Polycrystalline diamond compact
US-12044075-B2 · Jul 23, 2024 · US
Methods for pre-sharpening impregnated cutting structures for bits, resulting cutting structures and drill bits so equipped
US9243458B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9243458-B2 |
| Application number | US-201313779307-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 27, 2013 |
| Priority date | Feb 27, 2013 |
| Publication date | Jan 26, 2016 |
| Grant date | Jan 26, 2016 |
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Abstract
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Processes for pre-sharpening cutting structures comprising particles of superabrasive material such as diamond grit, dispersed in a metal matrix material such as cemented tungsten carbide. Matrix material may be removed from a surface of a cutting structure to a desired depth to expose superabrasive particles within the matrix material adjacent the surface, and to increase exposure of partially exposed superabrasive particles at the surface. Electrodischarge machining (EDM), laser machining, electrolytic etching and chemical etching may also be employed. Pre-sharpened cutting structures are also disclosed.
First claim
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What is claimed is: 1. A method of pre-sharpening an impregnated cutting structure for a bit for subterranean use, the impregnated cutting structure comprising superabrasive material particles dispersed in and mutually separated by a metal matrix material, the method comprising, prior to placing the impregnated cutting structure in a wellbore on the bit: selecting at least one formation engaging surface of the impregnated cutting structure; and removing a depth of the metal mat…
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- What does patent US9243458B2 cover?
- Processes for pre-sharpening cutting structures comprising particles of superabrasive material such as diamond grit, dispersed in a metal matrix material such as cemented tungsten carbide. Matrix material may be removed from a surface of a cutting structure to a desired depth to expose superabrasive particles within the matrix material adjacent the surface, and to increase exposure of partially…
- Who is the assignee on this patent?
- Baker Hughes Inc
- What technology area does this patent fall under?
- Primary CPC classification E21B10/46. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Jan 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).