Coupling geothermal energy capture with carbon dioxide sequestration in naturally permeable, porous geologic formations -- a novel approach for expanding geothermal energy utilization.

Randolph, Jimmy Bryan2011-10-052011-10-052011-08https://hdl.handle.net/11299/116297University of Minnesota Ph.D. dissertation. August 2011. Major: Geophysics. Advisor: Martin O. Saar. 1 computer file (PDF); xii, 211 pages, appendices A-F.This thesis research presents a new method to harness geothermal energy by combining it with geologic carbon dioxide (CO2) sequestration. CO2 is injected into deep, naturally porous and permeable geologic formations. The geothermally heated CO2 is piped to the surface, used to produce electricity, and then returned to the subsurface. This new approach represents a radical shift in electric/heat power generation as it not only utilizes a renewable energy source but has a negative carbon footprint. This research explores the potential and applicability of the approach and related aspects of geologic fluid and heat flow.en-USCarbon DioxideCO2 Plume Geothermal (CPG)Geothermal energySequestrationGeophysicsCoupling geothermal energy capture with carbon dioxide sequestration in naturally permeable, porous geologic formations -- a novel approach for expanding geothermal energy utilization.Thesis or Dissertation