FR902592A - Mèche de mine, en particulier pour sondages rotatifs - Google Patents

Mèche de mine, en particulier pour sondages rotatifs

Info

Publication number
FR902592A
FR902592A FR902592DA FR902592A FR 902592 A FR902592 A FR 902592A FR 902592D A FR902592D A FR 902592DA FR 902592 A FR902592 A FR 902592A
Authority
FR
France
Prior art keywords
drill bit
rotary drilling
mine drill
mine
drilling
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
English (en)
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.)
FLOTTMANN AG
Original Assignee
FLOTTMANN 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 FLOTTMANN AG filed Critical FLOTTMANN AG
Application granted granted Critical
Publication of FR902592A publication Critical patent/FR902592A/fr
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
    • 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)
FR902592D 1943-03-09 1944-03-11 Mèche de mine, en particulier pour sondages rotatifs Expired FR902592A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE902592X 1943-03-09

Publications (1)

Publication Number Publication Date
FR902592A true FR902592A (fr) 1945-09-04

Family

ID=6861143

Family Applications (1)

Application Number Title Priority Date Filing Date
FR902592D Expired FR902592A (fr) 1943-03-09 1944-03-11 Mèche de mine, en particulier pour sondages rotatifs

Country Status (1)

Country Link
FR (1) FR902592A (fr)

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