FR707926A - Drilling device - Google Patents

Drilling device

Info

Publication number
FR707926A
FR707926A FR707926DA FR707926A FR 707926 A FR707926 A FR 707926A FR 707926D A FR707926D A FR 707926DA FR 707926 A FR707926 A FR 707926A
Authority
FR
France
Prior art keywords
drilling device
drilling
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)
Inventor
Wilhelm Zimmermann
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 filed Critical
Application granted granted Critical
Publication of FR707926A publication Critical patent/FR707926A/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
    • E21B1/00—Percussion drilling
    • E21B1/02—Surface drives for drop hammers or percussion drilling, e.g. with a cable
    • E21B1/04—Devices for reversing the movement of the rod or cable at the surface

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)
FR707926D 1929-12-18 1930-12-18 Drilling device Expired FR707926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE707926X 1929-12-18

Publications (1)

Publication Number Publication Date
FR707926A true FR707926A (en) 1931-07-16

Family

ID=6617505

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707926D Expired FR707926A (en) 1929-12-18 1930-12-18 Drilling device

Country Status (1)

Country Link
FR (1) FR707926A (en)

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