Subsurface methane leakage in unconventional shale gas reservoirs

A review of leakage pathways and current sealing techniques

Azis Yudhowijoyo, Roozbeh Rafati, Amin Sharifi Haddad, Moiz Shahid Raja, Hossein Hamidi

Research output: Contribution to journalArticle

1 Citation (Scopus)
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Abstract

Shale gas extraction is seen to be a bridge fuel to the future due to lower GHG emissions compared to oil. However, it is also one of the most controversial topics due to the involvement of fracking in their production. Based on the analysis performed in this review we found that despite hydraulic fracture propagation being a possible conduit of methane leakage, the major cause of gas leakage is through leaking wells within the vicinity of fracturing sites. Remedial attempts have revealed promising yet inconsistent results, with no concrete method established for the methane leakage mitigation from shale gas wells.
Original languageEnglish
Pages (from-to)309-319
Number of pages11
JournalJournal of Natural Gas Science & Engineering
Volume54
Early online date19 Apr 2018
DOIs
Publication statusPublished - Jun 2018

Fingerprint

Leakage (fluid)
Methane
Hydraulic fracturing
Hydraulics
Gases
Shale gas
Oils

Keywords

  • methane leakage
  • shale gas
  • greenhouse gas emission
  • hydraulic fracturing
  • aquifer contamination
  • unconventional reservoirs

Cite this

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title = "Subsurface methane leakage in unconventional shale gas reservoirs: A review of leakage pathways and current sealing techniques",
abstract = "Shale gas extraction is seen to be a bridge fuel to the future due to lower GHG emissions compared to oil. However, it is also one of the most controversial topics due to the involvement of fracking in their production. Based on the analysis performed in this review we found that despite hydraulic fracture propagation being a possible conduit of methane leakage, the major cause of gas leakage is through leaking wells within the vicinity of fracturing sites. Remedial attempts have revealed promising yet inconsistent results, with no concrete method established for the methane leakage mitigation from shale gas wells.",
keywords = "methane leakage, shale gas, greenhouse gas emission, hydraulic fracturing, aquifer contamination, unconventional reservoirs",
author = "Azis Yudhowijoyo and Roozbeh Rafati and {Sharifi Haddad}, Amin and Raja, {Moiz Shahid} and Hossein Hamidi",
note = "The authors would like to thank the School of Engineering at the University of Aberdeen for providing the required facilities to complete this study.",
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AU - Yudhowijoyo, Azis

AU - Rafati, Roozbeh

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AU - Raja, Moiz Shahid

AU - Hamidi, Hossein

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AB - Shale gas extraction is seen to be a bridge fuel to the future due to lower GHG emissions compared to oil. However, it is also one of the most controversial topics due to the involvement of fracking in their production. Based on the analysis performed in this review we found that despite hydraulic fracture propagation being a possible conduit of methane leakage, the major cause of gas leakage is through leaking wells within the vicinity of fracturing sites. Remedial attempts have revealed promising yet inconsistent results, with no concrete method established for the methane leakage mitigation from shale gas wells.

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KW - aquifer contamination

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