DE262598C - - Google Patents

Info

Publication number
DE262598C
DE262598C DENDAT262598D DE262598DA DE262598C DE 262598 C DE262598 C DE 262598C DE NDAT262598 D DENDAT262598 D DE NDAT262598D DE 262598D A DE262598D A DE 262598DA DE 262598 C DE262598 C DE 262598C
Authority
DE
Germany
Prior art keywords
drill
pin
shaft
cutting edge
gesture
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
DENDAT262598D
Other languages
German (de)
English (en)
Publication of DE262598C publication Critical patent/DE262598C/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
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B17/22—Rods or pipes with helical structure

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)
DENDAT262598D Active DE262598C (fi)

Publications (1)

Publication Number Publication Date
DE262598C true DE262598C (fi)

Family

ID=520049

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT262598D Active DE262598C (fi)

Country Status (1)

Country Link
DE (1) DE262598C (fi)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548688A (en) * 1968-01-04 1970-12-22 Hawera Probst Kg Hartmetall Drill
DE4003374C1 (fi) * 1990-02-05 1991-05-08 Sfs Stadler Holding Ag, Heerbrugg, Ch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548688A (en) * 1968-01-04 1970-12-22 Hawera Probst Kg Hartmetall Drill
DE4003374C1 (fi) * 1990-02-05 1991-05-08 Sfs Stadler Holding Ag, Heerbrugg, Ch

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