Water produced during the production of oil and gas causes major corrosion problems in oilfield operations. The corrosivity of the produced water increases or decreases depending on the nature of the dissolved substances. Dissolved bicarbonates in produced water are found to
decrease corrosion whereas the organic acids and acid gases enhance the corrosion of carbon steel in the oilfields. The mitigation of CO2 corrosion in the presence of acetic acid was investigated in this study. Rotating cylinder electrode tests were conducted to study the
inhibition properties of several corrosion inhibitors. Based on the laboratory test results, watersoluble cationic organic corrosion inhibitors found to be very effective in controlling acetate enhanced CO2 corrosion.
Key words: corrosion inhibitors, CO2 corrosion, acetate, acetic acid, bicarbonate, organic acid