An Integrated Approach of Fractured Reservoir Modelling Based on Seismic Interpretations and Discrete Fracture Characterisation

Abstract

Abstract An integrated approach of fractured reservoir modeling is presented. First, the fracture density and azimuth distribution of the entire reservoir is mapped from seismic anisotropy analysis and image log calibrations. Then we apply a dynamic workflow to construct the discrete fracture model by connecting fracture elements laterally and vertically. A tetrahedral grid is then generated for detailed reservoir simulation that fully resolves the discrete fracture characterization. Finally the flow simulation is performed on an actual carbonate reservoir block in the Mideast. This study presents a systematic way of modeling and simulating fractured reservoirs. Introduction Fractured reservoir modeling remains a challenge given that realistic fracture characterization is difficult due to no highly-recognized algorithms to derive field-scale fracture properties from seismic processing results. Recent advances in seismic and image log interpretations enable realistic modeling of naturally fractured systems, though with significant uncertainty. Consequently, it is possible, to certain extent, to represent actual fracture distribution in reservoir modeling and run detailed simulation via a discrete modeling approach (Gong, 2006 and 2008).