Since 1979 Shell Canada has operated the Peace River heavy oil field in the province of Northern Alberta. In 2002 Shell Canada started an extensive and ambitious reservoir-surveillance programme with the aim to improve the understanding of dynamic behaviour of the reservoir produced by cyclic steam stimulation. Repeated seismic time-lapse, continuous microseismic and surface tilt meter data have been acquired since late 2002, and this surveillance is continuing to date.

These areal surveillance data allow us to track the injected fluid volumes and heated parts of the reservoir. The multiplicity of many complimentary observations has allowed us to develop a new conceptual model of the dynamic behaviour of the reservoir. Significant production improvements are now being realised as a result of this study.

K.P. MARON1, S. BOURNE1, K. WIT1, P. MCGILLIVRAY2
1 Shell International Exploration and Production, Kessler Park 1, 2299 GS Rijswijk-ZH, The Netherlands, 2Shell Canada