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GB2251879B - Improvements in or relating to cutting elements for rotary drill bits - Google Patents

Improvements in or relating to cutting elements for rotary drill bits

Info

Publication number
GB2251879B
GB2251879B GB9203457A GB9203457A GB2251879B GB 2251879 B GB2251879 B GB 2251879B GB 9203457 A GB9203457 A GB 9203457A GB 9203457 A GB9203457 A GB 9203457A GB 2251879 B GB2251879 B GB 2251879B
Authority
GB
United Kingdom
Prior art keywords
relating
cutting elements
drill bits
rotary drill
rotary
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
GB9203457A
Other versions
GB9203457D0 (en
GB2251879A (en
Inventor
John Denzil Barr
Jr Thomas Alexander Newton
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 GB888807875A external-priority patent/GB8807875D0/en
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9203457A priority Critical patent/GB2251879B/en
Publication of GB9203457D0 publication Critical patent/GB9203457D0/en
Publication of GB2251879A publication Critical patent/GB2251879A/en
Application granted granted Critical
Publication of GB2251879B publication Critical patent/GB2251879B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P5/00—Setting gems or the like on metal parts, e.g. diamonds on tools
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
GB9203457A 1988-04-05 1992-02-19 Improvements in or relating to cutting elements for rotary drill bits Expired - Lifetime GB2251879B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9203457A GB2251879B (en) 1988-04-05 1992-02-19 Improvements in or relating to cutting elements for rotary drill bits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888807875A GB8807875D0 (en) 1988-04-05 1988-04-05 Improvements in/relating to cutting elements for rotary drill bits
GB9203457A GB2251879B (en) 1988-04-05 1992-02-19 Improvements in or relating to cutting elements for rotary drill bits

Publications (3)

Publication Number Publication Date
GB9203457D0 GB9203457D0 (en) 1992-04-08
GB2251879A GB2251879A (en) 1992-07-22
GB2251879B true GB2251879B (en) 1992-11-11

Family

ID=26293728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9203457A Expired - Lifetime GB2251879B (en) 1988-04-05 1992-02-19 Improvements in or relating to cutting elements for rotary drill bits

Country Status (1)

Country Link
GB (1) GB2251879B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0908375D0 (en) 2009-05-15 2009-06-24 Element Six Ltd A super-hard cutter element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373593A (en) * 1979-03-16 1983-02-15 Christensen, Inc. Drill bit
GB2152104A (en) * 1983-12-03 1985-07-31 Nl Petroleum Prod Rotary drill bits and cutting elements for such bits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373593A (en) * 1979-03-16 1983-02-15 Christensen, Inc. Drill bit
GB2152104A (en) * 1983-12-03 1985-07-31 Nl Petroleum Prod Rotary drill bits and cutting elements for such bits

Also Published As

Publication number Publication date
GB9203457D0 (en) 1992-04-08
GB2251879A (en) 1992-07-22

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Legal Events

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

Effective date: 19940404