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Development of the Kinetic Equation of the Groove Corrosion Process for Predicting the Residual Life of Oil-Field Pipelines

Author

Listed:
  • Grigory Popov

    (Department of Materials Science and Technology of Art Products, St. Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

  • Victor Bolobov

    (Department of Materials Science and Technology of Art Products, St. Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

  • Ilia Zhuikov

    (Department of Materials Science and Technology of Art Products, St. Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

  • Vladimir Zlotin

    (Department of Materials Science and Technology of Art Products, St. Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

Abstract

One of the main reasons for oil-field pipeline failure is groove corrosion. The residual life of such pipelines is estimated based on defectoscopy corrosion rate—a ratio of the formed «groove» depth to the pipeline operation start time. In this case, it is supposed that, in the future, the «groove» will deepen at the same rate for the remaining period of the pipe’s operation. However, sometimes, oil-field pipeline operation experience shows that the remaining time of safe operation is much less than the calculated one. In this article, such a discrepancy is explained via the acceleration of the groove corrosion rate in the process of «groove» deepening due to the increasing level of mechanical stresses in the surrounding metal, which intensifies the corrosion process as a result of the mechanochemical effect. Based on a literature analysis and calculated data, the kinetic equation of the groove corrosion rate for an oil-field pipeline is proposed, which accounts for the acceleration of the process rate as the pipeline is operated and allows the more accurate estimation of its remaining service life.

Suggested Citation

  • Grigory Popov & Victor Bolobov & Ilia Zhuikov & Vladimir Zlotin, 2023. "Development of the Kinetic Equation of the Groove Corrosion Process for Predicting the Residual Life of Oil-Field Pipelines," Energies, MDPI, vol. 16(20), pages 1-11, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:20:p:7067-:d:1258682
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