Hydro-mechanical downhole tool
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United States of America Patent
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-
Sep 1, 2015
Grant Date -
Nov 15, 2012
app pub date -
Mar 7, 2012
filing date -
Mar 14, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A downhole tool includes a body supported from a running string; and a releasing assembly for releasing from set liner hanger portions of the tool to be retrieved to the surface. The releasing assembly includes a connecting member for engaging the tool with a liner hanger, a piston hydraulically moveable in response to fluid pressure within the tool body from a lock position to a release position for releasing the connecting member, and a clutch for rotationally releasing the tool body from the liner hanger. Rotation of the running string moves a nut upward along the body so that the running string may then be picked up to disengage the tool from the liner hanger.
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