Fixed cutter drill bit with non-cutting erosion resistant inserts
AssigneeReedHycalog, L.P.
InventorsNeerali Janubhai Desai, Jiinjen Albert Sue
Life of this patent
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Abstract
The present invention is directed to a drill bit with non-cutting erosion resistant inserts. In one illustrative embodiment, the apparatus comprises a matrix drill bit body comprising a plurality of blades, a plurality of cutting elements positioned on each of the blades, the cutting elements defining a plurality of web regions, and a plurality of spaced apart, non-cutting erosion resistant inserts positioned along a face of at least one of the blades, at least a portion of each of the non-cutting erosion resistant inserts being positioned in front of one of the web regions.
Claims23
A fixed cutter drill bit, comprising:
- a matrix drill bit body comprising a plurality of blades;
- a plurality of cutting elements positioned on each of said blades, said cutting elements defining a plurality of web regions;
- and
- a plurality of spaced apart, non-cutting erosion resistant inserts positioned along a face of at least one of said blades, at least a portion of each of said non-cutting erosion resistant inserts being positioned in front of one of said web regions.
A fixed cutter drill bit, comprising:
- a matrix drill bit body comprising a plurality of blades;
- a plurality of cutting elements positioned on each of said blades, said cutting elements defining a plurality of web regions;
- and
- a plurality of spaced apart, non-cutting erosion resistant inserts positioned along a face of at least one of said blades, each of said non-cutting erosion resistant inserts being positioned in front of and approximately aligned with one of said web regions.
A method of forming a fixed cutter drill bit comprised of a plurality of blades, a plurality of cutting elements positioned along each of said blades, said cutting elements defining a plurality of web regions, the method comprising:
- providing a mold for said fixed cutter drill bit;
- positioning a plurality of spaced apart, non-cutting erosion resistant inserts in said mold such that said non-cutting erosion resistant inserts will be positioned along a face of at least one of said blades;
- positioning a plurality of plugs in said mold so as to form pockets for placement of said cutting elements;
- and
- introducing a matrix forming particulate material and a binder alloy into said mold.
Dependencies are inferred from the claim text.