Time-controlled release device for wireline conveyed tools
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United States of America Patent
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-
May 21, 2013
Grant Date -
Dec 23, 2010
app pub date -
Jun 23, 2009
filing date -
Jun 23, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A time controlled release device for down line tools includes an outer housing, a disconnect housing releasably coupled to the outer housing, and a mandrel extending longitudinally within the outer housing and the disconnect housing. In addition, the device includes a locking collet and a trigger sleeve disposed about the mandrel. Further, the device includes a first biasing spring disposed within the outer housing between the locking collet and a first shoulder of the outer housing. Still further, the device includes a release collet forming a portion of the outer housing at the distal end and a disconnect release sleeve mounted on the mandrel. Moreover, the device includes a second spring disposed within the outer housing between a second shoulder of the outer housing and a pressure piston mounted on the mandrel between the second spring and a shoulder of the mandrel. The pressure piston has a metering orifice therethrough.
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