Perpustakaan Digital ITB

This study focuses on the optimization of oil production in a Well-X that is constrained by low reservoir pressure (1277 psig), high water cut (80%), and wellbore leakage, which significantly reduce natural flow capacity. With a measured depth of 3916 ft and moderate deviation, the well requires artificial lift for sustainable production. The research aims to evaluate the well’s inflow performance and production potential, optimize the design of the Electrical Submersible Pump (ESP), and establish a reliable strategy that ensures long-term operational stability. The methodology integrates several technical analyses, including Pressure-Volume-Temperature (PVT) characterization, flowline and pump emulsion behavior, Inflow Performance Relationship (IPR) analysis, and ESP design simulations using PROSPER software. The ESP selected for this study is the REDA D3500N, consisting of 400 stages and powered by a 150 HP Centrilift 562 motor, designed to be installed at 3500 ft. Performance simulations account for pump intake and discharge pressures, viscosity variations, flow patterns, and gas separator efficiency. The results demonstrate that the ESP achieves a liquid production rate between 853.33 and 2400 RB/day with a best efficiency point (BEP) of 66%. Sensitivity analysis further highlights that production can be optimized closer to the Absolute Open Flow (AOF) of 716 STB/day, provided drawdown and gas expansion are carefully managed. Based on flow regime analysis the well is confirmed to operate under stable distributed flow conditions, without excessive risk of gas lock.