GB2273946B - Improvements in or relating to rotary drill bits - Google Patents

Improvements in or relating to rotary drill bits

Info

Publication number
GB2273946B
GB2273946B GB9227135A GB9227135A GB2273946B GB 2273946 B GB2273946 B GB 2273946B GB 9227135 A GB9227135 A GB 9227135A GB 9227135 A GB9227135 A GB 9227135A GB 2273946 B GB2273946 B GB 2273946B
Authority
GB
United Kingdom
Prior art keywords
relating
drill bits
rotary drill
rotary
bits
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
GB9227135A
Other languages
English (en)
Other versions
GB9227135D0 (en
GB2273946A (en
Inventor
Kelly Hollister
David Truax
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
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9227135A priority Critical patent/GB2273946B/en
Publication of GB9227135D0 publication Critical patent/GB9227135D0/en
Priority to EP93310193A priority patent/EP0605151A1/de
Publication of GB2273946A publication Critical patent/GB2273946A/en
Application granted granted Critical
Publication of GB2273946B publication Critical patent/GB2273946B/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

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)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB9227135A 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits Expired - Fee Related GB2273946B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9227135A GB2273946B (en) 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits
EP93310193A EP0605151A1 (de) 1992-12-31 1993-12-16 Drehbohrmeissel mit Stabilisierungselementen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9227135A GB2273946B (en) 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits

Publications (3)

Publication Number Publication Date
GB9227135D0 GB9227135D0 (en) 1993-02-24
GB2273946A GB2273946A (en) 1994-07-06
GB2273946B true GB2273946B (en) 1996-10-09

Family

ID=10727347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9227135A Expired - Fee Related GB2273946B (en) 1992-12-31 1992-12-31 Improvements in or relating to rotary drill bits

Country Status (2)

Country Link
EP (1) EP0605151A1 (de)
GB (1) GB2273946B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8448726B2 (en) 2005-12-14 2013-05-28 Baker Hughes Incorporated Drill bits with bearing elements for reducing exposure of cutters

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505273A (en) * 1994-01-24 1996-04-09 Smith International, Inc. Compound diamond cutter
EP0707130B1 (de) * 1994-10-15 2003-07-16 Camco Drilling Group Limited Drehbohrmeissel
GB2294069B (en) * 1994-10-15 1998-10-28 Camco Drilling Group Ltd Improvements in or relating to rotary drills bits
US5992548A (en) * 1995-08-15 1999-11-30 Diamond Products International, Inc. Bi-center bit with oppositely disposed cutting surfaces
US6298930B1 (en) * 1999-08-26 2001-10-09 Baker Hughes Incorporated Drill bits with controlled cutter loading and depth of cut
US6460631B2 (en) 1999-08-26 2002-10-08 Baker Hughes Incorporated Drill bits with reduced exposure of cutters
US6568492B2 (en) 2001-03-02 2003-05-27 Varel International, Inc. Drag-type casing mill/drill bit
US6659199B2 (en) * 2001-08-13 2003-12-09 Baker Hughes Incorporated Bearing elements for drill bits, drill bits so equipped, and method of drilling
US7360608B2 (en) 2004-09-09 2008-04-22 Baker Hughes Incorporated Rotary drill bits including at least one substantially helically extending feature and methods of operation
US7814997B2 (en) 2007-06-14 2010-10-19 Baker Hughes Incorporated Interchangeable bearing blocks for drill bits, and drill bits including same
US8943663B2 (en) 2009-04-15 2015-02-03 Baker Hughes Incorporated Methods of forming and repairing cutting element pockets in earth-boring tools with depth-of-cut control features, and tools and structures formed by such methods
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090492A (en) * 1991-02-12 1992-02-25 Dresser Industries, Inc. Drill bit with vibration stabilizers
WO1993013290A1 (en) * 1991-12-30 1993-07-08 Dresser Industries, Inc. Drill bit with improved insert cutter pattern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8418481D0 (en) * 1984-07-19 1984-08-22 Nl Petroleum Prod Rotary drill bits
GB8711255D0 (en) * 1987-05-13 1987-06-17 Nl Petroleum Prod Rotary drill bits
US4981184A (en) * 1988-11-21 1991-01-01 Smith International, Inc. Diamond drag bit for soft formations

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090492A (en) * 1991-02-12 1992-02-25 Dresser Industries, Inc. Drill bit with vibration stabilizers
WO1993013290A1 (en) * 1991-12-30 1993-07-08 Dresser Industries, Inc. Drill bit with improved insert cutter pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8448726B2 (en) 2005-12-14 2013-05-28 Baker Hughes Incorporated Drill bits with bearing elements for reducing exposure of cutters

Also Published As

Publication number Publication date
GB9227135D0 (en) 1993-02-24
GB2273946A (en) 1994-07-06
EP0605151A1 (de) 1994-07-06

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Legal Events

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

Effective date: 19971231