Twin seal well packer

Details Twin seal well packer Twin seal well packer

1985-09-17

1987-04-14

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166120, 166134, E21B 2300

Patent

active

046570845

ABSTRACT:
A well packer is shown of the type having a packer head and a pair of tubular extending downwardly therefrom. An upper seal, a gripping assembly, a lower seal and a lock body are all located about the mandrels extending successively downwardly from the packer head. An actuator within the lock body is provided for effecting outward radial movement of the seals and gripping assembly to seal and grip a surrounding well conduit. A push rod extending from the lock body through the lower seal to the gripping assembly moves the gripping assembly, as a unit, in the direction of the upper seal to compress the upper seal before the lower seal is compresed. A tie rod extends from the packer head through the upper seal to the gripping assembly and carries a locking mechanism which allows unidirectional movement of the gripping assembly with respect to the upper seal whereby sealing force applied to the upper seal from the gripping assembly is locked into the upper seal.

REFERENCES:
patent: 3106961 (1963-10-01), Bigelow
patent: 4373584 (1983-02-01), Silberman et al.
patent: 4375240 (1983-03-01), Baugh et al.
patent: 4413677 (1983-11-01), Perkins
patent: 4505332 (1985-03-01), Mills et al.
C6-80-062 "Twin Seal Submersible Pump Packer".

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