Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1997-07-11
1999-11-09
Neuder, William
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
175428, E21B 1046
Patent
active
059795794
ABSTRACT:
A cutting element is provided for use with drill used in the drilling and boring through subterranean formations. This new cutter has improved wear characteristics while maximizing the manufacturability and cost effectiveness of the cutter. This invention accomplishes these objectives by incorporating a single chamfer of increased size. This chamfer is introduced on the periphery of the abrasive cutting face of the cutter. This chamfer has been found to reduce the tensile stress within the cutter, which tensile stress is primarily responsible for spalling and delamination of the abrasive layer of the cutter.
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Neuder William
Sadler Lloyd W.
U.S. Synthetic Corporation
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