Rotary drilling bit

E - Fixed Constructions – 21 – B

Patent

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E21B 10/00 (2006.01) E21B 10/46 (2006.01) E21B 10/60 (2006.01)

Patent

CA 1086299

A full-hole rotary bit with scraping elements (such as diamonds) and waterways in the face thereof, has the scraping elements arranged along one side of each of the waterways, Ridges are arranged to guide the mud flow through the waterways.

306633

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