ATA37088A - Bohrkrone - Google Patents

Bohrkrone

Info

Publication number
ATA37088A
ATA37088A AT0037088A AT37088A ATA37088A AT A37088 A ATA37088 A AT A37088A AT 0037088 A AT0037088 A AT 0037088A AT 37088 A AT37088 A AT 37088A AT A37088 A ATA37088 A AT A37088A
Authority
AT
Austria
Prior art keywords
drill bit
drill
bit
Prior art date
Application number
AT0037088A
Other languages
English (en)
Other versions
AT389563B (de
Inventor
Christian Sulzer
Original Assignee
Sulzer Josef
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 Sulzer Josef filed Critical Sulzer Josef
Priority to AT0037088A priority Critical patent/AT389563B/de
Publication of ATA37088A publication Critical patent/ATA37088A/de
Application granted granted Critical
Publication of AT389563B publication Critical patent/AT389563B/de

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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • 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
    • E21B10/32—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
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion

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)
  • Earth Drilling (AREA)
AT0037088A 1988-02-17 1988-02-17 Bohrkrone AT389563B (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT0037088A AT389563B (de) 1988-02-17 1988-02-17 Bohrkrone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0037088A AT389563B (de) 1988-02-17 1988-02-17 Bohrkrone

Publications (2)

Publication Number Publication Date
ATA37088A true ATA37088A (de) 1989-05-15
AT389563B AT389563B (de) 1989-12-27

Family

ID=3488795

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0037088A AT389563B (de) 1988-02-17 1988-02-17 Bohrkrone

Country Status (1)

Country Link
AT (1) AT389563B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962822A (en) * 1989-12-15 1990-10-16 Numa Tool Company Downhole drill bit and bit coupling
SE530904C2 (sv) * 2005-09-05 2008-10-14 Sandvik Intellectual Property Bergborrkrona för enstegsankarbultning och enstegsborrande apparatur
SE530905C2 (sv) * 2005-09-05 2008-10-14 Sandvik Intellectual Property Bergborrkrona för enstegsankarbultning och enstegsborrande apparatur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446935A (en) * 1979-03-28 1984-05-08 Reed Tool Company (Delaware) Intermittent high-drag oil well drilling bit

Also Published As

Publication number Publication date
AT389563B (de) 1989-12-27

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties
ELJ Ceased due to non-payment of the annual fee