AT296920B - Drilling device, especially for drilling in the ground or loose rock - Google Patents

Drilling device, especially for drilling in the ground or loose rock

Info

Publication number
AT296920B
AT296920B AT167670A AT167670A AT296920B AT 296920 B AT296920 B AT 296920B AT 167670 A AT167670 A AT 167670A AT 167670 A AT167670 A AT 167670A AT 296920 B AT296920 B AT 296920B
Authority
AT
Austria
Prior art keywords
drilling
ground
loose rock
drilling device
rock
Prior art date
Application number
AT167670A
Other languages
German (de)
Inventor
Karl Harald Hoernsten
Original Assignee
Nya Asfalt 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 Nya Asfalt Ab filed Critical Nya Asfalt Ab
Application granted granted Critical
Publication of AT296920B publication Critical patent/AT296920B/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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion

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)
  • Earth Drilling (AREA)
AT167670A 1969-02-28 1970-02-24 Drilling device, especially for drilling in the ground or loose rock AT296920B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02841/69A SE329138B (en) 1969-02-28 1969-02-28

Publications (1)

Publication Number Publication Date
AT296920B true AT296920B (en) 1972-03-10

Family

ID=20260825

Family Applications (1)

Application Number Title Priority Date Filing Date
AT167670A AT296920B (en) 1969-02-28 1970-02-24 Drilling device, especially for drilling in the ground or loose rock

Country Status (6)

Country Link
US (1) US3722610A (en)
AT (1) AT296920B (en)
DE (1) DE2007691A1 (en)
FR (1) FR2033069A5 (en)
GB (1) GB1231556A (en)
SE (1) SE329138B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9401528U1 (en) * 1994-01-26 1994-05-19 Gartec Geo- Und Umwelttechnik Gmbh, 03253 Doberlug-Kirchhain Drill bits for the production of pilot holes for drillings and the like.
US7610970B2 (en) * 2006-12-07 2009-11-03 Schlumberger Technology Corporation Apparatus for eliminating net drill bit torque and controlling drill bit walk
CN114382434B (en) * 2021-12-22 2023-07-14 中国石油大学(华东) A self-drilling and cementing device and method for surface conduits used in deep water

Also Published As

Publication number Publication date
SE329138B (en) 1970-10-05
FR2033069A5 (en) 1970-11-27
DE2007691A1 (en) 1970-09-17
GB1231556A (en) 1971-05-12
US3722610A (en) 1973-03-27

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Legal Events

Date Code Title Description
A1J Withdrawal paragraph 166 lit. 6
ELJ Ceased due to non-payment of the annual fee