Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1993-03-31
1994-07-26
Dang, Hoang C.
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
175431, E21B 1046
Patent
active
053320514
ABSTRACT:
The present invention relates to diamond drag bits having cylindrical polycrystalline diamond faced inserts with a convex cutting surface, the insert being imbedded in the cutting face of a drag bit. The invention teaches an optimization of the geometry of the cutting face of cutting elements, particularly of the type in which a diamond layer is adhered to a cemented carbide substrate to form a composite, and the composite is bonded to a support stud or cylinder. The convex curvature radius is maximized to the extent that the best shear action on the earthen formation is achieved. The resultant side rake angle assures that each insert remains free of detritus presenting a clean cutting edge to the formation.
REFERENCES:
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4525178 (1985-06-01), Hall
patent: 4570726 (1986-02-01), Hall
patent: 4604106 (1986-08-01), Hall et al.
patent: 4858707 (1989-08-01), Jones et al.
patent: 4872520 (1989-10-01), Nelson
patent: 4926950 (1990-05-01), Zijsling
patent: 4984642 (1991-01-01), Renard et al.
patent: 4997049 (1991-03-01), Tank et al.
Dang Hoang C.
Smith International Inc.
Upton Robert G.
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