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Cake Filtration: Mechanism, Parameters and Modeling 275
Mud
Well
Reservoir
formation
Filter
cake
r
w
Figure 12-3. Mud-cake buildup over a wellbore sandface (after Civan, ©1999
SPE; reprinted by permission of the Society of Petroleum Engineers).
(12-47)
The carrier fluid filtration flux u c at the filter cake surface in terms of
the filtration flow rate is given by
InrJi (12-48)
