Investigation On Rate Estimation Method Of Electric Submersible Pump In Offshore Oil Field

Electric submersible pump lifting technique is one of the most common artificial lift method for offshore oil field,to monitor the flow of electric submersible pump,flow monitoring and management system in offshore oil field to establish the virtual measurement module,traffic prediction model is established,the flow of oil in the prediction of electric submersible pump in offshore oil field,improve the flow monitoring and management system in offshore oil field,to master the dynamic changes of oil Wells in offshore oil field,evaluation of offshore oil field production characteristics is crucial,and provides a powerful guarantee for the flow of the crude oil safety.Based on the downhole ESP system,this paper explored the influence of fluid on the performance of ESP under different working conditions,and established an esp flow inversion model combining the two.In this paper,the water conservancy association viscosity formula(HI)was used to modify the viscosity of single-phase fluid,and the application scope of HI formula was further adjusted.Based on this,the single-phase fluid electric submersible pump flow inversion model was established and verified.The factors affecting the emulsion viscosity were discussed,and Dan Dou viscosity model was used to calculate the emulsion viscosity.In the end,the influence of the working condition with gas on the performance curve of the electric submersible pump is explored,and the performance correction formula for the working condition with gas is proposed.At the same time,the formula for determining the surge point is proposed.The performance of the electric submersible pump is analyzed step by step,and the influence of the working condition with gas on the electric submersible pump is qualitatively analyzed.