Rotary drill bit design method
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United States of America Patent
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Aug 20, 2002
Grant Date -
Mar 21, 2002
app pub date -
Sep 6, 2001
filing date -
Sep 20, 2000
priority date (Note) -
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Abstract
A method for use in designing rotary drill bits comprises determining locations in which cutters are to be provided, determining likely wear rates for cutters positioned at those locations, and using the likely wear rates to chose between relatively high and relatively low wear rate cutters for each location. The cutters all have substantially the same impact toughness.
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