CO2驱油地面集输管道的腐蚀电化学行为
Electrochemical Behavior in Corrosion of Gathering and Transfer Pipelines for CO2 Flooding
摘 要
采用电化学测试方法,研究了在油田地面集输环境下(40～80℃、CO2饱和)A3钢在四种不同含油率(0%,10%,15%,25%)的采出液中的腐蚀特性及电化学行为.极化曲线表明:在未通CO2和饱和CO2的油水乳状液中(含油率25％),从40~70 ℃,随着温度的升高,腐蚀电流密度Icorr增大,80 ℃反而减小:在饱和CO2油水乳状液中,随着乳状液含油率的升高,Icorr减小;饱和CO2的油水乳状液中的Icorr大于未通CO2条件下油水乳状液中的Icorr:一定温度下,Icorr随着采出液含油率的增大而减小,表明原油具有一定的缓蚀作用.
极化曲线
腐蚀电流密度
CO2 corrosion
polarization curve
corrosion current density
Abstract
The corrosion characteristics and electrochemical behaviors of A3 steel in a simulated oil well production fluid (40～80℃,CO2 saturated) with four different oil-bearing rates(0%,10%,15%,25%) were studied using electrochemical testing.The polarization curves showed that in the oil-water emulsion (oil-bearing rate 25%) without CO2 or saturated by CO2,with the increasing temperature from 40 ℃,the corrosion current density Icorr increased and reached maximum at 70 ℃ and then reduced at 80 ℃.In the oil-water emulsion saturated by CO2, with the increasing oil-bearing rate,Icorr decreased.It implied that the crude oil had inhibition effect on the corrosion of A3 steel in the simulated corrosive medium.
中图分类号 TG172.8 TE988.2
所属栏目 试验研究
基金项目
收稿日期 2008/4/14
修改稿日期 2008/11/24
网络出版日期
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引用该论文: WEI Ai-jun,HUO Fu-yong,WANG Qian,DANG Li,HUANG Jian-zhong. Electrochemical Behavior in Corrosion of Gathering and Transfer Pipelines for CO2 Flooding[J]. Corrosion & Protection, 2009, 30(6): 383～385
被引情况:
【1】王成达,尹志福,李建东,刘立,刘杰, "二氧化碳驱油环境中典型管柱材料的腐蚀行为与特征",腐蚀与防护 34, 307-309(2013)
【2】蔡乾锋,朱世东,李金灵,封子艳,吕 雷, "20钢在模拟CO2驱工况环境中的腐蚀行为",腐蚀与防护 37, 653-656(2016)
【3】王珂,张永强,尹志福,吕雷,朱世东, "N80和3Cr油管钢在CO2驱油环境中的腐蚀行为",腐蚀与防护 36, 706-710(2015)
【4】尹志福,顾菁华,杨志刚,魏彦林,王珂, "模拟CO2驱油环境下温度对J55油管钢腐蚀行为的影响",腐蚀与防护 34, 399-402(2013)
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参考文献
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