The Design Of Submersible Reciprocating Pump Lifting Process

The linear motor is evolved from ordinary rotary motor. In this paper, the problem beam.pumping unit in use and the study status of linear motor are analyzed.Because of the linear motor with a simple structure and characteristics of controlling easily,it can be applied widely in many occasions.The study of the tubular linear motor for lifting in this dissertation is one among them.On the basis of the research on principle of linear motor, Motor magnetic field model is established and calculated by linear analysis method and finite element method(FEM). Based on the structure and characteristics of the tubular linear motor,the equivalent circuit from the perspective of energy balance has been set up, and the parameters of the equivalent circuit are calculated. On the basis of the previous research, we analyze various parameters what can affecting the motor performance.On the basis, we designed the down.hole submersible reciprocating pump(SRP)lifting process, what a work with similar electric submersible pump. Various theoretical and calculation methods of the system optimization design were put forward. For example, IPR curve of oil well, calculation of vertical multiphase flow,design of pump,select type of linear motors,calculation of fluid temperature site and physical property parameter, etc. Then, according to need of production site, we put forward the architecture and function of the SRP lifting system optimization design program, and implementation.At last, the effect of SRP used in field is analyzed. The system can resolves the problem of grave eccentric wear, low system efficiency and high energy consumption.