CO_(2)含量对油管和管线钢在地层水中的腐蚀影响  

Influence of CO_(2) Content on the Corrosion of Tubing and Pipeline Steel in Formation Water

作　　者：商永滨 李欣欣 徐德权 吴琛楠 SHANG Yong-bin;LI Xin-xin;XU De-quan;WU Chen-nan(Changqing Engineering Design Co.,Ltd.Xi’an 710018,China)

机构地区：[1]长庆工程设计有限公司,陕西西安710018

出　　处：《全面腐蚀控制》2023年第6期92-96,共5页Total Corrosion Control

基　　金：长庆安塞油田王窑中西部泡沫辅助减氧空气驱试验(2022ZS1001)。

摘　　要：通过J55油管钢、20^(#)管线钢在饱含N_(2)、CO_(2)地层水的浸泡实验,利用Tafel曲线、线性极化曲线、交流阻抗谱图分析了CO_(2)含量对两种管材的腐蚀规律,在饱含N_(2)、CO_(2)的地层水中,随着N_(2)含量增加J55油管钢、20^(#)管线钢的CO_(2)腐蚀速率呈减小的趋势,随着CO_(2)气体含量的增加J55油管钢、20^(#)管线钢的腐蚀呈现增加趋势。Based on the immersion experiment of J55 Tubing Steel and 20^(#)pipeline steel in formation water saturated with N_(2) and CO_(2),the corrosion law of CO_(2) content to two kinds of tubing was analyzed by Tafel curve,linear polarization curve and AC impedance spectrum.In formation water saturated with N_(2) and CO_(2),the corrosion rate of J55 Tubing Steel and 20^(#)pipeline steel decreased with the increase of N_(2) content,and J55 tubing steel decreased with the increase of CO_(2) content The corrosion of steel and 20^(#)pipeline steel is increasing.

关 键 词：J55油管钢 20#管线钢 Tafel曲线 线性极化曲线 Nyquist曲线 

分 类 号：TE988[石油与天然气工程—石油机械设备]