至1997年底，胜利理岛油田的49口电潜泳采油井中，先后有19井次发生故障。故障的主要类型为欠载停机、过载停机、电缆不绝缘和卡泵；造成电潜泵系统故障的主要因素有井身结构、油层条件、机组质量和操作因素。由此提出如下几种改进措施：通过减小机组长度和提高机组抗弯能力来改进电潜泵系统的工作性能；合理选井、选泵；安装可调油嘴代替原来的固定式节流油嘴；采用内贴铅护套加钢结构外扩套的新型电缆；安装毛细管测压装置或电子压力计测压装置；严格按操作规程起下油泵、加固电线包装、加强入井液过滤等。 By the end of 1997, 49 wells of Shengli Li Island oilfield had faults in 19 wells successively. The main types of failures are under-shutdown, over-load shutdown, uninsulated cables and card pumps. The main factors that cause ESP system failure are wellbore structure, reservoir conditions, unit quality and operating factors. The following several improvement measures are put forward: improving the working performance of the ESP system by reducing the unit length and improving the bending resistance of the unit; selecting wells rationally and selecting the pump; installing the adjustable nozzle instead of the fixed throttle; Adopt the new type of cable with inner lead sheath and steel structure outer expansion; install capillary pressure measuring device or electronic manometer pressure measuring device; operate oil pump in strict accordance with the rules, reinforce the electric wire package, and strengthen the filtration into the well fluid.