Wells – Packers or plugs – With expanding anchor
Patent
1990-08-28
1991-09-03
Neuder, William P.
Wells
Packers or plugs
With expanding anchor
166134, E21B 33128, E21B 2306
Patent
active
050444336
ABSTRACT:
A pack-off tubing hanger is shown for use in a tubing string extending from a well surface location to a downhole location within a well casing. The hanger body includes an external packing element and gripping slips which support the hanger body within the surrounding casing. A hydraulic line communicates hydraulic pressure from the lower end of the hanger to a setting chamber to hydraulically set the packing elements and actuate the gripping slips. The tubing hanger is releasable by a straight upward pull upon the tubing string extending from the well surface to the tubing hanger.
REFERENCES:
patent: 4263968 (1981-04-01), Garner, Jr.
patent: 4311195 (1982-01-01), Mullins, II
patent: 4432417 (1984-02-01), Bowyer
patent: 4437516 (1984-03-01), Cockrell
patent: 4512399 (1985-04-01), Gano et al.
patent: 4688634 (1987-08-01), Lustig et al.
patent: 4711326 (1987-12-01), Baugh et al.
patent: 4862957 (1989-09-01), Scranton
Baker Oil Tools Safety Systems Catalog, Mar. 1989, pp. 40 and 41.
Bouldin Brett
Luke Mike A.
Mooney Frank X.
Rubbo Richard P.
Baker Hughes Incorporated
Gunter Jr. Charles D.
Neuder William P.
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