Abstract
H. Muraoka1, H. Asanuma2, N. Tsuchiya3, T. Ito4, T. Mogi5, H. Ito6, and the participants of the ICDP/JBBP Workshop 1North Japan Research Institute for Sustainable Energy, Hirosaki University, Matsubara 2-1-3, Aomori 030-0813, Japan 2Renewable Energy Research Center, AIST, Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan 3Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Miyagi 980-8579, Japan 4Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan 5Graduate School of Sciences, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan 6Independent scientist, Japan
Highlights
The international workshop “Japan Beyond-Brittle Project, JBBP – Scientific drilling to demonstrate the feasibility of engineered geothermal systems in ductile zones” was held at the Graduate School of Engineering, Tohoku University, Sendai, Japan, during 12–16 March 2013
Previous Japanese hot dry rock (HDR) projects showed that water recovery from an engineered geothermal system (EGS) reservoir in a fracture-rich tectonic belt in Japan is at best 50 % (Tenma et al, 2004; Kaieda et al, 2005)
The occurrence of felt earthquakes from the EGS reservoirs (Majer et al, 2007; Häring et al, 2008) introduces additional environmental burdens and risks. These problems in the development of hydrothermal and EGS reservoirs cannot be readily solved in Japan because they are intrinsically related to the physical characteristics and tectonic setting of the brittle rock mass
Summary
The international workshop “Japan Beyond-Brittle Project, JBBP – Scientific drilling to demonstrate the feasibility of engineered geothermal systems in ductile zones” was held at the Graduate School of Engineering, Tohoku University, Sendai, Japan, during 12–16 March 2013. The workshop was cosponsored by the ICDP (International Continental Scientific Drilling Program) and Tohoku University GCOE (Global Center Of Excellence) Project. A total of 102 people attended the workshop and 98 presentations were made (75 oral, 23 poster)
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