| DOI: | 10.1002/2014GL059653
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| 论文题名: | Process-dependent residual trapping of CO2 in sandstone |
| 作者: | Zuo L.; Benson S.M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10136
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| EISSN: | 1944-9867
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| 出版年: | 2014
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| 卷: | 41, 期:8 | | 起始页码: | 2820
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| 结束页码: | 2826
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| 语种: | 英语
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| 英文关键词: | CO2 exsolution
; Process dependent trapping
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| Scopus关键词: | Sandstone
; Berea sandstone
; Degassing process
; Essential features
; Exsolution
; Gas saturations
; Relative permeability
; Subsurface Flow
; X-ray computed tomography
; Carbon dioxide
; carbon dioxide
; carbon sequestration
; degassing
; exsolution
; parameterization
; permeability
; sandstone
; saturation
; spatial distribution
; subsurface flow
; tomography
; trap (geological structure)
; Berea
; Lesotho
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| 英文摘要: | This paper demonstrates that the nature and extent of residual CO 2 trapping depend on the process by which the CO2 phase is introduced into the rock. We compare residual trapping of CO2 in Berea Sandstone by imbibing water into a core containing either exsolved CO 2 or CO2 introduced by drainage. X-ray computed tomography measurements are used to map the spatial distribution of CO2 preimbibition and postimbibition. Unlike during drainage where the CO 2 distribution is strongly influenced by the heterogeneity of the rock, the distribution of exsolved CO2 is comparatively uniform. Postimbibition, the CO2 distribution retained the essential features for both the exsolved and drainage cases, but twice as much residual trapping is observed for exsolved CO2 even with similar preimbibition gas saturations. Residually trapped exsolved gas also disproportionately reduced water relative permeability. Development of process-dependent parameterization will help better manage subsurface flow processes and unlock benefits from gas exsolution. Key Points Process-dependent trapping Effective gas barrier through degassing process Management of subsurface flow processes ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899034449&doi=10.1002%2f2014GL059653&partnerID=40&md5=7234bda31588fea7bc83d38f96e769d3
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7400
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Energy Resources Engineering, Stanford University, Stanford, CA, United States
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| Recommended Citation: | |
Zuo L.,Benson S.M.. Process-dependent residual trapping of CO2 in sandstone[J]. Geophysical Research Letters,2014-01-01,41(8).
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