ABSTRACT
In the late stage of oilfield water injection development, the water cut of oil wells increases and the production differential pressure decreases. In order to ensure the crude oil production, it is necessary to increase the liquid extraction volume. Electric submersible pump(ESP), as an important mechanical oil production equipment, has been popularized and applied. According to incomplete statistics, nearly one third of the world's oil production is exploited by various forms of ESP(Wang 2012), and the number of ESP wells is tens of thousands. Nowadays, the proportion of ESP is higher in the main producing areas of crude oil exploitation in the world, especially in desert and offshore oil fields. Therefore, how to better apply the ESP to make it operate efficiently and improve the running life has become a point concerned by users. This time, according to the operation of ESP unit provided for a certain block, we talk about several common damage causes and optimization suggestions during the operation of ESP, in order to improve the running life of ESP unit.
