SE8103451L - Borrhuvud - Google Patents

Borrhuvud

Info

Publication number
SE8103451L
SE8103451L SE8103451A SE8103451A SE8103451L SE 8103451 L SE8103451 L SE 8103451L SE 8103451 A SE8103451 A SE 8103451A SE 8103451 A SE8103451 A SE 8103451A SE 8103451 L SE8103451 L SE 8103451L
Authority
SE
Sweden
Prior art keywords
cutting
rows
cylinder
cylinders
cutting elements
Prior art date
Application number
SE8103451A
Other languages
Unknown language ( )
English (en)
Other versions
SE453414B (sv
Inventor
A Persson
S Liljekvist
Original Assignee
Sandvik Ab
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 SE7900922A external-priority patent/SE463110B/sv
Application filed by Sandvik Ab filed Critical Sandvik Ab
Priority to SE8103451A priority Critical patent/SE453414B/sv
Publication of SE8103451L publication Critical patent/SE8103451L/sv
Publication of SE453414B publication Critical patent/SE453414B/sv

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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
SE8103451A 1979-02-02 1981-06-02 Borrhuvud innefattande over ett lagersystem roterbara skerrullar SE453414B (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8103451A SE453414B (sv) 1979-02-02 1981-06-02 Borrhuvud innefattande over ett lagersystem roterbara skerrullar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7900922A SE463110B (sv) 1979-02-02 1979-02-02 Saett och anordning foer stigortsdrivning
SE8103451A SE453414B (sv) 1979-02-02 1981-06-02 Borrhuvud innefattande over ett lagersystem roterbara skerrullar

Publications (2)

Publication Number Publication Date
SE8103451L true SE8103451L (sv) 1981-06-02
SE453414B SE453414B (sv) 1988-02-01

Family

ID=26657197

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8103451A SE453414B (sv) 1979-02-02 1981-06-02 Borrhuvud innefattande over ett lagersystem roterbara skerrullar

Country Status (1)

Country Link
SE (1) SE453414B (sv)

Also Published As

Publication number Publication date
SE453414B (sv) 1988-02-01

Similar Documents

Publication Publication Date Title
US4187922A (en) Varied pitch rotary rock bit
US5234064A (en) Roller cutter assembly having adjustable ring cutter spacing
US3003370A (en) Method of making rock bit cutter
SU1654515A1 (ru) Буровое шарошечное долото
SE442318B (sv) Roterbart sker for jordborrningsutrustning med tetningsorgan
SE7900922L (sv) Sett och anordning for stigortsdrivning
SE8102174L (sv) Kalibreringsarrangemang vid en jordborr
US2955810A (en) Cutting device for the continuous cutting of coal and the like
US3861477A (en) Drilling bits for boring holes and wells
SE8103451L (sv) Borrhuvud
US2894727A (en) Drilling bit
US4248314A (en) Shaft drill bit with overlapping cutter arrangement
CN86100885A (zh) 一种改进的沟槽切削型钻头
US2634105A (en) Drilling bit
US2994390A (en) Rock bit cutter
US4832136A (en) Drill bit and roller cutter for said drill bit
US2367637A (en) Drilling bit
US1325944A (en) Rotary boring-drill.
USRE34167E (en) Drill bit and roller cutter for said drill bit
SU1435746A1 (ru) Шарошка бурового долота
USRE25684E (en) Method of making rock bit cutter
GB1121172A (en) Tunnelling machine
US1796602A (en) Rock-bit cone
SU607972A1 (ru) Бурова коронка
SU1004600A1 (ru) Шарошка дл бурени скважин большого диаметра

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8103451-4

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8103451-4

Format of ref document f/p: F