CO₂ CORROSION BEHAVIORS OF SEVERAL STEELS IN SIMULATED OILFIELD ENVIRONMENT

Autoclave was employed to study the corrosion resistance of four kinds of typical steels in simulated oilfield environment containing CO2.The corrosion rates of steels P110,J55 and 1Cr3 decreased gradually with increasing the experimental time,while the corrosion rate of 0Cr13 kept almost constant.The corrosion resistance of steels was consistent in the order of 0Cr13,1Cr3,J55,P110.Scanning electron microscopy(SEM) and X-ray diffraction(XRD) were also employed to analyze their corrosion behaviors.