Abstract

ABSTRACT This work presents the development of a dual-permeability transient interporosity formulation for naturally fractured reservoirs that offers engineers considerable flexibility in analyzing transient pressure data. The chief advantages of our model are: (i) it permits communication of the matrix system with the wellbore, and (ii) it admits transient interporosity flow behavior in the matrix system. Presently available models can be derived as special cases of our formulation. New insights into "pseudosteady behavior" that is often attributed to naturally fractured reservoirs are provided. Alternate interpretations to the fracture skin concept are also discussed.

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