ORIGIN AND QUANTIFICATION OF COUPLING BETWEEN RELATIVE PERMEABILITIES FOR 2-PHASE FLOWS IN POROUS-MEDIA

被引:109
作者
KALAYDJIAN, F
机构
[1] Institut Français du Pétrole, Rueil-Malmaison Cedex, 92506
关键词
Coupling; Darcy's law; porous media flows; relative permeabilities; two-phase flow;
D O I
10.1007/BF00140013
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
An extended formulation of Darcy's two-phase law is developed on the basis of Stokes' equations. It leads, through results borrowed from the thermodynamics of irreversible processes, to a matrix of relative permeabilities. Nondiagonal coefficients of this matrix are due to the viscous coupling exerted between fluid phases, while diagonal coefficients represent the contribution of both fluid phases to the total flow, as if they were alone. The coefficients of this matrix, contrary to standard relative permeabilities, do not depend on the boundary conditions imposed on two-phase flow in porous media, such as the flow rate. This formalism is validated by comparison with experimental results from tests of two-phase flow in a square cross-section capillary tube and in porous media. Coupling terms of the matrix are found to be nonnegligible compared to diagonal terms. Relationships between standard relative permeabilities and matrix coefficients are studied and lead to an experimental way to determine the new terms for two-phase flow in porous media. © 1990 Kluwer Academic Publishers.
引用
收藏
页码:215 / 229
页数:15
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