Reservoir simulation of Habiganj gas field to maximize ultimate recovery

Abstract

Reservoir simulation is the combination of physics, mathematics, reservoir engineering and computer programming that can predict hydrocarbon reservoir performances under various operating conditions. History matching is one of the most important activities during the development and management of petroleum reservoirs. Matched models are fundamental to ensure reliable future forecasts, and give an idea of the level of understanding of the geological and reservoir model. The specific objective of this study was to select an appropriate production scenario among different alternatives considered for maximum gas recovery at the end of the prediction years. The goal of the study was achieved by calibrating an available PETREL generated geo-model of the reservoir collected from Petrobangla. The simulation model was generated using ECLIPSE 100 black oil simulator and validated by matching the available pressure and production history of different wells of the reservoir. Various parameters like horizontal and vertical permeability, transmissibility, relative permeability of the formation etc were varied to obtain a good pressure and production match. The history matched model was used for predicting production under different development conditions for few additional years. Water table movement with time was tracked and considered for the placement of additional wells. Finally, recoveries for different scenarios after the prediction years were compared to get an idea of the best development option among all the alternatives considered for further field development.