4D Signal Enhancement Using Singular Value Decomposition – OWC Movement on the Nelson Field

A-11 4D SIGNAL ENHANCEMENT USING SINGULAR VALUE DECOMPOSITION – OWC MOVEMENT ON THE NELSON FIELD Summary 1 In this paper we present a new method for time-lapse signal enhancement using singular value decomposition. Singular value decomposition is used to separate a 4D signal into its constituent parts: common geology time-lapse response and noise. This signal enhancement technique is used to map out both the original and moved oil-water contact across the Nelson field. The SVD technique allows the oil-water contact to be mapped across regions which would have been missed using traditional methods. The oil-water contact is observed to move