CA2593951A1 - Diamond impregnated bits using a novel cutting structure - Google Patents

Diamond impregnated bits using a novel cutting structure Download PDF

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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
Application number
CA002593951A
Other languages
French (fr)
Other versions
CA2593951C (en
Inventor
Gregory T. Lockwood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smith International Inc
Original Assignee
Smith International Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of CA2593951A1 publication Critical patent/CA2593951A1/en
Application granted granted Critical
Publication of CA2593951C publication Critical patent/CA2593951C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02Physical 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
    • B24D3/04Physical 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
    • B24D3/06Physical 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C26/00Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56Button-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.
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.
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.
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.
21. The method of claim 20, further comprising:
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.
CA2593951A 2006-07-19 2007-07-18 Diamond impregnated bits using a novel cutting structure Expired - Fee Related CA2593951C (en)

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)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7350599B2 (en) 2004-10-18 2008-04-01 Smith International, Inc. Impregnated diamond cutting structures
US7866419B2 (en) 2006-07-19 2011-01-11 Smith International, Inc. Diamond impregnated bits using a novel cutting structure
US8069936B2 (en) * 2007-02-23 2011-12-06 Baker Hughes Incorporated Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits
GB2450177B (en) * 2007-05-18 2010-07-28 Smith International Impregnated material with variable erosion properties for rock drilling and the method to manufacture
US8517125B2 (en) * 2007-05-18 2013-08-27 Smith International, Inc. Impregnated material with variable erosion properties for rock drilling
US20090120008A1 (en) * 2007-11-09 2009-05-14 Smith International, Inc. Impregnated drill bits and methods for making the same
EP2105256A1 (en) * 2008-03-28 2009-09-30 Cedric Sheridan Method and apparatus for forming aggregate abrasive grains for use in the production of abrading or cutting tools
US8100203B2 (en) 2008-05-15 2012-01-24 Smith International, Inc. Diamond impregnated bits and method of using and manufacturing the same
US8020640B2 (en) * 2008-05-16 2011-09-20 Smith International, Inc, Impregnated drill bits and methods of manufacturing the same
US9103170B2 (en) 2008-05-16 2015-08-11 Smith International, Inc. Impregnated drill bit
US20100193255A1 (en) * 2008-08-21 2010-08-05 Stevens John H Earth-boring metal matrix rotary drill bit
US20100192475A1 (en) * 2008-08-21 2010-08-05 Stevens John H Method of making an earth-boring metal matrix rotary drill bit
WO2010080496A1 (en) * 2008-12-19 2010-07-15 S-2 Solutions, Inc. Rotating cutting tool with hollow cutting tip
US8220567B2 (en) * 2009-03-13 2012-07-17 Baker Hughes Incorporated Impregnated bit with improved grit protrusion
US8225890B2 (en) * 2009-04-21 2012-07-24 Baker Hughes Incorporated Impregnated bit with increased binder percentage
US8016057B2 (en) 2009-06-19 2011-09-13 Kennametal Inc. Erosion resistant subterranean drill bits having infiltrated metal matrix bodies
US9004199B2 (en) * 2009-06-22 2015-04-14 Smith International, Inc. Drill bits and methods of manufacturing such drill bits
US8079428B2 (en) * 2009-07-02 2011-12-20 Baker Hughes Incorporated Hardfacing materials including PCD particles, welding rods and earth-boring tools including such materials, and methods of forming and using same
AU2010279358A1 (en) * 2009-08-07 2012-03-01 Smith International, Inc. Functionally graded polycrystalline diamond insert
AU2010279295B2 (en) * 2009-08-07 2016-01-07 Smith International, Inc. Highly wear resistant diamond insert with improved transition structure
WO2011017625A2 (en) * 2009-08-07 2011-02-10 Smith International, Inc. Method of forming a thermally stable diamond cutting element
CA2770377C (en) * 2009-08-07 2017-07-25 Smith International, Inc. Polycrystalline diamond material with high toughness and high wear resistance
WO2011017673A2 (en) * 2009-08-07 2011-02-10 Smith International, Inc. Thermally stable polycrystalline diamond constructions
CA2770308C (en) * 2009-08-07 2017-11-28 Smith International, Inc. Diamond transition layer construction with improved thickness ratio
US8590646B2 (en) * 2009-09-22 2013-11-26 Longyear Tm, Inc. Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
US8950518B2 (en) * 2009-11-18 2015-02-10 Smith International, Inc. Matrix tool bodies with erosion resistant and/or wear resistant matrix materials
EP2368959A1 (en) 2010-03-23 2011-09-28 Cedric Sheridan Aggregate abrasives for abrading or cutting tools production
US20110278074A1 (en) * 2010-05-14 2011-11-17 Kaveshini Naidoo Polycrystalline diamond
EA025749B1 (en) 2011-02-10 2017-01-30 Смит Интернэшнл, Инк. Cutting structures for fixed cutter drill bit and other downhole cutting tools
RU2589786C2 (en) 2011-06-22 2016-07-10 Смит Интернэшнл, Инк. Drill bit with fixed cutters with elements for producing fragments of core
EP2766554B1 (en) * 2011-10-14 2021-03-24 Baker Hughes Holdings LLC Polycrystalline compacts including grains of hard material, earth boring tools including such compacts, and methods of forming such compacts and tools
EP2771146B1 (en) 2011-10-24 2017-08-09 Diamond Innovations, Inc. Method of braze joining a metal cutting tip to a shaft to ensure axial and angular alignment therebetween by using a plurality of elongated elements
US9464490B2 (en) 2012-05-03 2016-10-11 Smith International, Inc. Gage cutter protection for drilling bits
US9243458B2 (en) * 2013-02-27 2016-01-26 Baker Hughes Incorporated Methods for pre-sharpening impregnated cutting structures for bits, resulting cutting structures and drill bits so equipped
GB201305871D0 (en) * 2013-03-31 2013-05-15 Element Six Abrasives Sa Superhard constructions & methods of making same
ES2865302T3 (en) 2015-01-12 2021-10-15 Longyear Tm Inc Drilling tools that have dies with carbide-forming alloys, and methods of making and using them
US10071464B2 (en) 2015-01-16 2018-09-11 Kennametal Inc. Flowable composite particle and an infiltrated article and method for making the same
WO2016140675A1 (en) 2015-03-05 2016-09-09 Halliburton Energy Services, Inc. Macroscopic drill bit reinforcement
WO2017100733A1 (en) * 2015-12-11 2017-06-15 Smith International, Inc. Hardfacing material compositions
US10287824B2 (en) 2016-03-04 2019-05-14 Baker Hughes Incorporated Methods of forming polycrystalline diamond
US10570669B2 (en) * 2017-01-13 2020-02-25 Baker Hughes, A Ge Company, Llc Earth-boring tools having impregnated cutting structures and methods of forming and using the same
US11396688B2 (en) 2017-05-12 2022-07-26 Baker Hughes Holdings Llc Cutting elements, and related structures and earth-boring tools
US11292750B2 (en) 2017-05-12 2022-04-05 Baker Hughes Holdings Llc Cutting elements and structures
CN107538011B (en) * 2017-09-04 2019-05-03 中科钢研节能科技有限公司 Crystal grain refinement diamond composite teeth and preparation method thereof
US11536091B2 (en) 2018-05-30 2022-12-27 Baker Hughes Holding LLC Cutting elements, and related earth-boring tools and methods
US20220001514A1 (en) * 2018-12-18 2022-01-06 3M Innovative Properties Company Abrasive article with microparticle-coated abrasive grains

Family Cites Families (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255165A (en) * 1978-12-22 1981-03-10 General Electric Company Composite compact of interleaved polycrystalline particles and cemented carbide masses
CA1193870A (en) 1980-08-14 1985-09-24 Peter N. Tomlinson Abrasive product
US4797241A (en) * 1985-05-20 1989-01-10 Sii Megadiamond Method for producing multiple polycrystalline bodies
FR2595716B1 (en) * 1986-03-13 1992-07-10 Technogenia Sa PROCESS AND DEVICE FOR THE ELABORATION OF REFRACTORY MATERIALS BY INDUCTION
US5116568A (en) * 1986-10-20 1992-05-26 Norton Company Method for low pressure bonding of PCD bodies
EP0370199A1 (en) 1988-10-25 1990-05-30 General Electric Company Drill bits utilizing polycrystalline diamond grit
US5279374A (en) * 1990-08-17 1994-01-18 Sievers G Kelly Downhole drill bit cone with uninterrupted refractory coating
SE9004123D0 (en) 1990-12-21 1990-12-21 Sandvik Ab DIAMOND IMPREGNERATED HARD MATERIAL
US5120327A (en) * 1991-03-05 1992-06-09 Diamant-Boart Stratabit (Usa) Inc. Cutting composite formed of cemented carbide substrate and diamond layer
US5304342A (en) 1992-06-11 1994-04-19 Hall Jr H Tracy Carbide/metal composite material and a process therefor
US5452771A (en) * 1994-03-31 1995-09-26 Dresser Industries, Inc. Rotary drill bit with improved cutter and seal protection
ZA963789B (en) * 1995-05-22 1997-01-27 Sandvik Ab Metal cutting inserts having superhard abrasive boedies and methods of making same
US5598621A (en) * 1995-05-22 1997-02-04 Smith International Inc. Method of making metal cutting inserts having superhard abrasive bodies
US5524719A (en) * 1995-07-26 1996-06-11 Dennis Tool Company Internally reinforced polycrystalling abrasive insert
US5755299A (en) * 1995-08-03 1998-05-26 Dresser Industries, Inc. Hardfacing with coated diamond particles
JP3309897B2 (en) 1995-11-15 2002-07-29 住友電気工業株式会社 Ultra-hard composite member and method of manufacturing the same
US6286498B1 (en) * 1997-04-04 2001-09-11 Chien-Min Sung Metal bond diamond tools that contain uniform or patterned distribution of diamond grits and method of manufacture thereof
US6095265A (en) * 1997-08-15 2000-08-01 Smith International, Inc. Impregnated drill bits with adaptive matrix
US6170583B1 (en) * 1998-01-16 2001-01-09 Dresser Industries, Inc. Inserts and compacts having coated or encrusted cubic boron nitride particles
US6138779A (en) * 1998-01-16 2000-10-31 Dresser Industries, Inc. Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter
US6102140A (en) * 1998-01-16 2000-08-15 Dresser Industries, Inc. Inserts and compacts having coated or encrusted diamond particles
US6106957A (en) * 1998-03-19 2000-08-22 Smith International, Inc. Metal-matrix diamond or cubic boron nitride composites
US6241036B1 (en) * 1998-09-16 2001-06-05 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same
DE19844397A1 (en) * 1998-09-28 2000-03-30 Hilti Ag Abrasive cutting bodies containing diamond particles and method for producing the cutting bodies
US6394202B2 (en) * 1999-06-30 2002-05-28 Smith International, Inc. Drill bit having diamond impregnated inserts primary cutting structure
US6610113B1 (en) * 1999-09-09 2003-08-26 Kennametal Pc Inc. Process for heat treating ceramics and articles of manufacture made thereby
US6416560B1 (en) 1999-09-24 2002-07-09 3M Innovative Properties Company Fused abrasive bodies comprising an oxygen scavenger metal
US6454027B1 (en) 2000-03-09 2002-09-24 Smith International, Inc. Polycrystalline diamond carbide composites
DE60140617D1 (en) * 2000-09-20 2010-01-07 Camco Int Uk Ltd POLYCRYSTALLINE DIAMOND WITH A SURFACE ENRICHED ON CATALYST MATERIAL
US20020095875A1 (en) 2000-12-04 2002-07-25 D'evelyn Mark Philip Abrasive diamond composite and method of making thereof
RU2216435C1 (en) 2002-09-23 2003-11-20 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт природных, синтетических алмазов и инструмента" Method for making diamond cutting members
US7261752B2 (en) 2002-09-24 2007-08-28 Chien-Min Sung Molten braze-coated superabrasive particles and associated methods
US20060059785A1 (en) 2002-09-24 2006-03-23 Chien-Min Sung Methods of maximizing retention of superabrasive particles in a metal matrix
US20060213128A1 (en) * 2002-09-24 2006-09-28 Chien-Min Sung Methods of maximizing retention of superabrasive particles in a metal matrix
US7048081B2 (en) * 2003-05-28 2006-05-23 Baker Hughes Incorporated Superabrasive cutting element having an asperital cutting face and drill bit so equipped
US20050230150A1 (en) 2003-08-28 2005-10-20 Smith International, Inc. Coated diamonds for use in impregnated diamond bits
US7303030B2 (en) * 2003-11-25 2007-12-04 Smith International, Inc. Barrier coated granules for improved hardfacing material
GB2443574B (en) 2004-10-18 2008-09-03 Smith International Impregnated diamond cutting structures
US7350599B2 (en) * 2004-10-18 2008-04-01 Smith International, Inc. Impregnated diamond cutting structures
GB2436974B (en) 2004-10-18 2008-04-30 Smith International Impregnated diamond cutting structures
US7497280B2 (en) * 2005-01-27 2009-03-03 Baker Hughes Incorporated Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same
US7866419B2 (en) 2006-07-19 2011-01-11 Smith International, Inc. Diamond impregnated bits using a novel cutting structure
US7810588B2 (en) 2007-02-23 2010-10-12 Baker Hughes Incorporated Multi-layer encapsulation of diamond grit for use in earth-boring bits
US8517125B2 (en) * 2007-05-18 2013-08-27 Smith International, Inc. Impregnated material with variable erosion properties for rock drilling
GB2450177B (en) 2007-05-18 2010-07-28 Smith International Impregnated material with variable erosion properties for rock drilling and the method to manufacture
US20090120008A1 (en) 2007-11-09 2009-05-14 Smith International, Inc. Impregnated drill bits and methods for making the same

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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