Sour top of the line corrosion in the presence acetic acid

Under stratified flow and dewing conditions, internal corrosion can occur at the top of horizontal pipelines where continuous injection of corrosion inhibitors does not have a mitigating effect. This research work presents an experimental study of the influence of the presence of H₂S (up to 0.13 bars) and acetic acid (up to 1000 ppm) on the more standard CO₂ Top of the Line Corrosion. A comprehensive analysis on the effect of these parameters on the type of corrosion product film formed at the top of the line is performed as well.