J55钢在模拟CO2 注入井环空环境中的关键性腐蚀因素

崔怀云, 刘智勇, 卢琳

Critical Corrosion Factors for J55 Tubing Steel in a Simulated Annulus Environment of CO2 Injection Well

CUI Huaiyun, LIU Zhiyong, LU Lin

表2 油田水介质的成分

Table 2 Chemical composition of oilfield water

Composition Value Sulfate / mg·L-1 3000~15000 NaHCO3 / mg·L-1 150~1000 KCl / mg·L-1 12000~15000 NaCl / mg·L-1 12000~15000 Inhibitor / mg·L-1 50~200 PCO2 / MPa 4.00