THEORETICAL AND EXPERIMENTAL VALIDATION OF SEISMOELECTRICAL METHOD

Abstract

The main aim of this study is a theoretical and experimental validation of the method based on
a recording of the seismoelectrical effect upon excitation of seismic fields by the special non-explosive striker
and without an additional source of the electromagnetic field. Signals of seismic and electrical fields were
recorded using earthed electric dipoles and seismic receiver with subsequent processing using seismic
acquisition system. The frequencies of recorded fields were in the range of 0.1–20 Hz. The observation results
of seismoelectrical effect resulted from excitation of the geologicalsection by seismic shocks (a KEM-4 striker)
and recording of secondary electrical and seismic fields on the surface by measurements of their crosscorrelation function. The activities were performed during July 23–30, 2017 on Bystryansky gas condensate
field (Krasnoyarsk Krai, Minusinsk district). The productive deposit was indicated by the maximum coefficient
of cross-correlation by three times higher than normal background. 3D maps of the seismoelectrical section
were obtained for the first time.