GSTDTAP  > 资源环境科学
DOI10.1029/2018WR022741
The Role of Capillary Hysteresis and Pore-Scale Heterogeneity in Limiting the Migration of Buoyant Immiscible Fluids in Porous Media
Cihan, Abdullah; Wang, Shibo; Tokunaga, Tetsu K.; Birkholzer, Jens T.
2018-07-01
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2018
卷号54期号:7页码:4309-4318
文章类型Article
语种英语
国家USA
英文摘要

Understanding the main mechanisms affecting long-term migration and redistribution of injected CO2 in geological carbon storage is needed for developing predictive models to assess environmental risks and designing monitoring schemes. Preparation of a postinjection site care plan is required for CO2 injection wells, including monitoring of pressure changes and injected CO2 plume. Knowledge gaps exist regarding assessment of postinjection monitoring timeframes for the CO2 plume because the processes driving long-term CO2 plume migration and trapping are not fully understood. In the postinjection stage of geological carbon storage, redistribution of CO2 occurs mainly due to buoyancy and capillary forces. This work presents experimental and modeling studies to investigate processes contributing to postinjection plume distribution and stabilization. We conducted a flow cell experiments (0.5 m x 0.05 m x 0.01 m) with two immiscible fluid phases in a glass bead porous medium to study postinjection plume behavior. We employed a hysteretic macroscopic two-phase flow model to interpret the experimental results and to understand main processes leading to plume stabilization. Our findings show that capillary pressure hysteresis explains the experimentally observed plume shape and redistribution at early postinjection stages; however, the long-term plume migration and eventual plume stabilization can only be represented when in addition microscale heterogeneity is accounted for. Results also show that plume stabilization can be extremely slow and that the migration of the plume front can occur through multiple intermittent bursts over long times. Further studies are needed to understand implications of the results for more realistic porous media and large-scale storage reservoirs.


领域资源环境
收录类别SCI-E
WOS记录号WOS:000442502100007
WOS关键词CARBON-DIOXIDE
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20078
专题资源环境科学
作者单位Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA
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Cihan, Abdullah,Wang, Shibo,Tokunaga, Tetsu K.,et al. The Role of Capillary Hysteresis and Pore-Scale Heterogeneity in Limiting the Migration of Buoyant Immiscible Fluids in Porous Media[J]. WATER RESOURCES RESEARCH,2018,54(7):4309-4318.
APA Cihan, Abdullah,Wang, Shibo,Tokunaga, Tetsu K.,&Birkholzer, Jens T..(2018).The Role of Capillary Hysteresis and Pore-Scale Heterogeneity in Limiting the Migration of Buoyant Immiscible Fluids in Porous Media.WATER RESOURCES RESEARCH,54(7),4309-4318.
MLA Cihan, Abdullah,et al."The Role of Capillary Hysteresis and Pore-Scale Heterogeneity in Limiting the Migration of Buoyant Immiscible Fluids in Porous Media".WATER RESOURCES RESEARCH 54.7(2018):4309-4318.
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