... Direction-dependent seismic velocity and attenuation, namely seismic anisotropy, is inherent attribute of Earth media. It has been widely confirmed in both field and lab measurements, and has a prominent effect on amplitude, phase, and travel time characteristics of seismic wavefield. Accurate...

... This study aims to simplify the quasi-P (qP) wave equation from the elastic wave equation in Horizontal Transverse Isotropy (HTI) media, thereby enabling more accurate anisotropic wavefield simulation in fractured media. Based on the finite difference method, we implement the new 3D anisotropic...

... Starting from the complex phase velocity, in this paper, we derive a system of 2nd order wave equations in 3D visco-acoustic TTI media that can be employed in Reverse Time Migration (RTM) to simultaneously compensate for phase and amplitude distortions. Unlike most available wave equations...

.... Magnitudes of two vectors are scaled by normalization. We demonstrate that the vector computed by multiplying time derivative and gradient of wavefield has the direction of phase velocity in isotropic and anisotropic media through the comparison between the wave propagation direction vector calculated...

... acoustic media, so it doesn’t guarantee accurate transformation in complex heterogeneous viscoelastic anisotropic media. We adhere to a straightforward filter for compensating amplitude, incorporating offsets and phase shifts, and adjusting the stretching factors to rescale amplitude differences across...

... geology migration separation american association media imaging wavefield geophysics elastic reverse time migration inversion application Elastic reverse time migration with more than pressure data Denes Vigh*, James Xu, Xin Cheng, Zongcai Feng and Bing Bai, SLB Summary In practice...

...) can alleviate migration noise, balance the amplitudes for middle and depth layers, and enhance the imaging resolution, we implement attenuation-compensated LSRTM in TTI media to further improve the imaging quality. However, during attenuation-compensated imaging, the high-frequency component...

...) media. The new stencil is a valid combination of several off-axial grid nodes and the traditional one. Plane-wave theory and several mathematical simplifications are used to derive high-order FD coefficients. Numerical analyses and 3D simulated examples have demonstrated that our proposed approaches can...

... characteristics of subsurface media precisely, we have proposed a novel wave equation for 3D tilted transversely isotropic (TTI) media and implemented the corresponding numerical modeling. First, an optimized pure acoustic wave equation (PAWE) is established from the exact dispersion relation. Model parameters...

... This study addresses the seismic anisotropy issue of tight sandstone thin reservoirs by proposing a pre-stack inversion algorithm. By modeling the thin reservoirs as layered structures intercalated with vertically transversely isotropic media, this algorithm utilizes an anisotropic rapid...

... parallel environment reservoir characterization chet derivative frequency-domain viscoelastic fwi numerical experiment geologist geological subdiscipline applied geoscience & energy 10 exploration geophysicist media geology experiment equation american association 3D frequency-domain...

... In contrast to ad-hoc solutions found in the literature, we propose a new systematic and automated approach to generate shear-wave velocity models needed for stable pseudo-acoustic wave-equation modelling and inversion over vertical or tilted transverse isotropic media. Our method ensures...

... in thermoelastic media, this paper derives the propagation equations of seismic waves in thermoelastic media under fluid-solid coupling conditions. In addition, the temperature effect is considered. The method uses different wavegoverning equations in different mediums and adopts appropriate boundary conditions...

... The modeling and numerical simulation of Scholte wave propagation in media with solid and fluid are essential for marine seismic exploration data analysis. However, the current studies of Scholte wave less focus on the characteristics of displacement, and the seismic wave field at the fluid...

... Compared to isotropic media, AVO inversion based on VTI media enables the acquisition of high-precision elastic parameters. Traditional inversion methods typically rely on low-frequency elastic parameters, while intelligent inversion methods often necessitate a vast number of training samples...

... Forward modeling of viscoacoustic wave propagation is essential for the realization of migration imaging in attenuating anisotropic media. To describe the attenuation and anisotropy properties of subsurface media, the pure-viscoacoustic anisotropic wave equation has been developed to simulate...

... As one of the main imaging methods, Reverse Time Migration (RTM) in anisotropic media can obtain highprecision imaging profile. However, in practice, inaccurate migration velocity field will lead to depth/velocity ambiguities which affect pre-stack depth migration imaging quality. At the same...

... We use a model that combines the Biot and Lord- Shulman (LS) theories to study mesoscopic P-wave attenuation in partially saturated thermo-poroelastic media. This effects are due to the presence of mesoscopic-scale heterogeneities causing mode conversion from fast P-waves to slow Biot...

... We present an approach for modelling the frequency-dependent seismic properties in periodic layered VTI media with penny-shaped cracks. We analyze the dispersion, attenuation and frequency-dependent anisotropy of seismic wave velocities, and investigate the effects of different parameters...

.... The feasibility and accuracy are verified for both homogenous and heterogenous media. reservoir characterization modeling boundary snapshot geologist geological subdiscipline international exploration geophysicist differential operator upstream oil & gas fluid-solid interface equation...