Corrosion Behavior of 20^# Steel in Effusion of Separator in Gas Plant

The effects of CO₂ content, temperature and flow rate on the corrosion behavior of No. 20 steel in the effluent pack of the Se203 well in Changqing Oilfield were studied by indoor coupon test. The results show that with the increase of CO₂ content, temperature and flow rate, the corrosion rate of the samples increased, and the corrosion products were mainly FeCO₃, and the development process of corrosion morphology was different.