DOI: 10.1002/2016GL070654
论文题名: Swelling-induced changes in coal microstructure due to supercritical CO2 injection
作者: Zhang Y. ; Lebedev M. ; Sarmadivaleh M. ; Barifcani A. ; Iglauer S.
刊名: Geophysical Research Letters
ISSN: 0094-8653
EISSN: 1944-8384
出版年: 2016
卷: 43, 期: 17 起始页码: 9077
结束页码: 9083
语种: 英语
英文关键词: CO2 geosequestration
; coal swelling
; enhanced coalbed methane recovery
; microstructure
; permeability drop
Scopus关键词: Coal
; Coal bed methane
; Coal deposits
; Computerized tomography
; Firedamp
; Floods
; Metal recovery
; Methane
; Microstructure
; Reservoirs (water)
; Swelling
; Coal permeabilities
; Coal swelling
; Enhanced coalbed methane recoveries
; Geo sequestrations
; Reservoir conditions
; Supercritical CO
; Swelling stress
; X ray micro-computed tomography
; Carbon dioxide
; carbon dioxide
; carbon sequestration
; coal seam
; coalbed methane
; flooding
; fracture
; induced response
; microstructure
; mineral
; permeability
; supercritical flow
; swelling
英文摘要: Enhanced coalbed methane recovery and CO2 geostorage in coal seams are severely limited by permeability decrease caused by CO2 injection and associated coal matrix swelling. Typically, it is assumed that matrix swelling leads to coal cleat closure, and as a consequence, permeability is reduced. However, this assumption has not yet been directly observed. Using a novel in situ reservoir condition X-ray microcomputed tomography flooding apparatus, for the first time we observed such microcleat closure induced by supercritical CO2 flooding in situ. Furthermore, fracturing of the mineral phase (embedded in the coal) was observed; this fracturing was induced by the internal swelling stress. We conclude that coal permeability is drastically reduced by cleat closure, which again is caused by coal matrix swelling, which again is caused by flooding with supercritical CO2. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987718988&doi=10.1002%2f2016GL070654&partnerID=40&md5=dda548fe04956c15840aeaefe4d64f5e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9616
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Petroleum Engineering, Curtin University, Kensington, WA, Australia
Recommended Citation:
Zhang Y.,Lebedev M.,Sarmadivaleh M.,et al. Swelling-induced changes in coal microstructure due to supercritical CO2 injection[J]. Geophysical Research Letters,2016-01-01,43(17).