注水井井筒硫化氢腐蚀研究  

Hydrogen Sulfide Corrosion Study of Water Injection Wellbore

作　　者：刘攀峰[1] 李洪建[2] 李宏伟[1] 

机构地区：[1]西南石油大学 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都61050

出　　处：《内蒙古石油化工》2008年第20期72-74,共3页Inner Mongolia Petrochemical Industry

摘　　要：油田注水是补充地层能量、保持油田稳产和提高采收率的重要措施之一,然而实际操作中由于种种原因造成注入水质要求不达标,在近井地带、尤其是环套空间水质严重恶化,引起油套管严重腐性。其中硫化氢腐蚀是主要原因之一。笔者分析了注水井中硫化氢的来源及腐蚀机理;研究了pH值,压力,氧,二氧化碳,温度,腐蚀产物以及溶解盐对H2S腐蚀的影响。针对注水井套管腐蚀的原因,研究了套管腐蚀防治技术,提出防治注水井硫化氢腐蚀的最好措施是在联合站处理水时加入杀菌剂与表面活性剂,从根本上抑制H2S的产生从而降低腐蚀。Water injection is one of important means for oil field to keep formation energy,maintain production and increase production rate.But during practice operation,great corrosion of oil and case tub is caused by severe water quality deterioration in vicinity of wellbore especially in annulus space because of many reasons.Hydrate sulfide corrosion is a main reason.Source and corrosion mechanism of hydrate sulfide in water wells is analyzed.It is studied that effect of pH value,pressure,oxygen,carbon dioxide,tem...

关 键 词：注水井腐蚀 硫化氢腐蚀 井筒腐蚀 腐蚀 

分 类 号：TE983[石油与天然气工程—石油机械设备]