Drilling equipment

Details Drilling equipment Drilling equipment

B - Operations, Transporting

25

D

255/24

B25D 17/02 (2006.01) E21B 10/38 (2006.01) E21B 10/44 (2006.01) E21B 17/10 (2006.01) E21B 17/22 (2006.01)

Patent

CA 1328448

Abstract Title: Drilling equipment A drilling string for drilling long, straight holes in rock has a drill bit , an extension body screwed into the back of the drill bit and drill rod connectors which connect drill rod sections to one another. The bit is specifically for percussion or impact drilling and may be a button bit or a blade bit. The bit, the extension body and the connectors all have helically fluted cylindrical surfaces.

582819

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