Abstract
Electrical Submersible Pump (ESP) in oil and gas industry is a multistage centrifugal pump used to lift moderate or high volumes of fluids from wellbores. In other words, ESP is one of the artificial lift methods that uses a downhole pump to provide an additional energy or additional lift to fluids inside the wellbore and hence improve hydrocarbon production. Electric power is supplied from surface to operate downhole pumps (ESPs) via cables. Since EPSs are multistage centrifugal pumps, their performance is similar to multi-single-stage centrifugal pumps connected in series. When connecting multi-single-stage centrifugal pumps in series, as the pumps are operated at a constant speed, the rate would be similar but pump heads are higher when compared with that of a single-stage centrifugal pump.
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