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本文从流体动力学的基本规律出发，应用渗流力学、岩土力学及弹性力学的理论及方法，推导出了考虑应力状态的可变形介质中流体运动的动力学方程，由该方程可以看出：应力状态是影响流体运动的一个非常重要的因素，它通过３种方式来影响流体的运动，其一是：应力的作用改变介质的渗透性能，从而影响流体运动；其二是：平均正应力的变化速率影响介质的含流体能力，它以源汇项的形式反映在方程中；其三是：应力的作用影响流场的初始状态及边界状态，通过影响定解条件反映在动力学方程中，从而影响运动特征。构造应力场对流体运动的最终影响是这３方面作用的总效果。作为流体研究的一个实例，油气的运动特征完全符合一般流体的运动规律，本文通过某油田３个时期不同应力状态下油气运移的模拟研究可以看出，在不同的构造应力状态下，油气的运移特征是完全不同的，它从一个侧面反映出应力状态对流体运动的影响。
Based on the basic law of hydrodynamics, this paper deduces the dynamic equation of fluid motion in the deformable medium considering the stress state by using the theories and methods of seepage mechanics, geotechnical mechanics and elastic mechanics. From this equation, we can see that: Stress state is a very important factor affecting the fluid movement. It affects the fluid movement in three ways. One is that the effect of stress changes the permeability of the medium and thus the fluid movement. The other is the average normal stress The rate of change affects the fluid-containing capacity of the medium, which is reflected in the equation as the source and sink terms. The third is that the effect of stress on the initial state and boundary state of the flow field is reflected in the kinetic equations by affecting the solution conditions, Thus affecting the movement characteristics. The ultimate effect of tectonic stress field on fluid motion is the total effect of these three aspects. As an example of fluid research, the movement characteristics of oil and gas are in full compliance with the general laws of fluid movement. In this paper, through the simulation study of hydrocarbon migration under different stress states in three oil fields, we can see that under different tectonic stress conditions, The migration feature is completely different, which reflects the influence of the stress state on the fluid motion from one side.