I In the process of oil production, there are two methods, namely producing oilnaturally (natural flow) and producing oil wells with artificial lifting or artificiallift. As time goes by, the well will experience a decrease in reservoir pressure anda decline in production, causing the well to no longer be able to naturally produceoil from the reservoir to the surface (natural flow). Therefore, an artificial liftingmethod or artificial lift is needed to help lift fluids from the reservoir in theproduction well. One of the methods that will be discussed in artificial lifting orartificial lift is the Electric Submersible Pump or ESP.In this final project, an evaluation and optimization of the Electric SubmersiblePump (ESP) installed in well P-40 were conducted, with reference to the InflowPerformance Relationship (IPR), specifically utilizing the Composite IPR. In theevaluation phase of the electrical submersible pump (ESP), a decrease in itsvolumetric efficiency was observed, which amounted to 78.76%, using the IND675pump type at a frequency of 60Hz. For the optimization of the ESP pump, a pumpreplacement was performed. In well P-40, the IND675 pump type with a flowproduction rate of 645.8 bfpd was initially used, and optimization was carried outby increasing the production rate through changing the pump type to IND1300. Theproduction rate calculation was based on the IPR curve. Following the optimizationof well P-40, the chosen pump type was IND1300 with 171.89 stages, resulting inan 80% increase in production rate from the maximum production rate of 1540.14bfpd. Additionally, due to the value exceeding 1, a gas separator known as theAdvance Gas Handler (AGH) is required for gas separation.