The effects of gas hydrate dissociation on the stability of pipeline in seabed

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	The effects of gas hydrate dissociation on the stability of pipeline in seabed
	Wang SY(王淑云); Zheng W; Lu XB(鲁晓兵); Li QP(李清平); Shuyun, W.
Source Publication	Proceedings of the International Offshore and Polar Engineering Conference
	2009
Conference Name	19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
Conference Date	June 21, 2009 - June 26, 2009
Conference Place	Osaka, Japan
Abstract	Based on an assumed vertical pipeline in seabed, which contains sand and gas hydrate sediment, the deformation and stress of pipeline and sediment are numerically simulated with the different area of gas hydrate dissociation by using the business software ABAQUS. The effects of gas hydrate dissociation area and the thickness of overlaying sand sediment on the stability of pipeline are estimated. It is shown that gas hydrate dissociation obviously affects the deformation of pipeline and sediment. With the expansion of dissociation area, the deformation of pipeline and sediment increase obviously, the shear stress and the stress yielding area in sediment increase too. The pipeline is elastic and stable first, and then becomes to bend and finally be whole instability. When the thickness of overlaying sand sediment increases, the deformation of pipeline and surrounding sediment also increase because of the gravity and the sliding force of overlaying sand sediment. Copyright © 2009 by The International Society of Offshore and Polar Engineers (ISOPE).
Keyword	Business Software Deformation And Stress Simulation Stability Sliding Force
ISBN	9781880653531
Indexed By	EI
Language	英语
Document Type	会议论文
Identifier	http://dspace.imech.ac.cn/handle/311007/60468
Collection	水动力学与海洋工程重点实验室(2009-2011)
Corresponding Author	Shuyun, W.
Recommended Citation GB/T 7714	Wang SY,Zheng W,Lu XB,et al. The effects of gas hydrate dissociation on the stability of pipeline in seabed[C]Proceedings of the International Offshore and Polar Engineering Conference,2009.

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