FR868923A - Method and device for carrying out boreholes - Google Patents

Method and device for carrying out boreholes

Info

Publication number
FR868923A
FR868923A FR868923DA FR868923A FR 868923 A FR868923 A FR 868923A FR 868923D A FR868923D A FR 868923DA FR 868923 A FR868923 A FR 868923A
Authority
FR
France
Prior art keywords
carrying
boreholes
out boreholes
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOHANN KELLER FA
Original Assignee
JOHANN KELLER FA
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 JOHANN KELLER FA filed Critical JOHANN KELLER FA
Application granted granted Critical
Publication of FR868923A publication Critical patent/FR868923A/en
Expired legal-status Critical Current

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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
FR868923D 1939-11-27 1940-12-31 Method and device for carrying out boreholes Expired FR868923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE868923X 1939-11-27

Publications (1)

Publication Number Publication Date
FR868923A true FR868923A (en) 1942-01-20

Family

ID=6802682

Family Applications (1)

Application Number Title Priority Date Filing Date
FR868923D Expired FR868923A (en) 1939-11-27 1940-12-31 Method and device for carrying out boreholes

Country Status (1)

Country Link
FR (1) FR868923A (en)

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