Dual string tubing hanger

Details Dual string tubing hanger Dual string tubing hanger

1977-02-24

1978-07-04

Leppink, James A.

Wells

Expansible anchor or casing

Liner hanger

166182, 166189, E21B 2306, E21B 33122

Patent

active

040983340

ABSTRACT:
A hanger for supporting dual tubing strings in a well casing from hanger mandrels which can swivel to facilitate threadedly connecting each mandrel to its associated tubing string. The hanger includes an orienting sleeve for receiving safety shut-off valves, the sleeve being adapted to swivel with respect to the rest of the hanger, making it easier to assemble the hanger onto the running and setting tool used for setting the hanger in the casing.

REFERENCES:
patent: 2986216 (1961-05-01), McCulloch
patent: 3223361 (1967-06-01), Lebourg
patent: 3414058 (1968-12-01), De Rochemont
patent: 3771603 (1973-11-01), Crowe
patent: 3841400 (1974-10-01), Callihan et al.

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