DOI: 10.1002/grl.50771
论文题名: Pore-scale imaging of geological carbon dioxide storage under in situ conditions
作者: Andrew M. ; Bijeljic B. ; Blunt M.J.
刊名: Geophysical Research Letters
ISSN: 0094-8726
EISSN: 1944-8457
出版年: 2013
卷: 40, 期: 15 起始页码: 3915
结束页码: 3918
语种: 英语
英文关键词: Carbon Storage
; Pore Scale
; Reservoir Pressure
; Reservoir Temperature
Scopus关键词: Carbon dioxide storage
; Carbon storage
; Chemical equilibriums
; Pore scale
; Power law distribution
; Reservoir pressures
; Reservoir temperatures
; X ray microtomography
; Aquifers
; Hydrogeology
; Carbon dioxide
; capillarity
; carbon dioxide
; carbon emission
; geological survey
; global climate
; image analysis
; limestone
; porous medium
; rock
; saturation
英文摘要: While geological carbon dioxide (CO2) storage could contribute to reducing global emissions, it must be designed such that the CO2 cannot escape from the porous rock into which it is injected. An important mechanism to immobilize the CO2, preventing escape, is capillary trapping, where CO2 is stranded as disconnected pore-scale droplets (ganglia) in the rock, surrounded by water. We used X-Ray microtomography to image, at a resolution of 6.4 μm, the pore-scale arrangement and distribution of trapped CO2 clusters in a limestone. We applied high pressures and temperatures typical of a storage formation, while maintaining chemical equilibrium between the CO2, brine, and rock. Substantial amounts of CO2 were trapped, with an average saturation of 0.18. The cluster sizes obeyed a power law distribution, with an exponent of approximately -2.1, consistent with predictions from percolation theory. This work confirms that residual trapping could aid storage security in carbonate aquifers. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881181744&doi=10.1002%2fgrl.50771&partnerID=40&md5=6de32ff21c1d6be3ba0ebc165ec794dc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5990
Appears in Collections: 气候减缓与适应
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作者单位: Qatar Carbonates and Carbon Storage Research Centre, Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, United Kingdom
Recommended Citation:
Andrew M.,Bijeljic B.,Blunt M.J.. Pore-scale imaging of geological carbon dioxide storage under in situ conditions[J]. Geophysical Research Letters,2013-01-01,40(15).