The invention relates to large-
discharge electric submerged
screw pump oil extracting equipment. Compared with the traditional electric submerged
screw pump oil extracting equipment which belongs to a large-
discharge series and also mainly comprises an underground motor, an underground rotating type
mechanical drive device, an underground
screw pump, and the like, the large-
discharge electric submerged screw pump oil extracting equipment has the technical scheme key that the underground screw pump is connected with an underground multistage motor by the underground rotating type
mechanical drive device; the screw pump is rigidly fixed on the sleeve
pipe wall of an
oil well by adopting the underground multistage motor with
high torque output and vibration resistance, a drum-gear
coupling with
high torque output, vibration resistance and an opening type structure, a series combined stopping type bear joint and an underground rotating type
mechanical drive device of a compensating type lubricating
oil tank through an anchoring device; the problem of oil leakage of an oil
pipe of a large-gradient well or a horizontal well is solved by adopting a hydraulic type oil
pipe oil drainer; and the large discharge of the electric submerged screw pump is realized by the technical measures, and thus the invention can be used for the
oil well with large-discharge (more than 200m<3> / d) on the electric submerged screw pump.