Investigation on the causes of localized corrosion of the gathering pipeline in an oilfield

Shuxin Zhang; Penggang Zhang; Banghui Deng; Gang Wu; Bin Zheng; Lei Li; Hancheng Li

doi:10.1117/12.2619955

22 December 2021 Investigation on the causes of localized corrosion of the gathering pipeline in an oilfield

Shuxin Zhang, Penggang Zhang, Banghui Deng, Gang Wu, Bin Zheng, Lei Li, Hancheng Li

Proceedings Volume 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021); 120583M (2021) https://doi.org/10.1117/12.2619955
Event: 5th International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 2021, Chongqing, China

Abstract

A gathering pipeline of an oil field was damaged by a third party at a distance of 10km from the oil transfer station. During the pipe replacement and repair process, operational personnel found symmetrical corrosion grooves at the bottom of the pipeline. The corrosion mode was analysed by chemical composition, microstructure, XRD, scanning electron microscope, and other methods. The results showed that the chemical composition and metallographic structure of the gathering pipeline met the requirements of the standard, and no abnormality was found after a long year of service. Because the heavy oil mixed scale is deposited on the bottom of the pipeline, under the low flow rates of the medium and localized corrosion occurred at the interface between the sludge and the medium, corrosion grooves were formed. It is recommended to carry out regular pigging operations to remove the sludge.

Citation Download Citation

Shuxin Zhang, Penggang Zhang, Banghui Deng, Gang Wu, Bin Zheng, Lei Li, and Hancheng Li "Investigation on the causes of localized corrosion of the gathering pipeline in an oilfield", Proc. SPIE 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 120583M (22 December 2021); https://doi.org/10.1117/12.2619955

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