STP1506

    Measurement of Corrosion Potentials of the Internal Surface of Operating High-Pressure Oil and Gas Pipelines

    Published: Jan 2009


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    Abstract

    Corrosion potential is a fundamental electrochemical parameter critical to understanding the thermodynamic aspects of corrosion. Many corrosion theories are based on corrosion potentials. Corrosion potential is routinely and easily measured in the laboratory. In order to transfer this scientific knowledge from the laboratory to the field, it is necessary to determine the corrosion potential under operating field conditions. In this paper, the unique challenges measuring corrosion potentials in an industrial environment are described using measurements of the corrosion potentials of the internal surfaces of pipelines as examples.

    Keywords:

    Ag∕AgCl reference electrode, corrosion potential, internal pipe potential, pseudo-reference electrode


    Author Information:

    Demoz, Alebachew
    Natural Resources Canada, Devon, Alberta

    Papavinasam, Sankara
    Natural Resources Canada, Ottawa, Ontario

    Michaelian, Kirk
    Natural Resources Canada, Devon, Alberta

    Revie, R. Winston
    Natural Resources Canada, Ottawa, Ontario


    Paper ID: STP48754S

    Committee/Subcommittee: G01.11

    DOI: 10.1520/STP48754S


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