Enhanced Geothermal System

An Enhanced Geothermal System (EGS) is the process to generate electricity through "hydraulic stimulation". The geothermal power sources are stored as heat in hot fractured volcanic.

First of all, the EGS reservoir procedure will begin with identifying a geologic model of a potential site. The production area and the necessary properties like mechanical properties, the temperature gradient, and flow to extract the energy. The location should suitable for the geothermal reservoirs. 

Secondly, the majority of experienced geothermal drilling is to create a fracture network by injecting water at sufficient pressure or temperature differential. The hot water is pumped to the surface through the production well.

Lastly, the production well is carried the steam up to the surface from the bottom hole for driving a turbine, which in turn powers a generator for producing electricity.


Figure 3. illustrated schematic of another conceptual three-wells Enhanced Geothermal System (EGS) diagram modified from ANU Hot Rock Energy website.