... into curvilinear grids and map the models and the firstorder velocity-stress viscoacoustic equation into the curvilinear system. However, the first-order velocity-stress viscoacoustic equation has difficulty in compensating the energy loss and correcting the phase effects because of the memory variables. Therefore...

... difference or finite element methods, this leads to both proportionally increase computational operations and storage to the number of relaxation functions. In this study, we implement the 3D realistic anelastic attenuation into the spectral-element method by using the method of coarse-grain memory variables...

... components of the P- and S-waves in the input wavefield is desired. With a decoupled assumption, we rearrange the memory variables in the elastodynamic equations based on the standard linear solid. The vector components of the propagating P- and S-wave can be can be decomposed in isotropic viscoelastic media...

... migration viscoacoustic wave equation pseudo-differential operator annual international meeting compensation memory variable attenuation compensation Attenuation compensation in viscoacoustic reserve-time migration Jianyong Bai*, Guoquan Chen, David Yingst, and Jacques Leveille, ION Geophysical...

... grid poroviscoelastic wave equation reservoir characterization propagation equation upstream oil & gas boundary reflection grid number memory variable saenger 3D poroviscoelastic rotated staggered finite-difference modeling with PML absorbing boundary conditions Yuankai Zhang1,2...

... ABSTRACT No preview is available for this paper. zener element modeling memory variable accuracy blanch courant number lax-wendroff correction correction stability limit reservoir characterization equation upstream oil & gas phase velocity differential equation pseudo...

... upstream oil & gas geophysics stress component memory variable perpendicular MOD 1.6 A numerical free-surface condition for elastic/viscoelastic finite-difference modeling in the presence of topography Johan 0. A. Robe&son*, Swiss Federal Institute of Technology, Switzerland Summary An algorithm...

... ABSTRACT No preview is available for this paper. stable scheme viscoelastic wave propagation blanch reservoir characterization simulator dispersion upstream oil & gas attenuation differential equation boundary finite difference method memory variable conditionally stable...

... ABSTRACT No preview is available for this paper. attenuation frequency upstream oil & gas equation simulation three-dimensional forward modeling quality factor memory variable dominant frequency relaxation time reservoir characterization alfred behle isotropic...