TY JOUR TI REGULATION OF THE ROTATION FREQUENCY OF THE ELECTRIC DRIVE OF THE BIT IN ROTARY DRILLING OF WELLS FOR OIL AND GAS PRODUCTIONS KW drilling rig KW bit rotation frequency KW drill table rotor drive KW permissible loads on the bit KW power and torque of the drive electric motor JO Bulletin of the Angarsk State Technical University AU Arsent'ev, O.V. AU Shitenkov, G.A. AU Smyshlyaev, V.V. AU Brateiko, A.S. AU Korpan, V.Y. PY 2025 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»