A theoretical approach for estimating the surface area of a rough-walled fracture from well logging

Satoshi Akibayashi, Kyuro Sasaki, Fumio Sugimoto, Shinji Yamaguchi, Kunsoo Kim

研究成果: ジャーナルへの寄稿記事

抄録

A theoretical approach is presented to estimate the surface area of a rough-walled fracture artificially induced in the hot dry rock. In this approach the concept of parallel-plate model, average fracture aperture obtained from the injection test and by the borehole televiewer, are used. This approach has the advantage of using the permeability value obtained from well injection test and the average aperture size of fracture at the borehole wall observed by the borehole televiewer. Flow, energy and mass equations which involve the effect of fracture surface area (A) are solved numerically by the finite difference method. The results show that as A increases the dissolution and precipitation rates of silica increase. The relative error for silica production rate due to round off the value of t-2/12K is about 10%, 800 days after injecting water through the injection well.

元の言語英語
ページ(範囲)538
ページ数1
ジャーナルInternational Journal of Rock Mechanics and Minings Sciences
34
発行部数3-4
DOI
出版物ステータス出版済み - 4 1997

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Well logging
well logging
borehole
surface area
Boreholes
silica
Silicon Dioxide
hot dry rock
fracture aperture
Silica
energy flow
finite difference method
dissolution
Finite difference method
permeability
well
Dissolution
Rocks
Water
water

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

これを引用

A theoretical approach for estimating the surface area of a rough-walled fracture from well logging. / Akibayashi, Satoshi; Sasaki, Kyuro; Sugimoto, Fumio; Yamaguchi, Shinji; Kim, Kunsoo.

:: International Journal of Rock Mechanics and Minings Sciences, 巻 34, 番号 3-4, 04.1997, p. 538.

研究成果: ジャーナルへの寄稿記事

Akibayashi, Satoshi ; Sasaki, Kyuro ; Sugimoto, Fumio ; Yamaguchi, Shinji ; Kim, Kunsoo. / A theoretical approach for estimating the surface area of a rough-walled fracture from well logging. :: International Journal of Rock Mechanics and Minings Sciences. 1997 ; 巻 34, 番号 3-4. pp. 538.
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