Conditions of skin factor use when estimating the state of the critical area of formation

Authors: I.N. Ponomareva, M.B. Savchik, A.A. Erofeev (State National Research Politechnical University of Perm)
The questions assess the state of critical area of formation based on the definition of the skin factor in the processing of the pressure-build-up curve. It is shown that reliable detection of skin factor is possible with the allocation of the linear portion and an almost complete restoration of the bottomhole pressure to the value of the reservoir, or the approximation of the final plot of a linear dependence with a coefficient of determination is not lower than 0.96.


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