The pressure testing device can be used testing pressure of the flow string of the screw pump, and can ensure the rotor of the screw pump to be set in its stator successively. Through testing pressure for the flow string of the screw pump, even if there is rework caused by leakage of the oil pipe, the pressure testing device can still ensure operation quality, and reduce losses of oil wells.

31/2″EUE.59×17.5F Mid Joint	27/8″EUE.59×17.5F Mid Joint	31/2″EUE.59×17.5FCable protector
27/8″EUE.59×17.5FCable protector	Stuffing box	Sucker Rod Series
Tubing	Pumping Unit

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