Yu.G. Astrakhantsev - Dr. Sc. (Eng.), Head of Laboratory of Borehole Geophysics, Institute of Geophysics, Urals branch of RAS (Ekaterinburg). E-mail: skvgeoph@mail.ru N.A. Beloglazova - Ph. D. (Eng.), Senior Research Scientist, Laboratory of Borehole Geophysics, Institute of Geophysics, Urals branch of RAS (Ekaterinburg). E-mail: bna408@mail.ru N.K. Mironova - Post-graduate Student, Institute of Geophysics, Urals branch of RAS (Ekaterinburg) E-mail: natka.2013@yandex.ru Yu.V. Golikov - Dr. Sc. (Geol.-Mineral.) E-mail: p12252@yandex.ru