WO2011022474A3 - Method of forming polystalline diamond elements, polycrystalline diamond elements, and earth boring tools carrying such polycrystalline diamond elements - Google Patents

Method of forming polystalline diamond elements, polycrystalline diamond elements, and earth boring tools carrying such polycrystalline diamond elements Download PDF

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Publication number
WO2011022474A3
WO2011022474A3 PCT/US2010/045878 US2010045878W WO2011022474A3 WO 2011022474 A3 WO2011022474 A3 WO 2011022474A3 US 2010045878 W US2010045878 W US 2010045878W WO 2011022474 A3 WO2011022474 A3 WO 2011022474A3
Authority
WO
WIPO (PCT)
Prior art keywords
polycrystalline diamond
diamond elements
forming
elements
polystalline
Prior art date
Application number
PCT/US2010/045878
Other languages
French (fr)
Other versions
WO2011022474A2 (en
WO2011022474A4 (en
Inventor
Danny E. Scott
L. Allen Sinor
Original Assignee
Baker Hughes Incorporated
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 Baker Hughes Incorporated filed Critical Baker Hughes Incorporated
Priority to CA2770847A priority Critical patent/CA2770847A1/en
Priority to EP10810541.2A priority patent/EP2467558A4/en
Publication of WO2011022474A2 publication Critical patent/WO2011022474A2/en
Publication of WO2011022474A3 publication Critical patent/WO2011022474A3/en
Publication of WO2011022474A4 publication Critical patent/WO2011022474A4/en
Priority to ZA2012/01225A priority patent/ZA201201225B/en

Links

Classifications

    • 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
    • E21B10/567Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/06Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
    • B01J3/062Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/14Both compacting and sintering simultaneously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00Subject matter not provided for in other groups of this subclass
    • B24D99/005Segments of abrasive wheels
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00Processes utilising sub- or super atmospheric pressure
    • B01J2203/06High pressure synthesis
    • B01J2203/0605Composition of the material to be processed
    • B01J2203/062Diamond
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00Processes utilising sub- or super atmospheric pressure
    • B01J2203/06High pressure synthesis
    • B01J2203/065Composition of the material produced
    • B01J2203/0655Diamond
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00Processes utilising sub- or super atmospheric pressure
    • B01J2203/06High pressure synthesis
    • B01J2203/0675Structural or physico-chemical features of the materials processed
    • B01J2203/0685Crystal sintering
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/30Self-sustaining carbon mass or layer with impregnant or other layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Earth Drilling (AREA)
  • Catalysts (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

Methods of forming polycrystalline diamond elements include forming a polycrystalline diamond element. A Group VIII metal or alloy catalyst is employed to form the polycrystalline diamond compact table at a pressure of at least about 6.5 GPa or greater. The catalyst is then removed from at least a portion of the table to a depth from a working surface thereof, and may be removed from the entirety of the table. Polycrystalline diamond elements include such polycrystalline diamond compact tables. Earth-boring tools include such polycrystalline diamond elements carried thereon and employed as cutting elements.
PCT/US2010/045878 2009-08-18 2010-08-18 Method of forming polystalline diamond elements, polycrystalline diamond elements, and earth boring tools carrying such polycrystalline diamond elements WO2011022474A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2770847A CA2770847A1 (en) 2009-08-18 2010-08-18 Methods of forming polycrystalline diamond elements, polycrystalline diamond elements, and earth-boring tools carrying such polycrystalline diamond elements
EP10810541.2A EP2467558A4 (en) 2009-08-18 2010-08-18 Method of forming polystalline diamond elements, polycrystalline diamond elements, and earth boring tools carrying such polycrystalline diamond elements
ZA2012/01225A ZA201201225B (en) 2009-08-18 2012-02-17 Method of forming polystalline diamond elements,polycrystalline diamond elements,and earth boring tools carrying such polycrystalline diamond elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23477609P 2009-08-18 2009-08-18
US61/234,776 2009-08-18

Publications (3)

Publication Number Publication Date
WO2011022474A2 WO2011022474A2 (en) 2011-02-24
WO2011022474A3 true WO2011022474A3 (en) 2011-06-30
WO2011022474A4 WO2011022474A4 (en) 2011-08-11

Family

ID=43604405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/045878 WO2011022474A2 (en) 2009-08-18 2010-08-18 Method of forming polystalline diamond elements, polycrystalline diamond elements, and earth boring tools carrying such polycrystalline diamond elements

Country Status (5)

Country Link
US (1) US20110042149A1 (en)
EP (1) EP2467558A4 (en)
CA (1) CA2770847A1 (en)
WO (1) WO2011022474A2 (en)
ZA (1) ZA201201225B (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7036611B2 (en) 2002-07-30 2006-05-02 Baker Hughes Incorporated Expandable reamer apparatus for enlarging boreholes while drilling and methods of use
US9017438B1 (en) 2006-10-10 2015-04-28 Us Synthetic Corporation Polycrystalline diamond compact including a polycrystalline diamond table with a thermally-stable region having at least one low-carbon-solubility material and applications therefor
US8236074B1 (en) 2006-10-10 2012-08-07 Us Synthetic Corporation Superabrasive elements, methods of manufacturing, and drill bits including same
US8034136B2 (en) 2006-11-20 2011-10-11 Us Synthetic Corporation Methods of fabricating superabrasive articles
US8080074B2 (en) 2006-11-20 2011-12-20 Us Synthetic Corporation Polycrystalline diamond compacts, and related methods and applications
US8911521B1 (en) 2008-03-03 2014-12-16 Us Synthetic Corporation Methods of fabricating a polycrystalline diamond body with a sintering aid/infiltrant at least saturated with non-diamond carbon and resultant products such as compacts
US8999025B1 (en) 2008-03-03 2015-04-07 Us Synthetic Corporation Methods of fabricating a polycrystalline diamond body with a sintering aid/infiltrant at least saturated with non-diamond carbon and resultant products such as compacts
US7866418B2 (en) * 2008-10-03 2011-01-11 Us Synthetic Corporation Rotary drill bit including polycrystalline diamond cutting elements
US8297382B2 (en) 2008-10-03 2012-10-30 Us Synthetic Corporation Polycrystalline diamond compacts, method of fabricating same, and various applications
US9315881B2 (en) 2008-10-03 2016-04-19 Us Synthetic Corporation Polycrystalline diamond, polycrystalline diamond compacts, methods of making same, and applications
US8071173B1 (en) 2009-01-30 2011-12-06 Us Synthetic Corporation Methods of fabricating a polycrystalline diamond compact including a pre-sintered polycrystalline diamond table having a thermally-stable region
CA2760984C (en) * 2009-05-20 2018-05-01 Smith International, Inc. Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
US10309158B2 (en) * 2010-12-07 2019-06-04 Us Synthetic Corporation Method of partially infiltrating an at least partially leached polycrystalline diamond table and resultant polycrystalline diamond compacts
US9027675B1 (en) 2011-02-15 2015-05-12 Us Synthetic Corporation Polycrystalline diamond compact including a polycrystalline diamond table containing aluminum carbide therein and applications therefor
US8882869B2 (en) 2011-03-04 2014-11-11 Baker Hughes Incorporated Methods of forming polycrystalline elements and structures formed by such methods
US10099347B2 (en) * 2011-03-04 2018-10-16 Baker Hughes Incorporated Polycrystalline tables, polycrystalline elements, and related methods
US8727046B2 (en) 2011-04-15 2014-05-20 Us Synthetic Corporation Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts
US9493991B2 (en) 2012-04-02 2016-11-15 Baker Hughes Incorporated Cutting structures, tools for use in subterranean boreholes including cutting structures and related methods
US8961630B2 (en) 2012-05-04 2015-02-24 Baker Hughes Incorporated Methods of forming cutting elements by removing metal from interstitial spaces in polycrystalline diamond
GB2507568A (en) * 2012-11-05 2014-05-07 Element Six Abrasives Sa A chamfered pcd cutter or shear bit
US9534450B2 (en) 2013-07-22 2017-01-03 Baker Hughes Incorporated Thermally stable polycrystalline compacts for reduced spalling, earth-boring tools including such compacts, and related methods
US10047567B2 (en) 2013-07-29 2018-08-14 Baker Hughes Incorporated Cutting elements, related methods of forming a cutting element, and related earth-boring tools
AU2014371934B2 (en) 2013-12-25 2020-01-23 Daiichi Sankyo Company, Limited Anti-TROP2 antibody-drug conjugate
EP3973995A1 (en) 2014-01-31 2022-03-30 Daiichi Sankyo Company, Limited Anti-her2 antibody-drug conjugate
US9845642B2 (en) 2014-03-17 2017-12-19 Baker Hughes Incorporated Cutting elements having non-planar cutting faces with selectively leached regions, earth-boring tools including such cutting elements, and related methods
US9714545B2 (en) 2014-04-08 2017-07-25 Baker Hughes Incorporated Cutting elements having a non-uniform annulus leach depth, earth-boring tools including such cutting elements, and related methods
US9605488B2 (en) 2014-04-08 2017-03-28 Baker Hughes Incorporated Cutting elements including undulating boundaries between catalyst-containing and catalyst-free regions of polycrystalline superabrasive materials and related earth-boring tools and methods
US9863189B2 (en) 2014-07-11 2018-01-09 Baker Hughes Incorporated Cutting elements comprising partially leached polycrystalline material, tools comprising such cutting elements, and methods of forming wellbores using such cutting elements
US10633928B2 (en) 2015-07-31 2020-04-28 Baker Hughes, A Ge Company, Llc Polycrystalline diamond compacts having leach depths selected to control physical properties and methods of forming such compacts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151107A (en) * 1988-07-29 1992-09-29 Norton Company Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof
US6270548B1 (en) * 1997-04-17 2001-08-07 James Wilbert Campbell Sintering process for diamond and diamond growth
US7517589B2 (en) * 2004-09-21 2009-04-14 Smith International, Inc. Thermally stable diamond polycrystalline diamond constructions
US20090166094A1 (en) * 2005-05-26 2009-07-02 Smith International, Inc. Polycrystalline Diamond Materials Having Improved Abrasion Resistance, Thermal Stability and Impact Resistance

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745623A (en) * 1971-12-27 1973-07-17 Gen Electric Diamond tools for machining
US4224380A (en) * 1978-03-28 1980-09-23 General Electric Company Temperature resistant abrasive compact and method for making same
JPS6059008B2 (en) * 1980-04-18 1985-12-23 博 石塚 Improved ultra-high pressure equipment
US4610699A (en) * 1984-01-18 1986-09-09 Sumitomo Electric Industries, Ltd. Hard diamond sintered body and the method for producing the same
US5127923A (en) * 1985-01-10 1992-07-07 U.S. Synthetic Corporation Composite abrasive compact having high thermal stability
SE9002135D0 (en) * 1990-06-15 1990-06-15 Sandvik Ab IMPROVED TOOLS FOR PERCUSSIVE AND ROTARY CRUSCHING ROCK DRILLING PROVIDED WITH A DIAMOND LAYER
US6395214B1 (en) * 1998-11-30 2002-05-28 Rutgers, The State University Of New Jersey High pressure and low temperature sintering of nanophase ceramic powders
US6248447B1 (en) * 1999-09-03 2001-06-19 Camco International (Uk) Limited Cutting elements and methods of manufacture thereof
US6592985B2 (en) * 2000-09-20 2003-07-15 Camco International (Uk) Limited Polycrystalline diamond partially depleted of catalyzing material
DE60140617D1 (en) * 2000-09-20 2010-01-07 Camco Int Uk Ltd POLYCRYSTALLINE DIAMOND WITH A SURFACE ENRICHED ON CATALYST MATERIAL
WO2005061181A2 (en) * 2003-12-11 2005-07-07 Element Six (Pty) Ltd Polycrystalline diamond abrasive elements
US7726420B2 (en) * 2004-04-30 2010-06-01 Smith International, Inc. Cutter having shaped working surface with varying edge chamfer
EP1750876B1 (en) * 2004-05-12 2011-07-06 Baker Hughes Incorporated Cutting tool insert
ZA200504494B (en) * 2004-06-01 2006-04-26 Smith International Methods for manufacturing ultrahard cutting elements
US7608333B2 (en) * 2004-09-21 2009-10-27 Smith International, Inc. Thermally stable diamond polycrystalline diamond constructions
GB0423597D0 (en) * 2004-10-23 2004-11-24 Reedhycalog Uk Ltd Dual-edge working surfaces for polycrystalline diamond cutting elements
US7726421B2 (en) * 2005-10-12 2010-06-01 Smith International, Inc. Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength
US7628234B2 (en) * 2006-02-09 2009-12-08 Smith International, Inc. Thermally stable ultra-hard polycrystalline materials and compacts
US8328891B2 (en) * 2006-05-09 2012-12-11 Smith International, Inc. Methods of forming thermally stable polycrystalline diamond cutters
US8080074B2 (en) * 2006-11-20 2011-12-20 Us Synthetic Corporation Polycrystalline diamond compacts, and related methods and applications
WO2008088034A1 (en) * 2007-01-19 2008-07-24 Sumitomo Electric Industries, Ltd. Cutting tool
US8028771B2 (en) * 2007-02-06 2011-10-04 Smith International, Inc. Polycrystalline diamond constructions having improved thermal stability
WO2009125355A1 (en) * 2008-04-08 2009-10-15 Element Six (Production) (Pty) Ltd Cutting tool insert
US8349040B2 (en) * 2008-07-08 2013-01-08 Smith International, Inc. Method for making composite abrasive compacts
US20100012389A1 (en) * 2008-07-17 2010-01-21 Smith International, Inc. Methods of forming polycrystalline diamond cutters
US8083012B2 (en) * 2008-10-03 2011-12-27 Smith International, Inc. Diamond bonded construction with thermally stable region
US7866418B2 (en) * 2008-10-03 2011-01-11 Us Synthetic Corporation Rotary drill bit including polycrystalline diamond cutting elements
US20100104874A1 (en) * 2008-10-29 2010-04-29 Smith International, Inc. High pressure sintering with carbon additives
US8663349B2 (en) * 2008-10-30 2014-03-04 Us Synthetic Corporation Polycrystalline diamond compacts, and related methods and applications
CA2749776C (en) * 2009-01-16 2016-01-05 Baker Hughes Incorporated Methods of forming polycrystalline diamond cutting elements, cutting elements so formed and drill bits so equipped
WO2011017673A2 (en) * 2009-08-07 2011-02-10 Smith International, Inc. Thermally stable polycrystalline diamond constructions
US8758463B2 (en) * 2009-08-07 2014-06-24 Smith International, Inc. Method of forming a thermally stable diamond cutting element
CA2770502C (en) * 2009-08-07 2014-10-07 Baker Hughes Incorporated Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151107A (en) * 1988-07-29 1992-09-29 Norton Company Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof
US6270548B1 (en) * 1997-04-17 2001-08-07 James Wilbert Campbell Sintering process for diamond and diamond growth
US7517589B2 (en) * 2004-09-21 2009-04-14 Smith International, Inc. Thermally stable diamond polycrystalline diamond constructions
US20090166094A1 (en) * 2005-05-26 2009-07-02 Smith International, Inc. Polycrystalline Diamond Materials Having Improved Abrasion Resistance, Thermal Stability and Impact Resistance

Also Published As

Publication number Publication date
EP2467558A4 (en) 2015-12-02
WO2011022474A2 (en) 2011-02-24
ZA201201225B (en) 2012-10-31
EP2467558A2 (en) 2012-06-27
CA2770847A1 (en) 2011-02-24
WO2011022474A4 (en) 2011-08-11
US20110042149A1 (en) 2011-02-24

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