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US 12,584,199 B2Granted
Drill bit compact and method including graphene
AssigneeNational Oilwell Varco, L.P.
InventorsBiju P. Kumar, Richard Rivera, Jr., Tom Scott Roberts, Brad Ivie, Richard Jordan
Life of this patent
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Abstract
A polycrystalline composite tool component and associated methods are disclosed. In one example plurality of diamond particles are coated with a conforming catalyst metal coating and a plurality of graphene particles. Various asymmetric distributions of graphene particles are shown that provide a variety of material properties.
Claims14
A composite tool component, comprising:
- a plurality of diamond particles;
- a plurality of graphene particles located within the plurality of diamond particles;
- and
- a conforming catalyst metal coating the diamond particles and the graphene particles, separately from each other, with a consistent thickness of continuous metal about both the diamond particles and the graphene particles to provide improved reaction and sintering between the plurality of diamond particles and the plurality of graphene particles as a result of more predictable reactions at contact points between particles.
1 more element
A polycrystalline diamond compact (PDC), comprising:
- a substrate;
- a polycrystalline diamond layer on one or more surface of the substrate, the polycrystalline diamond layer including:
- a plurality of diamond particles;
- a plurality of graphene particles located within the plurality of diamond particles;
- and
- a catalyst metal coating the diamond particles and the graphene particles, separately from each other, with a consistent thickness of continuous metal about both the diamond particles and the graphene particles to provide improved reaction and sintering between the plurality of diamond particles and the plurality of graphene particles as a result of more predictable reactions at contact points between particles.
3 more elements
A method of forming a composite tool, comprising:
- coating a plurality of diamond particles with a catalyst metal to form coated diamond particles including a consistent thickness of continuous metal;
- coating a plurality of graphene particles with the catalyst metal to form coated graphene particles including a consistent thickness of continuous metal;
- mixing the coated diamond particles with the graphene particles, wherein mixing the coated diamond particles with coated graphene particles includes mixing the coated diamond particles with coated 3D graphene particles;
- and
- sintering the coated diamond particles and coated graphene particles to bind the coated diamond particles and coated graphene particles together, wherein the catalyst coating provides improved reaction and sintering between the coated diamond particles and the coated graphene particles as a result of more predictable reactions at contact points between particles.
2 more elements
Dependencies are inferred from the claim text.