GB2330851B - Non-symmetrical stress-resistant rotary drill bit cutter element - Google Patents

Non-symmetrical stress-resistant rotary drill bit cutter element

Info

Publication number
GB2330851B
GB2330851B GB9826993A GB9826993A GB2330851B GB 2330851 B GB2330851 B GB 2330851B GB 9826993 A GB9826993 A GB 9826993A GB 9826993 A GB9826993 A GB 9826993A GB 2330851 B GB2330851 B GB 2330851B
Authority
GB
United Kingdom
Prior art keywords
drill bit
rotary drill
cutter element
bit cutter
resistant rotary
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.)
Expired - Fee Related
Application number
GB9826993A
Other versions
GB9826993D0 (en
GB2330851A (en
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
Publication of GB9826993D0 publication Critical patent/GB9826993D0/en
Publication of GB2330851A publication Critical patent/GB2330851A/en
Application granted granted Critical
Publication of GB2330851B publication Critical patent/GB2330851B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
GB9826993A 1996-06-21 1997-06-20 Non-symmetrical stress-resistant rotary drill bit cutter element Expired - Fee Related GB2330851B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US2019896P 1996-06-21 1996-06-21
US08/668,109 US5813485A (en) 1996-06-21 1996-06-21 Cutter element adapted to withstand tensile stress
PCT/US1997/010772 WO1997048873A2 (en) 1996-06-21 1997-06-20 Non-symmetrical stress-resistant rotary drill bit cutter element

Publications (3)

Publication Number Publication Date
GB9826993D0 GB9826993D0 (en) 1999-02-03
GB2330851A GB2330851A (en) 1999-05-05
GB2330851B true GB2330851B (en) 2000-08-16

Family

ID=26693157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9826993A Expired - Fee Related GB2330851B (en) 1996-06-21 1997-06-20 Non-symmetrical stress-resistant rotary drill bit cutter element

Country Status (3)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0920568B1 (en) * 1997-06-20 2004-05-06 Baker Hughes Incorporated Cutting element tip configuration for an earth-boring bit
EP0957232A1 (en) * 1998-05-13 1999-11-17 BOART LONGYEAR GMBH & CO. KG HARTMETALLWERKZEUGFABRIK Roller bit with segemented cutting rings for tunneling machines
US20050247486A1 (en) * 2004-04-30 2005-11-10 Smith International, Inc. Modified cutters
US7726420B2 (en) * 2004-04-30 2010-06-01 Smith International, Inc. Cutter having shaped working surface with varying edge chamfer
CN109898995B (en) * 2019-02-19 2021-06-08 西南石油大学 Combined single-cone bit with rolling gear ring
CN110185397A (en) * 2019-07-11 2019-08-30 西南石油大学 A kind of circular arc-parabola-circular arc tooth structure

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

Also Published As

Publication number Publication date
AU3574197A (en) 1998-01-07
GB9826993D0 (en) 1999-02-03
WO1997048873A3 (en) 1998-02-12
WO1997048873A2 (en) 1997-12-24
GB2330851A (en) 1999-05-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150620