Heat Flux on the Bore-Face and Temperature Distribution in the Formation

Sergei Fomin, Vladimir Chugunov, Toshiyuki Hashida, Seiji Saito, Yuko Suto

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

The temperature field in the formation disturbed by the heat flow from the borehole is modeled by the heat conduction equation and thermal interaction of the circulating fluid with formation is approximated by the Newton relationship on the boreface. The problem is solved analytically by the heat balance integral method, where the radius of thermal influence is determined implicitly by the algebraic equation. On the basis of this solution a new approximate formulae for the heat flux on the bore-face and temperature in the formation are proposed. The solution accounts for the thermal history of the formation temperature and possible axial variation of generally unsteady temperature in the borehole. The correctness of the approximate solution is validated by comparison with an exact analytical solution found by Carslaw and Jaeger.

Original languageEnglish
Pages (from-to)803-807
Number of pages5
JournalTransactions - Geothermal Resources Council
Publication statusPublished - 2002 Dec 1
EventGeothermal Resources Council: 2002 Annual Meeting - Reno, NV, United States
Duration: 2002 Sep 222002 Sep 25

Keywords

  • Approximate solution
  • Bore-face
  • Borehole
  • Heat flux
  • Temperature field

ASJC Scopus subject areas

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

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