A Novel Emulsion Flow Loop for Investigating the Corrosion of X65 Steel in Emulsions with H2S/CO2

Corrosion resistance (R (P)) of X65 steel was investigated in an oil-in-water emulsion containing H2S and CO2 at several oil concentrations and different flow regions using a novel emulsion flow loop. One working electrode was mounted in the flow developing region while the other one was mounted in a region where the flow is fully developed. The experimental results show that the addition of CO2 to an H2S containing emulsion decreases the corrosion rate. The R (P) in the flow developing region is less than that in the fully developed region and it increases with increasing oil concentration. This flow loop is a promising tool for investigating the R (P) of engineering materials in a simulated environment similar to that encountered in the petroleum industry.