Casing hanger and packoff apparatus

Details Casing hanger and packoff apparatus Casing hanger and packoff apparatus

E - Fixed Constructions

21

B

166/49

E21B 43/12 (2006.01) E21B 33/04 (2006.01) E21B 33/00 (2006.01)

Patent

CA 1242641

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.

504710

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