Investigation of NALCO® EC1005A corrosion inhibitor on internal corrosion of pipelines

Abstract The oil and gas industry relies mainly on pipelines to transport crude and refined petroleum, so crude oil is mostly transported via pipelines. The work presented the study of light naphtha solution collected at the Al-Diwaniyah Refinery in southern Iraq, along with four different pipeline materials (Ductile Iron, Carbon Steel X60, Carbon Steel X80, A105), in which NALCO® EC1005A (neutralizing amine) was used to inhibit corrosion at three concentrations: 0.03, 0.04, and 0.05%, respectively. Analysis of acidity content and immersion method were used to test all samples. This study examined the effects of temperature 45 and 55 °C and light naphtha content. The corrosion resistance of A 105 for pipe samples is highest; ductile iron has the lowest value, and X80 steel and X60 steel is moderately valued.