Results 211 to 220 of about 5,341 (265)

Relationships for Non-Darcy Flow in Rockfill

Journal of Hydraulic Engineering, 1998
This paper describes a synthesis of various studies on non-Darcy flow in rockfill material. Based on pipe theory and Taylor's (1948) definition for mean hydraulics radius in rockfill material, theoretical relationships between friction coefficient and Reynolds number and relationships between hydraulic gradient and bulk seepage velocity have been ...
Bingjun Li, Vinod K. Garga, Michael H. Davies   +2 more
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Correlation of the Non-Darcy Flow Coefficient

Journal of Canadian Petroleum Technology, 1995
Abstract A general correlation for the non-Darcy flow coefficient with respect to permeability, porosity, and tortuosity using a wide variety of dam from consolidated and unconsolidated porous formations is presented.
X. Liu, F. Civan, R.D. Evans
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Semianalytical Model for Reservoirs With Forchheimer's Non-Darcy Flow

SPE Gas Technology Symposium, 2006
Abstract This paper presents a semi-analytical model to investigate the effect of Forchheimer's non-Darcy flow on the transient pressure behavior of vertical well in an infinite homogeneous reservoir. This model uses the Forchheimer number, defined as the product of the reservoir non-Darcy flow coefficient and a reference rate, to ...
Fanhua Zeng, Gang Zhao
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Some remarks on non-Darcy flow

Journal of Hydrology, 1966
Abstract Results of recent experiments on non-Darcy behaviour in clays are found to be in apparent disagreement and contain deficiencies of an experimental and theoretical nature. These deficiencies are pointed out and proposals are made on ways to overcome them.
Richard Kraft, Daniel Yaakobi
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Non-Darcy-Flow Studies in Anisotropie Porous Media

SPE Journal, 1999
Summary The velocity-pressure drop relationship in the near-wellbore region of high capacity gas and condensate reservoirs often deviates from Darcy's law. Furthermore, many naturally occurring porous media are anisotropic and often layered.
J. Cooper, Xiuli Wang, K. Mohanty
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Effect of Heterogeneity on the Non-Darcy Flow Coefficient

SPE Gas Technology Symposium, 1998
Abstract An analytical method for calculating an effective non-Darcy flow coefficient for a heterogeneous formation is presented. The method presented here can be used to calculate an effective non-Darcy flow coefficient for heterogeneous gridblocks in reservoir simulators. Based on this method, it is shown that the
Ganesh Narayanaswamy, Mukul M. Sharma, G. A. Pope   +2 more
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Multiphase Non-Darcy Flow in Proppant Packs

Proceedings of SPE Annual Technical Conference and Exhibition, 2007
Summary This paper builds on a model for single-phase, non-Darcy flow in porous media presented in by Barree and Conway (2004). In this work, the generalized equation for single-phase non-Darcy flow is extended to multiphase-flow conditions.
R. D. Barree, M. W. Conway
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Non-Darcy Flow in Hydraulic Fractures

Journal of Petroleum Technology, 2006
This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 96389, "Non-Darcy Flow in Hydraulic Fractures: Does It Really Matter?," by J.L. Miskimins, SPE, and H.D. Lopez-Hernandez, SPE, Colorado School of Mines, and R.D. Barree, SPE, Barree and Assocs.
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Experimental Investigation of Non-Darcy Flow in Sandstone

Geotechnical and Geological Engineering, 2016
A study was conducted to investigate non-Darcy flow for sandstone using an experimental system designed and constructed by the research group. Non-Darcy flow was found to exist for both the pre-peak and post-peak strains; post-peak flow behavior showed a higher level of non-Darcy flow.
Xiaoyan Ni, Pinnaduwa H. S. W. Kulatilake, Zhanqing Chen, Peng Gong, Hailing Kong   +4 more
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Variational Approach to Non-Darcy Flow

Journal of the Hydraulics Division, 1970
The principles of variational calculus are applied to solve the nonlinear partial differential equation for steady and unsteady unconfined non-Darcy flow through porous media. A functional is proposed which will yield solutions for the laminar, transitional and turbulent flow regimes.
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