Automated Inhibitor Evaluation for Multiphase Acid Gas Applications Using a Standardized Procedure

This paper describes the results of a comprehensive study to rapidly screen a number of inhibitor compounds for service in wet gas applications. It included a combination approach involving field monitoring devices with automated electrochemical techniques using a standardized approach. Tests were run according to ASTM G170 (Standard Guide for Evaluating and Qualifying Oilfield and Refinery Corrosion Inhibitors in the Laboratory). Tests included bubble tests, rotating cylinder, electrochemical and coupon tests to assess formulation and dosage. The approach, methods and results are presented and discussed. Additionally, the approach is further reviewed with implications for use of the same techniques for monitoring of field production for better process control and optimization to minimize corrosion damage and improve asset management.