FR1443119A - Trépan à molettes - Google Patents

Trépan à molettes

Info

Publication number
FR1443119A
FR1443119A FR4968A FR4968A FR1443119A FR 1443119 A FR1443119 A FR 1443119A FR 4968 A FR4968 A FR 4968A FR 4968 A FR4968 A FR 4968A FR 1443119 A FR1443119 A FR 1443119A
Authority
FR
France
Prior art keywords
roller bit
bit
roller
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
FR4968A
Other languages
English (en)
Inventor
Albrecht Grafer
Nuesse
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 FR4968A priority Critical patent/FR1443119A/fr
Application granted granted Critical
Publication of FR1443119A publication Critical patent/FR1443119A/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • 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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
FR4968A 1965-02-10 1965-02-10 Trépan à molettes Expired FR1443119A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR4968A FR1443119A (fr) 1965-02-10 1965-02-10 Trépan à molettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR4968A FR1443119A (fr) 1965-02-10 1965-02-10 Trépan à molettes

Publications (1)

Publication Number Publication Date
FR1443119A true FR1443119A (fr) 1966-06-24

Family

ID=1579134

Family Applications (1)

Application Number Title Priority Date Filing Date
FR4968A Expired FR1443119A (fr) 1965-02-10 1965-02-10 Trépan à molettes

Country Status (1)

Country Link
FR (1) FR1443119A (fr)

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