WO2009003088A3 - Rounded cutter pocket having reduced stressed concentration - Google Patents

Rounded cutter pocket having reduced stressed concentration Download PDF

Info

Publication number
WO2009003088A3
WO2009003088A3 PCT/US2008/068304 US2008068304W WO2009003088A3 WO 2009003088 A3 WO2009003088 A3 WO 2009003088A3 US 2008068304 W US2008068304 W US 2008068304W WO 2009003088 A3 WO2009003088 A3 WO 2009003088A3
Authority
WO
WIPO (PCT)
Prior art keywords
rounded
cutter pocket
insert
stressed concentration
rounded cutter
Prior art date
Application number
PCT/US2008/068304
Other languages
French (fr)
Other versions
WO2009003088A2 (en
Inventor
Marc W Bird
Andy Oxford
Original Assignee
Baker Hughes Inc
Marc W Bird
Andy Oxford
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 Inc, Marc W Bird, Andy Oxford filed Critical Baker Hughes Inc
Priority to AT08772009T priority Critical patent/ATE548538T1/en
Priority to EP08772009A priority patent/EP2173962B1/en
Priority to CA002688549A priority patent/CA2688549A1/en
Publication of WO2009003088A2 publication Critical patent/WO2009003088A2/en
Publication of WO2009003088A3 publication Critical patent/WO2009003088A3/en

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
    • E21B10/573—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
    • 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
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware

Abstract

A method for forming a drag bit (10) using displacements (16) having a rounded end (26) that creates a cutter pocket (13) having a rounded rear portion.(15). The displacement (16) may comprise an insert (46) on the rounded end that remains in the drag bit during and after formation. A cutter element (35) may then be attached to the upper portion of the insert (46). The rounded shape of the insert (46) provides a more even force distribution.
PCT/US2008/068304 2007-06-26 2008-06-26 Rounded cutter pocket having reduced stressed concentration WO2009003088A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT08772009T ATE548538T1 (en) 2007-06-26 2008-06-26 ROUNDED CUTTER POCKET WITH REDUCED STRESS CONCENTRATION
EP08772009A EP2173962B1 (en) 2007-06-26 2008-06-26 Rounded cutter pocket having reduced stressed concentration
CA002688549A CA2688549A1 (en) 2007-06-26 2008-06-26 Rounded cutter pocket having reduced stressed concentration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94630007P 2007-06-26 2007-06-26
US60/946,300 2007-06-26

Publications (2)

Publication Number Publication Date
WO2009003088A2 WO2009003088A2 (en) 2008-12-31
WO2009003088A3 true WO2009003088A3 (en) 2009-04-02

Family

ID=40159018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/068304 WO2009003088A2 (en) 2007-06-26 2008-06-26 Rounded cutter pocket having reduced stressed concentration

Country Status (5)

Country Link
US (1) US20090000827A1 (en)
EP (1) EP2173962B1 (en)
AT (1) ATE548538T1 (en)
CA (1) CA2688549A1 (en)
WO (1) WO2009003088A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7836980B2 (en) * 2007-08-13 2010-11-23 Baker Hughes Incorporated Earth-boring tools having pockets for receiving cutting elements and methods for forming earth-boring tools including such pockets
US8943663B2 (en) 2009-04-15 2015-02-03 Baker Hughes Incorporated Methods of forming and repairing cutting element pockets in earth-boring tools with depth-of-cut control features, and tools and structures formed by such methods
US9739097B2 (en) 2011-04-26 2017-08-22 Smith International, Inc. Polycrystalline diamond compact cutters with conic shaped end
US9303460B2 (en) * 2012-02-03 2016-04-05 Baker Hughes Incorporated Cutting element retention for high exposure cutting elements on earth-boring tools

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558170A (en) * 1992-12-23 1996-09-24 Baroid Technology, Inc. Method and apparatus for improving drill bit stability
US5662183A (en) * 1995-08-15 1997-09-02 Smith International, Inc. High strength matrix material for PDC drag bits
US5737980A (en) * 1996-06-04 1998-04-14 Smith International, Inc. Brazing receptacle for improved PCD cutter retention
US6029760A (en) * 1998-03-17 2000-02-29 Hall; David R. Superhard cutting element utilizing tough reinforcement posts
US6253864B1 (en) * 1998-08-10 2001-07-03 David R. Hall Percussive shearing drill bit
US20040182610A1 (en) * 2001-08-01 2004-09-23 Josef Mocivnik Drill crown
US6823952B1 (en) * 2000-10-26 2004-11-30 Smith International, Inc. Structure for polycrystalline diamond insert drill bit body

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333699A (en) * 1992-12-23 1994-08-02 Baroid Technology, Inc. Drill bit having polycrystalline diamond compact cutter with spherical first end opposite cutting end
WO2000034002A1 (en) * 1998-12-04 2000-06-15 Halliburton Energy Services, Inc. Method for applying hardfacing material to a steel bodied bit and bit formed by such a method
US6698098B2 (en) * 2001-10-10 2004-03-02 Smith International, Inc. Cone erosion protection for roller cone drill bits
US7625521B2 (en) * 2003-06-05 2009-12-01 Smith International, Inc. Bonding of cutters in drill bits

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558170A (en) * 1992-12-23 1996-09-24 Baroid Technology, Inc. Method and apparatus for improving drill bit stability
US5662183A (en) * 1995-08-15 1997-09-02 Smith International, Inc. High strength matrix material for PDC drag bits
US5737980A (en) * 1996-06-04 1998-04-14 Smith International, Inc. Brazing receptacle for improved PCD cutter retention
US6029760A (en) * 1998-03-17 2000-02-29 Hall; David R. Superhard cutting element utilizing tough reinforcement posts
US6253864B1 (en) * 1998-08-10 2001-07-03 David R. Hall Percussive shearing drill bit
US6823952B1 (en) * 2000-10-26 2004-11-30 Smith International, Inc. Structure for polycrystalline diamond insert drill bit body
US20040182610A1 (en) * 2001-08-01 2004-09-23 Josef Mocivnik Drill crown

Also Published As

Publication number Publication date
CA2688549A1 (en) 2008-12-31
EP2173962B1 (en) 2012-03-07
US20090000827A1 (en) 2009-01-01
WO2009003088A2 (en) 2008-12-31
EP2173962A2 (en) 2010-04-14
ATE548538T1 (en) 2012-03-15

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