On the oil displacement from the cavernous fractured reservoirs at nonlinear filtration regime

Authors: N.P. Lebedinets (VNIIneft OAO)
The features of fluid filtration in cavernous fractured reservoirs are considered. It is shown that very small volumes of reservoir as compared to the total drainage area in the near well zones are characterized by nonlinear filtration regime. It is concluded that the processes of oil displacement from cavernous fractured reservoirs in real well-reservoir systems with sufficient accuracy can be characterized (and evaluated) on the basis of dependencies, obtained under the assumption of a linear filtration law observance. At the same time the deviations from Darcy's law must be considered at calculation of filtration resistance and wells interaction.
The features of fluid filtration in cavernous fractured reservoirs are considered. It is shown that very small volumes of reservoir as compared to the total drainage area in the near well zones are characterized by nonlinear filtration regime. It is concluded that the processes of oil displacement from cavernous fractured reservoirs in real well-reservoir systems with sufficient accuracy can be characterized (and evaluated) on the basis of dependencies, obtained under the assumption of a linear filtration law observance. At the same time the deviations from Darcy's law must be considered at calculation of filtration resistance and wells interaction.


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