Accessible Unlicensed Requires Authentication Published by De Gruyter November 30, 2021

Pitting and CO2 corrosion behavior of oil and gas pipeline welds

Huan Xie, Xiang Chen, Yongxin Lu, Qian Zhang and Haitao Wang
From the journal Materials Testing

Abstract

A finite element (FE) model is presented in this work that is used to analyze the effect of pitting corrosion on the CO2 corrosion behavior of oil and gas pipeline welds. The FE model contains two parts, i. e., stress calculation of the welded joint using Abaqus software, and of the chemical reaction at the welded joint using COMSOL Multiphysics® software. The effect of transportation pressure, pit depth and welding material on the CO2 corrosion behavior of weld metal was investigated using the FE model. It turned out that the FE model is helpful to instruct the management and to assess the remaining service life prediction of pipelines in the oil and gas industry.


Dr. Yongxin Lu School of Materials Science and Engineering Xi’an Shiyou University Xi’an 710065, P. R. China

Funding statement: The authors wish to acknowledge the financial supported granted by Natural Science Basic Research Program of Shaanxi (Program No.: 2021JQ-874, 2021JQ-594).

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Published Online: 2021-11-30

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