Corrosion monitoring by Xiaolong Zhang and Efe Kermen

This report focuses on the corrosion monitoring and corrosion sensor systems, for use in CO2 storage wells, including a sensitivity analysis. The feasibility for using new sensors to measure well integrity based on electrochemical principles is investigated. The use of corrosion sensors in CO2 storage wells is at its infancy. The application of tools based on mechanical, sonic, electromagnetic, and optical principles has a limitation of sensitivity. They hardly detect pinholes in the tubing. Electrochemical sensors have been used in the oil industry, but little experience has been documented with respect to usage in CO2 storage wells.