气候变化领域集成服务门户(CCPortal): Fluid Surface Coverage Showing the Controls of Rock Mineralogy on the Wetting State

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DOI	10.1029/2019GL086380
	Fluid Surface Coverage Showing the Controls of Rock Mineralogy on the Wetting State
	Garfi G.; John C.M.; Lin Q.; Berg S.; Krevor S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:8
英文摘要	The wetting state is an important control on flow in subsurface multi-fluid phase systems, for example, carbon storage and oil production. Advances in X-ray imaging allow us to characterize the wetting state using imagery of fluid arrangement within the pores of rocks. We derived a model from equilibrium thermodynamics relating fluid coverage of rock surfaces to wettability and fluid saturation. The model reproduces the behavior measured in a water-wet, nearly all-quartz, Bentheimer sandstone imaged during steady-state imbibition. A shift in fluid surface coverage is observed when the rock is altered to a new wetting state with crude oil. In two multimineralogical (Berea) samples, one water-wet and the other altered with crude oil, the analysis of fluid surface coverage after imbibition revealed mineral specific wetting preferences only in the altered system. Clays and calcite preferentially alter to an oil-wet state, leading to mixed wettability in the rock. ©2020. The Authors.
英文关键词	Calcite; Crude oil; Petroleum analysis; Rocks; Thermodynamics; Carbon storage; Equilibrium thermodynamics; Fluid saturations; Fluid surface; Oil production; Rock surfaces; Steady state; Xray imaging; Wetting; calcite; carbon storage; crude oil; imbibition; mineralogy; oil production; pore space; porosity; sandstone; saturation; steady-state equilibrium; thermodynamics; wettability; wetting; Berea; Lesotho
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/170465
作者单位	Department of Earth Science and Engineering, Imperial College London, London, United Kingdom; Shell Global Solutions International B.V., Amsterdam, Netherlands; Department of Chemical Engineering, Imperial College London, London, United Kingdom
推荐引用方式 GB/T 7714	Garfi G.,John C.M.,Lin Q.,et al. Fluid Surface Coverage Showing the Controls of Rock Mineralogy on the Wetting State[J],2020,47(8).
APA	Garfi G.,John C.M.,Lin Q.,Berg S.,&Krevor S..(2020).Fluid Surface Coverage Showing the Controls of Rock Mineralogy on the Wetting State.Geophysical Research Letters,47(8).
MLA	Garfi G.,et al."Fluid Surface Coverage Showing the Controls of Rock Mineralogy on the Wetting State".Geophysical Research Letters 47.8(2020).