SE7806047L - Borrverktyg - Google Patents

Borrverktyg

Info

Publication number
SE7806047L
SE7806047L SE7806047A SE7806047A SE7806047L SE 7806047 L SE7806047 L SE 7806047L SE 7806047 A SE7806047 A SE 7806047A SE 7806047 A SE7806047 A SE 7806047A SE 7806047 L SE7806047 L SE 7806047L
Authority
SE
Sweden
Prior art keywords
drilling tools
drilling
tools
Prior art date
Application number
SE7806047A
Other languages
English (en)
Other versions
SE437281B (sv
Inventor
Heinrich B Schefers
Original Assignee
Heinrich B Schefers
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 Heinrich B Schefers filed Critical Heinrich B Schefers
Publication of SE7806047L publication Critical patent/SE7806047L/sv
Publication of SE437281B publication Critical patent/SE437281B/sv

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
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/325—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being shifted by a spring mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B23B51/0045—Drills for enlarging a hole by expanding or tilting the toolhead
SE7806047A 1977-05-26 1978-05-26 Borrvertyg for borrhal som utvidgar sig i borrningsriktningen SE437281B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2723785A DE2723785C3 (de) 1977-05-26 1977-05-26 Bohrwerkzeug

Publications (2)

Publication Number Publication Date
SE7806047L true SE7806047L (sv) 1978-11-27
SE437281B SE437281B (sv) 1985-02-18

Family

ID=6009935

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7806047A SE437281B (sv) 1977-05-26 1978-05-26 Borrvertyg for borrhal som utvidgar sig i borrningsriktningen

Country Status (3)

Country Link
CH (1) CH632311A5 (sv)
DE (1) DE2723785C3 (sv)
SE (1) SE437281B (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7820164U1 (de) * 1978-07-05 1978-10-12 Boehm, Edgar, 2800 Bremen Bohrwerkzeug zur herstellung einer konisch hinterschnittenen bohrung
DE2928555A1 (de) * 1979-07-14 1981-01-29 Stumpp & Kurz Bohrwerkzeug
DE3823891A1 (de) * 1988-07-14 1990-01-18 Westa Werkzeugbau Bohrvorrichtung
DE3835025A1 (de) * 1988-10-14 1990-04-19 Fischer Artur Werke Gmbh Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
US7036611B2 (en) 2002-07-30 2006-05-02 Baker Hughes Incorporated Expandable reamer apparatus for enlarging boreholes while drilling and methods of use
GB0902253D0 (en) * 2009-02-12 2009-03-25 Stable Services Ltd Downhole tool
US9493991B2 (en) 2012-04-02 2016-11-15 Baker Hughes Incorporated Cutting structures, tools for use in subterranean boreholes including cutting structures and related methods

Also Published As

Publication number Publication date
CH632311A5 (en) 1982-09-30
DE2723785C3 (de) 1980-01-17
DE2723785B2 (de) 1979-05-23
SE437281B (sv) 1985-02-18
DE2723785A1 (de) 1978-11-30

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