Reduced erosion nozzle system and method for the use of drill bi

Details Reduced erosion nozzle system and method for the use of drill bi Reduced erosion nozzle system and method for the use of drill bi

1998-04-02

2000-11-07

Lillis, Eileen D.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175 65, 175339, 175393, 175424, 239589, E21B 1000, E21B 1060

Patent

active

061422487

ABSTRACT:
Subterranean drill bits and particularly to nozzle features to be incorporated in subterranean bits. In one embodiment, the nozzle assembly of the invention defines a wear resistant structure which extends upstream from the terminus of the transition area. In another embodiment, nozzle assemblies are arranged about the transition area at low angles so as to minimize flow turbulence.

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