Packing assembly for wellheads

Details Packing assembly for wellheads Packing assembly for wellheads

1980-01-14

1981-09-29

Leppink, James A.

Wells

Valves, closures or changeable restrictors

166 83, 166 88, 277 73, E21B 3302

Patent

active

042917689

ABSTRACT:
A packing assembly is mounted in the annular space between a tubing hanger and a tubing head of a wellhead assembly. The packing is bottomed on a shoulder of the tubing hanger and energized after the tubing hanger has been fully seated within the tubing head by the injection of a lubricant or the like against an upper annular piston member which compresses the packing. The piston member is locked to the tubing hanger after the packing has been compressed between the facing annular surfaces of the tubing head and tubing hanger and the entire packing assembly then moves with the tubing hanger.

REFERENCES:
patent: 572053 (1896-11-01), Garlock
patent: 2335355 (1943-11-01), Penick et al.
patent: 2652895 (1953-09-01), Arrowood
patent: 2684274 (1954-07-01), Saxon
patent: 3268243 (1966-08-01), Word, Jr.
patent: 3457992 (1969-07-01), Brown
patent: 3478822 (1969-11-01), Hulbert, Jr. et al.
patent: 3976130 (1976-08-01), Chambless et al.
patent: 4168936 (1979-09-01), Scheller et al.

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