GB2317195B - Cutting structure of a drill bit and a fixed cutter drill bit - Google Patents

Cutting structure of a drill bit and a fixed cutter drill bit

Info

Publication number
GB2317195B
GB2317195B GB9721963A GB9721963A GB2317195B GB 2317195 B GB2317195 B GB 2317195B GB 9721963 A GB9721963 A GB 9721963A GB 9721963 A GB9721963 A GB 9721963A GB 2317195 B GB2317195 B GB 2317195B
Authority
GB
United Kingdom
Prior art keywords
drill bit
cutting structure
fixed cutter
cutter drill
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
GB9721963A
Other versions
GB2317195A (en
GB9721963D0 (en
Inventor
Graham Mensa-Wilmot
Carl W Keith
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 US08/288,489 external-priority patent/US5582261A/en
Priority claimed from US08/310,862 external-priority patent/US5549171A/en
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of GB9721963D0 publication Critical patent/GB9721963D0/en
Publication of GB2317195A publication Critical patent/GB2317195A/en
Application granted granted Critical
Publication of GB2317195B publication Critical patent/GB2317195B/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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other 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
    • E21B10/54—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
    • E21B10/5673—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a non planar or non circular cutting face
    • 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

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)
GB9721963A 1994-08-10 1995-08-08 Cutting structure of a drill bit and a fixed cutter drill bit Expired - Lifetime GB2317195B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/288,489 US5582261A (en) 1994-08-10 1994-08-10 Drill bit having enhanced cutting structure and stabilizing features
US08/310,862 US5549171A (en) 1994-08-10 1994-09-22 Drill bit with performance-improving cutting structure
GB9516253A GB2292163B (en) 1994-08-10 1995-08-08 Drill bit having enhanced cutting structure and stabilizing features

Publications (3)

Publication Number Publication Date
GB9721963D0 GB9721963D0 (en) 1997-12-17
GB2317195A GB2317195A (en) 1998-03-18
GB2317195B true GB2317195B (en) 1998-07-15

Family

ID=27267855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9721963A Expired - Lifetime GB2317195B (en) 1994-08-10 1995-08-08 Cutting structure of a drill bit and a fixed cutter drill bit

Country Status (1)

Country Link
GB (1) GB2317195B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2455638A (en) * 2007-12-07 2009-06-24 Smith International A drill bit and a method of drilling

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361496B (en) * 1997-06-14 2002-02-20 Camco Internat Improvements in or relating to rotary drill bits
DE60140617D1 (en) 2000-09-20 2010-01-07 Camco Int Uk Ltd POLYCRYSTALLINE DIAMOND WITH A SURFACE ENRICHED ON CATALYST MATERIAL
US6601661B2 (en) * 2001-09-17 2003-08-05 Baker Hughes Incorporated Secondary cutting structure
US8448725B2 (en) 2004-12-10 2013-05-28 Smith International, Inc. Impact resistant PDC drill bit
GB2434391B (en) * 2004-12-10 2008-04-16 Smith International Drill bit and method of cutting a borehole
US7455125B2 (en) * 2005-02-22 2008-11-25 Baker Hughes Incorporated Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereof
GB2453875C (en) 2006-10-02 2009-09-16 Smith International Drill bits with dropping tendencies
US7703557B2 (en) 2007-06-11 2010-04-27 Smith International, Inc. Fixed cutter bit with backup cutter elements on primary blades
US8100202B2 (en) 2008-04-01 2012-01-24 Smith International, Inc. Fixed cutter bit with backup cutter elements on secondary blades

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244039A (en) * 1991-10-31 1993-09-14 Camco Drilling Group Ltd. Rotary drill bits
US5531281A (en) * 1993-07-16 1996-07-02 Camco Drilling Group Ltd. Rotary drilling tools

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244039A (en) * 1991-10-31 1993-09-14 Camco Drilling Group Ltd. Rotary drill bits
US5531281A (en) * 1993-07-16 1996-07-02 Camco Drilling Group Ltd. Rotary drilling tools

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2455638A (en) * 2007-12-07 2009-06-24 Smith International A drill bit and a method of drilling
GB2455638B (en) * 2007-12-07 2010-06-30 Smith International A drill bit and a method of drilling

Also Published As

Publication number Publication date
GB2317195A (en) 1998-03-18
GB9721963D0 (en) 1997-12-17

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Legal Events

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

Expiry date: 20150807