Unloading injection control valve

Patent · Tue Nov 12 04:00:00 EST 1985

OSTI ID:5866177

Ross, R J; Speller, D J

A valving apparatus for use in controlling the fluid pressure in a subterranean well conduit and in the annulus surrounding the conduit is disclosed. The valving apparatus is shiftable between a closed position and an open position allowing flow within the tubing by the application of fluid pressure in the tubing above the valve. Pressure equalization below the valve is provided when the valve is in the closed position thus permitting the tool to be used with well tools in which annulus and tubing pressure must be equalized. A plug located within the valve prevents the flow of fluids through the conduit in either direction. An annular fluid bypass does permit flow around the plug when the valve is in the open position.

• Assignee: Baker Oil Tools, Inc.
• Patent Number(s): US 4552218
• OSTI ID: 5866177
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
HYDRAULICS
LIQUID FLOW
MECHANICS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PRESSURE CONTROL
VALVES
WELL INJECTION EQUIPMENT
WELLS