温度对油井套管钢极化行为的影响

EFFECT OF TEMPERATURE ON POLARIZATION BEHAVIORS OF WELL CASINGS STEEL

采用动电位扫描法研究了Ｊ５５套管钢在２５～１４０℃的模拟油田水中的极化行为，并用曲线拟合法求得了各温度下的腐蚀电化学参数．结果表明，随着温度的升高Ｊ５５套管钢的极化行为和各种腐蚀电化学参数均产生了很大变化．

In simulated oil field aqueous solution,the polarization behaviors of J55 steel at different temperatures(25～140℃)were studied by means of potential scanning,and the corrosive electrochemical parameters(Icorr,βa,βc,IL)were calculated by the curves fitting method.The results showed that the polarization behaviors and electrochemical parameters of J55 steel were largely changed at different temperatures.