Fixed cutter drill bits with thin, integrally formed wear and er

Details Fixed cutter drill bits with thin, integrally formed wear and er Fixed cutter drill bits with thin, integrally formed wear and er

1999-03-09

2000-10-24

Lillis, Eileen D.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175340, 175374, 175393, 175424, 761082, E21B 1046, E21B 1060

Patent

active

061352187

ABSTRACT:
A fixed-cutter drill bit for boring through earth has a body made predominately of high strength steel with thin erosion and abrasion resistant surfaces integrally formed in the steel in areas likely to encounter abrasive or erosive conditions. The drill bit may be formed by a rapid solid state densification (RSSDPM) process. The drill bit combines the high strength of conventional steel bits with design freedom and hardness equal to or greater than conventional matrix bits. Due to the manner in which the hard particles, such as tungsten carbide, are integrally held in a steel matrix, aggressive fluid hydraulics may be employed with the drill bit without unduly limiting the performance of the drill bit.

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