Steam injection packer actuator and method

Patent · Tue Apr 07 04:00:00 EDT 1987

OSTI ID:6553224

Halbardier, F A

This patent describes a downhole apparatus for controlling fluid pressure in a hydraulic packer actuable from the surface by injecting fluid at a packer actuating pressure sufficient to set the packer in a subterranean petroleum recovery well subjected to temperature variations, comprising: the downhole apparatus including a first fluid chamber in fluid communication with the hydraulic packer for housing a portion of the fluid; closure means for automatically sealing the fluid in the first fluid chamber from downhole fluid exterior to the apparatus; fluid pressure compensator means including a second variable volume chamber and first movably responsive barrier means separating the first fluid chamber and the second chamber. It is movably responsive to the varying pressure of the fluid in the first chamber caused by the temperature variations for increasing the volume of the first chamber while decreasing the volume of the second chamber; accumulator means including a third variable volume chamber for housing a compressible gas and second movable fluid barrier means separating the first fluid chamber and the third chamber. It is movably responsive to the varying pressure of the fluid in the first chamber caused by the temperature variations for preventing excessive fluid pressure in the first chamber by increasing the volume of the first chamber while compressing the gas in the third chamber; and pressure release means for releasing fluid pressure from the first chamber to unset the packer.

• Assignee: Baker Oil Tools, Inc., Orange, CA
• Patent Number(s): US 4655292
• OSTI ID: 6553224
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACTUATORS
CLOSURES
CONTROL
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
HYDRAULIC FLUIDS
OIL WELLS
PACKINGS
PETROLEUM
PRESSURE CONTROL
RECOVERY
STEAM INJECTION
STIMULATION
WELL STIMULATION
WELLS
WORKING FLUIDS