INTRODUCTION

The steamflood process is a common method of enhanced oil recovery in viscous oil reservoirs. Unfortunately, steam flow directions, rates and sweep efficiency can be unpredictable in the presence of reservoir heterogeneity. These uncertainties can lead to large bypassed regions of unproduced oil, and expensive changes in injection/production well placement, intervals of perforation, and surface steam facility planning. Seismic monitoring may prove to be a valuable tool for optimizing reservoir production strategies in the presence of fluid-flow uncertainty.