A634 and A634E Induction Conductivity Combination Tool

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Tool Description

Conductivity is the inverse of resistivity. Induction logging systems were originally designed to facilitate resistivity measurements in oil-based drilling mud, where there is no conductive medium between the tool and the formation. It is also often used in dry holes or when the borehole fluid is very fresh. The purpose is, as usual, to measure resistivity or conductivity in order to calculate porosity and to interpret lithology. Induction is useful in several types of ground investigation.

The A034 Induction, Conductivity tool is designed for the measurement of electrical conductivity of rocks in boreholes. High stability and exceptionally wide dynamic range permit precise measurements of conductivity of sand-clay layers and also mineralised water-soaked sands. The tool may be used in water filled, dry and plastic cased boreholes. The response of the probe is practically instantaneous (<0.5 s).

This tool can be manufactured to consist of either a high sensitivity or extended range conductivity measurement. The conductivity sensor can be accompanied by either a Natural Gamma or Magnetic Susceptibility sensor, which allows to measurements to be taken in the one logging run. Suitable for mineral exploration, mine development and planning.

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