各向异性粘弹性孔隙介质地震波场伪谱法正演模拟  

Numerical modeling of seismic wavefield in anisotropic viscoelastic porous medium with the pseudo-spectral method

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,东营257061

出　　处：《物理学报》2007年第10期6143-6149,共7页Acta Physica Sinica

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

摘　　要：地球介质各向异性、粘弹性以及孔隙特征是地震资料描述油气储层时应综合考虑的.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,采用伪谱法正演模拟了各向异性粘弹性孔隙介质地震波,进行了其波场特征分析.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.In order to describe the reservoirs more accurately, the characteristics of the earth medium must be considered comprehensively, such as the anisotropy, viscoelasticity and pore, etc. Consequently, an anisotropic viscoelastic porous medium model is presented in this paper, and the elastic wave equation in this medium has been derived. The seismic wavefield numerical modeling was simulated by using the pseudo-spectral method. Synthetic seismograms are used to show the characteristics of the seismic wave in complex medium. The research work is useful to understanding seismic wave propagation in earth medium.

关 键 词：各向异性 粘弹性 孔隙 伪谱法 

分 类 号：P315.31[天文地球—地震学]