Fracture Failure Analysis of N80 Q Marine Casing

Hong Zhang; Quan Luo; Xu Hui Liu; Peng Wang; Ding Feng

doi:10.4028/www.scientific.net/AMM.318.331

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 318Fracture Failure Analysis of N80 Q Marine Casing

Fracture Failure Analysis of N80 Q Marine Casing

Abstract:

The 13-3/8〞casing of a well was bent down and broken off in the marine development completion process. The cause for the fracture is systematically analyzed by means of chemical composition analysis, mechanical properties testing, macro and micro fracture analysis and metallographic analysis. The results indicate that, the heterogeneity of the casing material and large oxide metallurgical inclusions found in fracture place severely reduce the properties of the material, which lead to the failure of casing pipe in bad service environment.

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Periodical:

Applied Mechanics and Materials (Volume 318)

Pages:

331-335

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.318.331

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Online since:

May 2013

Authors:

Hong Zhang, Quan Luo, Xu Hui Liu, Peng Wang, Ding Feng

Keywords:

Failure Analysis, Fracture, Marine Casing Pipe, N80 Q, Test

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