The electrical submersible pump (ESP) was introduced for producing oil in Bohai Bay oilfields of China in wells and they are mainly used in Cheng-bei Oilfield, SZ36-1 Oilfield and BZ428-West Oilfield, etc. Since then, some experiences have been accumulated. In this paper, ESP well completion, matched running parameters with the productivity of the well, performance diagnosis, extending the running life of ESP unit and preparation of the standby ESP units are discussed.

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