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Combined styles of depressurization and electrical heating for methane hydrate production

文献类型：期刊论文

作者He, Juan1,3,4,5; Li, Xiaosen1,3,4; Chen, Zhaoyang1,3,4; Li, Qingping2; Zhang, Yu1,3,4; Wang, Yi1,3,4; Xia, Zhiming1,3,4; You, Changyu3,4,5
刊名APPLIED ENERGY
出版日期2021-01-15
卷号282页码:12
ISSN号0306-2619
关键词Depressurization Electrical heating Combined styles Methane hydrates Gas and water production Energy efficiency
DOI10.1016/j.apenergy.2020.116112
通讯作者Chen, Zhaoyang(chenzy@ms.giec.ac.cn)
英文摘要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.
WOS关键词GAS-PRODUCTION ; POROUS-MEDIA ; THERMAL-STIMULATION ; PRODUCTION BEHAVIOR ; DISSOCIATION ; SEDIMENT ; WELLBORE ; RECOVERY ; HUFF
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
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000599655100002
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 ; CAS Science and Technology Apparatus Development Program
源URL[http://ir.giec.ac.cn/handle/344007/32355]  
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.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou, Peoples R China
2.CNOOC Res Inst, State Key Lab Nat Gas Hydrates, Beijing 100028, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
4.Chinese Acad Sci, Key Lab Gas Hydrate, 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. 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.

入库方式： OAI收割

来源：广州能源研究所

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