Paper: Case Study of A Multiple Sand Waterflood, Hewitt Unit, Oklahoma

Twenty-two sands in the Hewitt Field have been simultaneously flooded by the Exxon operated Hewitt Unit and a case history of the operations is detailed in this paper. A multiple sand waterflood project requires special optimization methods to improve oil recovery. Highlighted are the injection and production surveillance proTrams and optimization methods used at the Hewitt Unit. These include injection wellbore design, injection distribution, production stimulation, polymer augmented injection, and infill drilling. Successful application of these techniques has increased the ultimate recovery from this waterflood operation.