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

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2 5Cr钢在不同温度下腐蚀坑形貌的EDS分析结果 (mass fraction / %)

Table 2 EDS analysis results of the marked areas in Fig.5

Temperature / ^oC	Scan area	C	O	S	Cl	Ca	Cr	Fe
50	1	45.83	38.85	/	/	0.26	0.73	2.40
50	2	18.63	12.14	0.43	0.22	0.91	6.26	60.52
70	1	14.45	37.31	0.46	0.66	7.11	30.54	7.48
	2	20.24	46.18	0.18	1.20	5.24	21.32	5.15
	3	26.13	39.71	0.22	1.08	3.95	15.52	13.19
90	1	11.22	37.64	1.74	6.43	1.30	14.37	26.82
90	2	5.59	34.78	1.56	6.60	1.60	19.01	30.53