GB2378725B - Earth boring bit - Google Patents

Earth boring bit

Info

Publication number
GB2378725B
GB2378725B GB0227670A GB0227670A GB2378725B GB 2378725 B GB2378725 B GB 2378725B GB 0227670 A GB0227670 A GB 0227670A GB 0227670 A GB0227670 A GB 0227670A GB 2378725 B GB2378725 B GB 2378725B
Authority
GB
United Kingdom
Prior art keywords
earth boring
boring bit
bit
earth
boring
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
GB0227670A
Other versions
GB0227670D0 (en
GB2378725A (en
Inventor
Michael Allen Siracki
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 US09/197,358 external-priority patent/US6345673B1/en
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of GB0227670D0 publication Critical patent/GB0227670D0/en
Publication of GB2378725A publication Critical patent/GB2378725A/en
Application granted granted Critical
Publication of GB2378725B publication Critical patent/GB2378725B/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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • 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

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)
GB0227670A 1998-11-20 1999-11-18 Earth boring bit Expired - Fee Related GB2378725B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/197,358 US6345673B1 (en) 1998-11-20 1998-11-20 High offset bits with super-abrasive cutters
GB9927324A GB2343905B (en) 1998-11-20 1999-11-18 Earth boring bit

Publications (3)

Publication Number Publication Date
GB0227670D0 GB0227670D0 (en) 2003-01-08
GB2378725A GB2378725A (en) 2003-02-19
GB2378725B true GB2378725B (en) 2003-06-11

Family

ID=26316085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0227670A Expired - Fee Related GB2378725B (en) 1998-11-20 1999-11-18 Earth boring bit

Country Status (1)

Country Link
GB (1) GB2378725B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117967202B (en) * 2024-03-29 2024-06-14 西南石油大学 Tricone steel inlaid hybrid drill bit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657093A (en) * 1980-03-24 1987-04-14 Reed Rock Bit Company Rolling cutter drill bit
GB2279095A (en) * 1993-06-15 1994-12-21 Smith International Ultra hard insert cutters for heel row rotary cone rock bit applications
US5586612A (en) * 1995-01-26 1996-12-24 Baker Hughes Incorporated Roller cone bit with positive and negative offset and smooth running configuration
GB2316112A (en) * 1996-08-12 1998-02-18 Baker Hughes Inc Rotary bit having shear cutting elements
GB2319549A (en) * 1996-04-10 1998-05-27 Smith International Rolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting duty

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657093A (en) * 1980-03-24 1987-04-14 Reed Rock Bit Company Rolling cutter drill bit
GB2279095A (en) * 1993-06-15 1994-12-21 Smith International Ultra hard insert cutters for heel row rotary cone rock bit applications
US5586612A (en) * 1995-01-26 1996-12-24 Baker Hughes Incorporated Roller cone bit with positive and negative offset and smooth running configuration
GB2319549A (en) * 1996-04-10 1998-05-27 Smith International Rolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting duty
GB2316112A (en) * 1996-08-12 1998-02-18 Baker Hughes Inc Rotary bit having shear cutting elements

Also Published As

Publication number Publication date
GB0227670D0 (en) 2003-01-08
GB2378725A (en) 2003-02-19

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Legal Events

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

Effective date: 20111118