DE2216938A1 - - Google Patents

Info

Publication number
DE2216938A1
DE2216938A1 DE19722216938 DE2216938A DE2216938A1 DE 2216938 A1 DE2216938 A1 DE 2216938A1 DE 19722216938 DE19722216938 DE 19722216938 DE 2216938 A DE2216938 A DE 2216938A DE 2216938 A1 DE2216938 A1 DE 2216938A1
Authority
DE
Germany
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.)
Granted
Application number
DE19722216938
Other languages
German (de)
Other versions
DE2216938B1 (de
DE2216938C2 (de
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 filed Critical
Priority to DE2216938A priority Critical patent/DE2216938C2/de
Publication of DE2216938A1 publication Critical patent/DE2216938A1/de
Publication of DE2216938B1 publication Critical patent/DE2216938B1/de
Application granted granted Critical
Publication of DE2216938C2 publication Critical patent/DE2216938C2/de
Expired 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
    • 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
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E21B36/003—Insulating arrangements

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)
  • Thermal Insulation (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
DE2216938A 1972-04-08 1972-04-08 Vorrichtung zur Zentrierung eines Rohrstranges Expired DE2216938C2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2216938A DE2216938C2 (de) 1972-04-08 1972-04-08 Vorrichtung zur Zentrierung eines Rohrstranges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2216938A DE2216938C2 (de) 1972-04-08 1972-04-08 Vorrichtung zur Zentrierung eines Rohrstranges

Publications (3)

Publication Number Publication Date
DE2216938A1 true DE2216938A1 (xx) 1973-03-08
DE2216938B1 DE2216938B1 (de) 1973-03-08
DE2216938C2 DE2216938C2 (de) 1973-09-27

Family

ID=5841346

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2216938A Expired DE2216938C2 (de) 1972-04-08 1972-04-08 Vorrichtung zur Zentrierung eines Rohrstranges

Country Status (1)

Country Link
DE (1) DE2216938C2 (xx)

Also Published As

Publication number Publication date
DE2216938B1 (de) 1973-03-08
DE2216938C2 (de) 1973-09-27

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Legal Events

Date Code Title Description
B1 Publication of the examined application without previous publication of unexamined application
C2 Grant after previous publication (2nd publication)