Downhole well tool

Details Downhole well tool Downhole well tool

1984-04-23

1985-09-24

Leppink, James A.

Wells

Expansible anchor or casing

Expansible means translated by wedge or cam

166212, E21B 2304

Patent

active

045427887

ABSTRACT:
For use in servicing a completed well exposed to the possibility of upward flow, an improved tool is set forth in the preferred and illustrated embodiment. This tool is adapted to be run on a wireline to support wireline service equipment therebelow; it incorporates a set of weights which are affixed to a sleeve, the sleeve connecting with a set of serrated collet slips on a tapered cone. The tapered cone is connected with a central rod or stem which extends therebelow, telescoping in the sleeve, the two being forced to telescope by a coil spring. At the top end, the cone is connected with a fishing neck and rope socket to enable the device to be run on a wireline. If flow from the bottom of the well occurs, the tool is forced to an expanded position and thereby sets, substantially blocking the passage to limit fluid flow pass the tool.

REFERENCES:
patent: 1671223 (1928-05-01), Britton
patent: 1842116 (1932-01-01), Rasmussen
patent: 2287319 (1942-06-01), Miller
patent: 2358466 (1944-09-01), Miller
patent: 2695064 (1954-11-01), Ragan et al.
patent: 4352394 (1982-10-01), Zehren

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