Numerical thermo-elastic simulation for change in fracture aperture associated with cold fluid injection

研究成果: Conference contribution

抄録

We analyzed the effect of thermal contraction of rock on fracture permeability. The analysis was carried out by using a 2D FEM code which can treat the coupled problem of fluid flow in fractures, elastic and thermal deformation of rock and heat transfer. We assumed a single fracture in a high-temperature rock mass subjected to a uniform confining stresses. Under the conditions, low-temperature fluid was injected into the fracture. The results of simulation showed that even under confining environment, the considerable increase in fracture permeability appeared due to thermal deformation of rock, which should be caused by the difference between the initial temperature of rock and the fluid temperature. However, for the increase of fracture permeability, the temperature difference was necessary to be larger than a critical value, and the critical value increased with the magnitude of confining stress.

本文言語English
ホスト出版物のタイトルGeothermal Resources Council Annual Meeting, GRC 2014 - Geothermal
ホスト出版物のサブタイトルA Global Solution
出版社Geothermal Resources Council
ページ301-304
ページ数4
ISBN(電子版)9781634394673
出版ステータスPublished - 2014 1 1
イベントGeothermal Resources Council Annual Meeting - Geothermal: A Global Solution, GRC 2014 - Portland, United States
継続期間: 2014 9 282014 10 1

出版物シリーズ

名前Transactions - Geothermal Resources Council
38
ISSN(印刷版)0193-5933

Other

OtherGeothermal Resources Council Annual Meeting - Geothermal: A Global Solution, GRC 2014
CountryUnited States
CityPortland
Period14/9/2814/10/1

ASJC Scopus subject areas

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

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