Effects of gas occurrence pattern on distribution and morphology characteristics of gas hydrates in porous media

doi:10.1016/j.energy.2021.120401

	Effects of gas occurrence pattern on distribution and morphology characteristics of gas hydrates in porous media
	Kou, Xuan 1,2,3,4,5; Li, Xiao-Sen 1,3,4,5; Wang, Yi 1,3,4,5; Liu, Jian-Wu 1,3,4,5; Chen, Zhao-Yang 1,3,4,5
刊名	ENERGY
	2021-07-01
卷号	226 页码:12
关键词	Gas hydrates Morphology characteristics Distribution Dissolved gas X-ray CT
ISSN号	0360-5442
DOI	10.1016/j.energy.2021.120401
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn)
英文摘要	Natural gas hydrates have attracted much attention in recent years. It is important to investigate the effects of gas occurrence pattern on hydrate growth habits since distribution and morphology characteristics of gas hydrates have significant effects on physical properties of hydrate-bearing reservoirs. In this work, the differences in distribution and morphology properties of gas hydrates under two gas occurrence patterns have been analyzed via the X-ray computed tomography for the first time. Experimental results reveal direct correlations between the hydrate growth habit and the gas occurrence pattern. In the presence of free gas, grain-attaching hydrates are formed at the arc-shaped contact surface of gas and water, and mass transfer at the gas-water interface is the key controlling factor in hydrate formation process. In the presence of dissolved gas, dispersed and dendritic hydrates are formed in liquid phase as the result of gas solubility change, and gas diffusion is the crucial factor that influences the growth habit and morphology of gas hydrates during hydrate formation from dissolved gas. Besides, the maximum saturation of dendritic hydrates formed from dissolved gas is limited by the gas solubility. These conclusions are valuable in the improvement of prediction accuracy of gas production from hydrate-bearing sediments. (c) 2021 Elsevier Ltd. All rights reserved.
资助项目	Key Program of National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[51676190] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2020D044] ; Youth Innovation Promotion Association CAS[2018382] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences[YJKYYQ20200061] ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province[2019B030302004] ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province[2020B0301030003]
WOS关键词	METHANE-HYDRATE ; BEARING SEDIMENTS ; THERMAL-STIMULATION ; DISSOLVED METHANE ; PORE HABIT ; WATER ; PERMEABILITY ; DISSOCIATION ; GROWTH ; DEPRESSURIZATION
WOS研究方向	Thermodynamics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000649666000013
资助机构	Key Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Special Support Program-Local innovation and entrepreneurship team project ; Special Project for Marine Economy Development of Guangdong Province ; Youth Innovation Promotion Association CAS ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences ; Fundamental Research & Applied Fundamental Research Major Project of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33122]
专题	中国科学院广州能源研究所
通讯作者	Li, Xiao-Sen; Wang, Yi
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 5.CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,et al. Effects of gas occurrence pattern on distribution and morphology characteristics of gas hydrates in porous media[J]. ENERGY,2021,226:12.
APA	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,Liu, Jian-Wu,&Chen, Zhao-Yang.(2021).Effects of gas occurrence pattern on distribution and morphology characteristics of gas hydrates in porous media.ENERGY,226,12.
MLA	Kou, Xuan,et al."Effects of gas occurrence pattern on distribution and morphology characteristics of gas hydrates in porous media".ENERGY 226(2021):12.