Evolution Characteristics of Permeability and Porosity of Mudding Weak Permeability Media with Nonlinear Flow

Ying Er Deng; Jing Yu; Xin Peng

doi:10.4028/www.scientific.net/AMM.580-583.893

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 580-583Evolution Characteristics of Permeability and...

Evolution Characteristics of Permeability and Porosity of Mudding Weak Permeability Media with Nonlinear Flow

Abstract:

Concepts of flow permeability, flow permeability coefficient and flow porosity were presented to investigate changes of permeability and porosity of mudding weak permeability media with nonlinear flow. Formulas of flow permeability, flow permeability coefficient and flow porosity were presented to study the evolution characteristics. Results show that permeability and porosity of mudding weak permeability media nonlinear flow increase with pressure gradient or hydraulic gradient of nonlinear flow, while permeability and porosity of high permeability media Darcy flow are constant. The results can provide a test and calculation of micro porosity with a new method and can provide engineering safety of mudding weak permeability media nonlinear flow with scientific basis.

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Periodical:

Applied Mechanics and Materials (Volumes 580-583)

Pages:

893-896

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.580-583.893

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Online since:

July 2014

Authors:

Ying Er Deng*, Jing Yu, Xin Peng

Keywords:

Evolution Characteristics, Geological Engineering, Mudding Weak Permeability Media, Nonlinear Flow, Permeability, Porosity

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