DE226622C - - Google Patents

Info

Publication number
DE226622C
DE226622C DENDAT226622D DE226622DA DE226622C DE 226622 C DE226622 C DE 226622C DE NDAT226622 D DENDAT226622 D DE NDAT226622D DE 226622D A DE226622D A DE 226622DA DE 226622 C DE226622 C DE 226622C
Authority
DE
Germany
Prior art keywords
rod
dross
borehole
plates
sleeve
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
DENDAT226622D
Other languages
German (de)
English (en)
Publication of DE226622C publication Critical patent/DE226622C/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means

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)
  • Earth Drilling (AREA)
DENDAT226622D Active DE226622C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE226622C true DE226622C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=487161

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT226622D Active DE226622C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE226622C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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