DOI: 10.1016/j.jcou.2018.08.021
Scopus记录号: 2-s2.0-85052784571
论文题名: Influence of injection strategies on local capillary trapping during geological carbon sequestration in saline aquifers
作者: Ren B. ; Jeong H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 441
结束页码: 449
语种: 英语
英文关键词: Connectivity analysis
; Geologic criterion
; Geological carbon sequestration
; Injection strategies
; Local capillary trapping
Scopus关键词: Aquifers
; Carbon
; Hydrogeology
; Capillary entry pressure
; Carbon sequestration
; Connectivity analysis
; Geologic criterion
; Leverett J -function
; Local capillary trapping
; Permeability fields
; Reservoir heterogeneity
; Carbon dioxide
英文摘要: Local capillary trapping (LCT) of CO2 is caused by the intrinsic heterogeneity of storage aquifers. It is computationally intensive to model LCT using conventional reservoir flow simulators. This work proposes a fast proxy method. We decouple the LCT modeling into two parts: permeability-based flow simulation using a connectivity analysis, and identification of local capillary traps (capillary entry pressure-based) using a geologic criterion. The connectivity analysis is employed to rapidly approximate CO2 plume evolution through estimating the arrival time of CO2. This analysis uses the geostatistical realization of permeability fields as input. The geologic criteria algorithm is used to estimate the potential local capillary traps from a given capillary entry pressure field. This field, through the Leverett j-function, is correlated to the permeability field used in the connectivity analysis. We then quantify the total volume of local capillary traps identified within the capillary entry pressure field that can be filled during CO2 migration. We conduct several simulations in the reservoirs with different levels of heterogeneity under various injection scenarios. We demonstrate the reservoir heterogeneity affects the optimal injection rate in maximizing LCT during CO2 injection. This work enhances our understanding of the effects of injections strategies on LCT. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111804
Appears in Collections: 气候减缓与适应
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作者单位: Hildebrand Department of Petroleum and Geosystems Engineering, University of Texas at Austin, Austin, TX 78703, United States; Department of Energy Resources Engineering, Seoul National University, Seoul, 08826, South Korea
Recommended Citation:
Ren B.,Jeong H.. Influence of injection strategies on local capillary trapping during geological carbon sequestration in saline aquifers[J]. Journal of CO2 Utilization,2018-01-01,27