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系统地研究了人工振动采油工艺中的耦合波传播模型,认为地下介质是由可变形的固体骨架和骨架孔隙中的饱和液体组成,波不仅在固体中传播,而且也在液体中传播,因此所考虑的问题是一个耦合波。文中介绍了各种人工振动采油的物理模型,给出了耦合波的控制微分方程,为处理无限域中波的传播问题,推荐了在瞬态分析中有效的粘性阻尼吸收边界条件,结合适当的瞬态积分方法,导出了解决此问题的详细的有限元法计算公式。
The coupled wave propagation model in artificial vibration oil recovery process is systematically studied. It is considered that the underground medium consists of a deformable solid skeleton and a saturated liquid in the skeleton pores. The wave propagates not only in the solid but also in the liquid. Therefore, The problem to consider is a coupled wave. In this paper, various physical models of artificial vibration oil production are introduced and the governing differential equations of coupled waves are given. In order to deal with the wave propagation problem in infinite fields, the effective viscous damping absorption boundary conditions for transient analysis are recommended, Transient integral method, a detailed finite element method formula to solve this problem is derived.