含杂CO2 封存条件下13Cr和N80套管钢腐蚀规律研究

刘广胜, 王卫军, 周佩, 谭金颢, 丁宏鑫, 张伟, 向勇

Corrosion Behavior of Casing Steels 13Cr and N80 During Sequestration in an Impure Carbon Dioxide Environment

LIU Guangsheng, WANG Weijun, ZHOU Pei, TAN Jinhao, DING Hongxin, ZHANG Wei, XIANG Yong

表4 120℃、不同压力条件下13Cr钢在富水相中腐蚀72 h后腐蚀产物膜的结合能

Table 4 Binding energy of corrosion products of 13Cr steel after 72 h of corrosion in water-rich phase at 120oC under different pressure conditions

Element 10 MPa 15 MPa 20 MPa Binding energy / eV Peak Binding energy / eV Peak Binding energy / eV Peak Cr 2p 577.1 Cr(OH)3 577.1 Cr(OH)3 577.1 Cr(OH)3 O 1s 531.4 FeCO3 531.4 FeCO3 531.4 FeCO3 Fe 2p 529.7 FeOOH - - 529.7 FeOOH 531.7 Cr(OH)3 531.7 Cr(OH)3 531.7 Cr(OH)3 710.2 FeCO3 710.2 FeCO3 710.2 FeCO3 711.5 FeOOH 711.5 FeOOH 711.5 FeOOH