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а) б)
від
J  n J  n
2.0 1.0
1.8 0.8

1.6 0.6
1.4 0.4

1.2 0.2
1.0
п
п
20 40 K ,% 0 20 40 K ,%
Figure 3.5 - Dependence I nγ (a) and ΔI nγ (b) from K p

Considering that absolute value I nγ also depends from other
factors, it is advisable to use the relative value of the radiating
gamma-rays (Fig.3.5b):

I x  n  I min
 n
I   1, (3.4)
 n max min
I  I
 n  n

x
where I nγ - intensity of caused gamma radiation for the reservoir
max/min
with unknown value of K p; I nγ - intensity of caused gamma
radiation for supporting layers with known value of K p
(respectively maximum and minimum).

Method AL

The speed of propagation of elastic waves in rocks has a
direct relationship with the density of rocks and inverse with K p
(Fig.3.6a,b).

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