Waxman-Smits equation

Schon and Georgi (2003) developed a capillary-based model for dispersed shaly sand that shows an analogy to the Waxman-Smits equation (Section 8.5.3) for electrical properties. This model (Fig. 2.32) accounts for the reduction in porosity and decrease in the pore cross-sectional area with the content of clay and the associated immobile water. Starting with Hagen-Poiseuille s law, the flow rate for a cross-section is reduced by a film of clay particles. Permeability for dispersed shaly sand can be written as a functimi of the clean sand permeability sd and the dispersed shale content Fsh... [Pg.64]

Dispersed Shaly Sand—The Waxman-Smits Equation... [Pg.334]

The Waxman-Smits equation uses the following specific terminology ... [Pg.335]

The Waxman-Smits equations for water-saturated and hydrocarbonbearing shaly rocks follow the concept of a parallel conductor of the two components electrolyte and dispersed clay contribution ... [Pg.337]

Shale properties (Rsh,BQy) Shale resistivity or shale conductivity in many practical applications is derived from the resistivity of an adjacent thick shale bed or by crossplot techniques. The property for the Waxman-Smits equation Bgv,CEC is subject of special core analysis measurements. [Pg.339]

Schon, J.H., Georgi, D.T., 2003. Dispersed shale, shaly-sand permeability—a hydraulic analog to the Waxman-Smits equation. In Presented at the SPWLA 44th Annual Logging Symposium, 22-25 June. Paper S. [Pg.483]

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