EP0955446A3 - Preform cutting element - Google Patents

Preform cutting element Download PDF

Info

Publication number
EP0955446A3
EP0955446A3 EP99303483A EP99303483A EP0955446A3 EP 0955446 A3 EP0955446 A3 EP 0955446A3 EP 99303483 A EP99303483 A EP 99303483A EP 99303483 A EP99303483 A EP 99303483A EP 0955446 A3 EP0955446 A3 EP 0955446A3
Authority
EP
European Patent Office
Prior art keywords
cutting element
preform cutting
front face
facing table
ofthe
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
EP99303483A
Other languages
German (de)
French (fr)
Other versions
EP0955446B1 (en
EP0955446A2 (en
Inventor
Nigel Dennis Griffin
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.)
ReedHycalog UK Ltd
Original Assignee
Camco International UK Ltd
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 Camco International UK Ltd filed Critical Camco International UK Ltd
Publication of EP0955446A2 publication Critical patent/EP0955446A2/en
Publication of EP0955446A3 publication Critical patent/EP0955446A3/en
Application granted granted Critical
Publication of EP0955446B1 publication Critical patent/EP0955446B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type 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
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • E21B10/5735—Interface between the substrate and the cutting element

Abstract

A preform cutting element, for use in a drag-type drill bit, includes a facing table (10) of polycrystalline diamond having a front face (12), a peripheral surface (13), and a rear surface (14) bonded to the front face of a tungsten carbide substrate (11). The rear face (14) ofthe diamond facing table is integrally formed with a single protuberance (19), adjacent the periphery ofthe element, which extends into a correspondingly shaped recess in the substrate (11).
EP19990303483 1998-05-08 1999-05-04 Preform cutting element Expired - Lifetime EP0955446B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9809690.2A GB9809690D0 (en) 1998-05-08 1998-05-08 Improvements in elements faced with superhard material
GB9809690 1998-05-08

Publications (3)

Publication Number Publication Date
EP0955446A2 EP0955446A2 (en) 1999-11-10
EP0955446A3 true EP0955446A3 (en) 2000-08-16
EP0955446B1 EP0955446B1 (en) 2004-07-28

Family

ID=10831554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990303483 Expired - Lifetime EP0955446B1 (en) 1998-05-08 1999-05-04 Preform cutting element

Country Status (3)

Country Link
EP (1) EP0955446B1 (en)
DE (1) DE69918891T2 (en)
GB (2) GB9809690D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9911139D0 (en) * 1999-05-14 1999-07-14 Camco Int Uk Ltd Preform cutting elemenys for rotary drill bits
US6604588B2 (en) 2001-09-28 2003-08-12 Smith International, Inc. Gage trimmers and bit incorporating the same
US7757793B2 (en) * 2005-11-01 2010-07-20 Smith International, Inc. Thermally stable polycrystalline ultra-hard constructions
US9217296B2 (en) 2008-01-09 2015-12-22 Smith International, Inc. Polycrystalline ultra-hard constructions with multiple support members
US7909121B2 (en) 2008-01-09 2011-03-22 Smith International, Inc. Polycrystalline ultra-hard compact constructions
WO2010088504A1 (en) 2009-01-29 2010-08-05 Smith International, Inc. Brazing methods for pdc cutters

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811801A (en) * 1988-03-16 1989-03-14 Smith International, Inc. Rock bits and inserts therefor
US5435403A (en) * 1993-12-09 1995-07-25 Baker Hughes Incorporated Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits
EP0692607A2 (en) * 1994-06-16 1996-01-17 De Beers Industrial Diamond Division (Proprietary) Limited Tool component with abrasive compact
US5706906A (en) * 1996-02-15 1998-01-13 Baker Hughes Incorporated Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped
EP0857537A1 (en) * 1997-01-28 1998-08-12 De Beers Industrial Diamond Division (Proprietary) Limited Insert for an abrasive tool
US5887580A (en) * 1998-03-25 1999-03-30 Smith International, Inc. Cutting element with interlocking feature

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784023A (en) 1985-12-05 1988-11-15 Diamant Boart-Stratabit (Usa) Inc. Cutting element having composite formed of cemented carbide substrate and diamond layer and method of making same
US5120327A (en) 1991-03-05 1992-06-09 Diamant-Boart Stratabit (Usa) Inc. Cutting composite formed of cemented carbide substrate and diamond layer
GB2283772B (en) 1993-11-10 1997-01-15 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
GB2283773B (en) 1993-11-10 1998-02-25 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
GB9412247D0 (en) 1994-06-18 1994-08-10 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
GB9506079D0 (en) 1995-03-24 1995-05-10 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
GB9508226D0 (en) 1995-04-22 1995-06-07 Camco Drilling Group Ltd Improvements in or relating to elements faced with superhard material
EP0764760B1 (en) 1995-09-23 2001-02-21 Camco Drilling Group Limited Cutting insert for rotary drag bit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811801A (en) * 1988-03-16 1989-03-14 Smith International, Inc. Rock bits and inserts therefor
US5435403A (en) * 1993-12-09 1995-07-25 Baker Hughes Incorporated Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits
EP0692607A2 (en) * 1994-06-16 1996-01-17 De Beers Industrial Diamond Division (Proprietary) Limited Tool component with abrasive compact
US5706906A (en) * 1996-02-15 1998-01-13 Baker Hughes Incorporated Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped
EP0857537A1 (en) * 1997-01-28 1998-08-12 De Beers Industrial Diamond Division (Proprietary) Limited Insert for an abrasive tool
US5887580A (en) * 1998-03-25 1999-03-30 Smith International, Inc. Cutting element with interlocking feature

Also Published As

Publication number Publication date
EP0955446B1 (en) 2004-07-28
EP0955446A2 (en) 1999-11-10
GB2337063A (en) 1999-11-10
GB9809690D0 (en) 1998-07-01
GB9910223D0 (en) 1999-06-30
DE69918891D1 (en) 2004-09-02
DE69918891T2 (en) 2005-08-04

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