Drill bit with forward sweep cutting elements

Details Drill bit with forward sweep cutting elements Drill bit with forward sweep cutting elements

1994-07-11

1995-08-22

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175432, E21B 1046

Patent

active

054435650

ABSTRACT:
A drill bit characterized by a body fitted with multiple, spaced blades having a forward sweep relative to the center of the bit and cutting elements embedded in the blades at a selected back rake and side rake. In a preferred embodiment the cutting elements are cylindrical and are shaped to define first and second bevelled cutting edges disposed at selected bevel angles with respect to the sides of the cutting elements. The cutting elements are strategically located in the respective blades in desired forward sweep, back rake and side rake configurations to facilitate optimum cutting efficiency and channelling of drilling fluid pumped through the drill bit around the blades and cutting elements to clear the cutting elements of formation cuttings in an optimum manner.

REFERENCES:
patent: 4942933 (1990-07-01), Barr et al.
Hycalog Brochure-DS71H Bit-1993.

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