Integrated AVO Reservoir Characterization and Time-Lapse Analysis of the Widuri Field

A-19 INTEGRATED AVO RESERVOIR CHARACTERIZATION AND TIME-LAPSE ANALYSIS OF THE WIDURI FIELD Summary 1 Reservoir characterization of the Widuri field offshore SE Sumatra is complicated by complex lithology and difficulties in predicting changes in fluid distribution during production. In 2000 a monitor 3D seismic data set of the Widuri field was acquired and processed to take advantage of seismic AVO effects. The base line 1991 seismic data set was reprocessed in parallel. The primary reason for the monitor data set was to observe the reservoir pressure depletion state around a water-flooding project. Furthermore there was a need to improve the