SE377594B - - Google Patents

Info

Publication number
SE377594B
SE377594B SE158772A SE158772A SE377594B SE 377594 B SE377594 B SE 377594B SE 158772 A SE158772 A SE 158772A SE 158772 A SE158772 A SE 158772A SE 377594 B SE377594 B SE 377594B
Authority
SE
Sweden
Application number
SE158772A
Inventor
E S Adolfsson
H G B Nilsson
Original Assignee
Atlas Copco Ab
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.)
Filing date
Publication date
Application filed by Atlas Copco Ab filed Critical Atlas Copco Ab
Priority to SE158772A priority Critical patent/SE377594B/xx
Publication of SE377594B publication Critical patent/SE377594B/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
SE158772A 1972-02-10 1972-02-10 SE377594B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE158772A SE377594B (zh) 1972-02-10 1972-02-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE158772A SE377594B (zh) 1972-02-10 1972-02-10

Publications (1)

Publication Number Publication Date
SE377594B true SE377594B (zh) 1975-07-14

Family

ID=20258470

Family Applications (1)

Application Number Title Priority Date Filing Date
SE158772A SE377594B (zh) 1972-02-10 1972-02-10

Country Status (1)

Country Link
SE (1) SE377594B (zh)

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