含氧注气驱高Ca2+ 浓度工况下C110钢腐蚀产物膜演变及腐蚀行为研究

赵密锋, 胡芳婷, 刘艳明, 宋文文, 谢俊峰, 吕祥鸿, 代盼, 胡航波

Evolution of Corrosion Products Film and Corrosion Behavior of C110 Steel Under High-temperature and High-pressure O2-CO2 Atmosphere in a Simulated Drilling Fluid with High Mineral Content and High Concentration of Ca2+

ZHAO Mifeng, HU Fangting, LIU Yanming, SONG Wenwen, XIE Junfeng, LV Xianghong, DAI Pan, HU Hangbo

图4 C110钢在不同氧分压下腐蚀168 h后的表面SEM形貌图及对应区域的EDS分析结果

Fig.4 SEM morphologies of C110 steel after corrosion for 168 h under oxygen partial pressures of 0 MPa (a), 0.004 MPa (b), 0.04 MPa (c) and 0.4 MPa (d), and the corresponding EDS results of region (A-G) (e-l)