BE352137A - - Google Patents

Info

Publication number
BE352137A
BE352137A BE352137DA BE352137A BE 352137 A BE352137 A BE 352137A BE 352137D A BE352137D A BE 352137DA BE 352137 A BE352137 A BE 352137A
Authority
BE
Belgium
Prior art keywords
tool
foil
holes
sleeve
wall
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE352137A publication Critical patent/BE352137A/fr

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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • E21B21/011—Dust eliminating or dust removing while drilling
    • E21B21/014—Preventing exhaust air from the drill motor from blowing-off towards the working face

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)
  • Auxiliary Devices For Music (AREA)
BE352137D BE352137A (enExample)

Publications (1)

Publication Number Publication Date
BE352137A true BE352137A (enExample)

Family

ID=26947

Family Applications (1)

Application Number Title Priority Date Filing Date
BE352137D BE352137A (enExample)

Country Status (1)

Country Link
BE (1) BE352137A (enExample)

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