Axial-vortex jet drilling system and method
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United States of America Patent
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-
Jan 26, 1999
Grant Date -
N/A
app pub date -
Feb 20, 1996
filing date -
Feb 20, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill bit with a housing and roller cones has a high-speed fluid jet erosion system utilizing dual discharge, high-velocity, jet streams that is directed at the surface to be eroded. The jet streams are developed from a dual discharge nozzle adapted to form a first, swirling liquid jet and a second, axial liquid jet in combination therewith. When used in a shale-like formation, the bit includes a nozzle in a bowl area of the housing that sends a vortex shaped spray against the roller cones.
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Cited Art Landscape
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