BE389403A - - Google Patents

Info

Publication number
BE389403A
BE389403A BE389403DA BE389403A BE 389403 A BE389403 A BE 389403A BE 389403D A BE389403D A BE 389403DA BE 389403 A BE389403 A BE 389403A
Authority
BE
Belgium
Prior art keywords
nut
passage
advancement
oil
perforator
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE389403A publication Critical patent/BE389403A/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
    • E21B6/06Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device

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)
BE389403D BE389403A (de)

Publications (1)

Publication Number Publication Date
BE389403A true BE389403A (de)

Family

ID=57523

Family Applications (1)

Application Number Title Priority Date Filing Date
BE389403D BE389403A (de)

Country Status (1)

Country Link
BE (1) BE389403A (de)

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