Fracture Failure Analysis of Φ50.8mm Coiled Tubing

Na Li; Li Xia Zhu; Shen Cong; Yao Rong Feng

doi:10.4028/www.scientific.net/MSF.993.1235

Paper Titles

Test Analysis of Corrosion Perforation in a Crude Oil Gathering Pipeline
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Analysis of Corrosion Causes in the Export of a Compressor in the Pipeline of Western China
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Leakage Failure Analysis of the ERW Steel Pipeline
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Development Direction of Pipeline Corrosion Research on Oil Refining and Chemical Enterprises
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Fracture Failure Analysis of Φ50.8mm Coiled Tubing
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Analysis of Corrosion Behavior on External Surface of 110S Tubing
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Fracture Failure Analysis of C110 Oil Tube in a Western Oil Field
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Experimental Study on Corrosion of Multi-Component Thermal Fluid Thermal Recovery well Tube String
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Failure Analysis and Solution to Bimetallic Lined Pipe
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HomeMaterials Science ForumMaterials Science Forum Vol. 993Fracture Failure Analysis of Φ50.8mm Coiled Tubing

Fracture Failure Analysis of Φ50.8mm Coiled Tubing

Abstract:

The fractured coiled tubing of TS90 steel grade Φ50.8 mm ×3.96 mm in a certain oilfield was analyzed through macroscopic observation, magnetic powder inspection, physical and chemical properties testing, microstructure analysis and SEM analysis. The results showed that the coiled tubing fracture belonged to fatigue fracture and the fatigue crack originated from the area of cyclic friction on the outer surface of the tubing. The cyclic axial plastic stress of the tubing in service caused micro-cracks in the source area and finally led to fatigue fracture failure of the tubing.

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Periodical:

Materials Science Forum (Volume 993)

Pages:

1235-1241

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.993.1235

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Online since:

May 2020

Authors:

Na Li*, Li Xia Zhu, Shen Cong, Yao Rong Feng

Keywords:

Coiled Tubing, Fatigue Fracture, Fracture Failure

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