Stress Field and Formation of Fracture Network in the Solidified Magma Region for the Direct Utilization of Magma Energy
- Key words
- magma energy, open system, stress field, fracture network
- Conference
- World Geothermal Congress
- Year
- 1995
- Session
- SECTION 12 - Advanced Technologies (HDR - Magma - Geopressur
- Language
- English
- Paper number
- 4-Hayashi
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Abstract
In the extraction of thermal energy from magma, it is expected that a fracture network would be created due to thermal contraction of the solidified magma formed around the wellbore during heat extraction and the fracture network is expected to work as the flow path of the working fluid for the heat extraction. In the present paper the stress field in the solidified magma and its variation with respect to time were analyzed based on the creep theory, emphasizing the feasibility of formation of the fracture network for a various types of rocks.
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