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DOI	10.1016/j.advwatres.2020.103631
	Impact of time-dependent wettability alteration on the dynamics of capillary pressure
	Kassa A.M.; Gasda S.E.; Kumar K.; Radu F.A.
发表日期	2020
ISSN	0309-1708
卷号	142
英文摘要	Wettability is a pore-scale property that has an important impact on capillarity, residual trapping, and hysteresis in porous media systems. In many applications, the wettability of the rock surface is assumed to be constant in time and uniform in space. However, many fluids are capable of altering the wettability of rock surfaces permanently and dynamically in time. Experiments have shown wettability alteration (WA) can significantly decrease capillarity in CO2 storage applications. For these systems, the standard capillary-pressure model that assumes static wettability is insufficient to describe the physics. In this paper, we develop a new dynamic capillary-pressure model that takes into account changes in wettability at the pore-level by adding a dynamic term to the standard capillary pressure function. We assume a pore-scale WA mechanism that follows a sorption-based model that is dependent on exposure time to a WA agent. This model is coupled with a bundle-of-tubes (BoT) model to simulate time-dependent WA induced capillary pressure data. The resulting capillary pressure curves are then used to quantify the dynamic component of the capillary pressure function. This study shows the importance of time-dependent wettability for determining capillary pressure over timescales of months to years. The impact of wettability has implications for experimental methodology as well as macroscale simulation of wettability-altering fluids. © 2020 The Authors
关键词	Capillarity Capillary tubes Digital storage Porous materials Capillary pressure curves Capillary pressure function Dynamic capillary pressures Dynamic component Experimental methodology Exposure-time Time dependent Wettability alteration Wetting capillary pressure carbon dioxide carbon storage porous medium wettability
语种	英语
来源机构	Advances in Water Resources
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131769
推荐引用方式 GB/T 7714	Kassa A.M.,Gasda S.E.,Kumar K.,et al. Impact of time-dependent wettability alteration on the dynamics of capillary pressure[J]. Advances in Water Resources,2020,142.
APA	Kassa A.M.,Gasda S.E.,Kumar K.,&Radu F.A..(2020).Impact of time-dependent wettability alteration on the dynamics of capillary pressure.,142.
MLA	Kassa A.M.,et al."Impact of time-dependent wettability alteration on the dynamics of capillary pressure".142(2020).