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U.S. Department of Energy
Office of Scientific and Technical Information

Gravel packing apparatus and method

Patent ·
OSTI ID:5601946
A downhole tool is described comprising: packer means connected to a first tool string portion thereabove for packing off a portion of a well bore; valve means adjacent and secured to the packer means and connected to a second tool string portion therebelow, the valve means having an open position defining transverse passageway means extending between the interior and exterior of the valve means and a closed position; central passageway means extending longitudinally through the packer means and valve means for providing fluid communication between the first and second tool string portions; and tubular stinger means extending downwardly from the first tool string portion into the central passageway for closure thereof, for engaging the valve means and longitudinally displacing same between the open and closed positions, and for providing fluid communication between the first tool string portion and a well annulus below the packer means when the central passageway means is closed by the lower end of the stinger below the valve means, and the valve means is in the open position.
Assignee:
Halliburton Co., Duncan, OK
Patent Number(s):
US 4700777
OSTI ID:
5601946
Country of Publication:
United States
Language:
English