A failure case of P110 steel tubing in CO2 flooding well
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 6 July 2020
Issue publication date: 30 September 2020
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