Page 110 - 机械工程材料2024年第十一期
P. 110
张立原，等：阻垢剂和CO 2 对J55钢在油田模拟采出水中腐蚀行为的影响
Effect of Scale Inhibitor and CO on Corrosion Behavior of J55 Steel in
2
Oil Field Simulated Produced Water
ZHANG Liyuan , SONG Yang , HU Tianbao , YUAN Mengyao , WANG Yingchao , WANG Kai ,
3
2
1
1
1
2
LIU Liming , WANG Xuqiao , LI Bin , DING Kai , WEI Wei 1
1
1
1
1
(1. The 11th Oil Production Plant of Changqing Oil Field Branch of PetroChina Company Limited, Qingyang 745000, China;
2. Xi'an Maurer Petroleum Engineering Laboratory, Co., Ltd., Xi'an 710065, China; 3. College of Materials Science and
Engineering, Xi'an Shiyou University, Xi'an 710065, China)
Abstract: The uniform corrosion and pitting corrosion behavior of J55 steel was studied in oil field simulated
produced water without scale inhibitor and CO 2 , with CO 2 , with scale inhibitor and with both scale inhibitor and CO 2
through immersion corrosion and electrochemical corrosion tests. The results show that under the condition without scale
inhibitor and CO 2 , the uniform corrosion rate of J55 steel was relatively low, and the maximum pitting corrosion rate
was the highest. Compared to those without scale inhibitor and CO 2 , the uniform corrosion rate of the steel increased
and the maximum pitting corrosion rate decreased under the condition with CO 2 , and both decreased under the condition
with scale inhibitor. Under the condition with both CO 2 and scale inhibitor, the uniform corrosion rate of the steel was
the highest, and the maximum pitting corrosion rate was lower than that without scale inhibitor and CO 2 . When CO 2 was
present in the system, CaCO 3 or CaMg(CO 3 ) 2 scaling products were mainly formed on the surface of the steel. Under
the condition with both CO 2 and scale inhibitor, scale inhibitor would inhibit the scaling process, change the structure of
corrosion products and scale deposits, and lost the protective effect on the matrix.
Key words: J55 steel; scale inhibitor; carbon dioxide corrosion; uniform corrosion; pitting corrosion
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