FR1213270A - Outil de forage - Google Patents

Outil de forage

Info

Publication number
FR1213270A
FR1213270A FR1213270DA FR1213270A FR 1213270 A FR1213270 A FR 1213270A FR 1213270D A FR1213270D A FR 1213270DA FR 1213270 A FR1213270 A FR 1213270A
Authority
FR
France
Prior art keywords
drilling tool
drilling
tool
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)
Inventor
Robert-Halim El Attar
Arnold Schroter
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
Application granted granted Critical
Publication of FR1213270A publication Critical patent/FR1213270A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
FR1213270D 1959-01-12 1959-01-12 Outil de forage Expired FR1213270A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1213270T 1959-01-12

Publications (1)

Publication Number Publication Date
FR1213270A true FR1213270A (fr) 1960-03-30

Family

ID=9676465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1213270D Expired FR1213270A (fr) 1959-01-12 1959-01-12 Outil de forage

Country Status (1)

Country Link
FR (1) FR1213270A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736711A1 (de) * 1976-08-23 1978-03-02 Skf Ind Trading & Dev Bohrkrone zum gesteinsbohren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736711A1 (de) * 1976-08-23 1978-03-02 Skf Ind Trading & Dev Bohrkrone zum gesteinsbohren

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