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Construction the actual curve probing is carried out on a
bilogarithmic form where the axis "X" are laid the value of probes
size in meters, and the axis "B" - the value of imaginary electrical
resistance for these probes opposite specific reservoir in ohm*m.
As a result, the actual construction of the curve may be its
various types (Fig. 2.2):
1. double layer type "a" - lowering nature, when ρ w<ρ r -
figure 2.2, a; double layer type "b" - increasing nature, when ρ w>ρ r
- Figure 2.2 b;
2. three layer type "a" - lowering nature, when ρ w<ρ zp<ρ r -
figure 2.2, c; three layer type "b" - increasing nature, when ρ w <
ρ zp > ρ r - figure 2.2 g.
For determine the actual curve type is necessary to compare
it with double-layer theoretical curves by comparing actual LL
cross with theoretical curves cross.
If the actual curve during the changes of all sizes probe
follows a similar shaped of theoretical bilayer, it is the two-layer -
such as "a" or "b" (Fig.2.3). If the increase in the size of the probe,
the actual LL curve crosses the two-layer theoretical two-layer
module increasing module:

  r , (2.4)

w

then we are dealing with a three-layer curve type "2-a":

     , (2.5)
w zp r
and if the actual curve with increasing the size of the probe,
crosses the theoretical double layer with less module (μ), we are
dealing with a three-layer type curve "3-b":

     . (2.6)
w zp r

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