Distributed thermal response test to analyze thermal properties in heterogeneous lithology

Adam McDaniel, James Tinjum, David J. Hart, Yu Feng Lin, Andrew Stumpf, Lauren Thomas

Research output: Contribution to journalArticle

Abstract

A fiber optic distributed thermal response test (DTRT) conducted in well-documented heterogeneous geology is combined with laboratory thermophysical measurements of cores and novel data analysis techniques to provide a detailed description of variability in subsurface heat transfer. The results of this study show that appreciable variation in subsurface heat flow exists and can be quantified in a lithological context, which may aid in the optimization of future geothermal borefield design. District-scale borefields that are expected to contend with imbalanced loads and potential overheating may find additional value from knowledge of which geologic units to utilize and which to avoid.

Original languageEnglish (US)
Pages (from-to)116-124
Number of pages9
JournalGeothermics
Volume76
DOIs
StatePublished - Nov 2018

Keywords

  • Distributed temperature sensing
  • Fiber
  • Heterogeneous geology
  • Optics
  • Thermal conductivity
  • Thermal response test

ASJC Scopus subject areas

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

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