NL59469C - - Google Patents

Info

Publication number
NL59469C
NL59469C NL59469DA NL59469C NL 59469 C NL59469 C NL 59469C NL 59469D A NL59469D A NL 59469DA NL 59469 C NL59469 C NL 59469C
Authority
NL
Netherlands
Application number
Publication of NL59469C publication Critical patent/NL59469C/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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/08—Wipers; Oil savers
    • E21B33/085—Rotatable packing means, e.g. rotating blow-out preventers

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)
NL59469D NL59469C (de)

Publications (1)

Publication Number Publication Date
NL59469C true NL59469C (de)

Family

ID=1815155

Family Applications (1)

Application Number Title Priority Date Filing Date
NL59469D NL59469C (de)

Country Status (1)

Country Link
NL (1) NL59469C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083973A (en) * 1960-05-16 1963-04-02 Cameron Iron Works Inc Drilling head
US4154448A (en) * 1977-10-18 1979-05-15 Biffle Morris S Rotating blowout preventor with rigid washpipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083973A (en) * 1960-05-16 1963-04-02 Cameron Iron Works Inc Drilling head
US4154448A (en) * 1977-10-18 1979-05-15 Biffle Morris S Rotating blowout preventor with rigid washpipe

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