Gravel packer

Patent · Mon Jan 06 04:00:00 EST 1986

OSTI ID:7126292

Zunkel, G D

A retrievable gravel packer is described for placing a gravel pack in a wellbore about a gravel screen disposed therebelow across a producing formation comprising: a gravel packer assembly; a packer element disposed on the exterior of the assembly; means in the assembly for selectively maintaining the packer element in an unset mode; means in the assembly for releasably locking the packer element in a set mode; an intake passage in the assembly for receiving fluid from a tubing string in the well bore above and secured to the gravel packer; a return passage in the assembly for receiving fluid from the interior of the gravel screen; a circulation passage extending from the exterior of the gravel packer assembly below the packer element to the intake passage; closeable crossover means to receive fluid from the return passage and guide the received fluid from the return passage to the exterior of the assembly above the packer element; relief ports between the intake passage and the return passage; first valve means for closing the intake passage from the circulation passage; second valve means for opening communication through the relief ports; a check ball at the lower end of the gravel packer; and check ball release means for selectively releasing the check ball from the gravel packer.

• Assignee: Halliburton Co., Duncan, OK
• Patent Number(s): US 4633943
• OSTI ID: 7126292
• 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 EQUIPMENT
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FABRICATION
FASTENING
FLOW REGULATORS
FLUID FLOW
INSTALLATION
INTAKE STRUCTURES
JOINING
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PIPES
SCREENS
VALVES
WELL COMPLETION
WELLS