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GB2108554B - Improvements in drag bits - Google Patents

Improvements in drag bits

Info

Publication number
GB2108554B
GB2108554B GB08229692A GB8229692A GB2108554B GB 2108554 B GB2108554 B GB 2108554B GB 08229692 A GB08229692 A GB 08229692A GB 8229692 A GB8229692 A GB 8229692A GB 2108554 B GB2108554 B GB 2108554B
Authority
GB
United Kingdom
Prior art keywords
drag bits
drag
bits
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
Application number
GB08229692A
Other versions
GB2108554A (en
Inventor
Harry Norris Ball
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.)
Smith International Inc
Original Assignee
Smith International Inc
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 Smith International Inc filed Critical Smith International Inc
Publication of GB2108554A publication Critical patent/GB2108554A/en
Application granted granted Critical
Publication of GB2108554B publication Critical patent/GB2108554B/en
Expired 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
GB08229692A 1981-10-29 1982-10-18 Improvements in drag bits Expired GB2108554B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31617881A 1981-10-29 1981-10-29

Publications (2)

Publication Number Publication Date
GB2108554A GB2108554A (en) 1983-05-18
GB2108554B true GB2108554B (en) 1985-07-10

Family

ID=23227860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08229692A Expired GB2108554B (en) 1981-10-29 1982-10-18 Improvements in drag bits

Country Status (3)

Country Link
DE (1) DE3239757A1 (en)
GB (1) GB2108554B (en)
NL (1) NL8203750A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148353B (en) * 1983-09-15 1986-03-05 Boart Int Ltd Mining picks

Also Published As

Publication number Publication date
GB2108554A (en) 1983-05-18
NL8203750A (en) 1983-05-16
DE3239757A1 (en) 1983-06-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee