Q. A single well encounters multiple clean sands of exactly the same thickness, porosity and permeability. Rw is the formation fluid resistivity and Rmf is the mud filtrate resistivity.
P. Rmf > Rw I. No deflection
Q. Rmf = Rw II. Positive deflection
R. Rmf < Rw III. Negative deflection
Which one of the following match the relation between Rw and Rmf to that of Self Potential (SP) log deflection?
(A) P-I, Q-III, R-II
(B) P-III, Q-I, R-II
(C) P-II, Q-I, R-III
(D) P-I, Q-II, R-III
Ans: P-III, Q-I, R-II