CI Acidizing Corrosion Inhibitor Series
The eMAI™ CI Series corrosion inhibitors are formulated from modified imidazolines, organic quaternary ammonium salts, synergists, and other components. The nitrogen-containing heterocycles in the molecular structure adsorb firmly onto metal surfaces, forming a dense, network-like multi-layer protective film that blocks contact between the acid and the metal surface, slowing acid corrosion of oil and gas well tubing strings and downhole equipment. Applications include hydrochloric acid acidizing, mud acid (HCl/HF) acidizing, wellbore cleaning, tubing descaling, and formation blockage removal, as well as acid pickling of chemical equipment, boiler descaling, and metallurgical machinery—across a wide range of operating conditions and environments. The products deliver strong corrosion inhibition, effectively suppressing metal substrate corrosion under high-temperature, strong-acid conditions with virtually no pitting; they also feature high temperature resistance, low treating concentrations, good compatibility with other additives, and safety with environmental friendliness.
Overview and Applications
COI inhibitors serve lactic, sulfamic, and acetic acids plus H₂S/CO₂ environments; CI grades cover hydrochloric- and mud-acid treatments from 90 to 160°C; CIVA grades protect 60–95°C VES diverting-acid systems, providing low-dosage, high-temperature corrosion control for well stimulation, industrial cleaning, and equipment descaling.