3D Azimuthal Velocity Analyses On Fractured Medium

A29 3D AZIMUTHAL VELOCITY ANALYSES ON FRACTURED MEDIUM Abstract This paper proposes a case study for quantifying the anisotropy that may occur in a fractured carbonate reservoir. Wide azimuthal seismic datasets often exhibit an azimuthal dependency on the normal moveout and the AVO gradient measurements (Rüger 1996 Lynn et al 1996 Lefeuvre 1994). In this paper we present an application of the methodology using azimuthal interval velocity variations. The calculations were based on an efficient anti-multiple processing on a robust automatic picking of azimuth/offset events and on an adequate depth tomography (P. Sexton 1998). The acquisition of the considered Ocean