Suspended structure for coupling seismic sources to the walls of

Details Suspended structure for coupling seismic sources to the walls of Suspended structure for coupling seismic sources to the walls of

1987-03-03

1989-04-04

Steinberger, Brian S.

Acoustics

Geophysical or subsurface exploration

Well logging

181104, 367911, G01V 140

Patent

active

048177555

ABSTRACT:
A suspended structure for coupling a seismic source to the walls of a borehole, in particular for underground prospecting purposes, the structure comprising top (14) and bottom (16) elongate plug elements having transverse dimensions substantially equal to the inside dimensions of the borehole (10), defining therebetween a substantially closed space (32), and suspension elements (30, 50) connecting the bottom plug element to the top plug element without isolating said space from the surrounding walls of the borehole, a seismic source (34) suitable for acting in said space, with the top and bottom plug elements opposing said action in the longitudinal direction of the borehole so that said action is applied essentially against the walls (10) of the borehole level with said space.
Applicable to underground prospecting together with pick-up means.

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patent: 4722417 (1988-02-01), Selsam

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