Over the past 10-15 years, global oil and gas drilling practice has seen an increase in the construction of directional wells, including those with significant bottom-hole waste in the horizontal plane

Modern cone drilling machines for drilling wells from the surface are capable of drilling vertical or inclined wells up to 320 mm in diameter and up to 30 m deep. In the underground development of deposits are used wells drilled at any angle to the horizon, and machines for their drilling provide penetration of wells with a diameter of up to 105 mm and a length of no more than 100 m.