Influence of heat conduction and heat convection on hydrate dissociation by depressurization in a pilot-scale hydrate simulator

doi:10.1016/j.apenergy.2019.113405

GIEC OpenIR

	Influence of heat conduction and heat convection on hydrate dissociation by depressurization in a pilot-scale hydrate simulator
	Kou, Xuan 1,2,3,4,5; Wang, Yi 1,2,3,4; Li, Xiao-Sen1,2,3,4 ; Zhang, Yu1,2,3,4 ; Chen, Zhao-Yang 1,2,3,4
	2019-10-01
发表期刊	APPLIED ENERGY
ISSN	0306-2619
卷号	251 页码:10
通讯作者	Li, Xiao-Sen(lixs@ms.giec.ac.cn)
摘要	Natural gas hydrate, as an unconventional energy resource, has generated considerable research interest. It is generally accepted that depressurization method is the most practical and economically promising way to produce gas from gas hydrate sediments. Rates of hydrate dissociation by depressurization depend on heat transfer rate, and the heat transfer during hydrate dissociation mainly includes heat conduction and heat convection. In this paper the Pilot-Scale Hydrate Simulator (PHS), with an inner volume of 117.8 L, was applied to investigate the influence of heat conduction and heat convection on hydrate dissociation. Different thermal boundary conditions and different flow directions during gas recovery from hydrate reservoir by depressurization were performed in the PHS. In addition, the method of studying the effect of different directions of heat convection by changing well locations was firstly proposed in this paper. It was obtained from experimental results that the hydrate dissociation rate with an isothermal boundary is faster than that with a semi-adiabatic boundary, and heat conduction is the dominant factor in hydrate dissociation by depressurization in the constant pressure stage. The influence of heat convection on hydrate dissociation in the constant pressure stage may not be obvious, but during the depressurizing stage, the opposite direction of fluid flow and heat transfer can promote hydrate reformation, and has effect on fluid flow characteristics inside the reservoir. These findings can provide theoretical references for field tests of exploiting natural gas hydrate.
关键词	Hydrate dissociation Heat conduction Heat convection Depressurization Sandy sediment
DOI	10.1016/j.apenergy.2019.113405
关键词[WOS]	NATURAL-GAS HYDRATE ; METHANE HYDRATE ; THERMAL-STIMULATION ; SEDIMENT ; RECOVERY ; RESERVOIR ; DEPOSITS ; CONJUNCTION ; BEHAVIORS ; INJECTION
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[51676190] ; National Natural Science Foundation of China[51806251] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Pearl River S &T Nova Program of Guangzhou[201610010164] ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences[YZ201619] ; Frontier Sciences Key Research Program of the Chinese Academy of Sciences[QYZDJ-SSW-JSC033] ; National Key Research and Development Plan of China[2016YFC0304002] ; National Key Research and Development Plan of China[2017YFC0307306] ; Youth Science and Technology Innovation Talent of Guangdong[2016TQ03Z862] ; Natural Science Foundation of Guangdong[2017A030313313]
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 ; Special Project for Marine Economy Development of Guangdong Province ; Pearl River S &T Nova Program of Guangzhou ; Science and Technology Apparatus Development Program of the Chinese Academy of Sciences ; Frontier Sciences Key Research Program of the Chinese Academy of Sciences ; National Key Research and Development Plan of China ; Youth Science and Technology Innovation Talent of Guangdong ; Natural Science Foundation of Guangdong
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000497966300108
出版者	ELSEVIER SCI LTD
引用统计	被引频次：41[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/344007/25813
专题	中国科学院广州能源研究所
通讯作者	Li, Xiao-Sen
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.CAS Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100083, 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,Wang, Yi,Li, Xiao-Sen,et al. Influence of heat conduction and heat convection on hydrate dissociation by depressurization in a pilot-scale hydrate simulator[J]. APPLIED ENERGY,2019,251:10.
APA	Kou, Xuan,Wang, Yi,Li, Xiao-Sen,Zhang, Yu,&Chen, Zhao-Yang.(2019).Influence of heat conduction and heat convection on hydrate dissociation by depressurization in a pilot-scale hydrate simulator.APPLIED ENERGY,251,10.
MLA	Kou, Xuan,et al."Influence of heat conduction and heat convection on hydrate dissociation by depressurization in a pilot-scale hydrate simulator".APPLIED ENERGY 251(2019):10.