Abstract

Reservoir characterization is a continuous process, from field discovery to abandonment and involves a number of geological, geophysical and engineering techniques for realistic performance predictions through reservoir simulation. Permeability modeling of an oil and gas field is a significant part of reservoir characterization and reservoir simulation, particularly, in carbonates where it is still a challenge due to their complex faulting and fracture behaviour and complicated reservoir architecture. Additional complexity is added in carbonates due to the interaction between fractures and matrix rock and the diagenetic processes. These rocks usually have diverse pore types and heterogeneity, their porosity is dominated by micro intra-granular porosity, and vugs or macro intergranular pores usually enhance permeability.