Packer nose assembly

Details Packer nose assembly Packer nose assembly

1979-01-05

1982-05-18

Cohen, Irwin C.

Expansible chamber devices

Piston

Side wall portion includes peripheral axially extending...

92242, 166191, 166202, 277212C, F16J 908

Patent

active

043299164

ABSTRACT:
A packer nose assembly for pumping downhole equipment of the free type into and out of a tubing string located within a borehole. The assembly includes a mandrel having a lower end portion attachable to the downhole equipment and an upper end portion terminating in the form of a fishing neck. One or more packers are slidably received in a telescoping manner upon the mandrel and fixed in spaced-apart relationship respective to one another by spaced sleeves which are likewise slidably received upon the mandrel. Each packer is cylindrical in form and includes a resilient cup member which is affixed to the mandrel by a mount member. A marginal end of the cup is in the form of a lip which circumferentially extends about the mandrel and is biased into sealed engagement with the tubing wall. A marginal end of the mount member is in the form of a skirt which protects the cup member from damage.

REFERENCES:
patent: 1324272 (1919-12-01), Ryan
patent: 2080736 (1937-05-01), Nixon et al.
patent: 2377039 (1945-05-01), Reilly
patent: 2585706 (1952-02-01), Ware
patent: 3010518 (1961-11-01), Harmon
patent: 3603215 (1971-09-01), Leschisin
patent: 4165084 (1974-08-01), Kempf

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