GB8611449D0 - Rotary drill bits - Google Patents

Rotary drill bits

Info

Publication number
GB8611449D0
GB8611449D0 GB868611449A GB8611449A GB8611449D0 GB 8611449 D0 GB8611449 D0 GB 8611449D0 GB 868611449 A GB868611449 A GB 868611449A GB 8611449 A GB8611449 A GB 8611449A GB 8611449 D0 GB8611449 D0 GB 8611449D0
Authority
GB
United Kingdom
Prior art keywords
drill bits
rotary drill
rotary
bits
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
GB868611449A
Other versions
GB2190120A (en
GB2190120B (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.)
NL Petroleum Products Ltd
Original Assignee
NL Petroleum Products Ltd
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
Application filed by NL Petroleum Products Ltd filed Critical NL Petroleum Products Ltd
Priority to GB8611449A priority Critical patent/GB2190120B/en
Publication of GB8611449D0 publication Critical patent/GB8611449D0/en
Publication of GB2190120A publication Critical patent/GB2190120A/en
Application granted granted Critical
Publication of GB2190120B publication Critical patent/GB2190120B/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
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Earth Drilling (AREA)
GB8611449A 1986-05-10 1986-05-10 Improvements in or relating to rotary drill bits Expired - Fee Related GB2190120B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8611449A GB2190120B (en) 1986-05-10 1986-05-10 Improvements in or relating to rotary drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8611449A GB2190120B (en) 1986-05-10 1986-05-10 Improvements in or relating to rotary drill bits

Publications (3)

Publication Number Publication Date
GB8611449D0 true GB8611449D0 (en) 1986-06-18
GB2190120A GB2190120A (en) 1987-11-11
GB2190120B GB2190120B (en) 1990-02-14

Family

ID=10597666

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8611449A Expired - Fee Related GB2190120B (en) 1986-05-10 1986-05-10 Improvements in or relating to rotary drill bits

Country Status (1)

Country Link
GB (1) GB2190120B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033560A (en) * 1990-07-24 1991-07-23 Dresser Industries, Inc. Drill bit with decreasing diameter cutters
GB2252574B (en) * 1991-02-01 1995-01-18 Reed Tool Co Rotary drill bits and methods of designing such drill bits
US6394202B2 (en) * 1999-06-30 2002-05-28 Smith International, Inc. Drill bit having diamond impregnated inserts primary cutting structure
US6460631B2 (en) 1999-08-26 2002-10-08 Baker Hughes Incorporated Drill bits with reduced exposure of cutters
US8141665B2 (en) 2005-12-14 2012-03-27 Baker Hughes Incorporated Drill bits with bearing elements for reducing exposure of cutters
US7814997B2 (en) 2007-06-14 2010-10-19 Baker Hughes Incorporated Interchangeable bearing blocks for drill bits, and drill bits including same
US9309723B2 (en) 2009-10-05 2016-04-12 Baker Hughes Incorporated Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of directional and off center drilling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098362A (en) * 1976-11-30 1978-07-04 General Electric Company Rotary drill bit and method for making same

Also Published As

Publication number Publication date
GB2190120A (en) 1987-11-11
GB2190120B (en) 1990-02-14

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Legal Events

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

Effective date: 19960510