摘要
采用腐蚀失重法、交流阻抗法、线性极化及动电位扫描分别测定了碳钢在含Ｃａ２＋、ＨＣＯ－３并饱和以ＣＯ２的油气田产出水中的腐蚀速度、传递电阻、点蚀倾向以及电化学参数βａ、βｃ值。实验结果表明，室温（２９℃）下，当介质中ＨＣＯ－３浓度在低于０．１×１０－３Ｍｒ范围内变化时，或较高温度下（５９℃）低于０．０２×１０－３Ｍｒ范围内变化时，碳钢的腐蚀速度均因阴极过程受阻而逐渐下降。然而当其浓度超过此值后。
Using corrosion weight loss method,alternating current resistance methodand potentiodynamic scan techmipue,the corrosion rate,transmission resistance,pitting trend ,and values of electrochemical parameter β 2,β c of carbon steel in oil-gas field water containing Ca 2+ ,HCO 3 -and CO 2are determined.the experimental results show that if the concentration of HCO 3 -in the medium is lower than 0,1×10 -3 Mr at 29C;or lower than 0,02×10 -3 Mr at 59C,the corrosion rate of carbon steel will decrese,gradually because cathode process is resisted ,however,if the comcentyation of HCO 3 -is higher,than the value HCO 3 -will promote the corrosion of carbon steel.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1996年第4期57-60,共4页
Natural Gas Industry
关键词
油田水
气田水
二氧化碳
腐蚀
试验
油气田
碳钢
Oil field water,gas field water,Carbon dioxide,Corrosion,test-ing.
