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resistans of penetration zone - determined according to ML; q -
coefficient for residual water saturation (q = 0.75); Q - factor for
residual oil saturation (Q = 1.25); ρ f - resistance of drilling mud
fluid (ρ s) ρ f=0.75ρ s.
P
п

100

10

1
0 20 40 K ,%
п
Figure 3.1 - Dependence P p from K p

Method of self-potential

For non-clay collectors there is a direct connection between the
sp
ΔU and K p (Fig.3.2).

ПС
U ,mV

40

20

0
0 20 40 K ,%
п
Figure 3.2 - Dependence ΔUsp and K p

20