ISSN: 1546-962X
Published Online: 19 June 2008
Page Count: 9

Measurement of Corrosion Potentials of the Internal Surface of Operating High-Pressure Oil and Gas Pipelines
Demoz, Alebachew
CANMET Energy Technology Centre-Devon, Natural Resources Canada, Alberta

Papavinasam, Sankara
CANMET Materials Technology Laboratory, Natural Resources Canada, Ontario

Michaelian, Kirk
CANMET Energy Technology Centre-Devon, Natural Resources Canada, Alberta

Revie, R. Winston
CANMET Materials Technology Laboratory, Natural Resources Canada, Ontario

(Received 19 May 2007; accepted 22 April 2008)

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

Paper ID: JAI101244
DOI: 10.1520/JAI101244
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