摘要
随着油气田开发年限的不断增长,油气井产出液综合含水率逐渐升高,油套管及地面集输管线出现了腐蚀现象,严重影响了油气田安全生产和经济运行。针对油气田常用的20#、20G、16Mn、15CrMo四种钢材开展腐蚀影响因素、腐蚀性能评价实验研究,既具有理论意义也具有实用价值。在模拟气田产出液环境中设计正交试验,使用失重法研究了四种钢的腐蚀性能。研究表明在该腐蚀环境下,耐蚀性由好到差依次为20 G、20#、15 CrMo、16 Mn,对腐蚀影响最显著的因素按作用强度分别是温度、pH值、HCO3-和Cl-。
Selection of corrosion resistant materials is one of important ways for oil and gas field corrosion control,and especially for corrosion control of new-built oil and gas field surface gathering and transportation and processing system.Established is a model for gas field produced fluids environment,adopted are orthogonal experiments to study corrosion behaviors of such steels as 20G,20#,16Mn and 15CrMo and study results show that the order from good to bad of corrosion behaviors of such steels is 20G,20#,15CrMo and 16Mn in such environment,which can provide experiment basis for selection of corrosion resistant materials of oil and gas field surface gathering and transportation and processing system.
出处
《天然气与石油》
2012年第3期68-74,103,共7页
Natural Gas and Oil
基金
西南石油大学中青年学术骨干和校基金资助项目(178)
关键词
腐蚀性能
正交实验
管线钢
Corrosion behavior
Orthogonal experiment
Pipeline steel
