BE506074A - - Google Patents

Info

Publication number
BE506074A
BE506074A BE506074DA BE506074A BE 506074 A BE506074 A BE 506074A BE 506074D A BE506074D A BE 506074DA BE 506074 A BE506074 A BE 506074A
Authority
BE
Belgium
Prior art keywords
foil
tubes
percussion device
air
percussion
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE506074A publication Critical patent/BE506074A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B6/00Drives for drilling with combined rotary and percussive action

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)
  • Earth Drilling (AREA)
BE506074D BE506074A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE506074A true BE506074A (enrdf_load_stackoverflow)

Family

ID=146441

Family Applications (1)

Application Number Title Priority Date Filing Date
BE506074D BE506074A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE506074A (enrdf_load_stackoverflow)

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