Production From Naturally Fissured Reservoirs Intercepted by a Vertical Hydraulic Fracture

Abstract

Summary A model is developed to simulate the behavior of naturally fissured and anisotropic reservoirs intercepted by a hydraulically induced vertical fracture of finite or infinite conductivity. The method is based on a numerical discretization of the formation, which is represented by a double-porosity model, for which transient interporosity solutions for pressure and cumulative production are presented. It is shown that matching the pressure behavior for those formations with homogeneous isotropic models leads invariably to a fracture length that is smaller than the actual fracture length.