Addressing the high investment and maintenance costs of domestic and international oil production metering systems,this study takes electric submersible oil pump wells as the research object,develops business models and algorithms for trend analysis,diagnosis,early warning,and production metering,and develops a set of virtual flow metering system.Equipped with functions of real-time data acquisition and monitoring,production metering,the system provides technical support for the oilfield to optimize the ground process technology,reduce cost and increase efficiency,and improve the level of fine management.