NL7402876A - - Google Patents

Info

Publication number
NL7402876A
NL7402876A NL7402876A NL7402876A NL7402876A NL 7402876 A NL7402876 A NL 7402876A NL 7402876 A NL7402876 A NL 7402876A NL 7402876 A NL7402876 A NL 7402876A NL 7402876 A NL7402876 A NL 7402876A
Authority
NL
Netherlands
Application number
NL7402876A
Other versions
NL177241C (nl
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
Priority claimed from GB1053073A external-priority patent/GB1469524A/en
Application filed filed Critical
Publication of NL7402876A publication Critical patent/NL7402876A/xx
Application granted granted Critical
Publication of NL177241C publication Critical patent/NL177241C/xx

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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • 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
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Sheet Holders (AREA)
  • Fertilizing (AREA)
NLAANVRAGE7402876,A 1973-03-05 1974-03-04 Beitel voor roterend boren. NL177241C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1053073A GB1469524A (en) 1973-03-05 1973-03-05 Rotary bit for hydraulically drilling holes into underground formations
GB5143273 1973-11-06

Publications (2)

Publication Number Publication Date
NL7402876A true NL7402876A (de) 1974-09-09
NL177241C NL177241C (nl) 1985-08-16

Family

ID=26247583

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7402876,A NL177241C (nl) 1973-03-05 1974-03-04 Beitel voor roterend boren.

Country Status (6)

Country Link
JP (1) JPS5743717B2 (de)
CA (1) CA997749A (de)
DE (1) DE2410236C3 (de)
FR (1) FR2220662A1 (de)
NL (1) NL177241C (de)
NO (1) NO143391C (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098363A (en) * 1977-04-25 1978-07-04 Christensen, Inc. Diamond drilling bit for soft and medium hard formations
JP2012127062A (ja) * 2010-12-13 2012-07-05 Mitsubishi Materials Corp 掘削ビット

Also Published As

Publication number Publication date
DE2410236C3 (de) 1980-10-23
FR2220662B1 (de) 1982-06-04
DE2410236B2 (de) 1980-03-06
DE2410236A1 (de) 1974-09-12
NL177241C (nl) 1985-08-16
NO740735L (no) 1974-09-06
JPS5743717B2 (de) 1982-09-16
NO143391B (no) 1980-10-20
NO143391C (no) 1981-01-28
FR2220662A1 (en) 1974-10-04
CA997749A (en) 1976-09-28
JPS49118601A (de) 1974-11-13

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BATV A request for search has been withdrawn
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01