Polycrystalline diamond cutting element

Details Polycrystalline diamond cutting element Polycrystalline diamond cutting element

1996-12-27

1998-12-15

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175434, E21B 1046

Patent

active

058486577

ABSTRACT:
The present invention relates to a novel domed polycrystalline diamond cutting element wherein a hemispherical diamond layer is bonded to a tungsten carbide substrate, commonly referred to as a tungsten carbide stud. Broadly, the inventive cutting element includes a metal carbide stud having a proximal end adapted to be placed into a drill bit and a distal end portion. A layer of cutting polycrystalline abrasive material disposed over said distal end portion such that an annulus of metal carbide adjacent and above said drill bit is not covered by said abrasive material layer. The geometry of the diamond cutting element provides control of interfacial stresses and reduces fabrication costs. The diamond cutting element may contain a pattern of ridges or bumps integrally formed in the abrasive layer which ridges are designed to cause high localized stresses in the rock, thus starting a crack. By initiating cracks in localized areas, the crushing action could be performed with less force.

REFERENCES:
patent: 3136615 (1964-06-01), Bovenkerk et al.
patent: 3141746 (1964-07-01), De Lai
patent: 3233988 (1966-02-01), Wentorf, Jr. et al.
patent: 3743489 (1973-07-01), Wentorf, Jr. et al.
patent: 3745623 (1973-07-01), Wentorf, Jr. et al.
patent: 3767371 (1973-10-01), Wentorf, Jr. et al.
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4984642 (1991-01-01), Renard et al.
patent: 5154245 (1992-10-01), Waldenstrom
patent: 5329854 (1994-07-01), Komstadius et al.
patent: 5374854 (1994-12-01), Chen
patent: 5486137 (1996-01-01), Flood et al.

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