Cutting element attached to downhole fixed bladed bit at a positive rake angle
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United States of America Patent
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Jun 14, 2016
Grant Date -
May 1, 2014
app pub date -
Oct 28, 2013
filing date -
Aug 11, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
In one aspect of the present invention, a downhole fixed bladed bit comprises a working surface comprising a plurality of blades converging at a center of the working surface and diverging towards a gauge of the bit, at least on blade comprising a cutting element comprising a superhard material bonded to a cemented metal carbide substrate at a non-planer interface, the cutting element being positioned at a positive rake angle, and the superhard material comprising a substantially conical geometry with an apex comprising a curvature.
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