J55钢在模拟CO2 注入井环空环境中的关键性腐蚀因素

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12 J55钢在不同温度下的Nyquist和Bode图

Fig.12 Nyquist plots (a) and Bode plots (b) of J55 steel with different temperature (P_total = 9 MPa, $P_{C O_{2}}$ = 4 MPa, pH= 4)