Patent ID: 8316955

Claim:
A system comprising: one or more injection wells for accessing one or more reservoirs having a first temperature, wherein the one or more reservoirs are located below one or more caprocks, each caprock having a permeability ranging from about 10 −16 m 2 to about zero (0) m 2 , wherein the one or more reservoirs are accessible without using large-scale hydrofracturing, each of the one or more injection wells having an injection well reservoir opening; one or more production wells, each having a production well reservoir opening, wherein a non-water based working fluid provided to the one or more injection wells at a second temperature lower than the first temperature and exposure of the non-water based working fluid to the first temperature produces heated non-water based working fluid capable of entering each of the one or more production well reservoir openings; and an energy converting apparatus connected to each of the one or more injection wells and the one or more productions wells, wherein thermal energy contained in the heated non-water based working fluid is converted to electricity, heat, or combinations thereof, in the energy converting apparatus.