Analysis of Flow of Gas and Water in a Fractured and Non-Fractured Low-Permeability Reservoir Under Production

Abstract

ABSTRACT We modified Black Oil Applied Simulation Tool (BOAST) Program for gas Reservoirs, and successfully applied it to simulate production of gas from fractured and non fractured low permeability reservoirs. Our modification results in significant decrease in computational time and storage requirements, and allows us to reduce the designated grid blocks to the size of the fractures. Thus the fractures were only distinguished from the matrix By their physical properties. Pressure and saturation of gas and water were calculated at different locations in the reservoir during the production. Our calculation shows that the coproduction of gas and water and presence of the induced fractures significantly enhance the economical production of gas from low permeability reservoirs.