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Determining the type of LL actual curve is important, as it
enables to detect the presence of reservoirs and choose the
corresponding theoretical LL curves mosaic for interpretation
actual LL curve.

а) б) в) г)
 уо  уо  уо  уо

 п
 п  зп  зп

 п
 с  с  с
L L з L з L з
 с
 п

actual cross of LL curve with coordinates (ρ w and d w); ρ w - electrical
resistivity of the washing liquid (WL), ρ r - electrical resistivity of reservoir
without penetration of the drilling fluid, ρ zp - electrical resistivity of
permeability zone

Figure 2.2 - Actual LL curves

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