气候变化领域集成服务门户(CCPortal): Experimental estimation of gas permeability of gas-saturated sediments during hydrate formation and freezing

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	Experimental estimation of gas permeability of gas-saturated sediments during hydrate formation and freezing
	Chuvilin E.M.; Grebenkin S.I.
发表日期	2015
ISSN	15607496
卷号	19 期号:2
英文摘要	Results of experimental studies of gas permeability of sand samples in the conditions of hydrate saturation and freezing have been presented. The experiments were performed in a special device allowing the evaluation of the gas permeability of wet samples of the dispersed rocks under the gas pressure in the during formation and dissociation of gas hydrates in the pore space, as well as in the process of freezing and thawing of the hydrate bearing sample. In experimental studies it was revealed that the degree of pore water transition in the hydrate influences the parameters of gas permeability in various sand samples. It was demonstrated experimentally in sand and sandy loam rocks that their gas permeability is reduced by 1-2 orders at a given water content (14-18 %) during the transition to 70-80 % of pore water to hydrate. When hydrate bearing samples freeze, their permeability decreases several times due to the freezing processes of residual pore water and the related processes of additional hydrate formation.
英文关键词	Disperse rocks; Freezing; Gas hydrates; Gas permeability; Hydrate formation; Ice
学科领域	experimental study; freeze-thaw cycle; gas hydrate; ice; permeability; pore space; porewater; sedimentary rock; water content
语种	英语
scopus关键词	experimental study; freeze-thaw cycle; gas hydrate; ice; permeability; pore space; porewater; sedimentary rock; water content
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119929
作者单位	Department of Geology, Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russian Federation
推荐引用方式 GB/T 7714	Chuvilin E.M.,Grebenkin S.I.. Experimental estimation of gas permeability of gas-saturated sediments during hydrate formation and freezing[J],2015,19(2).
APA	Chuvilin E.M.,&Grebenkin S.I..(2015).Experimental estimation of gas permeability of gas-saturated sediments during hydrate formation and freezing.Earth's Cryosphere,19(2).
MLA	Chuvilin E.M.,et al."Experimental estimation of gas permeability of gas-saturated sediments during hydrate formation and freezing".Earth's Cryosphere 19.2(2015).