Back to results
US 2009/0260893 A1Published application
Matrix powder for matrix body fixed cutter bits
AssigneeSmith International, Inc.
InventorsXiayang Sheng, Alan W. Lockstedt, Gregory T. Lockwood
Life of this patent
Estimating the term…
Abstract
A matrix powder for forming a matrix bit body, the matrix powder essentially consisting of a plurality of carbide particles having a particle size distribution of ±20% of a median particle size; and a plurality of metal binder particles is disclosed.
Claims20
A matrix powder for forming a matrix bit body, the matrix powder essentially consisting of:
- a plurality of carbide particles having a particle size distribution of ±20% or less of a median particle size;
- and
- a plurality of metal binder particles.
A matrix powder for forming a matrix bit body, the matrix powder essentially consisting of:
- a plurality of carbide particles, wherein 90% of the plurality of carbide particles have a particle size within 20% or less of a median particle size of the plurality of carbide particles;
- and
- a plurality of metal binder particles.
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, at least a portion of the plurality of blades comprises a first matrix region comprising a plurality of first carbide particles separated by a first binder phase, wherein the plurality of first carbide particles have a mean free path of at least 40 microns;
- 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.