Effect of Acid Hydrolysis on Inhibition Performance of a New Series of Diamine-based Corrosion Inhibitors for Hydrochloric Acid Solutions

摘要

Amine-based corrosion inhibitors are widely used in the oil and gas industry. They are extensively used to protect well tubulars during matrix acidising treatments.Stimulation treatments of oil and gas wells include the use of concentrated solutions of hydrochloric acid (HCI). This acid is employed to enhance the permeability of the reservoir rock and remove formation damage. HCI is selected in such treatments because the reaction products (mainly calcium chloride) are soluble in water.