Drilling rig with lifting capability – with permissible hook load of 320 metric tons in block-module version with two-echelon block arrangement for cluster drilling with main mechanisms’ variable- frequency electric drives. The rig is meant for oil and gas field well cluster drilling with relative depth of drilling up to 6000 meters. In electrified areas power supply is realized from the industrial network with 6kV voltage, 50 Hz frequency. In non-electrified areas it is realized from the isolated power generating plant using no additional equipment. Operating conditions: macroclimate areas with moderate climate – U, category 1 according to GOST 15150-69 (- 45ºС...+ 40ºС) and hydrogen sulphide content less than 6 %.