Rotary drill bit
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United States of America Patent
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Jan 24, 2012
Grant Date -
Jan 28, 2010
app pub date -
Jul 24, 2009
filing date -
Jul 25, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rotary drill bit (10) is provided for drilling a hole in a subsurface formation. The bit body (12) includes a plurality of axially extending ribs (16a, b, c and d) and a flow channel between adjacent ribs. A plurality of cutting elements are fixedly mounting on a respective one of the plurality of ribs. A plurality of flow nozzles (20a, b, c and d) direct fluid to a respective one of the plurality of cutting elements to clean and cool the cutting elements.
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