GB2441908B - Two-cone drill bit - Google Patents

Two-cone drill bit

Info

Publication number
GB2441908B
GB2441908B GB0721097A GB0721097A GB2441908B GB 2441908 B GB2441908 B GB 2441908B GB 0721097 A GB0721097 A GB 0721097A GB 0721097 A GB0721097 A GB 0721097A GB 2441908 B GB2441908 B GB 2441908B
Authority
GB
United Kingdom
Prior art keywords
drill bit
cone drill
cone
bit
drill
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
GB0721097A
Other versions
GB0721097D0 (en
GB2441908A (en
Inventor
Prabhakaran K Centala
James Layne Larsen
Mohammed Boudrare
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 US10/938,069 external-priority patent/US7681670B2/en
Application filed by Smith International Inc filed Critical Smith International Inc
Priority to GB0518247A priority Critical patent/GB2417969C/en
Priority to GB0721097A priority patent/GB2441908B/en
Publication of GB0721097D0 publication Critical patent/GB0721097D0/en
Publication of GB2441908A publication Critical patent/GB2441908A/en
Application granted granted Critical
Publication of GB2441908B publication Critical patent/GB2441908B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E21B10/08—Roller bits
    • 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
    • E21B10/086—Roller bits with excentric movement
    • 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
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids

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)
GB0721097A 2004-09-10 2005-09-07 Two-cone drill bit Expired - Fee Related GB2441908B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0518247A GB2417969C (en) 2004-09-10 2005-09-07 Two-cone drill bit
GB0721097A GB2441908B (en) 2004-09-10 2005-09-07 Two-cone drill bit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/938,069 US7681670B2 (en) 2004-09-10 2004-09-10 Two-cone drill bit
GB0518247A GB2417969C (en) 2004-09-10 2005-09-07 Two-cone drill bit
GB0721097A GB2441908B (en) 2004-09-10 2005-09-07 Two-cone drill bit

Publications (3)

Publication Number Publication Date
GB0721097D0 GB0721097D0 (en) 2007-12-05
GB2441908A GB2441908A (en) 2008-03-19
GB2441908B true GB2441908B (en) 2008-08-27

Family

ID=39166972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0721097A Expired - Fee Related GB2441908B (en) 2004-09-10 2005-09-07 Two-cone drill bit

Country Status (1)

Country Link
GB (1) GB2441908B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126194A (en) * 1977-07-11 1978-11-21 Smith International, Inc. Rock bit with extended pickup tube
US5562171A (en) * 1994-05-04 1996-10-08 Baker Hughes Incorporated Anti-balling drill bit
US6763902B2 (en) * 2000-04-12 2004-07-20 Smith International, Inc. Rockbit with attachable device for improved cone cleaning

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126194A (en) * 1977-07-11 1978-11-21 Smith International, Inc. Rock bit with extended pickup tube
US5562171A (en) * 1994-05-04 1996-10-08 Baker Hughes Incorporated Anti-balling drill bit
US6763902B2 (en) * 2000-04-12 2004-07-20 Smith International, Inc. Rockbit with attachable device for improved cone cleaning

Also Published As

Publication number Publication date
GB0721097D0 (en) 2007-12-05
GB2441908A (en) 2008-03-19

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Legal Events

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

Effective date: 20110907