通过高温高压模拟试验，现场挂片试验，电化学试验，腐蚀形貌观察等研究了普通马氏体不锈钢13Cr、超级马氏体不锈钢HP2-13Cr和双相不锈钢22Cr在含CO₂、H₂S高矿化度油气水多相流中的耐蚀性，探究了原油对不锈钢耐蚀性尤其是点蚀机制的影响。结果表明:经过90 d现场挂片试验后，13Cr、HP2-13Cr和22Cr的均匀腐蚀速率分别为0.107 7 mm/a、0.099 4 mm/a和0.003 4 mm/a；在H₂S饱和溶液中，HP2-13Cr比22Cr更容易钝化；在不含H₂S环境中HP2-13Cr的再活化率比22Cr高，充入饱和H₂S后，HP2-13Cr的再活化率低于22Cr。在含原油、H₂S、CO₂、Cl^-及水的环境中，13Cr会发生局部腐蚀，22Cr会产生点蚀，HP2-13Cr会发生均匀腐蚀。

The corrosion resistance of ordinary martensitic stainless steel 13Cr, super martensitic stainless steel HP2-13Cr and duplex stainless steel 22Cr in high salinity oil-gas-water multiphase flow containing CO₂ and H₂S was studied through high temperature and high pressure simulation test, field coupon test, electrochemical test, and corrosion morphology observation. The effect of crude oil on the corrosion resistance of stainless steel, especially on the pitting mechanism, was explored. The results showed that the uniform corrosion rates of 13Cr, HP2-13Cr and 22Cr were 0.107 7 mm/a, 0.099 4 mm/a and 0.003 4 mm/a, respectively, after a 90 day field coupon test. In H₂S saturated solution, HP2-13Cr was easier to passivate than 22Cr; the reactivation rate of HP2-13Cr was higher than that of 22Cr in H₂S-free environment, and the reactivation rate of HP2-13Cr was lower than that of 22Cr after being aerated with saturated H₂S. In the environment containing crude oil, H₂S, CO₂, Cl^- and water, 13Cr suffered localized corrosion, 22Cr suffered pitting, and HP2-13Cr suffered uniform corrosion.