, TX | Oil & Gas Property | Sep 2025 |
| 8912 | COSMO K 24S35E3328 FEE | Lea County, NM | Oil & Gas Property | Sep 2025 |
| 8913 | COSMONAUT | Fort Bend County, TX | Oil & Gas Property | Sep 2025 |
| 8914 | COSNER | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 8915 | COSNER | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 8916 | COSNER | Susquehanna County, PA | Gas Property | Sep 2025 |
| 8917 | COSNER 11S | Campbell County, WY | Gas Property | Aug 2009 |
| 8918 | COSPER | Midland County, TX | Oil & Gas Property | Sep 2025 |
| 8919 | COSPER | Coal County, OK | Gas Property | Aug 2025 |
| 8920 | COSS | Mercer County, PA | Gas Property | Dec 2024 |
| 8921 | COSSATOT | Lea County, NM | Oil & Gas Property | Sep 2025 |
| 8922 | COSSEY | Caddo County, OK | Oil Property | Nov 2024 |
| 8923 | COSSEY #1-9 | Caddo County, OK | Oil & Gas Property | Aug 2025 |
| 8924 | COSSLER, HOMER | Daviess County, KY | Oil Property | Nov 2022 |
| 8925 | COSSLETT | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 8926 | COSSLETT | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 8927 | COSSLETT EAST FEDERAL 1A-22H-H168 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 8928 | COSSLETT HEIRS UU | Weld County, CO | Oil & Gas Property | Apr 2019 |
| 8929 | COSSON | Freestone County, TX | Oil & Gas Property | Sep 2025 |
| 8930 | COSSON GAS UNIT | Freestone County, TX | Oil & Gas Property | Sep 2025 |
| 8931 | COSTA | San Mateo County, CA | Oil & Gas Property | Dec 2014 |
| 8932 | COSTANZA | Howard County, TX | Oil & Gas Property | Sep 2025 |
| 8933 | COSTANZO | Dickens County, TX | Oil & Gas Property | Sep 2025 |
| 8934 | COSTANZO | Summit County, OH | Oil & Gas Property | Dec 1994 |
| 8935 | COSTANZO UNIT | Washington County, PA | Oil & Gas Property | Sep 2025 |
| 8936 | COSTELLO | Palo Pinto County, TX | Oil & Gas Property | Sep 2025 |
| 8937 | COSTELLO | Carter County, OK | Oil Property | Feb 2025 |
| 8938 | COSTELLO 16 | Potter County, PA | Gas Property | Dec 2000 |
| 8939 | COSTELLO 1H-30 | Hughes County, OK | Gas Property | Aug 2025 |
| 8940 | COSTELLO 2 | Coal County, OK | Gas Property | Sep 2025 |
| 8941 | COSTEN | Allegan County, MI | Oil Property | Aug 2025 |
| 8942 | COSTIGAN | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 8943 | COSTILLA MABEE | Andrews County, TX | Oil & Gas Property | Sep 2025 |
| 8944 | COSTILOW | Latimer County, OK | Gas Property | Aug 2025 |
| 8945 | COSTILOW, DONALD L | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 8946 | COSTILOW, EARNEST | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 8947 | COSTLOW | Dewitt County, TX | Oil & Gas Property | Sep 2025 |
| 8948 | COT EAST | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 8949 | COT WEST | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 8950 | COTCHA | Seminole County, OK | Oil Property | Aug 2025 |
| 8951 | COTHAM | Payne County, OK | Oil & Gas Property | Aug 2025 |
| 8952 | COTHERN 1 | Logan County, OK | Oil & Gas Property | May 2025 |
| 8953 | COTHES | Andrews County, TX | Oil & Gas Property | Sep 2025 |
| 8954 | COTHREN UNIT | Wise County, TX | Oil & Gas Property | Sep 2025 |
| 8955 | COTIGA DEV | Mingo County, WV | Oil & Gas Property | Dec 2021 |
| 8956 | COTIGA DEV. CO | Mingo County, WV | Gas Property | Dec 2021 |
| 8957 | COTIGA DEVEL | Mingo County, WV | Oil & Gas Property | Dec 2021 |
| 8958 | COTIGA DEVELOPMENT C | Mingo County, WV | Gas Property | Nov 2008 |
| 8959 | COTIGA DEVELOPMENT CO | Mingo County, WV | Gas Property | Dec 2021 |
| 8960 | COTIGA LIMITED PART | Mingo County, WV | Oil & Gas Property | Dec 2021 |
| 8961 | COTIGA LTD P | Mingo County, WV | Oil & Gas Property | Dec 2021 |
| 8962 | COTINGA | Custer County, OK | Oil & Gas Property | Sep 2025 |
| 8963 | COTNER | Grady County, OK | Oil & Gas Property | Aug 2025 |
| 8964 | COTNER 35-14 | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 8965 | COTRONE-JEWISH WELFARE UNIT | Burleson County, TX | Oil & Gas Property | Aug 2025 |
| 8966 | COTROPIA-FERRARA UNIT | Robertson County, TX | Oil & Gas Property | Aug 2025 |
| 8967 | COTROPIA-FRAZIER UNIT | Robertson County, TX | Oil & Gas Property | Aug 2025 |
| 8968 | COTROPIA-MCCRADY UNIT | Robertson County, TX | Oil & Gas Property | Aug 2025 |
| 8969 | COTROPIA-PERRONE UNIT | Robertson County, TX | Oil & Gas Property | Aug 2025 |
| 8970 | COTSWOLD | Bienville Parish, LA | Gas Property | Dec 2024 |
| 8971 | COTT | Marion County, KS | Gas Property | Nov 2023 |
| 8972 | COTT | Stevens County, KS | Gas Property | Jun 2025 |
| 8973 | COTTEN | Glasscock County, TX | Oil & Gas Property | Mar 2019 |
| 8974 | COTTER 1 | Barton County, KS | Oil Property | May 2025 |
| 8975 | COTTER 2015 | Major County, OK | Oil & Gas Property | Sep 2025 |
| 8976 | COTTER G | Hansford County, TX | Oil & Gas Property | Mar 2017 |
| 8977 | COTTERILL | Montgomery County, KS | Oil & Gas Property | Jun 2025 |
| 8978 | COTTERMAN | Ashtabula County, OH | Oil & Gas Property | Dec 2017 |
| 8979 | COTTERMAN | Perry County, OH | Oil & Gas Property | Dec 2024 |
| 8980 | COTTERMAN | Perry County, OH | Oil & Gas Property | Dec 1988 |
| 8981 | COTTERMAN | Perry County, OH | Oil & Gas Property | Dec 2024 |
| 8982 | COTTINGHAM | Union County, KY | Oil Property | Dec 2022 |
| 8983 | COTTINGHAM | Webster County, KY | Oil Property | Dec 2023 |
| 8984 | COTTINGHAM | Henderson County, KY | Oil Property | Dec 2014 |
| 8985 | COTTLE | Shackelford County, TX | Oil & Gas Property | Sep 2025 |
| 8986 | COTTLE 5892 21-30 | Mountrail County, ND | Oil & Gas Property | Oct 2025 |
| 8987 | COTTLE-REEVES UNIT | Panola County, TX | Oil & Gas Property | Aug 2025 |
| 8988 | COTTMAN | Kay County, OK | Oil & Gas Property | Apr 2019 |
| 8989 | COTTOM | Major County, OK | Oil & Gas Property | Aug 2025 |
| 8990 | COTTOM | Wichita County, TX | Oil & Gas Property | Jun 2025 |
| 8991 | COTTON | Roger Mills County, OK | Oil & Gas Property | Aug 2025 |
| 8992 | COTTON | Weston County, WY | Oil Property | Aug 2022 |
| 8993 | COTTON | Eastland County, TX | Oil & Gas Property | Aug 2015 |
| 8994 | COTTON | Garvin County, OK | Oil & Gas Property | Aug 2025 |
| 8995 | COTTON | Trego County, KS | Oil Property | Jun 2018 |
| 8996 | COTTON | Terry County, TX | Oil & Gas Property | Sep 2025 |
| 8997 | COTTON | Trego County, KS | Oil Property | May 2025 |
| 8998 | COTTON | Creek County, OK | Oil & Gas Property | Sep 2025 |
| 8999 | COTTON | Okmulgee County, OK | Oil Property | Jun 2009 |
| 9000 | COTTON | Seward County, KS | Oil & Gas Property | Jun 2025 |