Analysis on the Influence Factors of Casing Collapse Resistance Strength

Abstract:

Casing collapse resistance strength is an important parameter for its properties in using. Specification, geometry accuracy, material properties, and many other reasons can influence casing collapse resistance property. Study each factors influence for casing collapse resistance strength based on full scale collapse test results of seventeen Φ177.80mm casings and there geometry and material properties test results. The results show that casing collapse resistance strength was influenced by geometry accuracy, yield strength and residual stress together. Ovality greater than 0.5% and fluctuated more than 0.5%, or eccentricity more than 10%, casing collapse resistance strength will be reduced obviously. Casing with excellent collapse resistance strength will be produced through making yield strength in appropriate level, controlling the geometry accuracy and reducing residual stress.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 2121-2125
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.2121
• Online since: December 2011
• Authors: Qi Lou, Wei Du, Xin Li Han, Dong Feng Li, Guang Lu Zhang
• Keywords: Collapse Resistance Strength, Eccentricity, Ovality, Yield Strength

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