Sequential remote control plug release system
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United States of America Patent
Stats
-
Aug 20, 1991
Grant Date -
N/A
app pub date -
Apr 30, 1990
filing date -
Apr 30, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sequential remote control plug release system allows actuation of plug release plungers and manifold valves associated with a cementing plug container only in a predetermined sequence. With regard to a plug container having two plugs, and thus two plug release plungers, and three manifold valves, the middle and upper manifold valves and the upper plug release plunger can be opened and retracted only in a predetermined sequence. This is implemented through interconnected actuation valves and sequencing valves contained in a housing which can be located remotely from the plug container. An improvement in plug release plungers is also disclosed.
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