BORING BIT FOR REACTIVE TURBODRILLING Russian patent published in 2017 - IPC E21B10/16

Abstract RU 2611776 C1

FIELD: mining.

SUBSTANCE: bit for reactive turbodrilling includes the body, legs with inclined pins and cutters fixed on them with gauging, major and top teeth and flushing system. Each bit cutter is a single-cone structure, the lower generatic of which is perpendicular to the unit axis of rotation. End faces of gauging, major and top teeth are made of concave shape with the certain radius of curvature.

EFFECT: bit operating efficiency improvement.

3 dwg

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RU 2 611 776 C1

Authors

Dates

2017-03-01—Published

2016-01-27—Filed