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Abstract
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A modified version of the classical diffusion equation, called the fractional diffusion equation (FDE), has
been developed to describe anomalous fluid flow through porous media. Since the FDE does not contain
the rate as the input of the well-reservoir system, in this paper, we re-develop the FDE containing both
rate (input) and pressure (output). Based on the new FDE, we show that the conventional convolution
integral can still be used to relate the rate and pressure in reservoirs with anomalous behavior. A practical
application of the convolution integral and how to use it in practice is presented using a synthetic
example.
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