Drill bit for well drilling

Details Drill bit for well drilling Drill bit for well drilling

E - Fixed Constructions

21

B

255/68

E21B 10/00 (2006.01) B22F 7/08 (2006.01) E21B 10/46 (2006.01) E21B 10/56 (2006.01) E21B 10/60 (2006.01)

Patent

CA 1150236

ABSTRACT Earth boring drill is formed of steel core with steel cutting element holders fastened in slots in the core; matrix bonding material on faces of steel cutting elements in turn hold diamond cutting tools; fluid passages are provided in core and steel cutting element holders.

351095

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