Seal system for wellhead isolation tool diffuser

Details Seal system for wellhead isolation tool diffuser Seal system for wellhead isolation tool diffuser

1979-08-10

1982-02-16

Leppink, James A.

Wells

Packers or plugs

Cup type

277212C, E21B 33126

Patent

active

043155430

ABSTRACT:
A seal system for a wellhead isolation tool diffuser utilizing elastomeric cup-shaped seals installed on the exterior of the diffuser, which is inserted into the production tubing at the wellhead. After insertion of the diffuser, the production tubing is pressurized, and the seals are set against the interior of the production tubing by the pressure in the well, effecting a tight seal.

REFERENCES:
patent: 274061 (1883-03-01), Voglesong
patent: 2340466 (1944-02-01), Gosling
patent: 2352700 (1944-07-01), Ferris
patent: 2482651 (1949-09-01), Burt
patent: 2856004 (1958-10-01), Badger
patent: 3002562 (1961-10-01), Carothers
patent: 3830304 (1974-08-01), Cummins
patent: 4023814 (1977-05-01), Pitts
patent: 4111261 (1978-09-01), Oliver

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