Analysis of drill bit speed in bit-rock interaction with the use of numerical simulation methods

Tashkent State Technical University, Department of Mining Electromechanics, 2 University St., 100095 Tashkent, Republic Uzbekistan

^* Corresponding author: ltoshniyozov@tdtu.uz

Abstract

Bit-rock interaction while drilling wells using numerical simulation methods is analyzed in the article. The effect of the location of the buttons relative to the destruction of the rock, the influence of the structure on the total speed of the drill bit was considered. The total bit velocity was investigated by comparing the results of modeling the operation of the industry bit and the optimized bit. Using methods of numerical modeling allowed creating an atmosphere of the drilling process in a computer environment, where the destruction of rock using a rock cutting tool was analyzed. Due to the pairwise positioning of the buttons in the optimized bit modeled in the ANSYS program, the number of buttons decreased by 13 pieces and the performance of the bit increased significantly. The optimized bit demonstrates more intense penetration into the rock and obvious fragmentation on the rock surface. A drill bit with a pair of buttons rotates more intensively and acts on the cross-sectional area of the rock with values greater than a bit with button of a conventional location. Rising values of the total velocity on the graph signal the dynamic movements of the rock cutting tool.