Wellhead isolation tool nipple

Details Wellhead isolation tool nipple Wellhead isolation tool nipple

1990-08-15

1991-10-29

Novosad, Stephen J.

Wells

Packers or plugs

Cup type

166 77, 166387, E21B 2306, E21B 33126

Patent

active

050607235

ABSTRACT:
A wellhead servicing tool is disclosed which comprises an axially shiftable cup which, in one position, virtually entirely surrounds the seal of the tool to facilitate its insertion into the casing of the wellhead. In another extreme position, the cup is shifted away from the seal releasing the latter into sealing engagement with the casing. A telescoping assembly extensible over the main tube of the device reinforces the tube prior to and during the securement to the casing to be serviced thus further facilitating the insertion of the tool into the casing of the services wellhead.

REFERENCES:
patent: 2606618 (1952-08-01), Page
patent: 2767795 (1956-10-01), Bush
patent: 2927642 (1955-08-01), Meredith, Jr. et al.
patent: 2927643 (1960-03-01), Dellinger
patent: 3100015 (1963-08-01), Regan
patent: 3215203 (1965-11-01), Sizer
patent: 3566962 (1971-03-01), Pease, Jr. et al.
patent: 3830304 (1974-08-01), Cummins
patent: 4162704 (1979-07-01), Gunther
patent: 4632183 (1986-12-01), McLeod
patent: 4657075 (1987-04-01), McLeod

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