GB2395739B - Bowed crests for milled tooth bits - Google Patents

Bowed crests for milled tooth bits

Info

Publication number
GB2395739B
GB2395739B GB0403717A GB0403717A GB2395739B GB 2395739 B GB2395739 B GB 2395739B GB 0403717 A GB0403717 A GB 0403717A GB 0403717 A GB0403717 A GB 0403717A GB 2395739 B GB2395739 B GB 2395739B
Authority
GB
United Kingdom
Prior art keywords
crests
bowed
milled tooth
tooth bits
bits
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
GB0403717A
Other versions
GB2395739A (en
GB0403717D0 (en
Inventor
Amardeep Singh
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 US09/931,517 external-priority patent/US6725952B2/en
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of GB0403717D0 publication Critical patent/GB0403717D0/en
Publication of GB2395739A publication Critical patent/GB2395739A/en
Application granted granted Critical
Publication of GB2395739B publication Critical patent/GB2395739B/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)
  • Earth Drilling (AREA)
GB0403717A 2001-08-16 2002-08-16 Bowed crests for milled tooth bits Expired - Fee Related GB2395739B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/931,517 US6725952B2 (en) 2001-08-16 2001-08-16 Bowed crests for milled tooth bits
GB0219148A GB2378720B (en) 2001-08-16 2002-08-16 Bowed crests for milled tooth bits

Publications (3)

Publication Number Publication Date
GB0403717D0 GB0403717D0 (en) 2004-03-24
GB2395739A GB2395739A (en) 2004-06-02
GB2395739B true GB2395739B (en) 2005-02-02

Family

ID=32232391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0403717A Expired - Fee Related GB2395739B (en) 2001-08-16 2002-08-16 Bowed crests for milled tooth bits

Country Status (1)

Country Link
GB (1) GB2395739B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2305831A1 (en) * 1999-04-15 2000-10-15 Camco International Inc. Tooth type drill bit with secondary cutting elements and stress reducing tooth geometry

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2305831A1 (en) * 1999-04-15 2000-10-15 Camco International Inc. Tooth type drill bit with secondary cutting elements and stress reducing tooth geometry

Also Published As

Publication number Publication date
GB2395739A (en) 2004-06-02
GB0403717D0 (en) 2004-03-24

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Legal Events

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

Effective date: 20150816