When two pore types coexist in the same reservoir, one may dominate early performance, while the second one influences long-term results. If fractures, which provide high flow capacity but limited volume, represent one of the pore systems, the initial performance may look great. If the second pore type has high porosity and low permeability, the long-term performance could also be very profitable. If the second pore system has no permeability, or contains no hydrocarbon, then the performance declines rapidly, and the field is short-lived. Our objective is to demonstrate how to use available data to predict the performance of your fractured reservoir.

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