Deadweight dropping type wave source

Details Deadweight dropping type wave source Deadweight dropping type wave source

1995-01-27

1996-07-09

Lobo, Ian J.

Acoustics

Geophysical or subsurface exploration

Well logging

181121, 175 1, G01V 102, G01V 1147, G01V 140

Patent

active

055346685

ABSTRACT:
In a bore holes, a plurality of resilient members and plates are piled up alternately to form a laminate, and a deadweight is dropped onto the laminate. The resilient members are deformed due to the impact force of the dropped deadweight to cause bore hole water among the plates to be forced out in the outward direction, and elastic waves to occur in the bore hole wall.

REFERENCES:
patent: 4252210 (1981-02-01), Sodich
patent: 4383591 (1983-05-01), Ogura
patent: 4648478 (1987-03-01), Dedole et al.
patent: 4671379 (1987-06-01), Kennedy et al.
patent: 4773501 (1988-09-01), Dedole et al.
patent: 4796723 (1989-01-01), Laurent et al.
patent: 4830927 (1989-05-01), Fukahori et al.
patent: 5416281 (1995-05-01), Ogura

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