Tubing suspension system

Details Tubing suspension system Tubing suspension system

1984-08-13

1985-12-31

Novosad, Stephen J.

Wells

Above ground apparatus

With assembly or disassembly means

166384, 166319, 285140, E21B 2300, E21B 33043, E21B 43013

Patent

active

045614997

ABSTRACT:
A tubing suspension system for undersea well production operations employs a nonoriented tubing hanger having an inner body for supporting a tubing string and a landing collar for supporting the tubing hanger on a wellhead casing. The tubing hanger includes three cooperating concentric sleeve assemblies which are employed to lock and seal the tubing hanger to the wellhead housing. The outer sleeve assembly includes a locking actuator and a dual seal assembly and is separately retrievable from the remainder of the hanger assembly. A nonorienting hydraulic set running tool is employed to run the tubing hanger, set the seals, lock the tubing hanger to the wellhead casing, retrieve either the outer sleeve assembly or the entire tubing hanger. The running tool includes a hydraulically controlled actuating sleeve which carries a latch dog assembly which locks with the tubing hanger.

REFERENCES:
patent: 3693714 (1972-09-01), Baugh
patent: 4067062 (1978-01-01), Baugh
patent: 4416472 (1983-11-01), Fowler et al.
patent: 4488596 (1984-12-01), Akkerman

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