Flow controlling apparatus

Patent · Tue Sep 10 04:00:00 EDT 1985

OSTI ID:5944872

Akkerman, N H

This application discloses apparatus in which a body means having a bore therethrough connected as part of a tubing string is packed off within a well bore, and means including a passageway in the body means bypasses the packer to connect the annulus about the tubing string above and below the packer. The packer is expanded into engagement with the well bore upon release of a means for locking it in an inoperative position, and a means for so releasing the locking means includes a piston in the passageway which in responsive to control fluid supplied through a control line in the annulus which connects with the passageway. Upon release and setting of the packer, the piston is removed from the passageway and circulation of well fluid through the connecting means between the annulus above and below the packer is controlled by a safety valve which normally closes the passageway, but which is responsive to control fluid supplied thereto through the same control line. Each of the means for connecting the control line with the passageway in order to release the packer, and alternatively establishing safety valve controlled circulation of well fluid through the connecting means comprise tools which are alternately landed within and retrieved from a pocket formed in the body means to one side of its bore.

• Assignee: AVA International Corp.
• Patent Number(s): US 4540047
• OSTI ID: 5944872
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
CONTROL EQUIPMENT
DESIGN
ENHANCED RECOVERY
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
HYDRAULICS
INJECTION
INTAKE
MECHANICS
NATURAL GAS WELLS
OIL WELLS
PACKINGS
RECOVERY
VALVES
WELL INJECTION EQUIPMENT
WELLS