Numerical Simulator of Production Forecast for Multi-Lateral Oil Well using MATLAB-based Simulator

This paper presents the development and application of a MATLAB-based numerical simulator for forecasting oil production from a multilateral, saturated reservoir.The simulator predicts reservoir pressure depletion, oil production and cumulative oil production over time for two formations, while accounting for physical assumptions such as solution gas drive and no fluid interaction between reservoirs.Using reservoir and well properties, the pressure and production trends of both the upper and lower formations are forecasted over a two-year period.Results indicate a 1000psi pressure drop in the lower formation and a 1157psi drop in the upper formation.Additionally, the simulator was used to investigate the impact of varying wellhead pressures on liquid holdup and oil production during the first 150 days.It was observed that a wellhead pressure of 1800psi minimized liquid holdup, although this did not correspond to the maximum oil production, highlighting the trade-off between reducing holdup and optimizing production.This research provides an adaptable tool for reservoir engineers to optimize production forecasting and holdup analysis under different operational conditions.Suggestions for further refinements and improvements to the simulator are welcomed to enhance its accuracy and application to broader reservoir scenarios.