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GB2220016B - 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
GB2220016B
GB2220016B GB8909875A GB8909875A GB2220016B GB 2220016 B GB2220016 B GB 2220016B GB 8909875 A GB8909875 A GB 8909875A GB 8909875 A GB8909875 A GB 8909875A GB 2220016 B GB2220016 B GB 2220016B
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
GB8909875A
Other versions
GB8909875D0 (en
GB2220016A (en
Inventor
Joseph Antonio Gasan
Malcolm Roy Taylor
Phillip Bex
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
Reed Tool Co 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 Reed Tool Co Ltd filed Critical Reed Tool Co Ltd
Publication of GB8909875D0 publication Critical patent/GB8909875D0/en
Priority to DE8989306124T priority Critical patent/DE68905106T2/en
Priority to EP89306124A priority patent/EP0352895B1/en
Priority to US07/371,711 priority patent/US4987800A/en
Priority to CA000604286A priority patent/CA1311744C/en
Publication of GB2220016A publication Critical patent/GB2220016A/en
Application granted granted Critical
Publication of GB2220016B publication Critical patent/GB2220016B/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
    • 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

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)
  • Drilling Tools (AREA)
GB8909875A 1988-06-28 1989-04-28 Improvements in or relating to cutting elements for rotary drill bits Expired - Lifetime GB2220016B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8989306124T DE68905106T2 (en) 1988-06-28 1989-06-16 CUTTING ELEMENTS FOR ROTARY DRILL CHISELS.
EP89306124A EP0352895B1 (en) 1988-06-28 1989-06-16 Cutting elements for rotary drill bits
US07/371,711 US4987800A (en) 1988-06-28 1989-06-26 Cutter elements for rotary drill bits
CA000604286A CA1311744C (en) 1988-06-28 1989-06-28 Cutting elements for rotary drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888815333A GB8815333D0 (en) 1988-06-28 1988-06-28 Improvements in/relating to cutting elements for rotary drill bits

Publications (3)

Publication Number Publication Date
GB8909875D0 GB8909875D0 (en) 1989-06-14
GB2220016A GB2220016A (en) 1989-12-28
GB2220016B true GB2220016B (en) 1992-05-20

Family

ID=10639478

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888815333A Pending GB8815333D0 (en) 1988-06-28 1988-06-28 Improvements in/relating to cutting elements for rotary drill bits
GB8909875A Expired - Lifetime GB2220016B (en) 1988-06-28 1989-04-28 Improvements in or relating to cutting elements for rotary drill bits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888815333A Pending GB8815333D0 (en) 1988-06-28 1988-06-28 Improvements in/relating to cutting elements for rotary drill bits

Country Status (2)

Country Link
GB (2) GB8815333D0 (en)
ZA (1) ZA894705B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234542B (en) * 1989-08-04 1993-03-31 Reed Tool Co Improvements in or relating to cutting elements for rotary drill bits

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322214B1 (en) * 1987-12-22 1992-06-17 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive product

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322214B1 (en) * 1987-12-22 1992-06-17 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive product

Also Published As

Publication number Publication date
GB8909875D0 (en) 1989-06-14
ZA894705B (en) 1991-12-24
GB8815333D0 (en) 1988-08-03
GB2220016A (en) 1989-12-28

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Legal Events

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

Effective date: 19940428