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dc.contributor.authorRen, F.
dc.contributor.authorGe, L.
dc.contributor.authorArami-Niya, Arash
dc.contributor.authorRufford, T.E.
dc.contributor.authorXing, H.
dc.contributor.authorRudolph, V.
dc.date.accessioned2020-04-01T14:49:40Z
dc.date.available2020-04-01T14:49:40Z
dc.date.issued2019
dc.identifier.citationRen, F. and Ge, L. and Arami-Niya, A. and Rufford, T.E. and Xing, H. and Rudolph, V. 2019. Gas storage potential and electrohydraulic discharge (EHD) stimulation of coal seam interburden from the Surat Basin. International Journal of Coal Geology. 208: pp. 24-36.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/78454
dc.identifier.doi10.1016/j.coal.2019.04.001
dc.description.abstract

This paper evaluates the potential methane storage capacity of six clay-rich interburden rock samples from coal seam gas (CSG) wells in the Surat Basin, Australia. Clay minerals identified in all samples included kaolinite, illite, smectite, and illite-smectite mixed-layers. The total organic carbon concentrations in these interburden rocks ranged from 0.66–1.19 wt%, and thus these rocks can be classified as fair to good hydrocarbon source rocks. The effective porosity of the rocks determined from mercury intrusion porosimetry and helium pycnometry varied from 6.8% to 12.5%, and included volumes of micropores and mesopores. The adsorption isotherm results indicated that the average adsorption capacity of six interburden was 3.64 cm3/g, a value corresponding to approximately 20% that of Surat Basin coal. Based on the clay compositions and porosity of the samples, the permeability of these Surat interburden rocks is estimated to be <5 nano Darcy using Yang and Aplin's empirical correlation, which was too low for reliable measurement in our laboratory core flooding apparatus even with a differential pressure of 10 bar applied over a shortened 20 mm length core. However, after stimulation by electrohydraulic discharge (EHD) shockwaves the permeability of one of the interburden samples (S2) increased to 0.6 ± 0.11 mD due to development of fractures and new pores by the EHD stimulation. We characterised the development of the fractures after EHD shockwaves using x-ray computer tomography. The findings of this study suggest that dynamic shockwaves such as those generated by EHD have potential to increase permeability of soft and clay-rich interburden layers in CSG reservoirs and other layered reservoirs. This potentially opens these ultra-tight gas resources to exploitation and recovery.

dc.languageEnglish
dc.publisherELSEVIER
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP150103467
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectScience & Technology
dc.subjectTechnology
dc.subjectPhysical Sciences
dc.subjectEnergy & Fuels
dc.subjectGeosciences, Multidisciplinary
dc.subjectGeology
dc.subjectCoal seam gas
dc.subjectInterburden
dc.subjectSource rock
dc.subjectDynamic shockwaves
dc.subjectPermeability
dc.subjectWALLOON SUBGROUP
dc.subjectPORE STRUCTURE
dc.subjectADSORPTION
dc.subjectPOROSITY
dc.subjectSIZE
dc.subjectACCUMULATION
dc.subjectQUEENSLAND
dc.subjectMETHANE
dc.subjectMICRO
dc.subjectCO2
dc.titleGas storage potential and electrohydraulic discharge (EHD) stimulation of coal seam interburden from the Surat Basin
dc.typeJournal Article
dcterms.source.volume208
dcterms.source.startPage24
dcterms.source.endPage36
dcterms.source.issn0166-5162
dcterms.source.titleInternational Journal of Coal Geology
dc.date.updated2020-04-01T14:49:40Z
curtin.departmentWASM: Minerals, Energy and Chemical Engineering
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidArami-Niya, Arash [0000-0001-6450-0774]
dcterms.source.eissn1872-7840
curtin.contributor.scopusauthoridArami-Niya, Arash [36468096400]


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