Well pipe hanger with metal sealing annulus valve
Patent
·
OSTI ID:5797781
This patent describes a well pipe hanger with a metal sealing annulus closure system. It comprises an annular hanger body; means to support the hanger body within a surrounding hanger receptacle; an annular valve chamber defined by radially spaced and opposed axial surfaces within the hanger body, the chamber having two radially spaced and opposed annular metal sealing surfaces; passageway means for providing communication between the chamber and a well annulus below the hanger when the hanger body is in functional position within the hanger receptacle; an annular metal annulus valve closure element within the hanger body chamber for movement with respect thereto, the valve element having two annular metal sealing surfaces for cooperation with the chamber sealing surfaces to establish a metal-to- metal seal therebetween when the valve closure element is in its closed position; and means on the valve closure element to accept a force for mechanically moving the closure element between its open and closed positions.
- Assignee:
- FMC Corp., Chicago, IL (United States)
- Patent Number(s):
- A; US 5044432
- Application Number:
- PPN: US 7-566009
- OSTI ID:
- 5797781
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wireline downhole annulus valve
Hanger and seal assembly
Casing hanger seal assembly with diverging taper
Patent
·
Mon Feb 27 23:00:00 EST 1989
·
OSTI ID:6161656
Hanger and seal assembly
Patent
·
Tue Apr 25 00:00:00 EDT 1989
·
OSTI ID:5876061
Casing hanger seal assembly with diverging taper
Patent
·
Tue Oct 02 00:00:00 EDT 1990
·
OSTI ID:6410769