Accurately predicting the burst strength is very important in the casing design for the oil and gas industry. In this paper, finite element analysis is performed for an infinitely long thick walled casing with geometrical imperfections subjected to internal pressure. A comparison with a series of full-scale experiments was conducted to verify the accuracy and reliability of the finite element analysis. Furthermore, three predictive equations were evaluated using the test data, and the Klever equation was concluded to give the most accurate prediction of burst strength. The finite element analysis was then extended to study the effects of major factors on the casing burst strength. Results showed that the initial eccentricity and material hardening parameter had important effects on the burst strength, while the effect of the initial ovality was small.

Issue Section:
Technical Briefs
Keywords:
casing, burst strength, finite element analysis, design engineering, finite element analysis, gas industry, maintenance engineering, mechanical products, oil drilling
Topics:
Finite element analysis, Hardening, Pressure
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 by American Society of Mechanical Engineers
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