烟道气驱油过程中N80钢的腐蚀敏感性研究

doi:10.3976/j.issn.1002-4026.2018.04.010

Abstract

Abstract:

As the technology of flue gas injection is increasingly used，severe corrosion arises in the flue gas injection wellbore. This paper conducted a study on the corrosion of N80 steel in high temperature and high pressure flue gas and used the grey correlation analysis method to analyze sensibility of N80 steel corrosion. The results show that corrosion rate rises with ascension of the temperature when temperature is lower than 60 ℃，and reaches the maximum at 60 ℃；With the pressure increases, the corrosion rate increases. With increasing in flow rate and oxygen content，the corrosion rate increases；With the increase of SO₂ content，the corrosion rate shows a trend of increasing first and then rising. The order of the influence of each factor on the corrosion rate is temperature, oxygen content, pressure, SO₂ content, NaCl content, velocity and NaHCO₃ content.

Key words: corrosion factor, N80 steel, sensibility, flue gas

CLC Number:

TE357.45

ZHOU Ying-mei. Sensibility study on the corrosion of N80 steel during the process of flue gas flooding[J].SHANDONG SCIENCE, 2018, 31(4): 59-64.

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Sensibility study on the corrosion of N80 steel during the process of flue gas flooding

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