CA2593951A1 - Diamond impregnated bits using a novel cutting structure - Google Patents
Diamond impregnated bits using a novel cutting structure Download PDFInfo
- Publication number
- CA2593951A1 CA2593951A1 CA002593951A CA2593951A CA2593951A1 CA 2593951 A1 CA2593951 A1 CA 2593951A1 CA 002593951 A CA002593951 A CA 002593951A CA 2593951 A CA2593951 A CA 2593951A CA 2593951 A1 CA2593951 A1 CA 2593951A1
- Authority
- CA
- Canada
- Prior art keywords
- encapsulated
- tungsten
- diamond
- combinations
- tungsten carbide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
Abstract
An insert for a drill bit that includes a plurality of encapsulated particles dispersed in a first matrix material, where the encapsulated particles include a coarse particle encapsulated within a shell, and wherein the shell comprises abrasive particles dispersed in a second matrix material is disclosed.
Claims (28)
1. An insert for a drill bit, comprising:
a plurality of encapsulated particles dispersed in a first matrix material, the encapsulated particles comprising:
a coarse particle encapsulated within a shell;
wherein the shell comprises abrasive particles dispersed in a second matrix material.
a plurality of encapsulated particles dispersed in a first matrix material, the encapsulated particles comprising:
a coarse particle encapsulated within a shell;
wherein the shell comprises abrasive particles dispersed in a second matrix material.
2. The insert of claim 1, wherein the coarse particle comprises sintered tungsten carbide-cobalt alloy, macrocrystalline tungsten carbide, cast tungsten carbide, boron nitride, natural or synthetic diamond grit, reclaimed natural or synthetic diamond grit, thermally stable polycrystalline diamond, tungsten, silicon carbide, boron carbide, aluminum oxide, tool steel, and combinations thereof
3. The insert of claim 1, wherein the abrasive particles comprise synthetic diamond, CVD
coated synthetic diamond, natural diamond, CBN, TSP, or combinations thereof.
coated synthetic diamond, natural diamond, CBN, TSP, or combinations thereof.
4. The insert of claim 1, wherein the second matrix comprises tungsten carbides, tungsten, sintered tungsten carbide-cobalt alloys, cast tungsten carbide or combinations thereof.
5. The insert of claim 1, wherein the second matrix comprises cobalt, iron, nickel, copper, and combinations thereof.
6. The insert of claim 5, wherein the second matrix further comprises a carbide or nitride of tungsten, vanadium, boron, titanium, or combinations thereof.
7. The insert of claim 1, wherein the encapsulated particles have a diameter ranging from 0.7 mm to 3.0 mm, wherein the shell has a thickness of between 0.2 to 1.0 mm, and wherein the abrasive particles range in size from 0.1 to 1.0 mm.
8. The insert of claim 1, wherein the abrasive particles comprise encapsulated diamond particles, and wherein the encapsulated diamond comprises natural or synthetic diamond encapsulated in a tungsten carbide, tungsten, a sintered tungsten carbide-cobalt alloy, cast tungsten carbide, or combinations thereof.
9. The insert of claim 1, wherein the first matrix material and the second matrix material are the same material.
10. The insert of claim 1, wherein the first matrix material and the second matrix material are different.
11. An impreg drill bit, comprising:
a bit body; and a plurality of ribs formed in the bit body;
wherein at least one rib is infiltrated with a plurality of encapsulated particles;
wherein the encapsulated particles comprise:
a coarse particle encapsulated within a shell;
wherein the shell comprises abrasive particles dispersed in a matrix material.
a bit body; and a plurality of ribs formed in the bit body;
wherein at least one rib is infiltrated with a plurality of encapsulated particles;
wherein the encapsulated particles comprise:
a coarse particle encapsulated within a shell;
wherein the shell comprises abrasive particles dispersed in a matrix material.
12. The impreg drill bit of claim 11, wherein the coarse particle comprises sintered tungsten carbide-cobalt alloy, macrocrystalline tungsten carbide, cast tungsten carbide, boron nitride, natural or synthetic diamond grit, thermally stable polycrystalline diamond, reclaimed natural or synthetic diamond grit, tungsten, silicon carbide, boron carbide, aluminum oxide, tool steel, and combinations thereof
13. The impreg drill bit of claim 11, wherein the abrasive particles comprise synthetic diamond, CVD coated synthetic diamond, natural diamond, CBN, TSP, or combinations thereof.
14. The impreg drill bit of claim 11, wherein the matrix comprises tungsten carbides, tungsten, sintered tungsten carbide-cobalt alloys, cast tungsten carbide or combinations thereof.
15. The impreg drill bit of claim 11, wherein the matrix comprises cobalt, iron, nickel, copper, and combinations thereof.
16. The impreg drill bit of claim 15, wherein the matrix further comprises a carbide or nitride of tungsten, vanadium, boron, titanium, or combinations thereof.
17. The impreg drill bit of claim 11, wherein the encapsulated particles have a diameter ranging from 0.7 mm to 3.0 mm, wherein the shell has a thickness of between 0.2 to 1.0 mm, and wherein the abrasive particles are no greater in size than 1.0 mm.
18. The impreg drill bit of claim 11, wherein the abrasive particles comprise encapsulated diamond particles, and wherein the encapsulated diamond comprises natural or synthetic diamond encapsulated in a tungsten carbide, tungsten, a sintered tungsten carbide-cobalt alloy, cast tungsten carbide, or combinations thereof.
19. The impreg drill bit of claim 11, further comprising traditional sized saw grit.
20. A method of forming a diamond-impregnated cutting structure, comprising:
encapsulating coarse particles within a shell, wherein the shell comprises abrasive particles dispersed in a first matrix material;
loading a plurality of the encapsulated particles into a mold cavity;
pre-compacting the encapsulated particles using a cold-press cycle; and heating the compacted encapsulated particles to form the diamond impregnated cutting structure.
encapsulating coarse particles within a shell, wherein the shell comprises abrasive particles dispersed in a first matrix material;
loading a plurality of the encapsulated particles into a mold cavity;
pre-compacting the encapsulated particles using a cold-press cycle; and heating the compacted encapsulated particles to form the diamond impregnated cutting structure.
21. The method of claim 20, further comprising:
loading a second matrix material into the mold cavity with the plurality of encapsulated particles.
loading a second matrix material into the mold cavity with the plurality of encapsulated particles.
22. The method of claim 20, wherein the coarse particle comprises sintered tungsten carbide-cobalt alloy, macrocrystalline tungsten carbide, cast tungsten carbide, boron nitride, natural or synthetic diamond grit, thermally stable polycrystalline diamond, reclaimed natural or synthetic diamond grit, tungsten, silicon carbide, boron carbide, aluminum oxide, tool steel, and combinations thereof.
23. The method of claim 20, wherein the abrasive particles comprise synthetic diamond, CVD coated synthetic diamond, natural diamond, CBN, TSP, or combinations thereof.
24. The method of claim 20, wherein the first matrix comprises tungsten carbides, tungsten, sintered tungsten carbide-cobalt alloys, cast tungsten carbide or combinations thereof.
25. The method of claim 20, wherein the first matrix comprises cobalt, iron, nickel, copper, and combinations thereof.
26. The method of claim 25, wherein the first matrix further comprises a carbide or nitride of tungsten, vanadium, boron, titanium, or combinations thereof.
27. The method of claim 20, wherein the encapsulated particles have a diameter of 0.7 mm or greater, wherein the shell has a thickness of between 0.2 to 1.0 mm, and wherein the abrasive particles are no greater in size than 1.0 mm.
28. The method of claim 20, wherein the abrasive particles comprise encapsulated diamond particles, and wherein the encapsulated diamond comprises natural or synthetic diamond encapsulated in a tungsten carbide, tungsten, a sintered tungsten carbide-cobalt alloy, cast tungsten carbide, or combinations thereof.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83194506P | 2006-07-19 | 2006-07-19 | |
US60/831,945 | 2006-07-19 | ||
US11/779,083 US7866419B2 (en) | 2006-07-19 | 2007-07-17 | Diamond impregnated bits using a novel cutting structure |
US11/779,083 | 2007-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2593951A1 true CA2593951A1 (en) | 2008-01-19 |
CA2593951C CA2593951C (en) | 2012-06-12 |
Family
ID=38476663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2593951A Expired - Fee Related CA2593951C (en) | 2006-07-19 | 2007-07-18 | Diamond impregnated bits using a novel cutting structure |
Country Status (3)
Country | Link |
---|---|
US (1) | US7866419B2 (en) |
CA (1) | CA2593951C (en) |
GB (1) | GB2440438B (en) |
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-
2007
- 2007-07-17 US US11/779,083 patent/US7866419B2/en not_active Expired - Fee Related
- 2007-07-18 CA CA2593951A patent/CA2593951C/en not_active Expired - Fee Related
- 2007-07-19 GB GB0714150A patent/GB2440438B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB0714150D0 (en) | 2007-08-29 |
US7866419B2 (en) | 2011-01-11 |
GB2440438B (en) | 2010-04-14 |
US20080017421A1 (en) | 2008-01-24 |
CA2593951C (en) | 2012-06-12 |
GB2440438A (en) | 2008-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20170718 |