人工振动采油工艺中多孔渗流介质的耦合波传播模型

COUPLING WAVE PROPAGATION MODEL THROUGH POROUS MEDIA IN ARTIFICIAL VIBRATION OIL PRODUCING

张文飞 李晓江 王东海 李景勤 叶冬梅

Zhang Wenfei Li Xiaojiang Wang Donghai Li Jingqin Ye Dongmei

大庆石油学院 辽河石油勘探局

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。

Based on the research of coupling wave propagation model in artificial vibration oil producing technology, it is thought that the underground media is composed of deformable solid skeleton and fluids that saturate the pores in the skeleton. wave is not only propagated through solid skeleton but also through fluids. Thus the considered problem is a coupling wave. This paper introduces various physical models of artificial vibration oil producing, and presents the control differential eauations of coupling wave propagation. To deal with the wave propagation problems in infinite domain, nonreflecting boundary conditions, which are available for transient analysis, are recommended. The formulae of finite element method to solve this problem ase given combining with appropriate instant integration schemes.

10.3969/j.issn.1000-7393.1997.01.014