A mathematical model for dissociation of gas hydrate

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	A mathematical model for dissociation of gas hydrate
	Lu XB(鲁晓兵); Wang SY(王淑云); Zhang XH(张旭辉); Li QP(李清平); Zeng XH(曾晓辉); Lu, X. B.
会议录名称	Proceedings of the International Offshore and Polar Engineering Conference
	2009
会议名称	19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
会议日期	June 21, 2009 - June 26, 2009
会议地点	Osaka, Japan
摘要	This paper presents a model for natural gas hydrate dissociation from the methane hydrate reservoir by depressurization or temperature-falling of the well. In this model, the controlling equations are consisted of quality conservation, momentum equilibrium and energy conservation equations. Four media: Free methane (gas), methane hydrate (solid), rock skeleton, and water (liquid) are in thermodynamic equilibrium. The heat suction by the dissociation and the convection-conduction are considered also. The geological formation is assumed to be uniform and the flow of free methane is regarded as flow through a porous media with porosity. It is shown that the dissociation rate increases with the increase of depressurization and the increase of initial saturation of gas hydrate and degrades fast with the distance from the boundary. The changes of the pressure on the boundary have large effects on the dissipation of the pore pressure. The changes of the heat conductivity have little effects on the dissociation of gas hydrate and the dissipation of pore pressure. Copyright © 2009 by The International Society of Offshore and Polar Engineers (ISOPE).
关键词	Controlling Equation Depressurizations Dissociation Rates Energy Conservation Equations Flowthrough Geological Formation Heat Conductivity Heat Suction Initial Saturation Methane Hydrates Porous Media Quality Conservation Thermodynamic Equilibria
ISBN号	9781880653531
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/60467
专题	水动力学与海洋工程重点实验室(2009-2011) 流固耦合系统力学重点实验室
通讯作者	Lu, X. B.
推荐引用方式 GB/T 7714	Lu XB,Wang SY,Zhang XH,et al. A mathematical model for dissociation of gas hydrate[C]Proceedings of the International Offshore and Polar Engineering Conference,2009.

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