f Global Seismic Inversion Method for Geological Interpretation - A Case Story

A seismic anomaly recognized, as it was initially interpreted within a carbonate platform and close to the shelf edge, was evaluated as a potential stratigraphic trap. Based on the observation that porous carbonate corresponds to lower acoustic impedance sediments rather, than light carbonate in the studied oil province and because the acoustic impedance variations between reservoir and tight facies within the carbonate platform were not large enough to be resolved clearly on the seismic data, a globally optimized seismic inversion was carried out to determine, firstly, the anomaly location with respect to the shelf-edge location, and, to secondly investigate the properties of the stratigraphic trap.