eprintid: 9697
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/96/97
datestamp: 2023-11-09 16:36:20
lastmod: 2023-11-09 16:36:20
status_changed: 2023-11-09 16:29:36
type: conference_item
metadata_visibility: show
creators_name: Cheng, S.W.Y.
creators_name: Kurnia, J.C.
creators_name: Isa, M.S.M.
creators_name: Ashraf, S.
title: Numerical investigation on the heat transfer of wellbore heat extractor
ispublished: pub
note: cited By 1; Conference of 6th International Conference on Production, Energy and Reliability, ICPER 2018 ; Conference Date: 13 August 2018 Through 14 August 2018; Conference Code:141991
abstract: Retrofitting depleted oil wells into geothermal wells can potentially solve the main issues in conventional geothermal wells: high capital costs for drilling geothermal wells and high risk of environmental consequences. For this application, the understanding of the temperature change is crucial as it affects the performance of the wellbore heat exchanger and the power generated from this well. Therefore, the current study is focused on the evaluation of oil wellbore's feasibility as a geothermal energy resource via investigating the heat transfer in the wellbore using computational fluid dynamic (CFD) approach based on actual measured thermal parameters of cement specimen. A two-dimensional axis-symmetry model for fluid flow and heat transfer in a wellbore is developed. The properties of the cement casing were obtained experimentally. The effect of downhole temperatures and velocities of the heat transfer fluid (oil) on the heat transfer and temperature distribution is evaluated and discussed in view of numerical results. The results revealed that the downhole velocity and temperature plays an insignificant role in affecting the cement outer wall temperature, justifying that the heat transfer within the wellbore is consistent. This indicates the potential of oil wellbores as sustainable geothermal energy resources. This study serves as a guideline for future researchers to design wellbore heat exchangers from depleted oil wells by highlighting the temperature distribution of the cement outer wall and the effects of downhole velocity and temperature. © 2018 Author(s).
date: 2018
publisher: American Institute of Physics Inc.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057323524&doi=10.1063%2f1.5075554&partnerID=40&md5=bddd5fa77985c2503852f672ef4bdaec
id_number: 10.1063/1.5075554
full_text_status: none
publication: AIP Conference Proceedings
volume: 2035
refereed: TRUE
isbn: 9780735417618
issn: 0094243X
citation:   Cheng, S.W.Y. and Kurnia, J.C. and Isa, M.S.M. and Ashraf, S.  (2018) Numerical investigation on the heat transfer of wellbore heat extractor.  In: UNSPECIFIED.