Recent Hot Dry Rock Research Project at Yakedake Area

Abstract

The feasibility study of HDR system in Japan started at 1974 under Sunshine-Project. Field tests have been made at Yakedake Area in middle Japan since 1977, contributing to improve some techniques such as Hydraulic-Fracturing, Fracture-Mapping and so on. This paper presents details of the recent HDR project up to 1982 at Yakedake.