Distance holder with jet deflector
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United States of America Patent
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Jul 9, 2013
Grant Date -
Apr 8, 2010
app pub date -
Mar 20, 2008
filing date -
Mar 22, 2007
priority date (Note) -
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Abstract
A distance holder for connection to, and rotation with, a drill string in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole by removing earth formation material through abrasion, comprises a chamber that is essentially rotational symmetric and which faces the earth formation material, and a jet nozzle arranged for discharging a jet of the abrasive fluid in the chamber. The chamber comprises a deflector positioned in the path of the fluid jet discharged from the jet nozzle.
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