Geological and engineering features of developing ultra-high-temperature geothermal systems in the world

Kyosuke Okamoto, Hiroshi Asanuma, Takuya Ishibashi, Yusuke Yamaya, H. Saishu, N. Yanagisawa, Toru Mogi, Noriyoshi Tsuchiya, Atsushi Okamoto, Shigemi Naganawa, Y. Ogawa, Kazuya Ishitsuka, Yasuhiro Fujimitsu, K. Kitamura, Tatsuya Kajiwara, S. Horimoto, Kuniaki Shimada

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Abstract

It has been suggested that a large amount of crustal fluid is trapped at a supercritical state within intrusive rocks beneath volcanoes or calderas near the mountain ranges of northeastern Japan. If we could extract and use these crustal fluids, we could expect to achieve a high level of energy productivity. We have collated field data on high-temperature geothermal areas of the world, used these to produce simple models of their geothermal systems, and then explored their features in terms of the amount of potential power generation. For example, a potential of around 0.1 GW per reservoir over 30 years is expected in northeastern Japan if we consider supercritical reservoirs extending to a 5 km depth.

Original languageEnglish
Pages (from-to)267-281
Number of pages15
JournalGeothermics
Volume82
DOIs
Publication statusPublished - Nov 2019

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

Okamoto, K., Asanuma, H., Ishibashi, T., Yamaya, Y., Saishu, H., Yanagisawa, N., ... Shimada, K. (2019). Geological and engineering features of developing ultra-high-temperature geothermal systems in the world. Geothermics, 82, 267-281. https://doi.org/10.1016/j.geothermics.2019.07.002