Carbon dioxide-based geothermal energy generation systems and methods related thereto

摘要

A system comprises an injection well for accessing a reservoir containing a native fluid comprising a hydrocarbon. The reservoir is located below one or more caprocks, is at a first temperature, and is accessible without using large-scale hydrofracturing. The system further includes a production well in fluid communication with the reservoir, a supply apparatus configured to feed a non-water based working fluid at a second temperature that is lower than the first temperature through the injection well to the reservoir. The working fluid mixes with the native fluid to form a production fluid comprising at least a portion of the working fluid and at least a portion of the hydrocarbon at a third temperature that is higher than the second temperature. An energy recovery apparatus in fluid communication with the productions well converts energy contained in the production fluid to electricity, heat, or combinations thereof.

主权项

1. A system comprising:
one or more injection wells for accessing an underground reservoir containing at least one native fluid comprising at least one hydrocarbon, each of the one or more injection wells having an injection well reservoir opening in fluid communication with the reservoir, wherein the reservoir is located below one or more caprocks, is at a first temperature, and is accessible without using large-scale hydrofracturing; one or more production wells, each having a production well reservoir opening in fluid communication with the reservoir; a non-water based working fluid supply apparatus configured to feed a non-water based working fluid at a second temperature that is lower than the first temperature through the one or more injection wells to the reservoir, wherein the non-water based working fluid mixes with the native fluid to form a production fluid comprising at least a portion of the non-water based working fluid and at least a portion of the at least one hydrocarbon at a third temperature that is higher than the second temperature, wherein the production fluid is capable of entering the one or more production well reservoir openings; and an energy recovery apparatus in fluid communication with the one or more productions wells, wherein the energy recovery apparatus is configured to convert thermal energy contained in the production fluid to electricity, heat, or combinations thereof.