Tool for lowering into centered position within a well bore

Details Tool for lowering into centered position within a well bore Tool for lowering into centered position within a well bore

1986-10-06

1988-10-11

Massie IV, Jerome

Wells

Guide for device or conduit

On sucker or pump rod

175325, E21B 1710

Patent

active

047763973

ABSTRACT:
There is disclosed a tool which is adapted to be lowered and raised through a well conduit into and out of a centered position within a well bore beneath the lower end of the conduit. The tool has arms which are spring pressed toward outer positions for engaging the well bore, but held in inner positions in which they may move vertically through the well conduit until the tool has been lowered into a bore near the lower end of the well conduit, and then returned to and reheld in such position upon raising of the tool above the bore during retrieval of the tool.

REFERENCES:
patent: 3915229 (1975-10-01), Nicolas
patent: 3978924 (1976-09-01), Roesner
patent: 4557327 (1985-12-01), Kinley et al.
patent: 4619322 (1986-10-01), Armell et al.

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