酸性气井井筒腐蚀控制技术研究  

Study on wellbore corrosion control technology in sour gas wells

作　　者：袁曦[1] 肖杰[1] 张碧波[2] 王星[2] 朱庆[2] 蔡德强[2] 王萌[2] 

机构地区：[1]中国石油西南油气田公司天然气研究院 [2]中国石油西南油气田公司蜀南气矿

出　　处：《石油与天然气化工》2017年第1期76-78,82,共4页Chemical engineering of oil & gas

摘　　要：采用高温高压腐蚀挂片、气田水化学分析、多臂井径仪测井等方法,在含H_2S/CO_2酸性气井中,研究了缓蚀剂对井下油管的保护效果。试验结果表明,评选的缓蚀剂防腐效果良好,井下加入缓蚀剂4年后,全油管平均腐蚀速率为0.04mm/a,腐蚀速率远低于腐蚀控制指标0.1mm/a;油管腐蚀主要集中在井筒上部和底部。Using methods of corrosion coupon in high temperature and high pressure, chemistry analysis of gas water and multi-arm caliper logging tool,the application effects of corrosion inhibitor were studied on H2S/CO2 gas well. Test resuilts showed that the selected corrosion inhibitor has good effect of anti-corrosion, after addition of corrosion inhibitor for 4 years, the corrosion rate of full tubing was 0. 04 mm/a, lower than 0. 1 mm/a corrosion control standard; the corrosion areas were mainly concentrated at the top and bottom of the tubing.

关 键 词：井筒 硫化氢 二氧化碳 腐蚀 缓蚀剂 

分 类 号：TE983[石油与天然气工程—石油机械设备]