Page 54 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2
P. 54
42 Reservoir Engineering
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Wyllie and Gregory [46], citing their results and the results of Winsauer et
al. [45], proposed that the data for consolidated porous media could be best
described empirically by:
F, = at$-" (549)
Results of a logging study in the Brown Dolomite formation, in which the
resistivity of the mud filtrate was the same as the connate water, were used by
Owen [48] to establish a relationship between the true formation factor and
porosity. Shown in Figure 5-29 are the rerationships obtained with the equations
of Archie, Winsauer, et al., and Tixier.
2. 4 6 810 20 40 60 80 I00
POROSITY + , V0
Figure 5-29. Formation factor vs. porosity from logs of Brown Dolomite
formation [48].
