温度对5Cr钢在模拟油田高温高压环境中CO2 腐蚀行为的影响

赵国仙, 刘冉冉, 丁浪勇, 张思琦, 郭梦龙, 王映超

Effect of Temperature on CO2-inducedCorrosion Behavior of 5Cr Steel in a Simulated Oilfield Produced High-temperature and High-pressured Water

ZHAO Guoxian, LIU Ranran, DING Langyong, ZHANG Siqi, GUO Menglong, WANG Yingchao

表1 图4中不同样品表面标记区域EDS分析结果 (mass fraction / %)

Table 1 EDS analysis results of the marked zones on the surfaces of 5Cr steel samples in Fig. 4

Temperature / oC Scan area C O S Cl Ca Cr Fe 50 1 5.46 45.07 1.68 3.04 6.50 29.08 5.23 2 7.66 42.10 1.98 2.68 6.71 27.40 7.63 70 1 7.90 37.26 4.15 1.26 14.27 20.67 12.16 2 2.18 3.66 0.24 0.04 0.24 5.97 86.79 90 1 7.22 41.02 2.17 2.45 11.04 20.11 12.65 2 11.18 54.09 0.90 0.57 27.62 2.39 2.13