Effect of hydrate distribution on effective thermal conductivity changes during hydrate formation in hydrate-bearing quartz sands

doi:10.1016/j.ijheatmasstransfer.2021.121289

	Effect of hydrate distribution on effective thermal conductivity changes during hydrate formation in hydrate-bearing quartz sands
	He, Juan 2,3,5; Li, Xiaosen 1,2,3,4; Chen, Zhaoyang 1,2,3,4; You, Changyu 2,3,5; Yan, Kefeng 2,3,4; Xia, Zhiming 2,3,4; Li, Qingping 1
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2021-08-01
卷号	174 页码:12
关键词	Hydrate distribution Water saturation Gas saturation Hydrate formation Electrical resistance Effective thermal conductivity
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2021.121289
通讯作者	Chen, Zhaoyang(chenzy@ms.giec.ac.cn)
英文摘要	The effect of hydrate distribution on the effective thermal conductivity changes of the actual hydrate-bearing sediments is uncertain. To define this effect, in the hydrate-bearing quartz sands, the effective thermal conductivity was measured by the transient hot-wire method, and hydrate distribution was analyzed by the electrical resistance changes. At first, the effective thermal conductivity changes were investigated from gas saturation, gas pressure, water saturation, water pressure, and temperature. Afterward, in three kinds of hydrate formation processes, compared with hydrate distribution, the changing trends of the effective thermal conductivity at five measuring points were analyzed. The results showed that the effective thermal conductivity was increased with decreasing gas saturation and increasing water saturation or water pressure, and impacted slightly by gas pressure and temperature. Moreover, at five measuring points, the non-uniform hydrate distribution caused different changing trends of the effective thermal conductivity during hydrate formation. In the excess-water setting, an increasing trend was only observed at some local measuring point. The decreasing trends at the most of the measuring points were governed by the reduced water distribution. But in the excess-gas setting, at the most of the measuring points, this increasing trend was observed and controlled by the enlarged hydrate distribution. Besides, for some actual sediments in the excess-water setting, hydrate distribution may be not the key factor of the effective thermal conductivity changes, and further studies were required. This research could offer some valuable reference to the thermal properties in the actual sediments. (C) 2021 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[51576202] ; National Natural Science Foundation of China[51736009] ; National Key R&D Program of China[2016YFC0304002] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; Guangdong Special Support Program[2019BT02L278]
WOS关键词	GAS-PRODUCTION ; METHANE HYDRATE ; HEAT ; DEPRESSURIZATION ; DISSOCIATION ; STIMULATION ; CONVECTION ; SEDIMENTS
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000647617700006
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China ; Special Project for Marine Economy Development of Guangdong Province ; Guangdong Special Support Program
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33104]
专题	中国科学院广州能源研究所
通讯作者	Chen, Zhaoyang
作者单位	1.CNOOC Res Inst, State Key Lab Nat Gas Hydrates, Beijing 100028, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 4.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He, Juan,Li, Xiaosen,Chen, Zhaoyang,et al. Effect of hydrate distribution on effective thermal conductivity changes during hydrate formation in hydrate-bearing quartz sands[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2021,174:12.
APA	He, Juan.,Li, Xiaosen.,Chen, Zhaoyang.,You, Changyu.,Yan, Kefeng.,...&Li, Qingping.(2021).Effect of hydrate distribution on effective thermal conductivity changes during hydrate formation in hydrate-bearing quartz sands.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,174,12.
MLA	He, Juan,et al."Effect of hydrate distribution on effective thermal conductivity changes during hydrate formation in hydrate-bearing quartz sands".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 174(2021):12.