METHOD OF SLOPED HORIZONTAL BOREHOLE DRILLING PROCESS CONTROL Russian patent published in 2017 - IPC E21B44/00 E21B7/04 

FIELD: mining.

SUBSTANCE: method includes a borehole drilling with a drill string assembly consisting of drill pipes, chisel, downhole motor, sub, in which a downhole tool including a triaxial acceleration sensor is located and telemetry system transmitting information from a downhole tool via a wireless connection channel to the surface, while the acceleration sensor measures the acceleration of the device along three mutually orthogonal axes, the average rate of increased shock loads for each of the axes of the accelerometer axes and the total number of acceleration threshold exceedings during drilling, the obtained values are encoded and transmitted by the telemetry system to the surface, according to the obtained data, a decision on the need to change the drilling process modes is made. A hydraulic, ultrasonic or any other wireless communication channel is used as a wireless communication channel.

EFFECT: application of the method allows to obtain full information about the conditions of moving the drill string and chisel in the process of sloped horizontal boreholes drilling.

3 cl