关键词: 潜油电泵, 泵效, 能耗, 变频, 排量, 效率

Abstract: The effects of unreasonable choice of well and electric submersible pump(ESP) to oil production and energy consumption were analyzed.The statistical data show that the pumping units are mostly running with low pumping rate,which has a bad affect on the production.The small amount of pumping units running with high pumping rate has high energy consumption.The adaptability of ESP should be progressed to improve the pumping rate in the wells with low pumping rate.The wide-flow-path mixture pumps used in the polymer flooding wells were illustrated.The new type ESP should be used in high efficiency range for the wells with high pumping rate.Adopting the variable speed drive(VSD) technology can effectively broaden high efficiency range of pump and benefit to energy saving and decrease energy consumption to ensure the pump lifting.But raising the frequency can increase the load-power of pump much faster than the output-power of motor.For the motor with a little remain of output-power,the VSD technology can not effectively increase pumping rate.The energy saving and decrease of energy consumption can only be realized by adjusting parameters downwards.

Key words: electric submersible pump, pump efficiency, energy consumption, variable frequency, pumping rate, efficiency