The productivity index, PI has been used as a measure of the potential of wells to flow at certain formation pressure drawdown. Additionally, it is used to measure formation damage and formation potential to flow capacity. In ESP-lifted wells, the pressure is boosted by the added number of pump stages. Hence, pump curves are used to describe the outflow performance of such wells. These curves, however, were generated at test bench using water which is a single phase. Because of this, a large error in estimating the performance of oil wells as multiphase flow is pumped through. Additionally, the rate of degradation of pump performance as multiphase flow is pumped is not fully understood in different pump stage design. Moreover, these pump curves are used by ESP design software’s which are commercial with limited licensing. This paper presents a new analytical solution for precisely calculating the productivity index of ESP-lifted wells by which classical pressure traverse calculation can be made using conventional Nodal analysis software. In addition, the approach yields more accurate calculations as it can be calibrated and it eliminates the compounded error in calculation by using pump curves. This method relies on augmenting the effect of pump stages into the induced pressure changes part of the formula.
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