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How is the geothermal reservoir established in EGS?


Water flow through the geothermal reservoir is the mechanism by which heat is transferred from the subsurface geology to the surface. Water flow within the reservoir will result from permeability along bedding planes, fractures or via natural porosity of the host rock. The natural permeability of the geothermal reservoir can be increased by opening existing bedding planes and fractures and by creating new fractures. Reservoir engineering is achieved when high pressure water is pumped into the reservoir, and the rock induced to shear failure - a process known as hydraulic stimulation.

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