METHOD OF MULTIWAVE SEISMIC PROSPECTING Russian patent published in 1995 - IPC

FIELD: seismic prospecting. SUBSTANCE: elastic vibrations are excited by vibration sources working for two sessions. During first session elastic vibrations with initial frequency ω_н and final frequency ω_x are excited starting from frequency ω_н up to upper boundary frequency ω_sb of spectrum of transverse waves. Seismic vibrations are received by groups of horizontal geophones and beginning from lower boundary frequency ω_pн of spectrum of transverse waves up to frequency ω_x by groups of vertical geophones. During second session elastic vibrations are generated within frequency range from ω_pн to ω_sb and components of seismic vibrations with polarity of one of them changed for reverse one are simultaneously received by horizontal and vertical geophones. In this case pulse seismograms are reconstructed after operation of addition-subtraction for transverse waves in frequency range from ω_н to ω_sb and for longitudinal waves in frequency range from ω_pн to ω_x. EFFECT: enhanced authenticity of results of seismic prospecting. 3 dwg