Twin latch wireline retrieval tool
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United States of America Patent
Stats
-
Dec 4, 2012
Grant Date -
Feb 23, 2012
app pub date -
Aug 17, 2010
filing date -
Aug 17, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The retrieving tool engages an equalizing sleeve on a jar down movement while the packer or bridge plug release sleeve is held fixed with a locking dog. The initial jarring down allows the tool to engage the equalizing sleeve and pull it up subsequent to the initial engagement by jarring down. Pulling or jarring up then opens the equalizing ports while still holding the release sleeve locked using a trapped collet. A subsequent jarring down allows engagement of a second sleeve so that a subsequent pulling or jarring up moves the second sleeve away from the collet that had otherwise held the set position of the packer or bridge plug. A pull or jar force up brings up the now released packer or bridge plug.
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