Large bore retrievable well safety valve
This patent describes a retrievable well subsurface safety valve for controlling the fluid flow through a well conduit. It comprises: a tubular housing having an axial bore therethrough, the housing including a first means for connecting to the inside of the well conduit; a valve seat positioned on the bottom of the housing; an accurate valve closure member moving between open and closed positions relative to the valve seat for controlling the fluid flow through the bore. The valve closure member pivotally connected to the bottom of the housing; a longitudinal tubular member telescopically movable in an through the bottom of the housing for controlling the movement of the valve closure member; hydraulic piston and cylinder means in the housing connected to and actuating the tubular member; and a nose separate from the housing. The nose including a second means for connecting to the inside of the well conduit for setting the nose in the conduit below the bottom of the housing.
- Assignee:
- Camco, Inc., Houston, TX
- Patent Number(s):
- US 4854387
- Application Number:
- PPN: US 7255818A
- OSTI ID:
- 5323149
- Resource Relation:
- Patent File Date: 11 Oct 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
RELIEF VALVES
DESIGN
HYDRAULICS
NATURAL GAS WELLS
OIL WELLS
WELL RECOVERY EQUIPMENT
CONTROL EQUIPMENT
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
MECHANICS
VALVES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
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