During the 1980's, BP Canada Resources Limited conducted field trials of the Pressure Up Blow Down (FUBD) wet combustion process in the oil sands deposits of Cold Lake, Alberta. The reservoir was first preheated by cyclic steam stimulation. The follow up FUBD process then took advantage of the narrow heated channels left behind to promote flooding towards the producing wells in an otherwise immobile reservoir.

This paper reviews the performance of the process. It embarks on the theoretical analysis of the process with the aim of identifying the monitoring parameters. The field performance is then analyzed and discussed. The evaluation shows that the process is capable of mobilizing significant quantities of oil but requires a much greater degree of control, without which it exhibits sharp declines in oil recoveries.

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