Elnaz Salehi (Master of Science in Petroleum Engineering)
Experimental Studies on the Effect of Number of Stages on Electrical Submersible Pump Two-Phase Flow Performance
Directed by Dr. Mauricio Prado
99 pp., Chapter 5: Conclusions and Recommendations
(140 words)
Two-phase flow performance of a 14-stage electrical submersible pump has been studied experimentally. The experiments are mainly focused on the effect of number of stages on the ESP performance, but the effects of stage intake pressure, gas injection pressure and fluid properties were also studied. Data obtained from the tests show that ESP stage performance deteriorates as the gas volumetric fraction increases. At low gas volumetric flow rates, stage deterioration is very mild and is independent of the stage number. As the volumetric gas fraction exceeds a certain value, the rate of deterioration becomes a function of stage number. This function is unknown, but in stages far away from the injection point, a very mild deterioration is observed. Increasing the gas injection pressure does not affect the stage performance until the gas volumetric fraction reaches the point where surging initiates.
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