Abstract
We developed a supercritical geothermal reservoir creation simulator that uses a simple 3D model. The simulator was based on an increase in permeability caused by hydraulic fracturing as confirmed in a laboratory experiment. The simulator does not simulate the fracture behavior in rocks; instead, the fracturing phenomenon is expressed as a rapid change in permeability. In this study, we evaluated rock mechanics such that changes in crustal stress associated with changes in pore pressure could be considered. Using the developed simulator, a simulation was performed for the creation of a reservoir using hydraulic fracturing. The results showed that a target artificial reservoir with a radius of hundreds of meters could be formed through hydraulic fracturing. Furthermore, the state of the initial crust stress had a major impact on reservoir creation.
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