Abstract: The local corrosion rate of tubing steels N80, P105 and SM110, which were usually used in a domestic oil were studied via simulation. The results show that all of the tubing steels exhibit high corrosion rate and that the flow-rate and ratio of crude to water affect most evidently the local corrosion rate. When the water content is up to 100%, the corrosion rates of steel N80 are 15 times and 5 times larger than those when the water content is 30% and 70%, respectively in this respect the steels P105 and SM110 are similar to N80, especially the corrosion rate of PI 05 when water content is 100% is 50 times larger that when water content is 30%. Moreover, it is found that the CO2 partial pressure and Cl^- concentration also affect the corrosion rate to a certain extent.