SE9001390D0 - Borrverktyg - Google Patents

Borrverktyg

Info

Publication number
SE9001390D0
SE9001390D0 SE9001390A SE9001390A SE9001390D0 SE 9001390 D0 SE9001390 D0 SE 9001390D0 SE 9001390 A SE9001390 A SE 9001390A SE 9001390 A SE9001390 A SE 9001390A SE 9001390 D0 SE9001390 D0 SE 9001390D0
Authority
SE
Sweden
Prior art keywords
ring
drilling
drilling tools
thickened
spring
Prior art date
Application number
SE9001390A
Other languages
English (en)
Other versions
SE9001390L (sv
Inventor
K Andersson
Original Assignee
Atlas Copco Mct 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 Atlas Copco Mct Ab filed Critical Atlas Copco Mct Ab
Priority to SE9001390A priority Critical patent/SE9001390L/sv
Publication of SE9001390D0 publication Critical patent/SE9001390D0/sv
Publication of SE9001390L publication Critical patent/SE9001390L/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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)
SE9001390A 1990-04-19 1990-04-19 Borrverktyg SE9001390L (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9001390A SE9001390L (sv) 1990-04-19 1990-04-19 Borrverktyg

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001390A SE9001390L (sv) 1990-04-19 1990-04-19 Borrverktyg

Publications (2)

Publication Number Publication Date
SE9001390D0 true SE9001390D0 (sv) 1990-04-19
SE9001390L SE9001390L (sv) 1991-10-20

Family

ID=20379212

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001390A SE9001390L (sv) 1990-04-19 1990-04-19 Borrverktyg

Country Status (1)

Country Link
SE (1) SE9001390L (sv)

Also Published As

Publication number Publication date
SE9001390L (sv) 1991-10-20

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