各向异性粘弹性孔隙介质伪谱法波场正演模拟  

Wavefield numerical modeling with the pseudo-spectral method in anisotropic viscoelastic porous media

作　　者：杜启振[1] 刘莲莲[1] 孙晶波[1] 

机构地区：[1]中国石油大学(华东)地球资源与信息学院

出　　处：《油气地球物理》2007年第1期22-26,共5页Petroleum Geophysics

基　　金：国家自然科学基金(40304008);中国石油天然气集团公司石油科技中青年创新基金(05E7028)

摘　　要：在用地震资料描述油气储层时应综合考虑地球介质所表现出来的各向异性、粘弹性以及孔隙特征。本文建立了各向异性粘弹性孔隙介质模型,导出了各向异性粘弹性孔隙介质的弹性波波动方程,采用伪谱法进行了正演模拟,并分析了其波场特征。该研究有益于加深对地震波在实际地球介质中传播规律的认识。When describing reservoirs by seismic data, the characteristics of the earth medium, such as anisotropy, viscoelasticity and pore etc, must be considered comprehensively. Based on the statement above, the anisotropic viscoelastic porous media model is presented in this paper, the elastic wave equation in anisotropic viscoelastic porous media has been derived, and the numerical modeling was simulated by using the pseudo-spectral method. Synthetic data are used to show the characteristics of the seismic wave in complex medium. The research work is useful for further under stand seismic wave propagation in earth medium.

关 键 词：各向异性 粘弹性 伪谱法 波动方程 

分 类 号：P631.443[天文地球—地质矿产勘探]