Localized corrosion in the oil industry is a dominant area of study that still remains elusive to researchers. Most infrastructure failures in the oil industry result from localized corrosion defects not general corrosion. Most corrosion testing relies on polished surfaces and relatively short tests resulting in detection of small features that may not be representative of field conditions. This paper looks at media blasted surfaces that are imaged at high resolution before and after corrosion testing. This method of corrosion testing shows that the modified surfaces contain populations of features that can be studied in aggregate to evaluate the effectiveness of corrosion inhibitors. This technique maximizes the utility of interferometry as a microscopy technique while also providing a surface that may be more representative of field conditions than a 600 grit polished surface.

Subject
Surface finishing, Pits, Inhibitor performance, Roughness, Corrosion testing, Interferometry, Corrosion scales, Corrosion inhibitors, Brines, Pitting, Corrosion coupons, Localized corrosion, Types of corrosion
Keywords:
localized corrosion, pitting, interferometry, media blasted surfaces, multi-region analysis
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2022
Association for Materials Protection and Performance (AMPP)
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