NL4987C - - Google Patents

Info

Publication number
NL4987C
NL4987C NL4987DA NL4987C NL 4987 C NL4987 C NL 4987C NL 4987D A NL4987D A NL 4987DA NL 4987 C NL4987 C NL 4987C
Authority
NL
Netherlands
Application number
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.)
Publication date
Application granted granted Critical
Publication of NL4987C publication Critical patent/NL4987C/xx

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
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

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)
  • Bulkheads Adapted To Foundation Construction (AREA)
NL4987D 1917-12-28 NL4987C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE332712T 1917-12-28

Publications (1)

Publication Number Publication Date
NL4987C true NL4987C (enrdf_load_stackoverflow) 1917-06-04

Family

ID=6205070

Family Applications (1)

Application Number Title Priority Date Filing Date
NL4987D NL4987C (enrdf_load_stackoverflow) 1917-12-28

Country Status (5)

Country Link
US (1) US1588154A (enrdf_load_stackoverflow)
DE (2) DE332712C (enrdf_load_stackoverflow)
FR (1) FR550358A (enrdf_load_stackoverflow)
GB (2) GB148984A (enrdf_load_stackoverflow)
NL (1) NL4987C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3527295A (en) * 1968-11-12 1970-09-08 William O Gangl Tool article and method of use
DE29701622U1 (de) * 1997-01-31 1998-06-04 Krupp Fördertechnik GmbH, 45143 Essen Prallwerk

Also Published As

Publication number Publication date
GB148421A (en) 1921-11-10
FR550358A (fr) 1923-03-05
DE332712C (de) 1921-02-09
DE303841C (enrdf_load_stackoverflow) 1919-07-12
US1588154A (en) 1926-06-08
GB148984A (en) 1921-11-10

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