Abstract
An Onshore Well “X” of the JOB Pertamina-Petrochina field is a directional well. This particular well has ESP as the artificial lift to deliver the production fluid to the surface. Due to the “off downhole”, oil production had been suspended since 2012. However recently, the well will be activated and the pump will be modified into the new one. The purpose of this modification is to find the most suitable and effective pump with the optimum number of installed stages on the ESP. This ESP design is started by nodal system analysis which correlates Inflow Performance Relationship (IPR) to Intake Pump Pressure. The calculation using the Pudjo Soekarno equation results in a maximum flow rate in this well is 446,33 BPD. The flow rate is targeted at 65% of the maximum flow rate. Therefore, ESP series 319 NBV 250-500/60 Hz is chosen considering the operating range around 231-416 BPD which in this case is inside the range. The pump will be installed at 8500 ft depth. The number of stages based on calculation is 270 stages capable to lift 300 barrels of fluid per day. This flow rate approximately meets the targeted flow rate, furthermore, the pump will be at 47,9% of its Best Efficiency (BEP) during the operation. With this result, the pump is considered able to operate efficiently and durably.
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