High pressure injection valve

Patent · Tue Nov 04 04:00:00 EST 1986

OSTI ID:5394032

Lamb, C P

This patent describes a method of mounting a pressure actuated valve including a valve element and a valve body having a bore therethrough in a well comprising the steps of: positioning an axially reciprocal piston having end faces in sealing contact with the interior wall of a bore in the body of the valve to divide the bore into first and second chambers; securing a bellows between one face of the piston and a wall of the second chamber to form first and second compartments in the second chamber. Then equalizing pressure in the first and second compartments by injecting a compressible pressurized fluid into the compartments such that fluid pressure is substantially equal on opposite sides of the bellows; positioning the valve body in a well such that a flow passage through the valve body is in fluid communication with flow passages inside and outside of a tubing string and in communication with the first chamber in the bore; and changing pressure in the first chamber to axially move the piston through the bore to open the flow passage in the valve.

• Assignee: Teledyne Industries, Inc., Los Angeles, CA
• Patent Number(s): US 4620597
• OSTI ID: 5394032
• 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
BELLOWS
COMPRESSIBLE FLOW
CONTROL
CONTROL EQUIPMENT
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID FLOW
INSTALLATION
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
OPERATION
PIPES
PISTONS
POSITIONING
PRESSURE CONTROL
PRESSURIZING
RESERVOIR PRESSURE
SEALS
VALVES
WELL INJECTION EQUIPMENT
WELL PRESSURE
WELLS