Well packers
There is disclosed a dual well string, hydraulically operated, retrievable packer in which one mandrel connectible with one well string is releasably connected to the body means of the packer to permit it to be lowered therewith, and the other mandrel connectible to the other well string is vertically reciprocable with respect to the body means and thus with respect to the first-mentioned mandrel. The packing element and slip assembly of the packer are supported on and carried about a first body section, and a second body section includes an expander plate which is movable relative to the first body section to expand the packing element and the slip assembly into engagement with the well bore by means of a hydraulically actuated mechanism including pistons reciprocable within cylinders formed in the first body section and connected to the expander plate by means of a pair of rods. One such rod has a through bore which permits circulation between a tubular member connected to its upper end and the annulus within the well bore beneath the packer, and the other rod has a bore which is open at its lower end to permit the supply and exhaust of hydraulic fluid to and from the cylinders.
- Assignee:
- AVA International Corp.
- Patent Number(s):
- US 4505332
- OSTI ID:
- 5550492
- Resource Relation:
- Patent File Date: Filed date 21 Oct 1982; Other Information: PAT-APPL-435675
- Country of Publication:
- United States
- Language:
- English
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