Packer locking apparatus including a time delay apparatus for lo

Details Packer locking apparatus including a time delay apparatus for lo Packer locking apparatus including a time delay apparatus for lo

1995-12-14

1997-11-18

Neuder, William P.

Wells

Processes

Placing or shifting well part

166120, E21B 2300

Patent

active

056877951

ABSTRACT:
A packer assembly adapted to be disposed in a wellbore includes a packer and a packer lock apparatus, the packer lock apparatus including a lock and release apparatus for locking the packer in an unset condition, releasing the lock on the packer which locks the packer in the unset condition when the packer is lowered into a smaller diameter casing in the wellbore, allowing the packer to begin changing from the unset condition to a set condition, and a time delay apparatus for requiring a predetermined time period to elapse, following the release by the lock and release apparatus of the lock on the packer, before the packer can be fully changed from the unset condition to the set condition. As a result, the entire packer will be disposed within the smaller diameter casing before the packer is fully set.

REFERENCES:
patent: 4989672 (1991-02-01), Burns, Sr. et al.
patent: 5058673 (1991-10-01), Muller et al.
patent: 5146983 (1992-09-01), Hromas et al.
patent: 5320183 (1994-06-01), Muller et al.

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