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

FIELD: technological processes.

SUBSTANCE: invention relates to the drilling of large size wells, namely to the roller bit reactive turbodrilling. The bit for reactive turbodrilling comprises a body with legs on journals of which the rolling cutter are mounted with main and peripheral teeth rows shifted relative thereto towards the trunnion axis, these peripheral teeth rows are reinforced with hard-alloy teeth with wedge-shaped working head, the side surfaces of which are parallel to the gauge surface of the cone and the cone of its main teeth row. Each cone bit is a conical structure, the lower generatrix of which is perpendicular to the unit rotation axis, each rolling cutter drill bit is implemented with top teeth row having the same cone angle with the main teeth rows and the same with them height of projection of hard-alloy teeth set at sharp angle to the bit rotation axis.

EFFECT: increase of ROP and ROD.

5 cl, 6 dwg