Reservoir Models for Input into Flow Simulators

Abstract

Reservoir characterization is defined as the construction of realistic three-dimensional images of petrophysical properties to be used to predict reservoir performance. In previous chapters we have discussed petrophysical properties and emphasized that permeability and saturation are a function of poresize distribution and that pore size distribution is a function of particle size, sorting, interparticle porosity, separate-vug porosity, and touching-vug pore systems. We have discussed the use of core description and wireline logs for characterizing the one-dimensional distribution of the rock fabrics and associated petrophysical values. We have described the sequence stratigraphic approach to constructing a three-dimensional chronostratigraphic framework and the importance of defining rock-fabric facies within that framework for filling the 3D volume with porosity, permeability, and initial saturation values.