Residual Strength Analysis of Oil Tubes with Corrosion Defect

Abstract:

Corrosion defect in oil tubes is one main threat for the safety production of oil field. The corrosion defect in the tube will cause stress concentration and even lead to failure. The injection of CO₂ widely used during the recent years in oil fields, making the corrosion problems more severe. In this study a finite element model for the residual strength analysis of oil tube with corrosion defect was established by the programing language APDL. Based on the actual data of one oil well in Tahe oil field in China, the sensitivities of the axial length, circumferential width, radial depth of the corrosion defect, the internal pressure and axial force on the residual strength of the tube was examined in detail. The proposed method can be referred in the safety evaluation for oil tubes with corrosion defect.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 950-956
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.950
• Online since: March 2016
• Authors: Meng Ying Xia, Qing Quan Duan, Xiao Ben Liu, Hong Zhang
• Keywords: APDL Programming, Corrosion Defect in Oil Tube, Non-Linear Finite Element, Residual Strength, Safety Evaluation

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