Subsurface well safety valve

Patent · Tue Jan 10 04:00:00 EST 1989

OSTI ID:6314047

Carmody, M A; Lembcke, J L

This patent describes a valve for controlling the flow in a fluid transmission conduit in a subteranean well comprising a tubular valve housing defining an axial fluid passage, a valve closure member shiftably mounted in the valve housing for movement between an open and closed position relative to the fluid passage, resilient means biasing the valve closure member to the closed position, a valve-actuator sleeve concentrically mounted within the tubular valve housing for axial movements between two positions relative to the valve closure member, in one of the positions holding the valve closure member in the open position and in the other of the two positions permitting the valve closure member to close and fluid pressure operated means for axially shifting the valve actuator sleeve to the one position.

• Assignee: Baker Oil Tools, Inc., Orange, CA
• Patent Number(s): US 4796705
• OSTI ID: 6314047
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACTUATORS
CONTROL EQUIPMENT
CYLINDERS
DESIGN
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
HYDRAULICS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
OPERATION
RELIEF VALVES
SLEEVES
VALVES
WELLS