Experimental approach to hydrothermally derived fracturing of granitic rock for enhanced geothermal reservoir systems

N. Hirano, A. Minakawa, G. Bignall, N. Yamasaki, N. Tsuchiya, K. Nakatsuka

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

The fracturing of granite and single crystal quartz at sub- and supercritical hydrothermal conditions was investigated in order to advance the utilization 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 the experiments, fracturing was accelerated in the presence of water. Optimal conditions for hydrothermally-derived fracturing (HDF) of granite are proposed. HDF is expressed in terms of physico-chemical fracturing under hydrothermal conditions.

Original languageEnglish
Title of host publicationAnnu. Geotherm. Resources Counc. Mtg. (Reno, NV, 9/22-25/2002) Trans.
Pages285-288
Number of pages4
Publication statusPublished - 2002 Dec 1
Externally publishedYes

Publication series

NameAnnu. Geotherm. Resources Counc. Mtg. (Reno, NV, 9/22-25/2002) Trans.
Volume26
ISSN (Print)0193-5933

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

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