Performic Acid for MIC Prevention in Treated Water Systems: Balancing Biocidal Efficacy Against Oxidizer Induced Corrosion

摘要

The use of oxidizers as biocides in the oil and gas industry has been increasing in recent years. Specifically, peroxy acids (or peracids) have been shown as efficient, cost-effective biocides in salt and produced water treatment applications due in part to their strong oxidation potential. While this trait makes peracids very effective at controlling Microbiologically Influenced Corrosion (MIC), it also increases the threat of corrosion from either the parent acid or oxygen from the oxidizer when not properly dosed. Performic acid in particular has significant potential for both biocidal performance and dosage-related corrosion due to it being a stronger oxidizer than even peracetic acid. In this paper, we will present a study that weighs the biocidal efficacy of performic acid against its impact on metal corrosion. These results will help define a program for preventing microbiologically influenced corrosion in water treatment systems by performic acid.