[窜流专题] Matrix-fracture transfer shape factors for dual-porosity simulators

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[窜流专题] Matrix-fracture transfer shape factors for dual-porosity simulators

K. T. Lim; K. Aziz

Matrix-fracture transfer shape factors for dual-porosity simulation of naturally-fractured reservoirs were derived by combining analytical solutions of pressure diffusion for various flow geometries. The resulting equations describing the matrix-fracture flow were cast in a form similar to those proposed by Barenblatt et al. 1 and Warren and Root 2, but without making the pseudo-steady state assumption. Shape factors representing one, two and three parallel sets of fractures were obtained. A generalized matrix-fracture transfer function for a non-isotropic, rectangular matrix block was also derived. Fine-grid single-porosity and one-block dual-porosity models were used to verify the results. The results of fine-grid and one-block dual-porosity models were in good agreement. The shape factors derived in this paper are consistent with observations made in several publications on dual-porosity simulation studies.

https://doi.org/10.1016/0920-4105(95)00010-F

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