Device to move density logging tool against well wall

Details Device to move density logging tool against well wall Device to move density logging tool against well wall

1977-04-19

1978-10-17

Purser, Ernest R.

Wells

With electrical means

166113, E21B 4708

Patent

active

041203534

ABSTRACT:
A wellbore logging instrument is disclosed of the type having a density pad maintained in close proximity to the tool body, and a decentralizing arm pivotally mounted on the body and arranged to swing outward against the borehole to move the tool body and density pad against the opposite borehole wall. The apparatus includes a linkage assembly to provide a slight extension of the density pad at any selected time in the borehole.

REFERENCES:
patent: 1406350 (1922-02-01), Corrigan
patent: 2500785 (1950-03-01), Arutunoff
patent: 2563284 (1951-08-01), Seay, Jr.
patent: 3168141 (1965-02-01), Lebourg
patent: 3356146 (1967-12-01), Anderson
patent: 3661205 (1972-05-01), Belorgey

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