Correlation analysis of two kinds of ESP adjusting-parameters:choke and VSD

To adapt to the change of oil well productivity,VSD adjusting-parameter is commonly adopted for electric submersible pump.But to some units that have little pumping rate or have little change of frequency,VSD can not be used to get satisfying application effect.The paper synthetically analyses the basic manners and their characteristics of two kinds of ESP adjusting-parameters(surface choke adjusting-parameter and VSD adjusting-parameter,comparing primary input-cost and productive energy consumption between two kinds of manners.The method of determining energy consumption based on load power is presented.The energy consumption analysis method using load power and the approach adopting one VSD controller to serve several ESP are suggested to fully realize oilfield production efficiency.Within estimated pumping rate and lifetime cycle,correlation analysis shows that surface choke adjusting-parameter is sometimes more simple and economic than VSD adjusting-parameter.