DE3143906C2 - - Google Patents

Info

Publication number
DE3143906C2
DE3143906C2 DE3143906A DE3143906A DE3143906C2 DE 3143906 C2 DE3143906 C2 DE 3143906C2 DE 3143906 A DE3143906 A DE 3143906A DE 3143906 A DE3143906 A DE 3143906A DE 3143906 C2 DE3143906 C2 DE 3143906C2
Authority
DE
Germany
Prior art keywords
cutting
disc
cutting edges
cutting disc
passage openings
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 - Lifetime
Application number
DE3143906A
Other languages
German (de)
English (en)
Other versions
DE3143906A1 (de
Inventor
Herbert 4712 Werne De Heitkamp
Eberhart Unger
Klaus 4670 Luenen De Linde
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.)
Caterpillar Global Mining Europe GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia 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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Priority to DE19813143906 priority Critical patent/DE3143906A1/de
Publication of DE3143906A1 publication Critical patent/DE3143906A1/de
Application granted granted Critical
Publication of DE3143906C2 publication Critical patent/DE3143906C2/de
Granted 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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/205—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal
    • E21B7/206—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal using down-hole drives
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B12/00—Accessories for drilling tools
    • E21B12/06—Mechanical cleaning devices
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/20—Drives for drilling, used in the borehole combined with surface drive

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)
DE19813143906 1981-11-05 1981-11-05 Vorrichtung zum vorpressen kleiner nicht begehbarer rohre Granted DE3143906A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813143906 DE3143906A1 (de) 1981-11-05 1981-11-05 Vorrichtung zum vorpressen kleiner nicht begehbarer rohre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813143906 DE3143906A1 (de) 1981-11-05 1981-11-05 Vorrichtung zum vorpressen kleiner nicht begehbarer rohre

Publications (2)

Publication Number Publication Date
DE3143906A1 DE3143906A1 (de) 1983-05-11
DE3143906C2 true DE3143906C2 (enrdf_load_stackoverflow) 1990-05-31

Family

ID=6145665

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813143906 Granted DE3143906A1 (de) 1981-11-05 1981-11-05 Vorrichtung zum vorpressen kleiner nicht begehbarer rohre

Country Status (1)

Country Link
DE (1) DE3143906A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233010B (en) * 1989-06-20 1993-04-28 Daiho Construction Co Ltd Underground excavator

Also Published As

Publication number Publication date
DE3143906A1 (de) 1983-05-11

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: GEWERKSCHAFT EISENHUETTE WESTFALIA GMBH, 4670 LUEN

8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: WESTFALIA BECORIT INDUSTRIETECHNIK GMBH, 4670 LUEN

8339 Ceased/non-payment of the annual fee