GB0721097D0 - Two-cone drill bit - Google Patents

Two-cone drill bit

Info

Publication number
GB0721097D0
GB0721097D0 GBGB0721097.4A GB0721097A GB0721097D0 GB 0721097 D0 GB0721097 D0 GB 0721097D0 GB 0721097 A GB0721097 A GB 0721097A GB 0721097 D0 GB0721097 D0 GB 0721097D0
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.)
Granted
Application number
GBGB0721097.4A
Other versions
GB2441908A (en
GB2441908B (en
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 GB0721097A priority Critical patent/GB2441908B/en
Priority to GB0518247A priority patent/GB2417969C/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 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
    • E21B10/08—Roller bits
    • 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
    • E21B10/08—Roller bits
    • E21B10/086—Roller bits with excentric movement
    • 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
    • E21B10/08—Roller bits
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
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
GB0721097A GB2441908B (en) 2004-09-10 2005-09-07 Two-cone drill bit
GB0518247A GB2417969C (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
GB0721097A GB2441908B (en) 2004-09-10 2005-09-07 Two-cone drill bit
GB0518247A GB2417969C (en) 2004-09-10 2005-09-07 Two-cone drill bit

Publications (3)

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

Family Cites Families (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
FR2719626B1 (en) * 1994-05-04 1996-07-26 Total Sa Anti-jamming drilling tool.
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
GB2441908A (en) 2008-03-19
GB2441908B (en) 2008-08-27

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Legal Events

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

Effective date: 20110907