Casing hanger and running apparatus

Details Casing hanger and running apparatus Casing hanger and running apparatus

1985-04-02

1986-09-16

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166124, 166208, E21B 4310

Patent

active

046116630

ABSTRACT:
Disclosed is a casing hanger 10 and running apparatus 16 wherein the casing hanger 10 is mechanically supported by a running thread ring 70 onto a running tool 20 for lowering into a wellhead 12, and wherein the packoff assembly 14 is held above the casing hanger 10 for circulating and cementing operations for improved flowby capabilities and wherein the packoff assembly 14 is mechanically lowered and energized to seal the annular seal area 32 comprising threading the packoff apparatus from the running apparatus 16 onto the casing hanger by rotation of the running tool 20, which concurrently also releases the casing hanger 10 from the running tool 20 by unthreading the primary thread ring 70 therefrom.

REFERENCES:
patent: 3887006 (1975-06-01), Pitts
patent: 4349071 (1982-09-01), Fish
patent: 4388971 (1983-06-01), Peterson
patent: 4478435 (1984-10-01), Cheshier et al.
patent: 4548273 (1985-10-01), Leicht et al.

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