A conventional waterflood of the Richardson Berea sandstone will yield a much greater than forecasted oil recovery. The very low permeability upper portion of the sandstone was ever considered pay but obviously a large portion of the recovery in the waterflood came from this "non-pay". Similar situations may exist in other oil fields, especially old or lugged oil fields that may present economical future development potential.

You can access this article if you purchase or spend a download.