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Modification of D-W model for corrosion rate of shale gas pipeline under the synergistic corrosion of SRB and CO2

Modification of D-W model for corrosion rate of shale gas pipeline under the synergistic... The purpose of this paper is to develop an equation for the synergistic corrosion of SRB and CO2 based on the D-W model.Design/methodology/approachThe bacterial types in the a and ß pipelines were studied by the most probable number method, and the corrosion morphology of L360 in pipeline water samples was studied by surface analysis. The corrosion rate of L360 was studied using the weight loss method. The gray correlation method was used to calculate the degree of correlation between the influencing factors of corrosion under the synergistic effect of CO2 and SRB. The curve obtained from PIPESIM software and experiments data was then fitted using multiple non-linear regression method by MATLAB software.FindingsThe equation was used to predict the corrosion of the ß pipeline for verification, and it was found that seven out of ten excavation sites were within a 20% error range.Originality/valueUsing the gray correlation method, an equation that considers synergistic corrosion of SRB and CO2 has been developed based on the D-W model. The equation could be used to predict the corrosion rate of shale gas gathering pipelines through SRB and CO2 synergistic corrosion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Modification of D-W model for corrosion rate of shale gas pipeline under the synergistic corrosion of SRB and CO2

Anti-Corrosion Methods and Materials , Volume 68 (3): 10 – Jul 2, 2021

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References (24)

Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
0003-5599
DOI
10.1108/acmm-10-2020-2397
Publisher site
See Article on Publisher Site

Abstract

The purpose of this paper is to develop an equation for the synergistic corrosion of SRB and CO2 based on the D-W model.Design/methodology/approachThe bacterial types in the a and ß pipelines were studied by the most probable number method, and the corrosion morphology of L360 in pipeline water samples was studied by surface analysis. The corrosion rate of L360 was studied using the weight loss method. The gray correlation method was used to calculate the degree of correlation between the influencing factors of corrosion under the synergistic effect of CO2 and SRB. The curve obtained from PIPESIM software and experiments data was then fitted using multiple non-linear regression method by MATLAB software.FindingsThe equation was used to predict the corrosion of the ß pipeline for verification, and it was found that seven out of ten excavation sites were within a 20% error range.Originality/valueUsing the gray correlation method, an equation that considers synergistic corrosion of SRB and CO2 has been developed based on the D-W model. The equation could be used to predict the corrosion rate of shale gas gathering pipelines through SRB and CO2 synergistic corrosion.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Jul 2, 2021

Keywords: Corrosion; Pipelines; Modeling and prediction; Shale gas; Shale gas pipeline; SRB and CO2 synergistic corrosion; Corrosion rate model; Modification of D-W model

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