气候变化领域集成服务门户(CCPortal): Loss of axial stability of casing in permafrost production wells with a lateral support on thawing ice-rich ground

CCPortal

DOI	10.21782/KZ1560-7496-2016-4(93-104)
	Loss of axial stability of casing in permafrost production wells with a lateral support on thawing ice-rich ground
	Gorelik J.B.; Soldatov P.V.
发表日期	2016
ISSN	15607496
卷号	20 期号:4
英文摘要	Rzhanitsyn's general method for calculating the stability of an axially loaded column embedded into an elastic medium has been used to develop a calculation scheme and to estimate the critical load that leads to buckling of production well casing supported laterally by thawing ice-rich ground. In the suggested model, casing deforms within a thin layer of ice-rich ground with enhanced deformability under thawing; thawing ground resists elastically. The critical load depends on the thickness of the ice-rich layer, the stif ness of unfrozen ground, and the flexural rigidity of casing. The minimum critical load is a complex function of ice-rich layer thickness, while buckling can be either symmetrical or anti-symmetrical. Symmetrical buckling has been detected instrumentally in an accidental well at the Yamburg gas-condensate field. Using of the well casing with higher rigidity of its construction is suggested to optimize well completion designs and reduce buckling risks in areas of deep bedding of permafrost.
英文关键词	Axial load; Axial stability; Buckling types; Frozen ground; Thawing ground; Well
学科领域	buckling; frozen ground; ice; oil well; permafrost; thawing
语种	英语
scopus关键词	buckling; frozen ground; ice; oil well; permafrost; thawing
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119738
作者单位	Earth Cryosphere Institute, SB RAS, P/O box 1230, Tyumen, 625000, Russian Federation
推荐引用方式 GB/T 7714	Gorelik J.B.,Soldatov P.V.. Loss of axial stability of casing in permafrost production wells with a lateral support on thawing ice-rich ground[J],2016,20(4).
APA	Gorelik J.B.,&Soldatov P.V..(2016).Loss of axial stability of casing in permafrost production wells with a lateral support on thawing ice-rich ground.Earth's Cryosphere,20(4).
MLA	Gorelik J.B.,et al."Loss of axial stability of casing in permafrost production wells with a lateral support on thawing ice-rich ground".Earth's Cryosphere 20.4(2016).