压力脉冲解堵振荡场数值模拟

在油田开发过程中油水井地层堵塞一直严重影响油水井产能,在诸多解堵方法中,压力脉冲解堵技术由于施工方便、操作简单,有很好的应用前景.目前解堵机理方面还有待进一步研究,所以对压力脉冲解堵工艺进行数值模拟计算.以压力解堵脉冲管为研究对象,建立其三维结构模型,研究其腔室内部结构,分析其结构尺寸对流场的影响规律.建立其内部流场二维简化模型,编译装置内橡胶球体运动状态的UDF程序,应用动网格技术通过Fluent对脉冲管内非定常流动进行数值模拟计算.通过对流场压力、速度及进口截面物理量的监测,研究分析仪器安装深度、工作流量、装置结构及地层泄压过程对压力震荡场的影响规律.揭示脉冲管工作机理,推动认识压力脉冲解堵工艺的本质,为脉冲管的结构优化设计提供依据和方向,为压力脉冲解堵技术的应用及其动力学模拟奠定理论基础.

The Numerical Simulation of the Pressure Pulse Plugging Technology in Pressure Shocks Field

In the oil field development process,oil wells production capacity has been severely affected by clogged wells.There are many ways to relieve clogged wells,due to easy to operate,on the lifting of the blockage formation,the pressure pulse plugging technology has good prospects,but the current theory remains to be further studied,so the pressure pulse plugging process was simulated necessary.The task to pressure pulses pulse tube plugging device as the research object,the establishment of its three-dimensional structure model to study the internal structure of the chamber,to analyze the impact of the flow field structure size rule.Establish its simplified model two-dimensional flow field,the compiler can achieve the state of motion of the sphere device UDF,application dynamic mesh of the pulse tube through Fluent unsteady flow was simulated.By convection field pressure,velocity and import-sectional physical monitoring equipment installation depth research and analysis,work flow,pressure relief device structure and the formation process of the pressure shocks field were investigated.Reveal the pulse tube working mechanism,and promote understanding of the pressure pulse plugging the nature of technology,optimize the structure of the pulse tube design basis and direction for the pressure pulse plugging technology and its theoretical foundation dynamics simulations.