The high water cut stage and complex corrosion media in drill fluids because of the development of oilfield entering the middle and late stages,which caused the frequent corrosion of the pumping rod,and fracture that was produced by fatigue damage of the pumping rod.In this paper,the corrosive phenomenon and causes of the pumping rod were briefly analyzed,and seven kinds of anticorrosion technologies in three aspects such as material improvement,drill fluids improvement,and surface protection were summarized and discussed,which will provide a guidance for the selection of anticorrosion technologies.Effective anticorrosion technology will greatly prolong the time of the safe running for pumping rod,and reduce the frequency of maintenance or accident treatment,so as to improve the comprehensive economic benefits of oil production.
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