Pack-off well apparatus with straight shear release
Patent
·
OSTI ID:5573602
This patent describes a pack-off apparatus for sealing between concentric tubular bodies in a subsurface well location. It comprises a generally cylindrical hanger body having an upper end and a lower end, the hanger body being adapted to be supported in a surrounding well casing, the hanger body having a longitudinal axis and an internal bore; an annular packing element carried about the hanger body which is radially expandable under axial compression; a setting sleeve carried about the hanger body, the setting sleeve being axially movable with respect to the packing element for compressing the packing element, the setting sleeve having an upper end adapted to contact the packing element and a lower end, the lower end of the setting sleeve being slidably received within the interior of a circumscribing member which defines a setting chamber on the exterior of the hanger body; and circumferentially spaced slips carried on the exterior of the hanger body, the slips having outer gripping surfaces adapted to grip the surrounding well casing, the slips being actuable by axial movement of the setting sleeve to grip the well casing and support the hanger body within the well casing.
- Assignee:
- Baker Hughes Inc., Houston, TX (United States)
- Patent Number(s):
- A; US 5044433
- Application Number:
- PPN: US 7-574279
- OSTI ID:
- 5573602
- Country of Publication:
- United States
- Language:
- English
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