Abstract
In petroleum production, Produced Water Re-Injection (PWRI) has earned much interest among disposal methods of the produced water. However, presence of the contaminants in the produced waters usually results in formation damage in well bores and their surrounding fracture systems. In the present study, modeling of external cake formation on a fracture in unsteady-state conditions is discussed. The existing force vectors of different nature are analyzed in detail at first, as the second step force and fluid mass balances specific to the case are derived. Finally, by solving the formulated governing equations, cake thickness, permeate velocity and cross flow velocity profiles in unsteady-state conditions are obtained.
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