CFD ANALYSIS ON POLYMER FLOW FIELD IN NOZZLE OF SEPARATE LAYER INJECTING TOOL
Polymer flooding is one of the most important technical methods in maintaining the sustainable development of petroleum development in the later stage of high water cut.Reservoirs are extremely heterogeneous in most of petroleum development, separate layer injection technology and injecting tool are used to solve the interlayer contradictions resulted from the general injection mode during polymer flooding. And the flow parameters of polymer injecting should be adjusted by separate layer injection allocation due to the different requirements of injection when separate polymer injection is used. As to the problems mentioned above, a new separate polymer injecting tool of cylindrical cavity with nozzle and isometric ring slots is developed. The pressure drop and the viscosity loss of polymer solution when flowing through newly injecting tool, which is low shearing and realized downhole separate polymer injection of polymer solution with single string, injecting polymer in 2 layer at the same time, it can be changed to meet the requirement of injection through adjusting nozzle diameter and core distance. The investigation of the flow characteristics inside the nozzle becomes more and more important because of the polymer flow status in the nozzle and polymer injection which can significantly influence the polymer flood and the performance of viscosity loss. Due to the limited experimental conditions, CFD models can be used to predict the flow pattern inside the injectors and promote the level of selection and design of injectors accompany with some experimentations. Three-dimension calculation model of the flows in the nozzle of a certain diesel engine was set up. Simulation analysis of fluid flow in the nozzle was performed by computational fluid dynamics software package FLUENT.A lot of information, including velocity field, pressure distributions of the nozzle was obtained, and the diversification of polymer’s compressibility and viscosity changed with the pressure and temperature are also taken into account. The real distribution of the flow field in the nozzle can be forecasted through investigating, and even some improvements can be indicated by analyzing the reasonability of nozzle design.
Ding Feng Ximei Li Menglan Duan
College of Mechanical Engineering, Yangtze University, Jingzhou, 434023, Hubei, China College of Mechanical and Electrical Engineering, China University of Petroleum, Beijing, 102249, Ch
国际会议
第四届亚太地区海岸会议(the Fourth International Conference on Asian and Pacific Coasts)
南京
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）