低H<sub>2</sub>S和高CO<sub>2</sub>分压下超深井用P110SS油套管钢腐蚀特征研究

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3 在220 ℃下4 MPa $p_{C O_{2}}$ 时P110SS钢腐蚀产物XRD及EDS 分析结果

Fig.3 XRD patterns (a) of P110SS steel after corrosion at 220 ℃ under 4 MPa $p_{C O_{2}}$ and varied $p_{H_{2} S}$ , and corresponding EDS results of corrosion products formed under 2 kPa (b) and 20 kPa (c) $p_{H_{2} S}$