Electric submersible centrifugal pump of single-stage is more extensive application of a rodless oil pumping device, the motor and the single-stage centrifugal pump went down to the underground and the oil pipe is connected, the motor is connected through a cable and a ground power source and its underground units by multi-stage single stage centrifugal pump, protector and submersible electric machine composition. Electric submersible centrifugal pump is especially suitable for the water injection development in the Oilfield during the middle and late stages of large displacement pumping well.

    With the deepening of wells, wells in the oil and gas content decreased gradually, in order to fully carry out further exploration should be to the oil well water injection and filling chemicals. High power high pressure centrifugal pump (multistage single-stage centrifugal pump or high-speed single-stage centrifugal pump is the key equipment of water).

    Oil gas was pumped into the ground, after collecting and Huang Hui set to oil gathering station, after the oil and gas preliminary separation, then lost to union station for heating separation, dehydration, stability of crude oil, sewage after settling, filtering, natural gas after removing light oil, dehydration, and finally into crude oil, natural gas, clean water and light oil four kinds of qualified products, then after the separation of crude oil and natural gas directly sent to refineries or transported by pipeline to the use of units. In the gathering and transportation process, the single stage centrifugal pump plays the role of conveying fluid, which is indispensable for the gathering and transportation process.