Device for generating seismic impulses inside a drilling through

Details Device for generating seismic impulses inside a drilling through Device for generating seismic impulses inside a drilling through

1984-09-21

1988-09-27

Tarcza, Thomas H.

Acoustics

Geophysical or subsurface exploration

Well logging

181121, 367911, 175 1, G01V 140

Patent

active

047735015

ABSTRACT:
Device for generating seismic impulses for, for example, seismic prospecting, inside a hole or drilling well by impact of a weight or mass falling onto a target element coupled with a wall of the hole or drilling well. The target element is bound up with a variable volume anchorage element capable of being expanded so that it strikes against the wall of the hole or drilling well and is surmounted by a guiding column along which slides a hammer or weight forming the mass. A cable lifting system and magnetic devices enable the hammer or weight to be hoisted to a particular height above the target element.

REFERENCES:
patent: 2281751 (1942-05-01), Cloud
patent: 2993553 (1961-07-01), Howes
patent: 3209854 (1965-10-01), Williams
patent: 3270832 (1966-09-01), Williams
patent: 3346066 (1967-10-01), Miller, Jr. et al.
patent: 4205731 (1980-06-01), Cholet et al.
patent: 4252210 (1981-02-01), Sodich

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