A Case Study of Fracture Prediction in a Carbonate Reservoir Based on Anisotropy and Diffraction Analysis

Properties of the reservoir rock, in a case of porous fractured carbonates, depend mainly on both porosity and fracture density. Identifying fracture zones is a complex task. Seismic data are one of the sources of information about the anisotropy of the medium and the scattering objects. Implementation of the azimuthal angle depth migration can help us to extract maximum information related directly to fracture characterization and localize these zones. In this paper we demonstrate the advantages of such an approach used to achieve a better understanding of the cavernous-fractured-porous subsalt carbonate reservoir. Higher reliability of fracture zones interpretation can be obtained by effectively combining anisotropic and diffraction energy attributes, together with more conventional structural attributes (coherency) and well data.