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

doi:10.1016/j.jngse.2018.04.013

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 journal › Article

2 Citations (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 language	English
Pages (from-to)	309-319
Number of pages	11
Journal	Journal of Natural Gas Science & Engineering
Volume	54
Early online date	19 Apr 2018
DOIs	https://doi.org/10.1016/j.jngse.2018.04.013
Publication status	Published - Jun 2018

Keywords

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

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10.1016/j.jngse.2018.04.013Licence: Unspecified

Accepted Manuscript
© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Accepted author manuscript, 702 KBLicence: CC BY-NC-ND

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Cite this

Yudhowijoyo, A., Rafati, R., Sharifi Haddad, A., Raja, M. S., & Hamidi, H. (2018). Subsurface methane leakage in unconventional shale gas reservoirs: A review of leakage pathways and current sealing techniques. Journal of Natural Gas Science & Engineering, 54, 309-319. https://doi.org/10.1016/j.jngse.2018.04.013

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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 - Rafati, Roozbeh

AU - Sharifi Haddad, Amin

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.

KW - methane leakage

KW - shale gas

KW - greenhouse gas emission

KW - hydraulic fracturing

KW - aquifer contamination

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