Sedimentary rocks are heterogeneous and this heterogeneity affects fluid flow. Hence to make an accurate production estimate one needs to make a reservoir model that carries the effects of geological features on two-phase fluid flow. This work proposes a systematic procedure for the design of a reservoir model that represents fluid behaviour of all heterogeneities. The procedure consists of the following steps: establish a geological model that holds all sequences and facies (flow) units; identify the bed type (flow cell) for each facies unit and determine its porosity and permeability; run...