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4 在2 kPa $p_{H_{2} S}$ 和10 MPa $p_{C O_{2}}$ 下温度不同时P110SS腐蚀产物微观形貌

Fig.4 SEM morphologies of P110SS steel after corrosion under 2 kPa $p_{H_{2} S}$ and 4 MPa $p_{C O_{2}}$ at 100 ℃ (a), 140 ℃ (b), 180 ^oC (c) and 220 ℃ (d)