Evaluation and Optimization of Corrosion Inhibitor System

Abstract

Abstract By combining two methods of weightlessness and electrochemistry, the corrosion inhibitors have been selected and optimized. The orthogonal experiment has been carried out to optimize the inhibitor’s performance. The range analysis results indicated that corrosion inhibition performance of optimized corrosion inhibitor (HZ-1) has been improved remarkably. The corrosion inhibition rate can reach 94.66% with lower corrosion current density. The optimum concentration of HZ-1 is 90 mg/L and working temperature is 80∼100°C. Its site application shows that the inhibitor also has remarkable corrosion inhibition effect, the concentration of iron ions is decreases, and the period of pumping wells has been prolonged significantly.