FR727479A - Drill pipes made from special composition steel - Google Patents

Drill pipes made from special composition steel

Info

Publication number
FR727479A
FR727479A FR727479DA FR727479A FR 727479 A FR727479 A FR 727479A FR 727479D A FR727479D A FR 727479DA FR 727479 A FR727479 A FR 727479A
Authority
FR
France
Prior art keywords
drill pipes
pipes made
special composition
composition steel
steel
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.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vereinigte Stahlwerke AG
Original Assignee
Vereinigte Stahlwerke AG
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 Vereinigte Stahlwerke AG filed Critical Vereinigte Stahlwerke AG
Application granted granted Critical
Publication of FR727479A publication Critical patent/FR727479A/en
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

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)
FR727479D 1930-10-07 1931-10-05 Drill pipes made from special composition steel Expired FR727479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE727479X 1930-10-07

Publications (1)

Publication Number Publication Date
FR727479A true FR727479A (en) 1932-06-18

Family

ID=6635470

Family Applications (1)

Application Number Title Priority Date Filing Date
FR727479D Expired FR727479A (en) 1930-10-07 1931-10-05 Drill pipes made from special composition steel

Country Status (1)

Country Link
FR (1) FR727479A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2107804A1 (en) * 1970-09-18 1972-05-12 Vallourec

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2107804A1 (en) * 1970-09-18 1972-05-12 Vallourec

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