The integrity of corrosion inhibitor films was challenged in a large scale multiphase flow loop using slug flow. Two different kinds of water-soluble corrosion inhibitors were tested at two different concentrations. A slug flow regime was used because of the high wall shear stress that can be generated. Results show that mechanical forces in this multiphase flow regime as described by the high levels of turbulence and wall shear stress did not have a detrimental effect on the performance of the corrosion inhibitors used in this study. However, the formation of foam appeared as a likely cause of corrosion inhibitor’s lack of performance in multiphase flow environments.

Subject
Inhibitor performance, Flow loop, Corrosion rate, Glass, Inhibitor films, Turbulent flow, Slug flow, Wall shear stress, Gas velocity, Terrain, Multiphase flow, Corrosion inhibitors, Linear polarization resistance
Keywords:
corrosion inhibitors, multiphase, slug flow, shear stress
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2011
Association for Materials Protection and Performance (AMPP)
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