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US 6,719,057 B2Granted
Downhole subsurface safety valve device
AssigneeFMC Kongsberg Subsea AS
InventorJohn A Johansen
Life of this patent
Estimating the term…
Abstract
A downhole subsurface safety valve device, where an actuator is mounted on the outside of the well on the Christmas tree and the valve is operated by a mechanical transmission which may be linear (an hydraulic actuator) or rotary (an electric motor).
Claims20
A downhole subsurface safety valve device, comprising:
- a valve element (8;80) inserted in a production tubing (4) in a well a distance below the well's Christmas tree (20;40),
- an actuator (30;30′;50;50′) for operation of the valve, and
- a connecting device mechanically connecting the actuator and the valve element, wherein,
- in that the actuator (30;30′;50) is mounted on the outside of the Christmas tree and
- the connecting device (12;52) is a non-hydraulic longitudinal member which extends through the tubing's pipe hanger (3;41) and along the outside of the tubing (4).
2 more elements
A downhole subsurface safety valve device, comprising:
- a valve element inserted, in use, in a production tubing in a well at a distance below a well Christmas tree;
- a rigid non-hydraulic longitudinal member connected, at a first end, to the valve element;
- and
- an actuator connected to a second end of the rigid member,
- the actuator being mechanically linked to the valve element via the rigid member and configured to mechanically control the valve through the mechanical connection with the rigid member,
- the actuator being accessible externally to the Christmas tree.
3 more elements
A downhole subsurface safety valve device, comprising:
- a valve tube piece inserted, in use, in a well production tubing at a distance below a well Christmas tree,
- the valve tube piece comprising a valve mechanically operable to open and close off flow through the well production tubing;
- an actuator, accessible externally to the Christmas tree, for opening and closing the valve;
- and
- a non-hydraulic vertical rigid member operatively connected, at a first end, to the valve and operatively connected, at a second end, to the actuator, the rigid member mechanically linking the valve and actuator.
2 more elements
Dependencies are inferred from the claim text.