GB2402688B - Drill bit - Google Patents

Drill bit

Info

Publication number
GB2402688B
GB2402688B GB0419172A GB0419172A GB2402688B GB 2402688 B GB2402688 B GB 2402688B GB 0419172 A GB0419172 A GB 0419172A GB 0419172 A GB0419172 A GB 0419172A GB 2402688 B GB2402688 B GB 2402688B
Authority
GB
United Kingdom
Prior art keywords
drill bit
drill
bit
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
GB0419172A
Other versions
GB0419172D0 (en
GB2402688A (en
Inventor
Amardeep Singh
Quan Van Nguyen
Sujian Huang
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 US09/589,260 external-priority patent/US6688410B1/en
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of GB0419172D0 publication Critical patent/GB0419172D0/en
Publication of GB2402688A publication Critical patent/GB2402688A/en
Application granted granted Critical
Publication of GB2402688B publication Critical patent/GB2402688B/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1092—Gauge section of drill 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
    • E21B10/16—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
    • E21B10/08—Roller bits
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
    • 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)
GB0419172A 2000-06-07 2001-06-06 Drill bit Expired - Fee Related GB2402688B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/589,260 US6688410B1 (en) 2000-06-07 2000-06-07 Hydro-lifter rock bit with PDC inserts
GB0113771A GB2364340B (en) 2000-06-07 2001-06-06 Drill bit

Publications (3)

Publication Number Publication Date
GB0419172D0 GB0419172D0 (en) 2004-09-29
GB2402688A GB2402688A (en) 2004-12-15
GB2402688B true GB2402688B (en) 2005-01-19

Family

ID=33477740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0419172A Expired - Fee Related GB2402688B (en) 2000-06-07 2001-06-06 Drill bit

Country Status (1)

Country Link
GB (1) GB2402688B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8528667B2 (en) * 2010-10-01 2013-09-10 Varel International, Ind., L.P. Wear resistant material at the leading edge of the leg for a rotary cone drill bit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5074367A (en) * 1990-05-11 1991-12-24 Rock Bit Industries, Inc. Rock bit with improved shank protection
US5289889A (en) * 1993-01-21 1994-03-01 Marvin Gearhart Roller cone core bit with spiral stabilizers
US5415243A (en) * 1994-01-24 1995-05-16 Smith International, Inc. Rock bit borhole back reaming method
US5890550A (en) * 1997-05-09 1999-04-06 Baker Hughes Incorporation Earth-boring bit with wear-resistant material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5074367A (en) * 1990-05-11 1991-12-24 Rock Bit Industries, Inc. Rock bit with improved shank protection
US5289889A (en) * 1993-01-21 1994-03-01 Marvin Gearhart Roller cone core bit with spiral stabilizers
US5415243A (en) * 1994-01-24 1995-05-16 Smith International, Inc. Rock bit borhole back reaming method
US5890550A (en) * 1997-05-09 1999-04-06 Baker Hughes Incorporation Earth-boring bit with wear-resistant material

Also Published As

Publication number Publication date
GB0419172D0 (en) 2004-09-29
GB2402688A (en) 2004-12-15

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Legal Events

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

Effective date: 20150606