The influence of heat flux and upflow interaction in geothermal reservoir simulation

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

Abstract

Assigning heat sources to a numerical model of a geothermal reservoir for the simulation is a quite challenging task not only because of its challenge to assign proper intensity of heat flux, the proper value of enthalpy and flow rate of the upflow, but also because of their correct assignments to the reservoir model. This paper presents how the assignment of heat flux and upflow to the reservoir model layers will influence the simulation result. The simulation was carried out under three types of cases for evaluating the influence of enthalpy-heat flux intensity difference. In case 1, a high enthalpysmall heat flux combination was used, whereas in case 2 and case 3, medium-medium and lowhigh combinations were used, respectively. In model 1, heat flux was assigned to the bottom layer, and upflow was assigned to the second bottom layer. In model 2, both heat flux and upflow were assigned to the second bottom layer. In model 3, both heat flux and upflow were assigned to the bottom layer. The result shows reservoir simulation is not influenced by whether upflow and heat flow are assigned to the same layer or separated. When the upflow carries high enthalpy fluid, the distance from the origin of upflow will influence temperature and pressure distribution. The existence of high permeable faults and low-temperature cold recharge does not interfere with the converging process of two types of heat sources.

Original languageEnglish
Title of host publicationUsing the Earth to Save the Earth - 2021 Geothermal Rising Conference, GRC 2021
PublisherGeothermal Resources Council
Pages1902-1917
Number of pages16
ISBN (Electronic)0934412278
Publication statusPublished - 2021
Event2021 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2021 - San Diego, United States
Duration: Oct 3 2021Oct 6 2021

Publication series

NameTransactions - Geothermal Resources Council
Volume45
ISSN (Print)0193-5933

Conference

Conference2021 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2021
Country/TerritoryUnited States
CitySan Diego
Period10/3/2110/6/21

All Science Journal Classification (ASJC) codes

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

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