Wellbore heat transfer in CO2-based geothermal systems

Jimmy B Randolph, Benjamin Adams, Thomas H. Kuehn, Martin O. Saar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

Geothermal systems utilizing carbon dioxide as the subsurface heat exchange fluid in naturally porous, permeable geologic formations have been shown to provide improved geothermal heat energy extraction, even at low resource temperatures, compared to conventional hydrothermal and enhanced geothermal systems (EGS). Such systems, termed CO2 Plume Geothermal (CPG), have the potential to permit expansion of geothermal energy use while supporting rapid implementation. While most previous analyses have focused on heat transfer in the reservoir and surface components of CO2-based geothermal operations, here we examine wellbore heat transfer. In particular, we explore the hypothesis that wellbore flow can be assumed to be adiabatic for the majority of a CPG facility's lifespan.

Original languageEnglish (US)
Title of host publicationGeothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal
Subtitle of host publicationReliable, Renewable, Global
Pages549-554
Number of pages6
StatePublished - Dec 1 2012
EventGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012 - Reno, NV, United States
Duration: Sep 30 2012Oct 3 2012

Publication series

NameTransactions - Geothermal Resources Council
Volume36 1
ISSN (Print)0193-5933

Other

OtherGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012
CountryUnited States
CityReno, NV
Period9/30/1210/3/12

Keywords

  • CO Plume Geothermal
  • CPG
  • Carbon dioxide sequestration
  • EGS
  • Geothermal
  • Heat transfer
  • Numerical simulation

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