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DD207396A3 - - Google Patents

Info

Publication number
DD207396A3
DD207396A3 DD23327281A DD23327281A DD207396A3 DD 207396 A3 DD207396 A3 DD 207396A3 DD 23327281 A DD23327281 A DD 23327281A DD 23327281 A DD23327281 A DD 23327281A DD 207396 A3 DD207396 A3 DD 207396A3
Authority
DD
German Democratic Republic
Application number
DD23327281A
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 DD23327281A priority Critical patent/DD207396A3/xx
Publication of DD207396A3 publication Critical patent/DD207396A3/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
    • E21B17/02—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

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)
DD23327281A 1981-09-14 1981-09-14 DD207396A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD23327281A DD207396A3 (fr) 1981-09-14 1981-09-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD23327281A DD207396A3 (fr) 1981-09-14 1981-09-14

Publications (1)

Publication Number Publication Date
DD207396A3 true DD207396A3 (fr) 1984-02-29

Family

ID=5533497

Family Applications (1)

Application Number Title Priority Date Filing Date
DD23327281A DD207396A3 (fr) 1981-09-14 1981-09-14

Country Status (1)

Country Link
DD (1) DD207396A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235581A1 (fr) * 1986-02-05 1987-09-09 Geissler & Kuper GmbH Diamantwerkzeug-Wiederaufbereitung Couplement, notamment pour une couronne de sondage diamantée avec fût de conduit et raccord de filet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235581A1 (fr) * 1986-02-05 1987-09-09 Geissler & Kuper GmbH Diamantwerkzeug-Wiederaufbereitung Couplement, notamment pour une couronne de sondage diamantée avec fût de conduit et raccord de filet

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Legal Events

Date Code Title Description
ENJ Ceased due to non-payment of renewal fee