Earth boring drill bit with matrix displacing material

Details Earth boring drill bit with matrix displacing material Earth boring drill bit with matrix displacing material

1991-03-04

1992-02-25

Bui, Thuy M.

Boring or penetrating the earth

Bit or bit element

Core forming type

175410, E21B 1000

Patent

active

050904914

ABSTRACT:
A rotary drill bit for drilling earth formations is provided and includes a bit shank, a hard metal matrix secured to a blank and cutting elements on the exterior face thereof. The matrix includes a displacement material having a different composition than the matrix material within the matrix. The displacement material is preferably less expensive than the matrix material and also has different material properties. The resulting bit may be custom-engineered for toughness, ductility, and impact resistance.

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Popov, E. P., Mechanics of Materials, (second edition), Prentice-Hall, Inc., Englewood, N.J., 1976, pp. 525-527.

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