Abstract: The electric submersible pump for oil production has obvious advantages such as high power,strong adaptability,long unit service life and high economic benefits,but it is undeniable that it is greatly affected by the power grid,electrical failure is difficult to deal with,and work efficiency is not high. Therefore,how to improve its work efficiency and reduce the occurrence rate of electrical failure is a very critical issue. Based on experience,the electrical failure of electric submersible pump oil production system is systematically analyzed,and the optimization scheme is given.

Key words: electric submersible pump, insulation, electrical failure, optimal design