Drill bit having improved cutting structure with varying diamond

Details Drill bit having improved cutting structure with varying diamond Drill bit having improved cutting structure with varying diamond

1994-10-03

1997-01-14

Bagnell, David J.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175430, E21B 1058

Patent

active

055929966

ABSTRACT:
A fixed cutter drill bit includes a cutting structure having radially-spaced sets of cutter elements. Each cutter in a set has a cutting profile that, in rotated profile, partially overlaps the cutting profiles of each of the other cutters that are in the same set so as to create a region of maximum diamond density. The region of maximum diamond density in a set is defined such that the centerlines of the cutting profiles of the elements in the set pass through the region of maximum diamond density. The cutting profiles of the spaced sets of cutters also may overlap to create border regions of multiple diamond density. The diamond density of border regions is less than or equal to the density in the region of maximum diamond density. Providing such regions of varying diamond density along the bit face tends to increase the bit's ability to resist vibration and provides an aggressive cutting structure, even after significant wear has occurred.

REFERENCES:
patent: Re33757 (1991-12-01), Weaver
patent: Re34435 (1993-11-01), Warren et al.
patent: 4429755 (1984-02-01), Williamson
patent: 4444281 (1984-04-01), Schumacher et al.
patent: 4471845 (1984-09-01), Jurgens
patent: 4475606 (1984-10-01), Crow
patent: 4545441 (1985-10-01), Williamson
patent: 5033560 (1991-07-01), Sawyer et al.
patent: 5131478 (1992-07-01), Brett et al.
patent: 5178222 (1993-01-01), Jones et al.
patent: 5222566 (1993-06-01), Taylor et al.
patent: 5238075 (1993-08-01), Keith et al.
patent: 5265685 (1993-11-01), Keith et al.
patent: 5346025 (1994-09-01), Keith et al.
patent: 5377773 (1995-01-01), Tibbits

Affiliated with

Also associated with

Rating

Drill bit having improved cutting structure with varying diamond does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill bit having improved cutting structure with varying diamond, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill bit having improved cutting structure with varying diamond will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1382080