Device for applying pulsed radial stresses to the wall of a well

Details Device for applying pulsed radial stresses to the wall of a well Device for applying pulsed radial stresses to the wall of a well

1985-05-01

1987-10-13

Kyle, Deborah L.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181106, 181119, 367911, G01V 100

Patent

active

046992405

ABSTRACT:
A device for generating pulsed radial stresses to the wall of a well by application of pulses to anchorage shoes of a body lowered in the well, at the end of a cable provided with electric power supply and signal transmission lines. The device comprises hydraulic jacks for controlling the anchorage shoes, a main hydraulic system comprising an accumulator for placing the anchorage shoes in contact with the wall of the well and an auxiliary hydraulic system comprising an accumulator for applying short pulsed radial stresses to the anchorage shoes in the anchorage position. The hydraulic systems are electrically supplied through the cable.

REFERENCES:
patent: 3221833 (1965-12-01), Malmberg
patent: 3354983 (1967-11-01), Erickson
patent: 3718205 (1973-02-01), Fair et al.
patent: 3777814 (1973-12-01), Gustavson et al.
patent: 4252210 (1981-02-01), Sodich
patent: 4380806 (1983-04-01), Waters et al.
patent: 4394754 (1983-07-01), Waters
patent: 4569412 (1986-02-01), Bouyoucos

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