Means for tensioning tubing in a wellhead assembly

Details Means for tensioning tubing in a wellhead assembly Means for tensioning tubing in a wellhead assembly

1979-08-30

1981-07-14

Callaghan, Thomas F.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

Nipple threaded to plate

166 85, 166240, 285361, F16L 3900

Patent

active

042782783

ABSTRACT:
A tubing string (86) is connected at its upper end to a hanger (42) and has its lower end anchored within an outer casing. The hanger and tubing string are lifted from a position below the wellhead assembly to tension the tubing string a desired amount. The hanger has a plurality of guide pins (90) extending from and spaced about the outer periphery of the hanger. Upon lifting of the hanger and suspended tubing string, the guide pins enter inverted J-slots (62) in the hanger bowl (30) which receive and guide the pins to a seated position on the bowl.

REFERENCES:
patent: 3011552 (1961-12-01), Rhodes et al.
patent: 3356142 (1967-12-01), Crow et al.
patent: 3500909 (1970-03-01), Beyer
patent: 4135577 (1979-01-01), Nelson et al.

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