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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，ＨＣＯ－３离子则会促进碳钢的腐蚀
The corrosion rate, transfer resistance, pitting corrosion and electrochemical properties of carbon steel in the production water of the oil and gas fields containing Ca2 +, HCO-3 and saturated with CO2 were measured by the methods of corrosion weight loss, AC impedance, linear polarization and potentiodynamic scanning Parameters βa, βc values. The experimental results show that when the concentration of HCO-3 in the medium is less than 0.1 × 10 -3 Mr at room temperature (29 ° C.) or lower than 0.02 × 10 -3 Mr at higher temperature (59 ° C.) 3Mr range changes, the corrosion rate of carbon steel due to the cathode process and gradually decline. However, when the concentration exceeds this value, HCO-3 ions promote the corrosion of the carbon steel