研究了温度、CO2分压、溶液pH值及Cl-浓度对4种油套管常用材料N80、P105、P110和SM110腐蚀行为的影响。在温度为90℃ 时，4处材料的腐蚀速率都达到最大值。当温度为65℃ 时，除P105外，其它材料的腐蚀速率随CO2分压的增大而升高。而在90℃ 时，除P105外，其它材料的腐蚀速率在CO2分压为2.5MPa时达到最大值。溶液pH值及Cl-浓度对材料的腐蚀速率的影响不明显。
It was studied that the effect of temperature, partial pressure of CO2, pH value of solution and concentration of Cl- on corroison behavior of 4 types of steels, which include N80, P105, P110 and SM110 thimble using in oilfield. At 90℃ , the corrosion rate of all metals reached maximum value. At 65℃ , except P105, the corrosion rate of other materials increased with pressure of CO2 increasing, however, it reached maximum value at 2.5MPa pressure of CO2 when the temperature was 90℃ . The influence of pH value of solution and Cl- concentration of Tarim oil field on corrosion rate of metals investigated were lightly.
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