... cases except for the extra ‘body-source’ terms. reservoir characterization computation american association geophysics constitutive equation upstream oil & gas modeling exploration geophysicist recursive formula society ijkl media viscoelastic media auxiliary pde wavefield...

... geophysicist 10 reservoir characterization upstream oil & gas inversion result neural network applied geoscience annual international conference viscoelastic media recurrent neural network tv regularization qc 44 surface acquisition wave propagation machine learning deep learning acquisition...

... or basin areas, and viscoelastic media have a better representation of the subsurface properties than acoustic or elastic media. A main feature of RTM in viscoelastic media is to consider the compensation for the P- and S-wave attenuation effects. In this study, we develop an approach of Q-compensated pre...

... upstream oil & gas viscoelastic media viscoacoustic media viscoacoustic equation carcione equation curvilinear grid curvilinear coordinate Aki , K. , and P. G. Richards , 1980 , Quantitative seismology . 2nd ed. : University Science Books , 210 – 220...

... in viscoelastic media. Furthermore, the couplings between viscoelastic media and purely elastic media/fluid are also straightforward. This new implementation introduces remarkably less time consumption and fewer additional storage costs than the conventional auxiliary partial differential equations-based methods...

.... In this study, we developed an accurate and efficient 2.5D frequency-domain finite-element modeling algorithm for viscoelastic media using irregular unstructured mesh. Two models, an unbounded homogenous model and a rugged topography model, were exemplified and numerical results showed the accuracy...

... artificial intelligence viscoelastic isotropic media viscoelastic vti media finite difference method media seg seg international exposition upstream oil & gas viscoelastic tti-2 media focal mechanism illumination map viscoelastic media viscoelastic tti-1 media reservoir characterization...

... attenuation angle equation viscoelastic media fractional change upstream oil & gas quality factor coefficient innanen reflectivity s-wave velocity geophysics amplitude variation seg seg international exposition moradi reservoir characterization avo equation converted-wave...

... ABSTRACT A useful four term Amplitude Variation with Offset (AVO) equation for inhomogeneous PP-wave reflection coefficient for a weak contrast separating two isotropic low-loss viscoelastic media has been derived. This coefficient is complex and linearly depends on the fractional changes...

... in viscoelastic media, we use frequency decomposition convolutional model (FCDM) to illustrate the impact of attenuation on prestack seismic angle gathers. It allow us to consider the viscoelasticity on seismic gathers and have the potential to applied AVA/AVF analysis to the real data. Introduction...

... Summary Study of linearized reflectivity is very important for amplitude versus offset (AVO) analysis. Linearized reflection coefficients for interfaces of a low contrast, separating two isotropic, lowloss viscoelastic media are derived using the Zeoprittz equation. To calculate the phase...

... 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...

... numerical examples show that, with Q compensation, structures are better focused at the correct positions, and with more energy. Introduction Multi-parameter imaging in viscous media is of growing interest (Prieux, et al., 2013). For viscoelastic media, energy absorption and intrinsic velocity...

... al., 2008). In this abstract, we describe the physical mechanisms of several typical seismic and microseismic sources and their impact on the synthetic wavefield. Microseismic modeling in viscoelastic media is discussed by using simultaneous sources with different source characteristics. Through...

... ABSTRACT Seismic reflections can be caused by contrasts in quality factor. The constant Q model to describe the attenuation materials is very important to modeling this reflection phenomenon. Numerical simulation shows the constant Q property of the viscoelastic media can be fitted well...

... equation wave propagation media elastic medium upstream oil & gas boundary condition model 2 frequency different value rayleigh wave single-shot seismogram dispersion property vertical component viscoelastic media geophysics free surface modeling reservoir characterization...

... ABSTRACT Recently, Hashin-Shtrikman bounds for bulk and shear moduli of elastic composites have been extended to the moduli of composite viscoelastic media. Since viscoelastic moduli are complex, the viscoelastic bounds form a closed curve on a complex plane. We apply these general...

... ABSTRACT In this paper, anisotropic viscoelastic media are used to model hydrocarbon reservoirs and to simulate reservoir features such as aligned fractures, fine-layered structures, and fluid saturation. Full wavefield seismic modeling is carried out, based on the Fourier pseudospectral...

...), (Hudson 1980), while attenuation may indicate fluid saturation and a type of fluid. So, in the paper we present a new approach to finite difference simulation of sonic log for anisotropic viscoelastic media on the base of Lebedev scheme in cylindrical coordinates. Anisotropic media with attenuation...

... Summary Fast and efficient seismic modeling methods are usually needed for seismic inverse problems. In this work, we propose a flexible algorithm for simulating seismic wave propagation in dipping layered viscoelastic media, which has taken the frequency dispersion into account. Since...