A numerical simulation study was conducted to determine the optimum injector location for steamflooding steeply dipping reservoirs with five-spot pattern configurations. The model reservoir has either 20° or 45° dip, is bounded by an updip gas cap and a downdip edgewater and is steamflooded with one, two, or three five-spot patterns in the direction of dip.
The study showed that steamflood performance in dipping reservoirs can be improved by placing the injector downdip from the pattern center. The optimum injector location for most situations was found to be about halfway between the pattern center and the downdip producer row. This off-center, downdip steam injection produces the highest steamflood oil recovery among all injection locations considered in the simulation study.