Representation of whirl in fixed cutter drill bits
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United States of America Patent
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Nov 25, 2008
Grant Date -
Jun 28, 2007
app pub date -
Oct 12, 2006
filing date -
Oct 25, 2005
priority date (Note) -
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Abstract
Disclosed is a method of comparing the relative lateral stability among drill bits (that is, the tendency for a bit to whirl). This allows improved bit selection in applications where whirl is apparent. Because there will likely be many different acceptable bit designs produced by the above method, the comparison of the regenerative forces among these bits allows a customer to make a more informed choice between stability and other performance features among a range of bit designs.
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