| 胜利海上埕岛油田注水系统腐蚀机制 |
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| 引用本文： | 孙建芳.胜利海上埕岛油田注水系统腐蚀机制[J].中国石油大学学报(自然科学版),2012,36(3):180-186. |
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| 作者姓名： | 孙建芳 |
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| 作者单位： | 中国地质大学能源学院,北京100083;中国石化股份胜利油田分公司地质科学研究院,山东东营257015 |
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| 基金项目： | 山东省优秀中青年科学家奖励基金 |
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| 摘 要： | 采用标准失重法和电化学方法研究胜利海上埕岛油田注水体系金属腐蚀状况。结果表明:挂片在注入水中腐蚀速率随温度改变呈抛物线形态变化,50～60℃时腐蚀速率最高,腐蚀速率与水中的溶解氧含量呈正相关关系;挂片在3种水样中的腐蚀速率由高到低依次为水源井水、采出水、海水;3种水样中的腐蚀过程主要受阴极控制,在海水中的腐蚀类型为全面腐蚀,在采出水和水源井水中存在孔蚀,且在采出水中的孔蚀反应电阻远大于水源井水的;配伍性良好的回注水体系可在一定程度上降低挂片的腐蚀速率。
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| 关 键 词： | 埕岛油田 注水 腐蚀机制 电化学 海水 |
Corrosion mechanism for water injection system of Chengdao Offshore Oilfield |
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| SUN Jian-fang.Corrosion mechanism for water injection system of Chengdao Offshore Oilfield[J].Journal of China University of Petroleum,2012,36(3):180-186. |
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| Authors: | SUN Jian-fang |
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| Institution: | SUN Jian-fang1,2(1.School of Energy in China University of Geoscience,Beijing 100083,China; 2.Institute of Geological,Shengli Oilfield Company of SINOPEC,Dongying 257015,China) |
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| Abstract: | Standard test method for weight loss and electrochemical methods were used to investigate the corrosion of metal in water injection system of Chengdao Offshore Oilfield.The results show that the corrosion rate of coupon is parabolic shape against time and it comes to its maximum at 50-60 ℃.Besides,the corrosion rate increases with the soluble oxygen content increasing.The water samples are well water,produced water,sea water in discending order of corrosion rate of coupon.The corrosion processing in three water samples is mainly dependent on the negative electrode.The corrosion of coupon in seawater is uniform corrosion,while pitting corrosion happens in well water and produced water.In addition,the corrosion rate of coupon in produced water is smaller than that of well water.The water re-injection system with good compatibility can reduce the corrosion rate of coupon to a certain extent. |
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| Keywords: | Chengdao Oilfield water injection corrosion mechanism electrochemistry seawater |
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