Gravel packer

Patent · Tue Jan 13 04:00:00 EST 1987

OSTI ID:7001473

Zunkel, G D

A 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; ratchet 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 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 in assembly extending from the exterior of the gravel packer below the packer element to the intake passage; closeable crossover means associated with the assembly 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; first check valve means in the assembly for preventing flow to the gravel screen through the return passage; second check valve means in the assembly adapted to selectively permit flow from the return passage to the intake passage in response to a positive pressure differential between the return pass and the intake passage; and J-slot means for selectively disconnecting the crossover means from the packer assembly.

• Assignee: Halliburton Co., Duncan, OK
• Patent Number(s): US 4635716
• OSTI ID: 7001473
• 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
FLOW REGULATORS
FLUID FLOW
GRANULAR MATERIALS
INTAKE STRUCTURES
MATERIALS
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PIPES
SCREENS
VALVES
WELLS