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Laboratory work №1

STUDY THE PROBE OF IMAGINARY ELECTRICAL
RESISTANCE (IR) METHOD. SHAPE THE CURVES BY
IR. DETERMINE THE BOUNDARIES LAYERS AND
THEIR THICKNESS ACCORDING TO IR CURVES

1.1 Purpose of the work

To see with probes of electrical resistance method and
explore their characteristic, forms of resistance curves for various
probes, and be able to determine the boundary layers and their
thickness according to the shape of the IR curve.

1.2 Theory

Studying probes of imaginary electric resistance method

Probes of imaginary resistance method (IR) designed to
measure electrical resistance of rocks, by creating an electric field
in with the current electrodes (A, B) and measuring value
potential, potential difference, gradient potentials via electrodes M,
N.
Probe of EO method - a set of electrodes A, B, M and N,
which are located at different distances between themselves and
the isolated frame
In practice, when measuring the electrical resistance, in the
well are three electrodes A, M and N or M, A and B. The fourth
electrode B or N is on the surface at the wellhead.
Depending on the location combination electrode among
themselves probes are divided the potential gradient probes and
probes, which in turn are divided into: series; inverse; bipolar

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