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

图8 J55油管钢在不同PCO2下的Nyquist和Bode图，Nyquist图中的插图为对应的等效电路

Fig.8 Nyquist plots (a) and Bode plots (b) of J55 steel with different PCO2 (Ptotal = 9 MPa, pH = 4, T = 25oC)