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WO1997048873A3 - Element coupant rotatif de forme asymetrique resistant a la contrainte, destine a un trepan - Google Patents

Element coupant rotatif de forme asymetrique resistant a la contrainte, destine a un trepan Download PDF

Info

Publication number
WO1997048873A3
WO1997048873A3 PCT/US1997/010772 US9710772W WO9748873A3 WO 1997048873 A3 WO1997048873 A3 WO 1997048873A3 US 9710772 W US9710772 W US 9710772W WO 9748873 A3 WO9748873 A3 WO 9748873A3
Authority
WO
WIPO (PCT)
Prior art keywords
cutter element
face
cutter
trailing
leading
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.)
Ceased
Application number
PCT/US1997/010772
Other languages
English (en)
Other versions
WO1997048873A9 (fr
WO1997048873A2 (fr
Inventor
Gary Ray Portwood
Gary Edward Garcia
James Carl Minikus
Per Ivar Nese
Chris Edward Cawthorne
Scott D Mcdonough
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
Priority claimed from US08/668,109 external-priority patent/US5813485A/en
Application filed by Smith International Inc filed Critical Smith International Inc
Priority to GB9826993A priority Critical patent/GB2330851B/en
Priority to AU35741/97A priority patent/AU3574197A/en
Priority to CA002257885A priority patent/CA2257885C/fr
Publication of WO1997048873A2 publication Critical patent/WO1997048873A2/fr
Publication of WO1997048873A3 publication Critical patent/WO1997048873A3/fr
Publication of WO1997048873A9 publication Critical patent/WO1997048873A9/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un élément coupant qui possède un maximum de capacités de jaugeage et réduit au minimum les détériorations des éléments coupants provoquées par l'effort de traction. Les éléments coupants décrits dans la présente invention ont une forme asymétrique et peuvent adopter un profil coupant plus agressif que les éléments coupants traditionnels. Dans un premier mode de réalisation, on configure un élément coupant de manière à ce que l'angle interne entre la force d'attaque et la face d'usure soit inférieur à l'angle interne entre la force de fuite et la face d'usure. On peut obtenir le même effet si l'on munit l'élément coupant d'une face d'usure dégagée. Dans un deuxième mode de réalisation, les surfaces dudit élément sont curvilignes, les transitions entre les surfaces d'attaque et de fuite étant arrondies ou profilées. Ladite réalisation prévoit une transition d'attaque ayant une forme plus effilée que la transition de fuite; on obtient cet effet en configurant le dispositif de telle sorte que le rayon de courbure de la transition d'attaque soit inférieur au rayon de courbure de la transition de fuite. Dans un troisième mode de réalisation, l'élément coupant possède un bord de fuite chanfreiné qui permet d'obtenir une transition d'attaque de forme plus effilée que la transition de fuite. Dans un quatrième mode de réalisation, l'élément coupant possède un bord de fuite chanfreiné ou profilé, combiné à un flanc d'usure biseauté. Enfin, dans un dernier mode de réalisation, la face d'attaque de l'élément coupant possède un angle de coupe positif.
PCT/US1997/010772 1996-06-21 1997-06-20 Element coupant rotatif de forme asymetrique resistant a la contrainte, destine a un trepan Ceased WO1997048873A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9826993A GB2330851B (en) 1996-06-21 1997-06-20 Non-symmetrical stress-resistant rotary drill bit cutter element
AU35741/97A AU3574197A (en) 1996-06-21 1997-06-20 Non-symmetrical stress-resistant rotary drill bit cutter element
CA002257885A CA2257885C (fr) 1996-06-21 1997-06-20 Element coupant rotatif de forme asymetrique resistant a la contrainte, destine a un trepan

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US2019896P 1996-06-21 1996-06-21
US08/668,109 1996-06-21
US60/020,198 1996-06-21
US08/668,109 US5813485A (en) 1996-06-21 1996-06-21 Cutter element adapted to withstand tensile stress

Publications (3)

Publication Number Publication Date
WO1997048873A2 WO1997048873A2 (fr) 1997-12-24
WO1997048873A3 true WO1997048873A3 (fr) 1998-02-12
WO1997048873A9 WO1997048873A9 (fr) 1998-04-23

Family

ID=26693157

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/010772 Ceased WO1997048873A2 (fr) 1996-06-21 1997-06-20 Element coupant rotatif de forme asymetrique resistant a la contrainte, destine a un trepan

Country Status (3)

Country Link
AU (1) AU3574197A (fr)
GB (1) GB2330851B (fr)
WO (1) WO1997048873A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109898995A (zh) * 2019-02-19 2019-06-18 西南石油大学 一种具有滚动齿圈的组合式单牙轮钻头

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6053263A (en) * 1997-06-20 2000-04-25 Baker Hughes Incorporated Cutting element tip configuration for an earth-boring bit
EP0957232A1 (fr) * 1998-05-13 1999-11-17 BOART LONGYEAR GMBH & CO. KG HARTMETALLWERKZEUGFABRIK Trépan à molettesavec des anneaux de coupe segmentés pour tunneliers
US7726420B2 (en) * 2004-04-30 2010-06-01 Smith International, Inc. Cutter having shaped working surface with varying edge chamfer
US20050247486A1 (en) * 2004-04-30 2005-11-10 Smith International, Inc. Modified cutters
CN110185397A (zh) * 2019-07-11 2019-08-30 西南石油大学 一种圆弧-抛物线-圆弧的新型齿形结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058177A (en) * 1976-03-29 1977-11-15 Dresser Industries, Inc. Asymmetric gage insert for an earth boring apparatus
US4334586A (en) * 1980-06-05 1982-06-15 Reed Rock Bit Company Inserts for drilling bits
US5201376A (en) * 1992-04-22 1993-04-13 Dresser Industries, Inc. Rock bit with improved gage insert
US5322138A (en) * 1991-08-14 1994-06-21 Smith International, Inc. Chisel insert for rock bits
US5421423A (en) * 1994-03-22 1995-06-06 Dresser Industries, Inc. Rotary cone drill bit with improved cutter insert
US5592995A (en) * 1995-06-06 1997-01-14 Baker Hughes Incorporated Earth-boring bit having shear-cutting heel elements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058177A (en) * 1976-03-29 1977-11-15 Dresser Industries, Inc. Asymmetric gage insert for an earth boring apparatus
US4334586A (en) * 1980-06-05 1982-06-15 Reed Rock Bit Company Inserts for drilling bits
US5322138A (en) * 1991-08-14 1994-06-21 Smith International, Inc. Chisel insert for rock bits
US5201376A (en) * 1992-04-22 1993-04-13 Dresser Industries, Inc. Rock bit with improved gage insert
US5421423A (en) * 1994-03-22 1995-06-06 Dresser Industries, Inc. Rotary cone drill bit with improved cutter insert
US5592995A (en) * 1995-06-06 1997-01-14 Baker Hughes Incorporated Earth-boring bit having shear-cutting heel elements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109898995A (zh) * 2019-02-19 2019-06-18 西南石油大学 一种具有滚动齿圈的组合式单牙轮钻头
CN109898995B (zh) * 2019-02-19 2021-06-08 西南石油大学 一种具有滚动齿圈的组合式单牙轮钻头

Also Published As

Publication number Publication date
WO1997048873A2 (fr) 1997-12-24
AU3574197A (en) 1998-01-07
GB2330851A (en) 1999-05-05
GB9826993D0 (en) 1999-02-03
GB2330851B (en) 2000-08-16

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