In-situ hydraulic fracturing experiment at Mizunami URL and examination of AE source mechanism

Fujito, Wataru*; Yamashita, Hiroto*; Ziad, B.*; Naoi, Makoto*; Ishida, Tsuyoshi*; Fujii, Hirokazu*; Suzuki, Kenichiro*; Matsui, Hiroya

no journal, , 

For utilization a geothermal energy and mining of a shale gas, hydrofracturing technology become important. In this study, in-situ hydraulic fracturing experiment and AE measurement at Mizunami URL was carried out to examine a break mechanism by hydraulic fracturing. The results suggested that AE with shear mechanism at first breakdown is dominated and AE with tension mechanism is generated at new fracturing.