Performance of Horizontal Injection-Horizontal Production Wells in a Five Spot Pattern: Experimental Approach

This article presents an experimental investigation to study the effect of horizontal injector well length on oil recovery in a five spot water flood pattern having arrays of horizontal wells. The results of this study show that breakthrough recovery increases as the length of the horizontal injection well increases. However, recoveries at 95% water cut were found to be almost the same for all the injection well lengths investigated. It is also found that the additional recoveries after water breakthrough decreases as the length of the horizontal injection well increases. This is associated with sharp increase in % water cut after breakthrough.