渗流场及其相关场耦合的数学模型

盆地数值模拟是含油气盆地定量化研究的重要手段.在盆地演化过程中各种场相互作用和影响,因此,在盆地模拟时要综合考虑多种场变量的耦合作用。建立了多插相互作用的耦合非线性数学模型,并通过有限元数值方法对莺歌海盆地进行了数值模拟。莺歌海盆地是一个高温高超压盆地,其温、压、流场具有强烈的非线性耦合关系。计算表明所建模型适合莺歌海盆地。

THE NUMERICAL SIMULATION OF COUPLING FLOW,TEMPERATURE AND PRESSURE IN YINGGEHAI BASIN

The numerical simulation is an important method in quantitative analysis of petroleum basin. In the course of basin evolution,all kind of field variables are interplay and influence each other. It is very necessary to consider coupling temperature,pressure and flow in basin modeling. In this paper,the nonlinear numerical model coupling temperature,pressure and flow is introduced. Finite element method is adopted in solving control equation. The authors apply this numerical model to simulate Yinggehai basin. There are high temperature and hard over-pressure in the basin,so temperature,pressure and flow are of nonlinear coupling relation. Result of calculation indicates that this numerical modeling is fit in Yinggehai basin.