TURBODRILL Russian patent published in 2018 - IPC E21B4/02 E21B28/00 

FIELD: drilling soil or rock.

SUBSTANCE: invention relates to technical means for drilling and repairing oil and gas wells, namely to turbodrills for driving a rock cutting tool. Turbodrill comprises a vertical row of turbine sections, in which housings stator turbines and rotor turbines installed on a profiled hollow shaft are located, a spindle section, in the housing of which there is a kinematically connected to the shaft of the turbine sections hollow shaft, on which a drillbit is fixed. Device is equipped with a pressure oscillator installed above the upper turbine section, in the walls of the housing of which through channels-waveguides are made, inside the housing on a hollow shaft a rotor with holes is installed, and in the housing there is a stator with holes, herewith the profiled shaft of the turbine section is kinematically connected to the oscillator shaft for rotation and longitudinal displacement of the rotor along it, with the possibility of periodical aligning the holes in the rotor and in the stator of the oscillator and the hydraulic connection of the internal cavity of the oscillator with the through channels-waveguides in the oscillator housing.

EFFECT: improved reliability of the device and the efficiency of the drilling process are provided.

1 cl, 3 dwg