ZA78291B - Improvements in or relating to drill bits - Google Patents

Improvements in or relating to drill bits

Info

Publication number
ZA78291B
ZA78291B ZA00780291A ZA78291A ZA78291B ZA 78291 B ZA78291 B ZA 78291B ZA 00780291 A ZA00780291 A ZA 00780291A ZA 78291 A ZA78291 A ZA 78291A ZA 78291 B ZA78291 B ZA 78291B
Authority
ZA
South Africa
Prior art keywords
relating
drill bits
drill
bits
Prior art date
Application number
ZA00780291A
Inventor
T Keen
Original Assignee
T Keen
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 T Keen filed Critical T Keen
Publication of ZA78291B publication Critical patent/ZA78291B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
ZA00780291A 1977-02-10 1978-01-17 Improvements in or relating to drill bits ZA78291B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB554477 1977-02-10

Publications (1)

Publication Number Publication Date
ZA78291B true ZA78291B (en) 1978-12-27

Family

ID=9798162

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00780291A ZA78291B (en) 1977-02-10 1978-01-17 Improvements in or relating to drill bits

Country Status (3)

Country Link
DE (1) DE2803735A1 (en)
FR (1) FR2380412A1 (en)
ZA (1) ZA78291B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE48798B1 (en) * 1978-08-18 1985-05-15 De Beers Ind Diamond Method of making tool inserts,wire-drawing die blank and drill bit comprising such inserts

Also Published As

Publication number Publication date
DE2803735A1 (en) 1978-08-17
FR2380412A1 (en) 1978-09-08

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