低H2S和高CO2分压下超深井用P110SS油套管钢腐蚀特征研究

幸雪松, 范白涛, 朱新宇, 张俊莹, 陈长风

Corrosion Characteristics of P110SS Casing Steel for Ultra-deep Well in Artificial Formation Water with Low H2S and High CO2 Content

XING Xuesong, FAN Baitao, ZHU Xinyu, ZHANG Junying, CHEN Changfeng

图2 在220 ℃下4 MPa pCO2而pH2S不同时P110SS腐蚀产物微观形貌图

Fig.2 SEM surface morphologies of P110SS steel after corrosion at 220 ℃ under 4 MPa pCO2 and 0 (a, e), 2 (b, f), 10 (c, g) and 20 kPa pH2S (d, h)