High strength infiltrated matrix body using fine grain dispersions
AssigneeSmith International, Inc.
InventorsGregory T. Lockwood, Madapusi K. Keshavan, Anthony Griffo
Life of this patent
Estimating the term…
Abstract
A drill bit may include a bit body having a plurality of blades extending radially therefrom and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. The bit body has a continuous infiltration binder and a plurality of carbide particles dispersed in the continuous infiltration binder, wherein at least a portion of the plurality of carbide particles and at least a portion of the continuous infiltration binder form a first carbide matrix region, and wherein the plurality of carbide particles forming the first carbide matrix region have an average grain sizes of less than about 44 microns.
Claims36
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, the bit body comprising a continuous infiltration binder and a plurality of carbide particles dispersed in the continuous infiltration binder;
- wherein at least a portion of the plurality of carbide particles and at least a portion of the continuous infiltration binder form a first carbide matrix region, wherein the plurality of carbide particles forming the first carbide matrix region have an average grain sizes of less than about 44 microns and comprise a mean free path therebetween ranging from 0.5 to 5 microns;
- and
- at least one cutting element for engaging a formation disposed on at least one of the plurality of blades.
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, the bit body comprising:
- a continuous infiltration binder phase;
- and
- a plurality of carbide particles dispersed in the continuous infiltration binder phase to form a first carbide matrix region;
- wherein at least a portion of the plurality of carbide particles form a plurality of carbide concentrate zones distributed throughout the first carbide matrix region, and each of the plurality of carbide concentrate zones comprises a plurality of carbide grains;
- and
- wherein the continuous infiltration binder phase is a continuous phase surrounding and within the plurality of carbide concentrate zones;
- and
- at least one cutting element for engaging a formation disposed on at least one of the plurality of blades.
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, the bit body comprising:
- a continuous infiltration binder phase;
- and
- a plurality of particles dispersed in the continuous infiltration binder phase,
- wherein at least a portion of the plurality of particles form a plurality of concentrate zones;
- wherein the plurality of particles in each concentrate zone comprise a first average mean free path therebetween, and the plurality of concentrate zones comprise a second average mean free path therebetween that is larger than the first mean free path;
- and
- wherein the continuous infiltration binder phase is a continuous phase surrounding and within plurality of concentrate zones;
- and
- at least one cutting element for engaging a formation disposed on at least one of the plurality of blades.
Dependencies are inferred from the claim text.