高温多元热流体注采缓蚀剂的性能
Performance of Corrosion Inhibitor in High Temperature Multi-component Thermal Fluid
摘 要
多元热流体注采技术在渤海油田应用期间, 油管腐蚀问题严重, 针对该工艺研发出COSL-1缓蚀剂, 现场应用腐蚀抑制情况良好。利用失重法和电化学极化对COSL-1缓蚀剂在二氧化碳和氧气共存条件下进行了研究, 结果表明该缓蚀剂在90 ℃ 2 MPa CO2和0.02 MPa O2模拟注采溶液中的缓蚀率达到95%以上。动电位测试表明缓蚀剂主要通过改变阳极过程起缓蚀作用, 在N80钢表面的吸附满足Langmuir吸附等温式。
N80钢
二氧化碳
氧气
缓蚀剂
multi-component thermal fluid
N80 steel
carbon dioxide
oxygen
corrosion inhibitor
Abstract
Multi-component thermal fluid exploitation enhanced the recovery factor of thick oil greatly in Bohai Oilfield, but also caused severe corrosion of oil tubes. Corrosion inhibitor COSL-1 was developed to prevent the corrosion with good result in oil well. The inhibition performance of COSL-1 was investigated by weight loss and polarization curves. The inhibition efficiency can reach 95% in simulated solution with 2 MPa CO2 and 0.02 MPa O2 at 90 ℃. Electrochemical tests show that inhibitor COSL-1 belongs to mixed-type inhibitor and prohibits the corrosion anodic process principally, and the adsorption behavior of the inhibitor on steel N80 obeys the Langmuir isothermal equation.
中图分类号 TG174.42
所属栏目 应用技术
基金项目 国家重大科技专项(2011ZX05057-005-001)
收稿日期 2012/11/3
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备注付朝阳, 副教授, 博士,
引用该论文: ZHAO Li-chang,MA Zeng-hua,SUN Yong-tao,LIN tao,LIU Hai-tao,WANG Shao-hua,SUN Yu-bao,HE Jin-bei,WANG Jiang-shun,FU Chao-yang. Performance of Corrosion Inhibitor in High Temperature Multi-component Thermal Fluid[J]. Corrosion & Protection, 2013, 34(1): 64
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参考文献
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