G
Ratushniak A. N., Baidikov S. V. – Institute of Geophysics, Ural Branch of RAS, Ekaterinburg, the Russian Federation.
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Teplukhin V. K. – Petrotool LLC., Oktyabrsky, Republic of Bashkortostan, the Russian Federation.
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The purpose of investigating wells with electro-magnetic methods of logging in the process of drilling is the determination
of conductive properties of geological medium with the account of spatial heterogeneities: well space with drilling fluid and
enclosing rock which are intersected by the drilled well. The article fulfills the analysis of calculations of electro-magnetic
field under harmonic and impulse source regimes in the shape of magnetic dipole for cylindrically-symmetric medium
which is heterogeneous according to its specific electrical resistance. Informative parameters are introduced for electromagnetic field under harmonic and impulse source regimes, which help to determine conductive properties of
homogeneous enclosing geological medium. The possibility is examined to use inductive impulse and parametric
soundings to determine specific electric resistance of rocks with the account of conductive drilling fluid influence under
the well investigations in the process of drilling.
102 «Известия вузов. Горный журнал», № 3, 2017 ISSN 0536-1028
Key words: harmonic and impulse electro-magnetic field; inductive impulse and parametric soundings; logging in the
process of drilling.
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