SE7501830L - Borrstang for slaende bergborrning - Google Patents

Borrstang for slaende bergborrning

Info

Publication number
SE7501830L
SE7501830L SE7501830A SE7501830A SE7501830L SE 7501830 L SE7501830 L SE 7501830L SE 7501830 A SE7501830 A SE 7501830A SE 7501830 A SE7501830 A SE 7501830A SE 7501830 L SE7501830 L SE 7501830L
Authority
SE
Sweden
Prior art keywords
drilling
striking
mountain
rod
drilling rod
Prior art date
Application number
SE7501830A
Other languages
English (en)
Other versions
SE421336B (sv
Inventor
E Ahlberg
I Carlvik
A Hegglund
S Liljekvist
Original Assignee
Sandvik Ab
Atlas Copco 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
Application filed by Sandvik Ab, Atlas Copco Ab filed Critical Sandvik Ab
Priority to SE7501830A priority Critical patent/SE421336B/sv
Publication of SE7501830L publication Critical patent/SE7501830L/sv
Publication of SE421336B publication Critical patent/SE421336B/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
SE7501830A 1975-02-19 1975-02-19 Borrstang for slaende bergborrning SE421336B (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE7501830A SE421336B (sv) 1975-02-19 1975-02-19 Borrstang for slaende bergborrning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7501830A SE421336B (sv) 1975-02-19 1975-02-19 Borrstang for slaende bergborrning

Publications (2)

Publication Number Publication Date
SE7501830L true SE7501830L (sv) 1976-08-20
SE421336B SE421336B (sv) 1981-12-14

Family

ID=20323724

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7501830A SE421336B (sv) 1975-02-19 1975-02-19 Borrstang for slaende bergborrning

Country Status (1)

Country Link
SE (1) SE421336B (sv)

Also Published As

Publication number Publication date
SE421336B (sv) 1981-12-14

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