【作者】 王法永；

【导师】 周晓君；

【作者基本信息】 中国石油大学 ， 油气田开发工程， 2008， 硕士

【摘要】 液压增压单井增注系统采用供水干线的水压作动力源,利用活塞面积差实现增压注水,运行稳定可靠,费用低,具有较好的经济技术指标。研究了组成液压增压单井增注系统各元件的结构、工作原理以及系统各参数的计算方法;建立了系统和蓄能器的数学模型和仿真模型,利用MATLAB中的SIMULINK软件包分别对未加蓄能器和加蓄能器的系统进行了动态仿真,说明了蓄能器对于系统工作稳定性的意义;研究了两种常规结构的插装阀,即阀芯为锥形的插装阀和阀座为锥形的插装阀,首先应用计算流体力学(CFD)专用软件Fluent的后处理器软件Gambit建立了插装阀的三维物理模型并对其进行了网格划分,然后利用Fluent对两类插装阀分别进行了三维稳态和动态数值模拟,分析了两类插装阀的速度场和压力场以及每种插装阀在不同开度下的速度场和压力场的变化情况;在对两种类型插装阀模拟和分析的基础之上,对插装阀进行了结构优化,提出了两种优化模型并对其进行了数值模拟,给出了流场可视化的计算结果并通过比较阀座为锥形插装阀和两种改进的插装阀的压力损失、流量系数、阀芯受力等参数,说明了优化效果。在中原油田采油三厂和文明寨油田的配合下,在10号注水站进行了现场试验。更多还原

【Abstract】 The system of hydraulic supercharging water injection for single well uses the pressure of the water supply line as the power source and the area difference of the piston to realize the supercharging water injection, it runs steadily and reliably and the operation cost is very low, so the system has better economic and technological index. The thesis studied each part’s structure, working principle and each parameter’s calculation method of the system. The thesis established the mathematical model and simulation model of the system and the storage generator, carried out the dynamic simulation for the system with storage generator and without by the SIMULINK in MATLAB and showed the storage generator’s significance for the working stability of the system. The thesis studied cartridge valve with cone valve core and cartridge valve with cone valve seat, firstly, establishing the three-dimensional physical model of the cartridge valve by the Gambit in Fluent of CFD and generating the mesh of the cartridge valve, secondly, carrying out the steady-state three-dimensional numerical simulation and the dynamic, finally, analyzing the velocity field and the pressure field and the change of the velocity field and the pressure field for each kind of cartridge valve in different opening. On the base of simulation and analysis for the two types’cartridge valve, the thesis optimized the structure of the cartridge valve, proposed two kinds of optimization model and numerical simulation were carried out, gave the visual results of the flow field and showed the effect of the optimization by comparing the parameters of pressure drop, flow coefficient and the force on the valve core. Under the cooperation of the Third Production Company in Zhongyuan Oilfield and Wenmingzhai Oilfield, the field test was carried out in NO.10 water injection station.更多还原