FR1252535A - Roller widening foil, for drilling - Google Patents

Roller widening foil, for drilling

Info

Publication number
FR1252535A
FR1252535A FR823123A FR823123A FR1252535A FR 1252535 A FR1252535 A FR 1252535A FR 823123 A FR823123 A FR 823123A FR 823123 A FR823123 A FR 823123A FR 1252535 A FR1252535 A FR 1252535A
Authority
FR
France
Prior art keywords
widening
drilling
foil
roller
widening foil
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
FR823123A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Priority to FR823123A priority Critical patent/FR1252535A/en
Application granted granted Critical
Publication of FR1252535A publication Critical patent/FR1252535A/en
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
    • E21B10/26—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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
FR823123A 1960-04-01 1960-04-01 Roller widening foil, for drilling Expired FR1252535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR823123A FR1252535A (en) 1960-04-01 1960-04-01 Roller widening foil, for drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR823123A FR1252535A (en) 1960-04-01 1960-04-01 Roller widening foil, for drilling

Publications (1)

Publication Number Publication Date
FR1252535A true FR1252535A (en) 1961-01-27

Family

ID=8728431

Family Applications (1)

Application Number Title Priority Date Filing Date
FR823123A Expired FR1252535A (en) 1960-04-01 1960-04-01 Roller widening foil, for drilling

Country Status (1)

Country Link
FR (1) FR1252535A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204710A (en) * 1961-03-13 1965-09-07 J C Soding & Halbach Enlarging roller cutter
DE1224679B (en) * 1961-02-27 1966-09-15 Soeding & Halbach J C Extension roller chisel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1224679B (en) * 1961-02-27 1966-09-15 Soeding & Halbach J C Extension roller chisel
US3204710A (en) * 1961-03-13 1965-09-07 J C Soding & Halbach Enlarging roller cutter
DE1235237B (en) * 1961-03-13 1967-03-02 Soeding & Halbach J C Extension roller chisel

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