Investigation of the process of slurry formation at the well bottom hole

Cuttings formed at the bottom hole directly affect bit wear resistance and well penetration detrimentally. The ineffective removal of cuttings greatly decreases the speed of mechanical drilling and raises drilling energy consumption as a result of the need to re-drill cuttings. This article presents research on the movement of cutting particles in the borehole, mathematical modelling of tool wear that causes rock-destroying failure, and mathematical model of cutting particles movement in the bottom-hole zone of the borehole. Based on the established mathematical models, the logical value of the angle that directs the cutting particle towards the surface is calculated.