DD139364A1 - Sicherheits-zentrierkorb zur verwendung bei der verrohrung von bohrungen im bergbau,bei oelfeldern o.ae. - Google Patents

Sicherheits-zentrierkorb zur verwendung bei der verrohrung von bohrungen im bergbau,bei oelfeldern o.ae.

Info

Publication number
DD139364A1
DD139364A1 DD78207999A DD20799978A DD139364A1 DD 139364 A1 DD139364 A1 DD 139364A1 DD 78207999 A DD78207999 A DD 78207999A DD 20799978 A DD20799978 A DD 20799978A DD 139364 A1 DD139364 A1 DD 139364A1
Authority
DD
German Democratic Republic
Prior art keywords
oelfeldern
hills
mining
piping
centering basket
Prior art date
Application number
DD78207999A
Other languages
German (de)
English (en)
Inventor
Guenter Kreft
Original Assignee
Guenter Kreft
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 Guenter Kreft filed Critical Guenter Kreft
Publication of DD139364A1 publication Critical patent/DD139364A1/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
    • E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
    • E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
    • E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations

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)
  • Earth Drilling (AREA)
  • Springs (AREA)
DD78207999A 1977-09-24 1978-09-21 Sicherheits-zentrierkorb zur verwendung bei der verrohrung von bohrungen im bergbau,bei oelfeldern o.ae. DD139364A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772743128 DE2743128A1 (de) 1977-09-24 1977-09-24 Sicherheits-zentrierkorb zur verwendung bei der verrohrung von bohrungen im bergbau, bei oelfeldern o.ae.

Publications (1)

Publication Number Publication Date
DD139364A1 true DD139364A1 (de) 1979-12-27

Family

ID=6019844

Family Applications (1)

Application Number Title Priority Date Filing Date
DD78207999A DD139364A1 (de) 1977-09-24 1978-09-21 Sicherheits-zentrierkorb zur verwendung bei der verrohrung von bohrungen im bergbau,bei oelfeldern o.ae.

Country Status (6)

Country Link
BE (1) BE870694A (fr)
DD (1) DD139364A1 (fr)
DE (1) DE2743128A1 (fr)
FR (1) FR2404095A1 (fr)
IT (1) IT1093568B (fr)
NL (1) NL7809648A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111963077B (zh) * 2020-08-05 2025-11-21 山东正元建设工程有限责任公司 一种钻杆导正装置

Also Published As

Publication number Publication date
DE2743128A1 (de) 1979-03-29
IT7821979A0 (it) 1978-04-04
NL7809648A (nl) 1979-03-27
IT1093568B (it) 1985-07-19
FR2404095A1 (fr) 1979-04-20
BE870694A (fr) 1979-01-15

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