在压力小于 1 82MPa、温度为 4 0℃时 ,测量了 10cm管径高压管道顶部和底部的二氧化碳(CO2 )湿气腐蚀速率。在气体流速小于 11m s和液体流速小于 0 2m s时 ,测定其流型。介质为去离子水和CO2 气体。在试验条件下的流型为环型或接近层状环流过渡区。在 3h后腐蚀速率趋于稳定且随气体流速、液体流速和CO2 分压的增加而增长。试验结果可应用于油田条件。 When the pressure is less than 1 82MPa and the temperature is 40 ℃, the corrosion rate of carbon dioxide (CO2) in the top and bottom of the 10cm pipe is measured. When the gas flow rate is less than 11m s and the liquid flow rate is less than 0 2m s, the flow pattern is measured. The medium is deionized water and CO2 gas. Under the experimental conditions, the flow pattern is ring-shaped or close to the laminar circulation transition zone. The corrosion rate tends to be stable after 3h and increases with gas flow rate, liquid flow rate and CO2 partial pressure. Test results can be applied to oilfield conditions.