Failure Analysis of Fractured S135 Grade Drill Pipe

Cai Hong Lu,Yong Gang Liu,Xin Hu Wang,Fang Po Li,Ting Ting Qu

Applied Mechanics and Materials（2013）

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摘要

The fractured drill pipe was investigated by means of non-destructive testing, chemical composition analysis, optical microscope, material property testing machine and SEM with EDS. The results showed that fracture of drill pipe body was hydrogen sulfide stress corrosion cracking. High strength, high hardness, and stress corrosion sensitivity of the drill pipe material were important reasons leading to failure.

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关键词

drill pipe,failure analysis,hydrogen sulfide stress corrosion cracking

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