TP110TS和P110钢在CO2注入井环空环境中应力腐蚀行为比较

李清, 张德平, 李晓荣, 王薇, 孙宝壮, 艾池

Comparison of Stress Corrosion Behavior of TP110TS and P110 Steel in a Simulated Annular Environment of CO2 Injection Well

LI Qing, ZHANG Deping, LI Xiaorong, WANG Wei, SUN Baozhuang, AI Chi

表2 不同缓蚀剂浓度条件下两类油套管钢U形弯腐蚀及开裂情况对比

Table 2 Comparison of corrosion and cracking of TP110TS and P110 steels after U-bend corrosion in simulated solutions with different concentrations of inhibitor

Alloy Corrosion inhibitor concentration / g·L-1 Degree of fracture Degree of corrosion P110 0 Fracture Corrosion crack 0.4 Unbroken Severe pitting corrosion 1 Unbroken Slightly corroded, less pitting TP110TS 0 Fracture Corrosion crack 0.4 Unbroken Severe pitting corrosion 1 Unbroken Slightly corroded, less pitting