Erosion-corrosion (E-C) of X-65 pipe steel was investigated in a simulated oil sand slurry through an impingement jet system. Measurements of weight-loss and potentiodynamic polarization curves combined with optical microscopy observation were performed to determine the synergism of corrosion and erosion in E-C of steel. It was found that passivity of the steel developed in static oil-water emulsion cannot be maintained in the flowing fluid due to the enhanced activity of the steel upon impingement of the emulsion/slurry. The effect of slurry impact angle on E-C of steel is complex, depending on the magnitude and synergism of shear stress and normal stress exerting on the electrode surface. There is a synergism of corrosion and erosion in E-C of steel. The contributions of corrosion and erosion to E-C rate of the steel in oil sand slurry rank approximately 30% and 70%, respectively. Erosion dominates the E-C of X-65 steel in oil sand slurry.
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2008 7th International Pipeline Conference
September 29–October 3, 2008
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute and the Pipeline Division
ISBN:
978-0-7918-4858-6
PROCEEDINGS PAPER
A Fundamental Understanding of Erosion-Corrosion of Hydrotransport Pipes in Oil Sands Slurry Available to Purchase
X. Tang,
X. Tang
University of Calgary, Calgary, Alberta, Canada
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L. Y. Xu,
L. Y. Xu
University of Calgary, Calgary, Alberta, Canada
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Y. Frank Cheng
Y. Frank Cheng
University of Calgary, Calgary, Alberta, Canada
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X. Tang
University of Calgary, Calgary, Alberta, Canada
L. Y. Xu
University of Calgary, Calgary, Alberta, Canada
Y. Frank Cheng
University of Calgary, Calgary, Alberta, Canada
Paper No:
IPC2008-64144, pp. 275-280; 6 pages
Published Online:
June 29, 2009
Citation
Tang, X, Xu, LY, & Cheng, YF. "A Fundamental Understanding of Erosion-Corrosion of Hydrotransport Pipes in Oil Sands Slurry." Proceedings of the 2008 7th International Pipeline Conference. 2008 7th International Pipeline Conference, Volume 2. Calgary, Alberta, Canada. September 29–October 3, 2008. pp. 275-280. ASME. https://doi.org/10.1115/IPC2008-64144
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