气候变化领域集成服务门户(CCPortal): CO2 Dissolution Trapping Rates in Heterogeneous Porous Media

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DOI	10.1029/2020GL087001
	CO2 Dissolution Trapping Rates in Heterogeneous Porous Media
	Gilmore K.A.; Neufeld J.A.; Bickle M.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	The rate of carbon dioxide (CO2) dissolution in saline aquifers is the least well-constrained of the secondary trapping mechanisms enhancing the long-term security of geological carbon storage. CO2 injected into a heterogeneous saline reservoir will preferentially travel along high permeability layers increasing the CO2-water interfacial area which increases dissolution rates. We provide a conservative, first-principles analysis of the quantity of CO2 dissolved and the rate at which free-phase CO2 propagates in layered reservoirs. At early times, advection dominates the propagation of CO2. This transitions to diffusion dominated propagation as the interfacial area increases and diffusive loss slows propagation. As surrounding water-filled layers become CO2 saturated, propagation becomes advection dominated. For reservoirs with finely bedded strata, ∼10% of the injected CO2 can dissolve in a year. The maximum fraction of CO2 that dissolves is determined by the volumetric ratio of water in low permeability layers and CO2 in high permeability layers. ©2020. The Authors.
英文关键词	Advection; Aquifers; Dissolution; Hydrogeology; Petroleum reservoir engineering; Reservoirs (water); Saline water; Dissolution rates; Dissolution trapping; First principles; High permeability; Interfacial areas; Layered reservoirs; Low permeability; Trapping mechanisms; Carbon dioxide; advection; aquifer characterization; carbon dioxide; dissolution; hydrogeochemistry; permeability; porous medium; saline intrusion; saturation; trapping; volume
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170241
作者单位	Bullard Laboratories, Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom; BP Institute, University of Cambridge, Cambridge, United Kingdom; Institute of Theoretical Geophysics, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom; Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom
推荐引用方式 GB/T 7714	Gilmore K.A.,Neufeld J.A.,Bickle M.J.. CO2 Dissolution Trapping Rates in Heterogeneous Porous Media[J],2020,47(12).
APA	Gilmore K.A.,Neufeld J.A.,&Bickle M.J..(2020).CO2 Dissolution Trapping Rates in Heterogeneous Porous Media.Geophysical Research Letters,47(12).
MLA	Gilmore K.A.,et al."CO2 Dissolution Trapping Rates in Heterogeneous Porous Media".Geophysical Research Letters 47.12(2020).