Numerical Study of the Influence of Interlayer Mechanical Properties on Salt Cavern Storage Stability

Xiao Lan Huang; Chao Yu; Hong Ling Ma

doi:10.4028/www.scientific.net/AMM.188.66

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 188Numerical Study of the Influence of Interlayer...

Numerical Study of the Influence of Interlayer Mechanical Properties on Salt Cavern Storage Stability

Abstract:

Numerical and experimental studies including different soft and hard layer thickness were conducted under different pressures for analyzing the effect of interlayers on stability of salt cavern considering shrinkage rate, plastic zone and displacement vectors. The results indicate that: Cavern shrinkage rate is increased appreciably with increased of soft layer thickness and decreased significantly with increased of hard layer thickness. The plastic zone change is not obviously with increased of soft layer thickness but obviously with hard layer and plastic zone are significant differences at layer while cavern including soft layer and hard layer, the soft layer effect on plastic zone is less than hard layer and it is more sensitive to pressure increasing, the fracture of hard layer is more easily than soft layer. Maximum displacements happen at layer while cavern including soft layer and at salt rock while cavern including hard layer. Comprehensive differences effects of soft layer and hard layer to stability of salt cavern storage find that fine hard layer and heavy soft layer are more unfavorable. The results are important to oil-gas storage cavern modeling analysis in laminated salt rock.

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Periodical:

Applied Mechanics and Materials (Volume 188)

Pages:

66-71

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.188.66

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Online since:

June 2012

Authors:

Xiao Lan Huang, Chao Yu, Hong Ling Ma

Keywords:

Creep, Layered Salt Rock, Mechanical Property, Numerical Simulation, Stability, Storage

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