Permeability Estimates of Self-Affine Fracture Faults Based on Generalization of the Bottle Neck Concept

Details Permeability Estimates of Self-Affine Fracture Faults Based on Generalization of the Bottle Neck Concept Permeability Estimates of Self-Affine Fracture Faults Based on Generalization of the Bottle Neck Concept

2010-04-07

arxiv.org/abs/1004.1012v1

Water Resources Research 46 (2010) W07601

Physics

Fluid Dynamics

Scientific paper

10.1029/2009WR008404

We propose a method for calculating the effective permeability of two-dimensional self-affine permeability fields based on generalizing the one-dimensional concept of a bottleneck. We test the method on fracture faults where the local permeability field is given by the cube of the aperture field. The method remains accurate even when there is substantial mechanical overlap between the two fracture surfaces. The computational efficiency of the method is comparable to calculating a simple average and is more than two orders of magnitude faster than solving the Reynolds equations using a finite-difference scheme.

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