Earth-boring bit with wear-resistant material

Details Earth-boring bit with wear-resistant material Earth-boring bit with wear-resistant material

1997-05-09

1999-04-06

Dang, Hoang C.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175408, E21B 1050

Patent

active

058905502

ABSTRACT:
An earth-boring bit has a bit body that is threaded at one end for connection into a drill string. At least one cantilevered bearing shaft depends inwardly and downwardly from the bit body. A cutter is mounted for rotation on each bearing shaft and includes a plurality of cutting elements arranged in generally circumferential rows. At least one wear-resistant element is secured to the bit body between the lower end of the bit body and the threaded end, the wear-resistant element being elongate or generally oblong in cross-section.

REFERENCES:
patent: 5074367 (1991-12-01), Estes
patent: 5201376 (1993-04-01), Williams
patent: 5421423 (1995-06-01), Huffstutler
patent: 5553681 (1996-09-01), Huffstutler et al.
patent: 5709278 (1998-01-01), Crawford
patent: 5722497 (1998-03-01), Gum et al.
patent: 5755301 (1998-05-01), Love et al.

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