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GB2332691B - Improvements in or relating to cutting structures for rotary drill bits - Google Patents

Improvements in or relating to cutting structures for rotary drill bits

Info

Publication number
GB2332691B
GB2332691B GB9906511A GB9906511A GB2332691B GB 2332691 B GB2332691 B GB 2332691B GB 9906511 A GB9906511 A GB 9906511A GB 9906511 A GB9906511 A GB 9906511A GB 2332691 B GB2332691 B GB 2332691B
Authority
GB
United Kingdom
Prior art keywords
relating
drill bits
rotary drill
cutting structures
cutting
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 - Lifetime
Application number
GB9906511A
Other versions
GB9906511D0 (en
GB2332691A (en
Inventor
John Michael Fuller
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.)
Camco Drilling Group Ltd
Original Assignee
Camco Drilling Group 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
Priority claimed from GBGB9621216.2A external-priority patent/GB9621216D0/en
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Publication of GB9906511D0 publication Critical patent/GB9906511D0/en
Publication of GB2332691A publication Critical patent/GB2332691A/en
Application granted granted Critical
Publication of GB2332691B publication Critical patent/GB2332691B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • 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
    • E21B10/5671—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts with chip breaking arrangements
    • 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
    • E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type 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)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
GB9906511A 1996-10-11 1997-10-10 Improvements in or relating to cutting structures for rotary drill bits Expired - Lifetime GB2332691B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9621216.2A GB9621216D0 (en) 1996-10-11 1996-10-11 Improvements in or relating to cutting structures for rotary drill bits
GB9721408A GB2318371B (en) 1996-10-11 1997-10-10 Improvements in or relating to cutting structures for rotary drill bits

Publications (3)

Publication Number Publication Date
GB9906511D0 GB9906511D0 (en) 1999-05-12
GB2332691A GB2332691A (en) 1999-06-30
GB2332691B true GB2332691B (en) 2000-04-12

Family

ID=26310207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9906511A Expired - Lifetime GB2332691B (en) 1996-10-11 1997-10-10 Improvements in or relating to cutting structures for rotary drill bits

Country Status (1)

Country Link
GB (1) GB2332691B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6328117B1 (en) * 2000-04-06 2001-12-11 Baker Hughes Incorporated Drill bit having a fluid course with chip breaker
US6527065B1 (en) * 2000-08-30 2003-03-04 Baker Hughes Incorporated Superabrasive cutting elements for rotary drag bits configured for scooping a formation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303136A (en) * 1979-05-04 1981-12-01 Smith International, Inc. Fluid passage formed by diamond insert studs for drag bits
US5115873A (en) * 1991-01-24 1992-05-26 Baker Hughes Incorporated Method and appartus for directing drilling fluid to the cutting edge of a cutter
GB2298666A (en) * 1995-02-28 1996-09-11 Baker Hughes Inc Earth boring bit with chip breaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303136A (en) * 1979-05-04 1981-12-01 Smith International, Inc. Fluid passage formed by diamond insert studs for drag bits
US5115873A (en) * 1991-01-24 1992-05-26 Baker Hughes Incorporated Method and appartus for directing drilling fluid to the cutting edge of a cutter
GB2298666A (en) * 1995-02-28 1996-09-11 Baker Hughes Inc Earth boring bit with chip breaker

Also Published As

Publication number Publication date
GB9906511D0 (en) 1999-05-12
GB2332691A (en) 1999-06-30

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20171009