引用本文:袁曦,肖杰,张碧波,王星,朱庆,蔡德强,等. 酸性气井井筒腐蚀控制技术研究[J]. 石油与天然气化工, 2017, 46(1): 76-78, 82.
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酸性气井井筒腐蚀控制技术研究
袁曦1,肖杰1,张碧波2,王星2,朱庆2,蔡德强2,王萌2
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
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H2S /CO2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0.04 mm/a,腐蚀速率远低于腐蚀控制指标0.1 mm/a；油管腐蚀主要集中在井筒上部和底部。 
关键词:  井筒  硫化氢  二氧化碳  腐蚀  缓蚀剂 
DOI：10.3969/j.issn.1007-3426.2017.01.015
分类号:
基金项目:
Study on wellbore corrosion control technology in sour gas wells
Yuan Xi1, Xiao Jie1, Zhang Bibo2, Wang Xing2, Zhu Qing2, Cai Deqiang2, Wang Meng2
1. Research Institute of Natural Gas Technology, PetroChina Southwest Oil and Gasfield Company, Chengdu, Sichuan, China;2. Southern Sichuan Gas District, PetroChina Southwest Oil and Gasfield Company, Luzhou, Sichuan, China
Abstract:
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.
Key words:  wellbore  H2S  CO2  corrosion  corrosion inhibitor