Determination of the Optimal Distribution of the Weight of Drill Pipe String Between Draw Works Velocities by Computer Aided Plotting of Electric Motor Temperature Curve.

The problem of determination of the load lifting capacity of a drilling draw works in different gears under the condition of full utilization of an electric motor is solved. When lifting tools by using three draw works gears, the greatest number of pipes is lifted in the fourth gear, as a result of which tool lifting time is shortened.