| 油管与接箍接头的缝隙腐蚀评价 |
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| 引用本文： | 刘丽,王煦,任呈强,杜清珍,王春华.油管与接箍接头的缝隙腐蚀评价[J].压力容器,2011(12):1-4,10. |
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| 作者姓名： | 刘丽 王煦 任呈强 杜清珍 王春华 |
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| 作者单位： | 西南石油大学材料科学与工程学院;华北油田公司采油工艺研究院; |
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| 基金项目： | 西南石油大学校级基金(校级178,编号:2010XJZ178) |
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| 摘 要： | 台阶面腐蚀是油管和接箍接头腐蚀失效的重要形式,进而在高压下使油管渗漏。采用腐蚀失重、形貌分析和电化学测试,研究了FeCl3溶液和油田采出液中某油田油管钢和接箍钢的缝隙腐蚀敏感性,结果表明,油管钢抗缝隙腐蚀能力比接箍钢低,缝隙腐蚀产生后,交流阻抗增加一个高频容抗,缝隙内呈现点蚀特征,油管和接箍接头台阶面以油管的缝隙腐蚀为主。随着温度升高,缝隙腐蚀程度先增大后减小。
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| 关 键 词： | 油管 接箍 缝隙腐蚀 台阶面 |
Evaluation on Crevice Corrosion of Joint Composed of Oil Tubing and Collar |
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| LIU Li,WANG Xu,REN Cheng-qiang,DU Qing-zhen,WANG Chun-hua.Evaluation on Crevice Corrosion of Joint Composed of Oil Tubing and Collar[J].Pressure Vessel Technology,2011(12):1-4,10. |
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| Authors: | LIU Li WANG Xu REN Cheng-qiang DU Qing-zhen WANG Chun-hua |
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| Affiliation: | LIU Li1,WANG Xu1,REN Cheng-qiang1,DU Qing-zhen2,WANG Chun-hua1(1.School of Materials Science and Engineering,Southwest Petroleum University,Chengdu 610500,China,2.Oil Extraction Research Institute,Huabei Oilfield Company,Renqiu 062552,China) |
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| Abstract: | Corrosion on bench slope between oil tubing and collar is an important damage,which always results in leakage of oil tubing under high pressure.Weight loss,morphology and electrochemical test were adopted to investigate the crevice corrosion susceptibility of tubing and collar steels in FeCl3 solution and oilfield produced liquid.The tubing steel presents lower crevice corrosion resistance than collar steel.An additional capacitance in high frequency range is found while crevice corrosion occurs.Pitting dom... |
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| Keywords: | oil tubing tubing collar crevice corrosion bench slope |
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