Combined styles of depressurization and electrical heating for methane hydrate production

doi:10.1016/j.apenergy.2020.116112

GIEC OpenIR

	Combined styles of depressurization and electrical heating for methane hydrate production
	He, Juan 1,2,3,4; Li, Xiaosen1,2,3 ; Chen, Zhaoyang 1,2,3; Li, Qingping 5; Zhang, Yu1,2,3 ; Wang, Yi 1,2,3; Xia, Zhiming 1,2,3; You, Changyu 1,2,4
	2021-01-15
发表期刊	APPLIED ENERGY
ISSN	0306-2619
卷号	282 页码:12
通讯作者	Chen, Zhaoyang(chenzy@ms.giec.ac.cn)
摘要	The combined styles of depressurization and electrical heating have an important influence on hydrate recovery and energy use in hydrate exploitation. However, the efficient combined styles of depressurization and electrical heating have not been achieved at present. In this work, six combined styles of depressurization and electrical heating were designed. In order to determine efficient combined styles, a depressurized vertical wellbore and a heated horizontal wellbore were used to model these combined styles and further to dissociate hydrate-bearing samples prepared by the excess-water method. The results showed that electrical heating should be started before depressurization. Specifically, considering hydrate saturation increase of 0.327-2.47% in the hydrate stability region, electrical heating was proposed to start at the onset of fresh hydrate formation. Subsequently, the soaking through electrical heating was performed at a pressure below the equilibrium pressure at the ambient temperature, which increased the averaged hydrate dissociation rate by 7.72%. A lower shut-in pressure for the soaking could enlarge the effective heating radius in samples to improve hydrate dissociation. During depressurization, no electrical heating reduced the averaged water production rate by 80.99% and increased energy efficiency by 18.06%. So electrical heating was proposed to stop in the temperature recovering stage, but whether it was used or not in the temperature reducing stage should depend on exploiting conditions, due to secondary hydrate formation and ice formation at a lower back pressure. This work may offer some reference on the arrangement of depressurization and electrical heating in future field tests for hydrate exploitation.
关键词	Depressurization Electrical heating Combined styles Methane hydrates Gas and water production Energy efficiency
DOI	10.1016/j.apenergy.2020.116112
关键词[WOS]	GAS-PRODUCTION ; POROUS-MEDIA ; THERMAL-STIMULATION ; PRODUCTION BEHAVIOR ; DISSOCIATION ; SEDIMENT ; WELLBORE ; RECOVERY ; HUFF
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51576202] ; National Natural Science Foundation of China[51736009] ; National Natural Science Foundation of China[51879254] ; National Key R&D Program of China[2016YFC0304002] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; CAS Science and Technology Apparatus Development Program[YZ201619]
WOS研究方向	Energy & Fuels ; Engineering
项目资助者	National Natural Science Foundation of China ; National Key R&D Program of China ; Special Project for Marine Economy Development of Guangdong Province ; CAS Science and Technology Apparatus Development Program
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000599655100002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：34[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/344007/32356
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.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 3.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.CNOOC Res Inst, State Key Lab Nat Gas Hydrates, Beijing 100028, 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	He, Juan,Li, Xiaosen,Chen, Zhaoyang,et al. Combined styles of depressurization and electrical heating for methane hydrate production[J]. APPLIED ENERGY,2021,282:12.
APA	He, Juan.,Li, Xiaosen.,Chen, Zhaoyang.,Li, Qingping.,Zhang, Yu.,...&You, Changyu.(2021).Combined styles of depressurization and electrical heating for methane hydrate production.APPLIED ENERGY,282,12.
MLA	He, Juan,et al."Combined styles of depressurization and electrical heating for methane hydrate production".APPLIED ENERGY 282(2021):12.