The System Function Research For Elastic Constituent Porous Fluid Medium

In this paper, based on points with the conversion component type elastic porous media theory, the application of finite difference method to achieve the two-phase elastic constituent porous medium wave field numerical simulation, and summed up the analysis of seismic waves in the component-type model in porous propagation of the wave field.In this paper, the results can be extended to medium and porosity of the reservoir of the oil, gas and water resources related fields such as seismic exploration and development, on people’s awareness and understanding of the fluid containing the laws of wave propagation and that the structure of the underground media and various aspects such as lithology, has important theoretical significance and application value.In the guidance of my teacher and on the basis of predecessors ,I major learned and achieved the following contents:1、Point conversion with the elastic component of the theory of porous media research and elastic modulus of the study. Learning in the whole porosity range given vector and scalar elastic conversion point, and arrive at the conversion point on the component-type elastic porous media expression of the elastic modulus.2、Numerical simulation of wave field of the staggered-grid finite difference method Study the wave field simulation which uses staggered-grid finite difference method, and controlled the application of the corresponding initial conditions, stability conditions, boundary conditions, perfectly matched layer, flux corrected transport methods.3、Application of VC++ program to achieve component type elastic porous media model in the numerical simulation of wave field, simulated porosity under different geological model of the theory of seismic wave propagation in a snapshot map and vibration maps, graphical analysis to explain these observed the longitudinal and transversal wave, focusing on analysis of vibration map of the difference spectrum, which summed up the component type elastic porous media under different porosity of the law of seismic wave propagation4、Based on the above work, the focus analyzes were in different porosity, the seismic wave characteristics of the kinematics and dynamics. According to the vibration of maps simulated, corresponding to the frequency spectrum, phase diagram, by the initial wave of vibration map, frequency spectrum, phase diagram, available under different medium porosity system response function, and analyzed the system function of the differences then given a preliminary interpretation.5、In a given model and the same excitation conditions, the same reception point, respectively, to receive the X component and Y component, a comparative analysis of their vertical and horizontal wave vibration map, frequency spectrum, phase diagram, the system function and its spectrum between the the similarities and differences, both components of the wave in the elastic medium pore fluid dissemination of the laws have a profound and comprehensive understanding of the theoretical study and completeness.