Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1998-05-04
2000-08-15
Dang, Hoang
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
761082, E21B 1046
Patent
active
061021431
ABSTRACT:
A cutting element is composed of a metal carbide stud having an outer hemispherical distal end which has a series of annular ridges. The tops of the annual ridges are substantially non-planar, i.e., curvilinear, such that the angle formed between the slope on either side is less than 120.degree.. There are no surfaces tangent to vertical on such ridges. A layer of polycrystalline superabrasive material is disposed over the annular ridges. This cutter is easily manufacturable as the metal stud can be pressed and extracted from the punch without further machining and the surface geometry of the metal stud allows for complete PCD compaction during diamond sintering.
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Bailey George E.
O'Tighearnaigh Eoin
Snyder Shelly R.
Dang Hoang
General Electric Company
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