Drill bit compact and method including graphene
By integrating graphene and a catalyst metal into polycrystalline diamond layers, the drilling tools achieve enhanced toughness and thermal conductivity, addressing wear and thermal expansion issues in composite materials.
US20260193746A1Pending Publication Date: 2026-07-09NAT OILWELL VARCO LP
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- NAT OILWELL VARCO LP
- Filing Date
- 2026-03-05
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing polycrystalline diamond composite materials used in drilling tools lack sufficient toughness and thermal conductivity, leading to issues with wear and thermal expansion mismatch.
Method used
Incorporation of graphene particles and a conforming catalyst metal into polycrystalline diamond layers, with asymmetric distribution based on stress and thermal demands, to enhance bonding and mechanical properties.
Benefits of technology
Improves the toughness and thermal conductivity of drilling tools, reducing wear and thermal cracking, while optimizing material distribution for cost-effectiveness.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure US20260193746A1-D00000_ABST
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.
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