The invention discloses a pumping assistor used for an
oil well pump. The pumping assistor comprises a
sieve tube, a liquid inlet
barrel, a rotary mixer, an oil tube, a flow rate changing device and an ejector, wherein the
sieve tube is used for filtering
oil well output liquid; the liquid inlet
barrel comprises an upper section, a middle section and a lower section, and the lower section of the liquid inlet
barrel is connected with the upper end of the
sieve tube; the rotary mixer is arranged inside the liquid inlet barrel, and comprises a rotating shaft and blades arranged on the rotating shaft; the upper end of the oil tube is connected with a pump seat of the
oil well pump, and the lower end of the oil tube is connected with the upper section of the liquid inlet barrel; the flow rate changing device is arranged inside the oil tube, and comprises at least
one stage of flow rate
transducer; the ejector is arranged at the top end of the oil tube and is positioned inside the pump seat; the ejector comprises an ejection barrel and a spiral plate arranged on the outer side of the ejection barrel. Under the
precondition of unchanging formation pressure and feed liquid capacity,
electricity is not used, namely the instant line speed of the oil well outlet liquid can be improved, so that pressure energy is changed into
kinetic energy, the liquid flow rate is quickened, the liquid flow state is changed, the filling coefficient of the pump is improved, and the yield is increased.