DE145349C - - Google Patents

Info

Publication number
DE145349C
DE145349C DENDAT145349D DE145349DA DE145349C DE 145349 C DE145349 C DE 145349C DE NDAT145349 D DENDAT145349 D DE NDAT145349D DE 145349D A DE145349D A DE 145349DA DE 145349 C DE145349 C DE 145349C
Authority
DE
Germany
Prior art keywords
drill
spring
springs
rod
collar
Prior art date
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.)
Active
Application number
DENDAT145349D
Other languages
German (de)
English (en)
Publication of DE145349C publication Critical patent/DE145349C/de
Active 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
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers

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)
DENDAT145349D Active DE145349C ( )

Publications (1)

Publication Number Publication Date
DE145349C true DE145349C ( )

Family

ID=412701

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT145349D Active DE145349C ( )

Country Status (1)

Country Link
DE (1) DE145349C ( )

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2360741A1 (fr) * 1976-08-02 1978-03-03 Dresser Ind Dispositif de reglage du ressort d'un outil de forage
DE2906247A1 (de) * 1978-02-21 1979-08-30 Christensen Inc Stossdaempfer fuer tiefbohrgestaenge
EP0173922A1 (en) * 1984-09-06 1986-03-12 Secoroc AB Joint device in extension drill equipment for percussive drilling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2360741A1 (fr) * 1976-08-02 1978-03-03 Dresser Ind Dispositif de reglage du ressort d'un outil de forage
DE2906247A1 (de) * 1978-02-21 1979-08-30 Christensen Inc Stossdaempfer fuer tiefbohrgestaenge
EP0173922A1 (en) * 1984-09-06 1986-03-12 Secoroc AB Joint device in extension drill equipment for percussive drilling

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