Screw Pump Well Deviation Control Technology Research And Application

The screw pump oil extraction technology has become the beam pumping unit and the electric submersible pump and after a relatively mature artificial lift method,Ground drive screw pump oil production system with a simple structure,with early equipment investment,good energy saving effect and adapt to a wide range of advantages,it is widely used in domestic and foreign oil.as the screw pump oil recovery technology is mature and perfect,it has been basically can meet the need of oil field,in polymer flooding?three element composite oil displacement and heavy oil shows better adaptability.But,as the rotating speed of the screw pump and the continuous improvement of capacity increasing,and the produced liquid properties changing,especially in Daqing oil field polymer flooding wells and directional wells,rod and tubing wear problem is becoming more and more serious,screw pump stability,reliability and matching technology improvement and conventional machine mining way than there is a certain gap.In particular the sucker rod rate has become an obstacle to the development of one of the main problems.Based on the recent research work is limited to the laboratory experiment,still can not fully reflect the real working condition of the downhole screw pump.Therefore,This paper starting from theoretical analysis,establishmenting of finite element model,using ANSYS finite element analysis software for static analysis and calculation of rod string,combining with the specific structure data,given the sucker rod string centralizer spacing and the reasonable configuration of eccentric wear prevention measures,studied of incentive,this paper put forward measures for rectification,and solved these problems from go up at all.Through the development of screw pump well measure optimization,This paper guides to the application of screw pump well,testing multiple injection wells.The result is better,and it is of great significance.