Wells – Processes – Placing or shifting well part
Patent
1996-03-25
1998-03-17
Bagnell, David J.
Wells
Processes
Placing or shifting well part
166123, 166134, E21B 2306
Patent
active
057276323
ABSTRACT:
A packer or bridge plug design is revealed that has a lock mechanism involving the interengagement of teeth. The meshing of the teeth holds the set of the sealing elements and slips of the packer or bridge plug. Release is accomplished by an application of weight which, due to relative movement of parts, allows the stress applied to the slips and sealing element to be relieved with the interengaging teeth of the lock mechanism still in place. Upon stress relief as to the slips and sealing elements, further movement cams the locking member in a manner so as to separate the interengagement of the teeth, thus completing the release. The stress-relief mechanism and the lock mechanism are part of a compact assembly which is preferably mounted above the packer or bridge plug for easy access. A pressure equalization technique involves discrete operation of an equalizing sleeve followed by at least one opposed motion before a release sleeve can be tagged for removing the plug.
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Bagnell David J.
Baker Hughes Incorporated
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