BR8406134A - ROTARY DRILL BIT - Google Patents

ROTARY DRILL BIT

Info

Publication number
BR8406134A
BR8406134A BR8406134A BR8406134A BR8406134A BR 8406134 A BR8406134 A BR 8406134A BR 8406134 A BR8406134 A BR 8406134A BR 8406134 A BR8406134 A BR 8406134A BR 8406134 A BR8406134 A BR 8406134A
Authority
BR
Brazil
Prior art keywords
drill bit
rotary drill
rotary
bit
drill
Prior art date
Application number
BR8406134A
Other languages
Portuguese (pt)
Inventor
John Denzil Barr
Michael Thomas Wardley
Original Assignee
Nl Petroleum Prod
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 GB838332343A external-priority patent/GB8332343D0/en
Priority claimed from GB848405179A external-priority patent/GB8405179D0/en
Application filed by Nl Petroleum Prod filed Critical Nl Petroleum Prod
Publication of BR8406134A publication Critical patent/BR8406134A/en

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)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Surgical Instruments (AREA)
  • Drilling Tools (AREA)
  • Holo Graphy (AREA)
BR8406134A 1983-12-03 1984-11-30 ROTARY DRILL BIT BR8406134A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838332343A GB8332343D0 (en) 1983-12-03 1983-12-03 Rotary drill bits
GB848405179A GB8405179D0 (en) 1984-02-28 1984-02-28 Rotary drill bits

Publications (1)

Publication Number Publication Date
BR8406134A true BR8406134A (en) 1985-09-24

Family

ID=26287070

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8406134A BR8406134A (en) 1983-12-03 1984-11-30 ROTARY DRILL BIT

Country Status (5)

Country Link
EP (1) EP0145422A3 (en)
AU (1) AU3592584A (en)
BR (1) BR8406134A (en)
GB (1) GB2151283B (en)
NO (1) NO844770L (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU578637B2 (en) * 1983-12-03 1988-11-03 N.L. Petroleum Products Ltd. Rotary drill bits and cutting elements for such bits
GB8418481D0 (en) * 1984-07-19 1984-08-22 Nl Petroleum Prod Rotary drill bits
US4781256A (en) * 1984-12-14 1988-11-01 Nl Petroleum Products Limited Cutting structures for rotary drill bits
GB8431633D0 (en) * 1984-12-14 1985-01-30 Nl Petroleum Prod Cutting structures for rotary drill bits
US4694918A (en) * 1985-04-29 1987-09-22 Smith International, Inc. Rock bit with diamond tip inserts
AU577958B2 (en) * 1985-08-22 1988-10-06 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive compact
US4730682A (en) * 1985-12-23 1988-03-15 Ingersoll-Rand Company Erosion resistant rock drill bit
US4719979A (en) * 1986-03-24 1988-01-19 Smith International, Inc. Expendable diamond drag bit
US5111895A (en) * 1988-03-11 1992-05-12 Griffin Nigel D Cutting elements for rotary drill bits
GB8805789D0 (en) * 1988-03-11 1988-04-13 Reed Tool Co Improvements in/relating to cutter assemblies for rotary drill bits
GB2218131B (en) * 1988-05-06 1992-03-25 Reed Tool Co Improvements in or relating to rotary drill bits
EP0384623B1 (en) * 1989-02-14 1994-03-02 Camco Drilling Group Limited Improvements in or relating to cutting elements for rotary drill bits
GB2273306B (en) * 1992-12-10 1996-12-18 Camco Drilling Group Ltd Improvements in or relating to cutting elements for rotary drill bits

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2719330C3 (en) * 1977-04-30 1984-01-05 Christensen, Inc., 84115 Salt Lake City, Utah Rotary drill bit
US4244432A (en) * 1978-06-08 1981-01-13 Christensen, Inc. Earth-boring drill bits
DE3175194D1 (en) * 1980-01-10 1986-10-02 Stonehouse Ltd Rotary drill bits
US4593777A (en) * 1983-02-22 1986-06-10 Nl Industries, Inc. Drag bit and cutters

Also Published As

Publication number Publication date
NO844770L (en) 1985-06-04
EP0145422A3 (en) 1986-05-28
GB8430291D0 (en) 1985-01-09
EP0145422A2 (en) 1985-06-19
GB2151283A (en) 1985-07-17
GB2151283B (en) 1987-04-08
AU3592584A (en) 1985-06-06

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