Corrosion Monitoring Technology for CO₂ Gas Gathering System

In order to solve the CO2 corrosion problem of CO2 gas ground gathering and transportation system during development process of Changling gas field, corrosion coupon and resistance probe technologies were used as important means of corrosion protection. The results of field application testing showed that on-site data was able to evaluate the corrosion correctly, to reflect the degree of corrosion inside pipelines, to carry out corrosion protection measures, to reduce the CO2 corrosion damage in the ground gathering system. Intelligence of statistical evaluation of corrosion damage wasachieved by establishing a corrosion and protection database management system, and thus upgraded the level of maintenance and management of corrosion in the gas field.