通过电化学试验、腐蚀浸泡试验、表面分析等方法研究了316L不锈钢在总压20.2 MPa、矿化度105 mg/L模拟某油田注水系统回注水中的腐蚀行为，分析了pH、温度、Cl-含量等腐蚀因素对其腐蚀行为的影响。结果表明：316L不锈钢在模拟回注水中具有优良的耐均匀腐蚀性能，腐蚀浸泡30 d后，表面有轻微点蚀，氧气的存在增加了其发生点蚀的概率；316L不锈钢在模拟回注水中的点蚀电位为0.036 V，临界点蚀温度为16℃；pH、温度、Cl-含量对316L不锈钢均匀腐蚀速率的影响较为明显，溶液中是否含氧对316L不锈钢均匀腐蚀速率的影响较小。

The corrosion behavior of 316L stainless steel was studied in simulated reinjection water of oilfield injection system with total pressure of 20.2 MPa and degree of mineralization up to 105 mg/L by electrochemical testing, corrosion immersion testing, surface analysis. The effects of pH, temperature, Cl^- content and other corrosion factors on its corrosion behavior were analyzed. The results show that the 316L stainless steel had excellent resistance to uniform corrosion in simulated reinjection water. After 30 days of corrosion immersion, slight pitting happened on the surface of the steel sheet, and the presence of oxygen increased the probability of pitting. The pitting potential of 316L stainless steel in the simulated reinjection water was 0.036 V and the critical pitting temperature was 16 ℃. The uniform corrosion rate of 316L stainless steel was obviously affected by pH, temperature and Cl^- content, and was less affected by the presence of oxygen in solution.