Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements
Patent
1981-01-09
1983-05-10
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
Plural separable cutter elements
175375, 407 40, 407 48, E21B 1046
Patent
active
043824773
ABSTRACT:
In a rotary drilling bit having preform cutting elements, a partial or total structural discontinuity is disposed between the elements and the underlying structure or within the underlying structure to reduce the bending strain upon the preform cutting elements. In this way there is a reduction in the fracture or damage of preform cutting elements.
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Bui Thuy M.
Drilling & Service U.K. Limited
Novosad Stephen J.
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