TY - JOUR
T1 - Experimental Approach to Hydrothermally Derived Fracturing of Granitic Rock for Enhanced Geothermal Reservoir Systems
AU - Hirano, N.
AU - Minakawa, A.
AU - Bignall, G.
AU - Yamasaki, N.
AU - Tsuchiya, N.
AU - Nakatsuka, K.
PY - 2002/12/1
Y1 - 2002/12/1
N2 - The fracturing of granite and single crystal quartz at sub- and supercritical hydrothermal conditions was investigated in order to advance the utilisation of Enhanced Geothermal (reservoir) Systems (EGS). No changes (i.e. fracturing) were observed at "dry" conditions, for both granite and single crystal quartz (at any temperature-pressure conditions), but fracturing was recognized in "wet" conditions. In our experiments, fracturing was accelerated in the presence of water, and we propose optimal conditions for Hydrothermally-Derived Fracturing (HDF) of granite. Hydrothermally-Derived Fracturing (HDF) can be utilized for future development of Enhanced Geothermal (reservoir) Systems (EGS), by which fluid flow pass and heat exchange in the deep-seated hydrothermal reservoir is drastically enhanced by utilizing HDF.
AB - The fracturing of granite and single crystal quartz at sub- and supercritical hydrothermal conditions was investigated in order to advance the utilisation of Enhanced Geothermal (reservoir) Systems (EGS). No changes (i.e. fracturing) were observed at "dry" conditions, for both granite and single crystal quartz (at any temperature-pressure conditions), but fracturing was recognized in "wet" conditions. In our experiments, fracturing was accelerated in the presence of water, and we propose optimal conditions for Hydrothermally-Derived Fracturing (HDF) of granite. Hydrothermally-Derived Fracturing (HDF) can be utilized for future development of Enhanced Geothermal (reservoir) Systems (EGS), by which fluid flow pass and heat exchange in the deep-seated hydrothermal reservoir is drastically enhanced by utilizing HDF.
KW - Enhanced Geothermal System (EGS)
KW - Fracture
KW - Granite
KW - Hydrothermally-Derived Fracturing (HDF)
KW - Quartz
KW - Supercritical water
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M3 - Conference article
AN - SCOPUS:0242409875
SP - 285
EP - 288
JO - Transactions - Geothermal Resources Council
JF - Transactions - Geothermal Resources Council
SN - 0193-5933
T2 - Geothermal Resources Council: 2002 Annual Meeting
Y2 - 22 September 2002 through 25 September 2002
ER -
