ZM2975A1 - Improvements in or relating to drill bits - Google Patents

Improvements in or relating to drill bits

Info

Publication number
ZM2975A1
ZM2975A1 ZM29/75A ZM2975A ZM2975A1 ZM 2975 A1 ZM2975 A1 ZM 2975A1 ZM 29/75 A ZM29/75 A ZM 29/75A ZM 2975 A ZM2975 A ZM 2975A ZM 2975 A1 ZM2975 A1 ZM 2975A1
Authority
ZM
Zambia
Prior art keywords
relating
drill bits
drill
bits
Prior art date
Application number
ZM29/75A
Other languages
English (en)
Original Assignee
Padley & Venables Ltd
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 Padley & Venables Ltd filed Critical Padley & Venables Ltd
Publication of ZM2975A1 publication Critical patent/ZM2975A1/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
    • E21B10/58—Chisel-type 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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion 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)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
ZM29/75A 1974-03-21 1975-03-04 Improvements in or relating to drill bits ZM2975A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1260074A GB1466700A (en) 1974-03-21 1974-03-21 Drill bits

Publications (1)

Publication Number Publication Date
ZM2975A1 true ZM2975A1 (en) 1976-01-21

Family

ID=10007637

Family Applications (1)

Application Number Title Priority Date Filing Date
ZM29/75A ZM2975A1 (en) 1974-03-21 1975-03-04 Improvements in or relating to drill bits

Country Status (15)

Country Link
JP (1) JPS50129403A (xx)
AT (1) ATA213575A (xx)
AU (1) AU7923075A (xx)
BE (1) BE826797A (xx)
CA (1) CA1029366A (xx)
DE (1) DE2512652A1 (xx)
ES (1) ES435899A1 (xx)
FI (1) FI750837A (xx)
FR (1) FR2264961B3 (xx)
GB (1) GB1466700A (xx)
IE (1) IE40686B1 (xx)
NL (1) NL7502813A (xx)
SE (1) SE7502904L (xx)
ZA (1) ZA751175B (xx)
ZM (1) ZM2975A1 (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT376765B (de) * 1978-05-16 1984-12-27 Guergen Karlheinz Auswechselbare bohrkrone fuer einen bei allen gesteinsarten anwendbaren gesteindrehschlagbohrer und bohrhammer
US5996714A (en) * 1997-07-15 1999-12-07 Kennametal Inc. Rotatable cutting bit assembly with wedge-lock retention assembly
DE19844820A1 (de) * 1998-09-30 2000-04-13 Holzmann Philipp Ag Bohrspitze für ein Bohrrohr
CN110064739A (zh) * 2019-05-30 2019-07-30 广西玉柴机器股份有限公司 一种砂型钻头

Also Published As

Publication number Publication date
IE40686B1 (en) 1979-08-01
NL7502813A (nl) 1975-09-23
SE7502904L (xx) 1975-09-22
FR2264961B3 (xx) 1977-11-25
FR2264961A1 (xx) 1975-10-17
ES435899A1 (es) 1976-12-16
BE826797A (fr) 1975-07-16
IE40686L (en) 1975-09-21
CA1029366A (en) 1978-04-11
ZA751175B (en) 1976-01-28
JPS50129403A (xx) 1975-10-13
GB1466700A (en) 1977-03-09
DE2512652A1 (de) 1975-09-25
AU7923075A (en) 1976-09-23
ATA213575A (de) 1977-06-15
FI750837A (xx) 1975-09-22

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