Retrievable bridge plug
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 24, 1984
Grant Date -
N/A
app pub date -
Nov 9, 1981
filing date -
Nov 9, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A retrievable bridge plug of the type having upper and lower anchors and an elastomeric packer for sealing a well casing. Drill string manipulation of the plug body effects packer compression and sealing. A ratchet maintains packer compression when engaged and permits packer expansion when disengaged. A cam surface on the plug body engages and disengages the ratchet responsive to longitudinal movement of the plug body.
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