Fluid and Pressure Prediction for the Gullfaks Field Using 4D Simultaneous AVO Inversion

P207 FLUID AND PRESSURE PREDICTION FOR THE GULLFAKS FIELD USING 4D SIMULTANEOUS AVO INVERSION Abstract 1 Four vintages of AVO seismic data as three partial stacks are available covering the Gullfaks field. Approximately 200 wells have been drilled. 4D simultaneous AVO inversion was performed to directly estimate acoustic impedance and Poisson’s ratio for the baseline survey and to estimate change for the monitor surveys. Using a rock physics model for the Gullfaks field the seismic inversion results were used to predict saturation and pressure changes. Introduction The main Gullfaks field lies in block 34/10 in the northern part of the