Improved Reservoir Description of the Nelson Field Via Seismic History Matching

Accurate description of current reservoir conditions and an understanding of parameter uncertainty are important factors for forecasting and decision making in reservoir management. In the Nelson field we use time lapse (4D) seismic as part of history matching to improve the reservoir description with success in a number of regions of the reservoir. We change permeability, net:gross and fault transmissibilities as well as the representation of fault geometries via cell connections so that our model better matches six years of observed data. The result is improved confidence in predictions with better in-fill well targeting.