Molecular dynamics simulation of methane hydrate dissociation by thermal stimulation in conjunction with chemical injection method

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	Molecular dynamics simulation of methane hydrate dissociation by thermal stimulation in conjunction with chemical injection method
	Yan Ke-Feng ; Li Xiao-Sen ; Chen Zhao-Yang ; Li Gang ; Li Zhi-Bao
	2007-11-01
发表期刊	ACTA PHYSICA SINICA
卷号	56 期号:11 页码:6727-6735
摘要	The characteristics of methane hydrate dissociation in the presence of thermal stimulation, chemical injection, and thermal stimulation in conjunction with chemical injection method were investigated by molecular dynamics simulation. The effect of the injection of liquid water (WTR) and 30 wt% ethylene glycol (EG) solution at 277 K and 340 K on methane hydrate dissociation was studied. The results showed the hydrogen bonds between WTR molecules and the water molecules on the hydrate surface were formed,which destroyed the original hydrogen bond balance of the hydrate. Therefore, the clathrate structure of hydrate collapsed, and the hydrate dissociated. The hydrogen bonds was formed obviously between hydroxyl groups of EG molecules and the water molecules on the hydrate surface; this caused the original stable clathrate structure of the hydrate to be destroyed and collapse, and, furthermore, promoted the dissociation of the methane hydrate and the release of methane gas. Compared with the effects of injecting WTR and 30 wt% EG solution at 277 K and 340 K on the dissociation of methane hydrate, the effectivences was found to be: EG (340 K) > WTR (340 K) > EG (277K) > WTR (277K). The thermal stimulation in conjunction with chemical injection method can more effectively promote the dissociation of hydrate.
文章类型	Article
关键词	Methane Hydrate Molecular Dynamics Simulation Thermal Stimulation Method Chemical Injection Method
WOS标题词	Science & Technology ; Physical Sciences
研究领域[WOS]	Physics
关键词[WOS]	ETHYLENE-GLYCOL ; GAS HYDRATE ; 2-AMINOETHANOL
收录类别	SCI
语种	英语
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000251093800094
引用统计	被引频次：9[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/344007/10277
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convis, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Yan Ke-Feng,Li Xiao-Sen,Chen Zhao-Yang,et al. Molecular dynamics simulation of methane hydrate dissociation by thermal stimulation in conjunction with chemical injection method[J]. ACTA PHYSICA SINICA,2007,56(11):6727-6735.
APA	Yan Ke-Feng,Li Xiao-Sen,Chen Zhao-Yang,Li Gang,&Li Zhi-Bao.(2007).Molecular dynamics simulation of methane hydrate dissociation by thermal stimulation in conjunction with chemical injection method.ACTA PHYSICA SINICA,56(11),6727-6735.
MLA	Yan Ke-Feng,et al."Molecular dynamics simulation of methane hydrate dissociation by thermal stimulation in conjunction with chemical injection method".ACTA PHYSICA SINICA 56.11(2007):6727-6735.