Fracture Failure Analysis of the Blowout Preventer Ram in an Oilfield

Abstract:

This paper gives a thorough investigation on the fracture failure of the blowout preventer (BOP) ram. Through appearance inspection, magnetic powder inspection, physicochemical inspection, metallographic inspection and scanning electron microscope (SEM), the main fracture reason of the BOP ram is that there was some original cracks in the BOP ram before fracture, during the service process the bop ram is subjected to impact load, therefore brittle fracture occurs due to the high brittleness of the gate material (which is caused by large internal structure) and low anti-crack propagation ability. Key words: Blowout preventer (BOP) ram; Fatigue break; Brittle fracture; Failure analysis

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 458-463
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.458
• Online since: June 2021
• Authors: Shen Cong*, Zhi Hai Fan, Dong Feng Li, Ke Tong, Nan Ji
• Keywords: Blowout Preventer (BOP) Ram, Brittle Fracture, Failure Analysis, Fatigue Break

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