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SUR LA CORRELATION EXISTANT ENTRE POROSITE ET FAGTEUR DE FORMATION DANS LES SEDIMENTS NON CONSOLIDES*
- Source: Geophysical Prospecting, Volume 18, Issue 4, Oct 1970, p. 505 - 515
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- 27 Apr 2006
Abstract
The relationship between porosity and formation factor in unconsolidated homogeneous and anisotropic sediments without granule‐liquid interaction is investigated by introducing a parametric model that simulates a variable cellular structure.
In this hypothesis, porosity φ and F‐factor are calculated for some fixed values of the parameter, solving numerically two integral expressions.
From these calculations the form of the function φ=f(F), corresponding to the proposed model, has been deduced. This relation is in very good agreement with Archie's empirical law for unconsolidated sands which requires that F=φ‐‐1,3. Therefore it seems that the validity of Archie's law is theoretically confirmed for the unconsolidated sediments considered in this paper.