Scope of Modeling of Deep Geothermal Systems in an IEA Cooperative Programme

Abstract

The large ~mands to exploitation of reep geothermal resources are recognized not only in Japan but also in several geothermal countries in the world, because the expansion ofexploitation to deeper reservoirs would promise a greater resource base. The initiation of the lEA Task, Deep Geothermal Resources, is timely for this worldwide demands. There still remain technological and economic risks to utilize the deep geothermal resources and therefore it is worthy to forward this frontier collecting wortdwi~ wismm and experience. Modeling of deep geothermal systems has only recently come to be enabled when many drillholes have penetrated young plutonic bodies, that is, consolidtted magma chambers as a core of geothermal systems. Modeling of magma-wall rock interactions could be one of important subjects for the better understanding of deep heat sources, deep reservoirs and deep fluids in the lEA Task, Deep Geothermal Resources.