Research On Digital Design Method For Electrical Submersible-Motor-Driven Progressive Cavity Pumping System

With the rapid development of the oil recovery industry in recent years,the Electrical Submersible-motor-driven Progressive Cavity Pumping System(ESPCPs)has been widely used,and scholars from all walks of life have gradually deepened their research on the internal structure of the system and optimized innovative solutions are increasingly novel.However,the formulation and design calculation of the oil recovery system was still at the traditional stage,with a large workload,long lead time,low accuracy and other key problems that need to be solved.In this thesis,the digital design method of oil recovery system of ESPCPs is studied,and a digital design software system that can adapt to different parameters,different modules and different users is developed.The adoption of digital design technology is not only conducive to improving the design quality of the whole system,but also can shorten the design time and reduce the design cost,improve the development efficiency of enterprises and promote the development of science and technology.In this thesis,we first analyzed the internal structure and worked principle of the whole oil recovery system and analyzed the principle and configuration of key components from the theoretical analysis.In order to ensure that the configuration is reasonable under different well conditions and different structural parameters,we combined the new structure of the system and the configuration principles of the screw pump,reducer and protector,built a digital model of the structure of each component,proposed a configuration optimization scheme and established a The related data sheet was established.Next,the design and calculation of key components of the oil recovery system were studied,and the calculation process was converted into digital form through the program,and the naming and expression of the parameters were standardized to address the problem of unclear parameters in the calculation.The particle swarm algorithm is used to design the variables to be optimized,the objective function and the optimal solution according to the constraints,and the algorithm is improved in order to solve the problem that the algorithm is easy to fall into the boundary optimal solution of variables.Once again,the software system was analyzed in terms of requirements,design process,software architecture,conceptual model,human-computer interface,data exchange,the development environment of the digital design software system was determined based on the theory,and the structure of the database was designed to achieve dynamic addition of data to achieve resource sharing.Finally,we simulated users to run examples and analyzed the results of parameter optimization data.Through the above work,a more ideal digital design software for ESPCPs was developed,which realized the functions of user management,inputting original well parameters to query the matching scheme,inputting component correlation coefficients to calculate geometric dimensions and optimization,etc.Intelligent algorithms were used to improve the calculation speed and obtain the ideal parameter data.