Apparatus for pulling tools into a wellbore

Details Apparatus for pulling tools into a wellbore Apparatus for pulling tools into a wellbore

1976-06-22

1978-01-31

Faw, Jr., Price C.

Wells

Sonic device

With specific downhole feature

180 7R, 2541346, E21B 1908

Patent

active

040710866

ABSTRACT:
A pulling tool apparatus for helping equipment descend down a wellbore, such as logging tools being dropped into a deviated wellbore. A first embodiment employs a mass slidably located inside the pulling tool which is acted on so that it is propelled in an upward direction at a fast rate and then propelled in a downward direction at a slow rate so that the net effect of the moving mass on the logging cable is to pull it in a downward direction because of the reaction forces exerted on the tool itself by the moving mass. An alternative embodiment is provided wherein the mass is driven downward against a stop plate to create the downward force for the pulling tool. An additional feature to improve performance is a set of fins surrounding the outside of the pulling tool which will fold when the tool moves in a downward direction and will open up to offer resistance to motion in an upward direction.

REFERENCES:
patent: 2340959 (1949-02-01), Harth
patent: 2917762 (1959-12-01), Xenis
patent: 2974932 (1961-03-01), Xenis
patent: 3054464 (1962-09-01), Ondeck
patent: 3137483 (1964-06-01), Zinkiewicz
patent: 3957162 (1976-05-01), Soderquist

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