压力容器2011，Vol.28Issue(12)：1-4,10,5.DOI:10.3969/j.issn.1001-4837.2011.12.001
油管与接箍接头的缝隙腐蚀评价
Evaluation on Crevice Corrosion of Joint Composed of Oil Tubing and Collar
摘要
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 dominates the corrosion form in crevice. Thus, the failure of bench slope is mainly caused by the crevice corrosion of oil tubing. Degree of the crevice corrosion increases with the elevating temperature and then decreases.关键词
油管/接箍/缝隙腐蚀/台阶面Key words
oil tubing/tubing collar/crevice corrosion/bench slope分类
能源科技引用本文复制引用
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,2011,28(12):1-4,10,5.基金项目
西南石油大学校级基金(校级178,编号:2010XJZ178) （校级178,编号:2010XJZ178）
