2016•Rejiagong gongyiRequires access

Fracture Reason Analysis of Plunger of Tubing Pump in An Oilfield

Long Yan, Fu Anqing, An Hao, Han Ding, Baoji Oilfield Machinery Co.

Abstract

Aiming at the fracture failure accident of tubular pump plunger in an oil field, the fracture reason of the plunger pump was investigated systematically by means of chemical analysis, metallographic analysis, fracture morphology analysis and corrosion products analysis. The results show the plunger fracture belongs to corrosion fatigue fracture, and a large number of inner-surface fold defects formed in the cross piercing process are main causes of induced corrosion fatigue fracture.

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Available abstract

Key concepts: Plunger, Plunger pump, Fracture (geology), Materials science, Corrosion, Metallurgy, Corrosion fatigue, Forensic engineering