EVALUATION OF INHIBITOR EFFICIENCY IN CRUDE OIL PIPELINE OF MISSAN OIL FIELDS SOUTH IRAQ

Abstract

In this paper, three different types of pipeline materials and four types of corrosion inhibitors were test using immersion method in the crude oil solutions collected from six fields southern Iraq. The influence of crude oil composition; temperatures and pipeline roughness were performed. As a result the X80 carbon steel has lower corrosion rate, while ductile iron has largest value and X60 steel shows moderate value. Imidazonline inhibitor has best efficiency while Great inhibitor shows lower efficiency, the pipeline and oil-line inhibitor show moderate values. Increasing roughness of pipeline material reduced inhibitor adsorption and lead to increase of corrosion rate