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Finite element study on residual internal pressure strength of corroded oil pipes and prediction method for remaining life

Yue Yuan (School of New Energy and Materials, Southwest Petroleum University, Chengdu, China)
Kuanhai Deng (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China)
Jiangjiang Zhang (Research Institute, Petroleum Engineering Sinopec Northwest Oilfield Company, Urumqi, China)
Wenguang Zeng (Research Institute, Petroleum Engineering Sinopec Northwest Oilfield Company, Urumqi, China)
Xiangwei Kong (School of Petroleum Engineering, Yangtze University, Wuhan, China)
Yuanhua Lin (School of New Energy and Materials, Southwest Petroleum University, Chengdu, China and State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 9 September 2021

Issue publication date: 9 November 2021

168

Abstract

Purpose

This study aims to provide a theoretical basis to evaluate the suitability and integrity of corrosion pipes.

Design/methodology/approach

The three-dimensional models of the P110S oil pipe with local corrosion damage, general corrosion damage, pitting corrosion damage are established based on the API 579 standard using the nonlinear finite element analysis method for parametric research.

Findings

The reliability of the model is verified based on the experimental data from the existing literature. The effects of the oil pipe’s size and the corrosion damage’s type on the residual internal pressure strength are simulated and obtained. What’s more, a basic method for predicting the remaining life of corrosion damaged pipes is proposed.

Originality/value

The authors evaluated the residual strength of various corroded tubing, compared the tubing with different corrosion types and proposed a basic method for predicting the remaining life of the corroded tubing from the corrosion depth.

Keywords

Acknowledgements

Authors are thankful for financial assistance provided by the Natural Science Foundation of China (No. 52074232).

Citation

Yuan, Y., Deng, K., Zhang, J., Zeng, W., Kong, X. and Lin, Y. (2021), "Finite element study on residual internal pressure strength of corroded oil pipes and prediction method for remaining life", Anti-Corrosion Methods and Materials, Vol. 68 No. 6, pp. 481-488. https://doi.org/10.1108/ACMM-07-2020-2342

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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