Experimental approach for decompression drilling in high temperature geothermal conditions

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

We propose a new concept of the engineered geothermal development where reservoirs are created in ductile basement. In order to utilize ductile zone in great depth, it is necessary to develop new drilling technology. Hydrothermal brecciation were formed by explosive failure without any chemical reactions such as dissolution and precipitate, and hydrothermal brecciation could be occurred under high temperature condition involving ductile regimes in nature. Hydrothermal experiments for artificial fracturing was carried out by using visible type autoclave. Explosive failure could be occurred under relatively low pressure and high temperature difference between solid sample and injected fluid. According to hydrothermal experiments, phase transition from liquid to vapor (in other words, 'boiling') produced latent heat of evaporation, which is main reason for creating tensile fracture by thermal stress. Based on field observation and hydrothermal experiments, we could propose conceptual idea of decompression drilling technology for developing ductile rock mass.

本文言語English
ホスト出版物のタイトルGeothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal
ホスト出版物のサブタイトルReliable, Renewable, Global
ページ561-564
ページ数4
出版ステータスPublished - 2012 12 1
イベントGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012 - Reno, NV, United States
継続期間: 2012 9 302012 10 3

出版物シリーズ

名前Transactions - Geothermal Resources Council
36 1
ISSN(印刷版)0193-5933

Other

OtherGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012
CountryUnited States
CityReno, NV
Period12/9/3012/10/3

ASJC Scopus subject areas

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

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