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A failure case of P110 steel tubing in CO2 flooding well

Longfei Song (Corrosion and Protection Center, University of Science and Technology Beijing, Beijing, China)
Zhiyong Liu (Corrosion and Protection Center, University of Science and Technology Beijing, Beijing, China)
Lin Lu (Corrosion and Protection Center, University of Science and Technology Beijing, Beijing, China)
Xiaogang Li (Corrosion and Protection Center, Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China)
BaoZhuang Sun (Corrosion and Protection Center, University of Science and Technology Beijing, Beijing, China)
Huanlin Cheng (Corrosion and Protection Center, University of Science and Technology Beijing, Beijing, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 6 July 2020

Issue publication date: 30 September 2020

165

Abstract

Purpose

This paper aims to analyze a failure case of a P110 tube in a CO2 flooding well.

Design/methodology/approach

The chemical composition, microstructure and mechanical properties of the failed P110 tubing steel were tested, and met the API Spec 5CT standard. The fractures were investigated by scanning electron microscopy and energy dispersive spectroscopy.

Findings

Fracture was induced by stress corrosion cracking (SCC) and that the stress concentration caused by the mechanical damage played an important role in the failure. The failure case is a SCC failure affected by mechanical damage and galvanic corrosion.

Originality/value

The effect of the infiltration of groundwater was studied in the failure case. The stress concentration caused by the mechanical damage played an important role in the failure.

Keywords

Acknowledgements

This work was financially supported by the National Key Research and Development Program of China (No.2018YFB0605502).

Citation

Song, L., Liu, Z., Lu, L., Li, X., Sun, B. and Cheng, H. (2020), "A failure case of P110 steel tubing in CO2 flooding well", Anti-Corrosion Methods and Materials, Vol. 67 No. 5, pp. 453-463. https://doi.org/10.1108/ACMM-04-2020-2296

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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