DE118802C - - Google Patents

Info

Publication number
DE118802C
DE118802C DENDAT118802D DE118802DA DE118802C DE 118802 C DE118802 C DE 118802C DE NDAT118802 D DENDAT118802 D DE NDAT118802D DE 118802D A DE118802D A DE 118802DA DE 118802 C DE118802 C DE 118802C
Authority
DE
Germany
Prior art keywords
drill
drill bit
eccentric
pipes
bits
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
DENDAT118802D
Other languages
German (de)
English (en)
Publication of DE118802C publication Critical patent/DE118802C/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
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable

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)
  • Drilling Tools (AREA)
DENDAT118802D Active DE118802C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE118802C true DE118802C (enrdf_load_html_response)

Family

ID=387972

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT118802D Active DE118802C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE118802C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321974A (en) * 1978-12-16 1982-03-30 Hydroc Gesteinsbohrtechnik Gmbh Annular drilling hammer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321974A (en) * 1978-12-16 1982-03-30 Hydroc Gesteinsbohrtechnik Gmbh Annular drilling hammer

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