DE234539C - - Google Patents

Info

Publication number
DE234539C
DE234539C DENDAT234539D DE234539DA DE234539C DE 234539 C DE234539 C DE 234539C DE NDAT234539 D DENDAT234539 D DE NDAT234539D DE 234539D A DE234539D A DE 234539DA DE 234539 C DE234539 C DE 234539C
Authority
DE
Germany
Prior art keywords
bit
springs
triggers
closes
highest
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.)
Active
Application number
DENDAT234539D
Other languages
German (de)
English (en)
Publication of DE234539C publication Critical patent/DE234539C/de
Active 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
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/22—Percussion drilling with a reciprocating impulse member driven by electromagnets
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/12—Electrically operated hammers
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Drilling And Boring (AREA)
DENDAT234539D Active DE234539C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE234539C true DE234539C (enrdf_load_stackoverflow)

Family

ID=494390

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT234539D Active DE234539C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE234539C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE833334C (de) * 1950-09-14 1952-03-06 Rautenkranz Int Hermann Einrichtung zum Herstellen von Grossbohrloechern, insbesondere fuer bergmaennische Zwecke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE833334C (de) * 1950-09-14 1952-03-06 Rautenkranz Int Hermann Einrichtung zum Herstellen von Grossbohrloechern, insbesondere fuer bergmaennische Zwecke

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