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This paper describes a workflow that fully utilizes the poststack seismic attributes to derive reliable geologic and fracture models that are validated during the study with blind wells and actual wells drilled after the study. The first step in the workflow is to run poststack seismic processes, which includes volumetric curvature, high resolution poststack inversion, and spectral imaging. The second step consists of using the various poststack seismic volumes to derive 3D geologic models constrained by multiple seismic attributes. The third step consists of using the various poststack seismic volumes and the derived geologic models to build predictive fracture models validated with wells not used during the modeling effort.

This workflow was applied to a complex Paleocene fractured carbonate field in North Africa. A large number of poststack seismic attributes were generated in time and then depth converted within a 3D geocellular grid. These seismic attributes were used simultaneously to create geologic and fracture models. The resulting porosity and fracture density models were validated during the study with a blind well and after the study with a newly drilled well.

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