Gang drill construction

Details Gang drill construction Gang drill construction

E - Fixed Constructions

21

B

255/68

E21B 4/16 (2006.01) E21B 10/38 (2006.01)

Patent

CA 1302392

GANG DRILL CONSTRUCTION ABSTRACT Disclosed is a new method of construction for multiple or gang down hole rock drills. A rigid mounting cylinder with alignment and securing means for the individual drills is provided. The cylinder further serves to attach the multiple drills to a single drill string which supplies air to the individual drills. The cylinder further facilitates rock chip removal by filling all but the peripheral annulus which forms the exit channel for exhaust air.

538370

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