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三次采油用驱油剂对A3钢的缓蚀作用 被引量:1

CORROSION INHIBITION OF OIL FLOODING REAGENTS FOR MILD STEEL IN TERTIARY OIL RECOVERY
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摘要 应用失重法、动电位扫描和EIS等方法, 研究了A3 碳钢在三元复合驱油剂主要成分水解聚丙烯酰胺(HPAM) 和石油磺酸盐(PS) 水溶液中的腐蚀形态。结果表明, HPAM 对A3钢具有缓蚀作用, 浓度增加, 缓蚀率上升;PS对A3 钢也有缓蚀作用, 但浓度过高时因形成胶束而从碳钢表面脱附, The corrosion performance of mild steel A3 in oilfield refilling water containing oil flooding reagent such as polymer HPAM and petroleum sulfonate (PS) has been investigated by immersion weight loss, potentiodynamic polarization and EIS. It was found that mild steel was under active dissolution in both HPAM and PS solutions. Inhibition efficiency of HPAM increased with the increase in its concentration. EIS presented a single capacitive loop, showing the characteristics of HPAM absorption. However, EIS in PS solution indicated two capacitive loops with lower dispersion coefficient. Moreover, when the PS concentration exceeded 0.06% (w/w), beyond its CMC (critical micelle concentration) in aqueous solution, its inhibition efficiency decreased due to the desorption of PS from steel surface.
出处 《中国腐蚀与防护学报》 CAS CSCD 1999年第5期306-310,共5页 Journal of Chinese Society For Corrosion and Protection
基金 中国石油天然气总公司"九五"重大攻关项目
关键词 A3钢 碳钢 三次采油 缓蚀剂 驱油剂 Mild steel, Tertiary oil recovery, Inhibitor, Desorption, CMC
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