Cutter element with non-rectilinear crest

Details Cutter element with non-rectilinear crest Cutter element with non-rectilinear crest

1998-09-03

2000-12-19

Schoeppel, Roger

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175336, 175341, 1754201, 175430, 175432, E21B 1016

Patent

active

061616346

ABSTRACT:
A cutter element for a drill bit. The cutter element has a non-rectilinear crest. The non-rectilinear or curvilinear crest provides an advantageous distribution of the cutting forces across the body of the cutter elements and thus improves bit life. The curvilinear crest also allows the cutter element to more efficiently lift the portion of the formation that is being cut, thereby improving cutting action in certain formations. The cutter elements can have either positive or non-positive draft and can be tungsten carbide inserts.

REFERENCES:
patent: 3952815 (1976-04-01), Dysart
patent: 4150728 (1979-04-01), Garner et al.
patent: 5152194 (1992-10-01), Keshavan et al.
patent: 5172779 (1992-12-01), Siracki et al.
patent: 5265685 (1993-11-01), Keith et al.
patent: 5291807 (1994-03-01), Vanderford et al.
patent: 5542485 (1996-08-01), Pessier et al.
patent: 5579856 (1996-12-01), Bird
patent: 5743346 (1998-04-01), Flood et al.
patent: 5758733 (1998-06-01), Scott et al.
patent: 5967249 (1999-10-01), Butcher

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