Device provided with retractable arms for the anchoring of an in

Details Device provided with retractable arms for the anchoring of an in Device provided with retractable arms for the anchoring of an in

1982-03-09

1984-01-31

Leppink, James A.

Wells

Expansible anchor or casing

Fluid pressure actuated

166 53, 405302, 60473, E21B 2300

Patent

active

044284225

ABSTRACT:
A retractable anchoring device for a sonde to be lowered into a well for logging purpose, is adapted to rigidly position the sonde at a preselected depth. The device comprises pivotable anchoring arms adapted to apply against the wall of the well a substantially constant force produced by associated jacks actuated by driving means so as to apply to the respective arms forces which are limited by specific valves therefor in the hydraulic circuit feeding of the jacks.

REFERENCES:
patent: 3104712 (1963-09-01), Whitten
patent: 3356146 (1967-12-01), Anderson
patent: 3430698 (1969-03-01), Urbanosky
patent: 3661205 (1972-05-01), Belorgey
patent: 4191498 (1980-03-01), Weirich et al.

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