000			01848nab a2200181 4500
005			20260520001747.0
008			260224s2009 xxu
245	0	0	_aPore geometrical model for the resistivity of brine saturated rocks
260			_a _b _cabril. 2009
270			_a2009-05-11 ; 2009-05-11
300			_a10 p. ; 113-122
520			_aTranscripción del resúmen publicado por el autor: In this paper, a theoretical pore geometrical model to mimic a porous body that is fully brine saturated was developed. Analytical equations for porosity and formation resistivity factor, which govern the flow of electricity through the model were derived with no adjustable parameters. The model equations were verified using finite element modelling and the results indicated that pore throat and pore void radii are the most important elements in this model. The porosity of the network model is strongly affected by pore void radius and to a lesser extent by pore throat radius, particularly when pore throat radius is small. The resistivity of the network model when it is fully brine-saturated is strongly affected by pore throat radius and cross-sectional area available to electric current flow and much of the pore void volume can be thought of as electrically dead volume. The formation resistivity factor of the proposed network model is almost entirely controlled by pore throat radius, whereas both pore throat and void radii affect cementation factor. This emphasises that formation resistivity factor and cementation factor are pore geometrical factors only, and more importantly that cementation factor is related to pore geometry rather than cementation
581			_a3-4
773	0		_tJournal of Petroleum Science & Engineering _g65
942			_cARTICULO
100	1		_aAbousrafa, E. M. _941118
999			_c169715 _d169715