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ON THE MICROSEISMIC MEDIUM RESPONSE AND POSSIBILITY OF ITS USE IN THE EXPLORATION OF HYDROCARBON FIELDS

E. A. Khogoev 1, E. E. Khogoeva 1,2, M. L. Shemyakin 2

1 A. A. Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia; 2 National Research Novosibirsk State University, Novosibirsk, Russia

The article presents spectral analysis results of microseismic noise identified on seismogram traces of standard seismic surveys on long offsets. The phenomenon of microseismic medium response is revealed, i. e. amplification of the same frequencies that are recorded in the undisturbed microseism field, namely, in the field recorded after the arrival of the main wave packet generated by the explosion. Optimal parameters of the analysis window are determined to distinguish the microseismic response of a geological medium that occurs after the propagation of waves generated by the explosion. An example of using the microseismic medium response when searching for hydrocarbon fields is given.

Keywords: passive seismic, microseisms, seismograms, seismic emission.

DOI 10.20403/2078-0575-2019-3-80-84