NO871037L - Borkrone. - Google Patents

Borkrone.

Info

Publication number
NO871037L
NO871037L NO871037A NO871037A NO871037L NO 871037 L NO871037 L NO 871037L NO 871037 A NO871037 A NO 871037A NO 871037 A NO871037 A NO 871037A NO 871037 L NO871037 L NO 871037L
Authority
NO
Norway
Prior art keywords
bit
Prior art date
Application number
NO871037A
Other languages
English (en)
Other versions
NO871037D0 (no
Inventor
George Fyfe
Kenneth William Jones
Original Assignee
Smith International
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 Smith International filed Critical Smith International
Publication of NO871037D0 publication Critical patent/NO871037D0/no
Publication of NO871037L publication Critical patent/NO871037L/no

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
    • 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
    • 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

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)
  • Excavating Of Shafts Or Tunnels (AREA)
NO871037A 1986-03-13 1987-03-13 Borkrone. NO871037L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83943486A 1986-03-13 1986-03-13

Publications (2)

Publication Number Publication Date
NO871037D0 NO871037D0 (no) 1987-03-13
NO871037L true NO871037L (no) 1987-09-14

Family

ID=25279716

Family Applications (1)

Application Number Title Priority Date Filing Date
NO871037A NO871037L (no) 1986-03-13 1987-03-13 Borkrone.

Country Status (6)

Country Link
EP (1) EP0237359A3 (no)
AU (1) AU590826B2 (no)
BR (1) BR8701601A (no)
CA (1) CA1260923A (no)
MX (1) MX161103A (no)
NO (1) NO871037L (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846290A (en) * 1986-03-13 1989-07-11 Smith International, Inc. Underreamer with revolving diamond cutter elements
EP0370199A1 (en) * 1988-10-25 1990-05-30 General Electric Company Drill bits utilizing polycrystalline diamond grit
DE9206657U1 (de) * 1992-05-15 1993-09-16 Töpfer, Rainer, 28870 Ottersberg Rotationswerkzeug mit Hartmetalleinsätzen
CN1160431A (zh) * 1994-10-14 1997-09-24 钴碳化钨硬质合金公司 凹形切割头
US5678645A (en) * 1995-11-13 1997-10-21 Baker Hughes Incorporated Mechanically locked cutters and nozzles

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1533286A (en) * 1924-06-09 1925-04-14 Harry P Wickersham Well-drilling bit
US3830321A (en) * 1973-02-20 1974-08-20 Kennametal Inc Excavating tool and a bit for use therewith
GB1584752A (en) * 1977-05-25 1981-02-18 Transport Secretary Of State F Rock cutting tools
US4253533A (en) * 1979-11-05 1981-03-03 Smith International, Inc. Variable wear pad for crossflow drag bit
US4448269A (en) * 1981-10-27 1984-05-15 Hitachi Construction Machinery Co., Ltd. Cutter head for pit-boring machine
CA1216158A (en) * 1981-11-09 1987-01-06 Akio Hara Composite compact component and a process for the production of the same
CA1194857A (en) * 1982-02-20 1985-10-08 Nl Industries, Inc. Rotary drilling bits
GB8428829D0 (en) * 1984-11-15 1984-12-27 Brown K M Drill bit

Also Published As

Publication number Publication date
NO871037D0 (no) 1987-03-13
AU6998587A (en) 1987-09-17
AU590826B2 (en) 1989-11-16
CA1260923A (en) 1989-09-26
MX161103A (es) 1990-07-31
EP0237359A2 (en) 1987-09-16
EP0237359A3 (en) 1988-11-23
BR8701601A (pt) 1988-01-12

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