A Method for Correction of Drilling Pressure and Torque Parameters in Small Boreholes

A parameter correction model is developed to address the problem of inaccurate measurement of follow-through parameters during drilling of small boreholes. First, the drilling pressure and torque parameter measurement model is established by the principle of drilling pressure and torque parameter measurement. Subsequently, the drilling pressure test rig and torque test rig are used to obtain the measurement data of drilling pressure and torque parameters. Finally, the measured data are fitted and corrected by least squares method, gradient descent method, and regularized linear regression method. Field experiments have confirmed that the data fitting method allows for the correction of drilling pressure and torque parameters in small boreholes with drilling.