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NETL has developed a state-of-the-art fractured reservoir model consisting of two key components.  First, a series of fracture network generators (FRACGEN) provides detailed two- or three-dimensional representations of reservoir fracture networks. Second, a flow model (NFFLOW) simulates the interaction of the fractures with the rock matrix and the flow of gas through the fracture network to one or more boreholes.

FRACGEN/NFFLOW represents a significant advancement in the art of gas reservoir simulation by being the first model to readily simulate gas flow and drainage in fractured reservoirs with a discrete, irregular, stochastic fracture network using a large number of fractures.

The models are available through the NETL CD ordering system under the title "FRACGEN ^TM and NFFLOW ^TM Fracture-Description and Reservoir Engineering Codes for Highly Fractured Reservoirs (Release Z)".

The animation on this page displays sample output values for pressure from 22 timesteps.  The animation runs though three times.  A series of wells run diagonally across the display area.  Click here for an enlarged view that more clearly shows the well locations.

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