SIMULATION AND OPTIMIZATION OF ENHANCED GAS RECOVERY UTILIZING CO2

Abstract

Today, with increasing energy demand and declining gas fields productivity it has become mandatory to focus on improving gas recovery from mature hydrocarbon fields. This thesis aims to study enhanced gas recovery with CO2 injection for depleted gas reservoir. In order to study EGR- CO2, a simulation was done by CMG software. we built a 2d model on which we studied the effect of various parameters such as reservoir heterogeneity, permeability distribution … on two factors: the recovery rate and the hydrocarbon pore volume of CO2 injected. we did also simulate a method for enhanced gas recovery with the injection of a water slug, it showed a promising result on both recovery factor, HCPV CO2 injected by delaying the CO2 breakthrough.