焊管2024，Vol.47Issue(6)：49-53,5.DOI:10.19291/j.cnki.1001-3938.2024.06.009
80-3Cr油管钢在CO2驱环境下的性能研究与应用
Performance Research and Application of 80-3Cr Tubing Steel in CO2 Flooding Environment
摘要
Abstract
Aiming at the problems of N80 and P110 string failure caused by high CO2 partial pressure,high H2S partial pressure and low temperature wellbore environment in CO2 flooding,the comparative evaluation tests of CO2 corrosion resistance,H2S stress corrosion cracking resistance and low temperature cold brittleness resistance of 80-3Cr,N80 and P110 tubings were carried out.The results show that the corrosion rates of N80,P110 and 80-3Cr tubing with corrosion inhibitor are 0.054 9 mm/a,0.064 5 mm/a and 0.033 3 mm/a,respectively,under different CO2 conditions.The corrosion rate of 80-3Cr tubing is significantly lower than that of N80 and P110.80-3Cr tubing have no crack under different H2S stress corrosion cracking conditions,and all of them have good H2S stress corrosion resistance.At-20℃,the impact power of N80 and P110 tubing is only 62.6%and 23.2%of 80-3Cr tubing respectively.After the application of 80-3Cr tubing steel in the field of CO2 flooding,the string failure rate decreased from 20%in 2019 to 0,which has achieved remarkable results.关键词
80-3Cr油管钢/CO2驱/腐蚀/低温冷脆Key words
80-3Cr tubing steel/CO2 flooding/corrosion/brittle fracture under low temperature分类
矿业与冶金引用本文复制引用
时维才,苏航,周星光,王少龙,姚峰,付安庆..80-3Cr油管钢在CO2驱环境下的性能研究与应用[J].焊管,2024,47(6):49-53,5.基金项目
中国石化江苏油田科技攻关项目"CO2注采井管杆失效机理研究与综合防治"(项目编号JS21013). （项目编号JS21013）
