This paper demonstrates the benefits of the application of a synergistic approach in furthering the understanding of the layered nature of the Piper Field. Core, log, FMT pressure and fluid redistribution information obtained from the eight well Piper B Redevelopment Predrilling programme are discussed. The integration of the Piper B results necessitated a reassessment of the Piper Alpha data and led to an improvement in the reservoir characterisation in terms of layer permeability definition, flow behaviour, pressure and aquifer influx. This improved understanding of the reservoir led to the definition of an initial selective completion policy for the Piper Field redevelopment. The primary objective of this policy is to reduce the potential for water override in problematic high permeability layers and thereby improve the sweep of the less prolific layers by closer targeting of injection support. Such an approach allows improved reservoir management, greater flexibility in scheduling remedial work and is oriented towards maximising ultimate recoverable reserves by optimising the sweep in individual sand layers prior to their abandonment/isolation for water shut off purposes.