Well packer

Details Well packer Well packer

1984-12-24

1986-04-15

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166217, E21B 2300, E21B 2306

Patent

active

045821348

ABSTRACT:
A hydraulically set retrievable well packer, with dual mandrels connectable into well tubing, for sealing the tubing to and anchoring the packer body in well casing utilizing a unique C-ring slip anchoring system. The mandrels are slidably connected for limited longitudinal movement in the packer body, which eliminates tubing spacing-out and temperature length change problems. There is a separate mandrel through the packer body for conducting flow from the casing annulus below the set packer. An internal lock system is provided to retain the packer in set position. If tubing parts above the set packer, the mandrels are supported and metal-to-metal sealed in the packer preventing tubing below the packer from falling. The packer may be retrieved by cutting one or both mandrels above the packing elements and picking up to release an internal connector which allows the slips and packing element to retract and the packer to be retrieved from the well. The anchoring, sealing and releasing means of this invention may be readily adapted for use on a single or multiple mandrel well packer.

REFERENCES:
patent: 2880806 (1959-04-01), Davis
patent: 3749167 (1973-07-01), Young
patent: 3991826 (1976-11-01), Baugh
patent: 4441553 (1984-04-01), Setterberg, Jr. et al.

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