Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments

doi:10.1021/acs.energyfuels.1c00775

GIEC OpenIR

	Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments
	Kou, Xuan 1,2,3,4,5; Li, Xiao-Sen1,2,3,4 ; Wang, Yi 1,2,3,4; Wan, Kun 1,2,3,4,5; Chen, Zhao-Yang 1,2,3,4
	2021-05-20
发表期刊	ENERGY & FUELS
ISSN	0887-0624
卷号	35 期号:10 页码:8773-8785
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn) ; Wang, Yi(wangyi@ms.giec.ac.cn)
摘要	Pore structure properties of hydrate-bearing sediments considerably affect fluid flow properties during gas production from natural gas hydrate reservoirs. Hence, it is important to investigate the evolution of pore structure characteristics and fluid flow properties in hydrate-bearing sediments under various conditions. In this study, the effects of particle size and hydrate saturation on hydrate growth habits, pore structure properties, and permeability reduction have been analyzed via microscale experiments (using X-ray computed tomography) and pore-network models. Experimental results reveal the pore-habit evolution of gas hydrate from grain-enveloping to pore-filling, as well as the homogeneous distribution of gas hydrate in pores with the increase in hydrate saturation and the decrease in particle size. It is noteworthy that the pore structure characteristics of hydrate-bearing sediments depend on the pore interconnectivity. The pore interconnectivity is closely related to hydrate saturation. Specifically, the volume of non-interconnected pore (dead-end pore first increases and then decreases with the increase in hydrate saturation. However, the pore interconnectivity appears to be less influenced by the hydrate occurrence for small particle sizes. Based on pore-network modeling results, the exponential distribution of pore volume and the normal distribution of throat channel length have been found. Additionally, the correlated equation of absolute permeability and particle size in the presence of gas hydrate has been first proposed. The prediction accuracy of the absolute permeability equation has been validated by experimental results in this work and experimental measurements from previous studies. These results provide valuable information and data for efficient and economic gas production from hydrate-bearing sandy or silt sediments of submarine.
DOI	10.1021/acs.energyfuels.1c00775
关键词[WOS]	METHANE HYDRATE ; RELATIVE PERMEABILITY ; GAS-PRODUCTION ; POROUS-MEDIA ; DECOMPOSITION ; TOMOGRAPHY ; DISSOCIATION ; PARTICLE ; BEHAVIORS ; EVOLUTION
收录类别	SCI
语种	英语
资助项目	Key Program of National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[42022046] ; National Natural Science Foundation of China[51806251] ; 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研究方向	Energy & Fuels ; Engineering
项目资助者	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
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000655602500022
出版者	AMER CHEMICAL SOC
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/33317
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.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,et al. Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments[J]. ENERGY & FUELS,2021,35(10):8773-8785.
APA	Kou, Xuan,Li, Xiao-Sen,Wang, Yi,Wan, Kun,&Chen, Zhao-Yang.(2021).Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments.ENERGY & FUELS,35(10),8773-8785.
MLA	Kou, Xuan,et al."Microscale Experiment and Pore-Network Modeling Analysis of Growth Habit, Pore Structure, and Permeability of Hydrate-Bearing Sediments".ENERGY & FUELS 35.10(2021):8773-8785.