Permeability distribution in a holocene distributary channel-fill near Leerdam, (The Netherlands)

Abstract

 understand and predict the production performance of a reservoir it may be important to know its permeability distribution in detail. The internal structure of Iayered sand bodies, such as those that result from the deposition of sands in channels, could for instance cause an overall permeability anisotropy. We have developed a method of deriving the permeability distribution in such a sand body from measurements on core samples. This method has been checked by comparing the permeability distribution deduced from measurements on samples from an actual channel-fill with that derived from flow tests in the same sand body. Our experimental data on unconsolidated distributary channel-fills show that permeability anisotropy is negligible in such sand bodies.