... that combined linearized AVO modeling and linearized rock physics relations. The rock physics model is based on Nur's critical porosity model and Gassmann's equations and its linearization is based on first-order Taylor series approximation. The linearization is computed with respect to solid elastic moduli...

..., 2017 Start Time: 1:50 PM Location: 381A Presentation Type: ORAL stochastic inversion seismic inversion bayesian inference posterior distribution grana seg seg international exposition machine learning reservoir characterization seismic data linearization model parameter inversion...

... 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...

... machine learning evolutionary algorithm velocity model modeling operator rough component amplitude normalization operator amplitude gradient normalization stanford university linearization full waveform inversion ali almomin reservoir characterization artificial intelligence...

... perturbations. The extension is based on a new linearization of the scalar wave equation where the extended velocity perturbation are convolved in time with the Laplacian of the background wavefield. This linearization is accurate for both reflected events and transmitted events, and in particular for diving...

... of TFWI. First, the linearized residual are updated in a nested inversion scheme. This step corrects for the underlying assumption that the data contain primaries only without multiples. Second, the two components of the gradient are first mixed and then separated based on a Fourier domain scale...

...Wave-equation migration velocity analysis beyond the Born approximation Paul Sava*, Stanford University and Sergey Fomel, Lawrence Berkeley National Laboratory SUMMARY Wavefield linearization using the Born approximation is based on the assumption of small slowness perturbation. We investigate...

... ABSTRACT No preview is available for this paper. surface inhomogeneity convolution linearization interpretation reservoir characterization multiplication factor receiver identification seismic exploration application spectra-statistical method goldin incidence wavefield...

... ABSTRACT No preview is available for this paper. attractive method sharp description reservoir characterization reference medium non linear inversion computation linearization linearized inversion upstream oil & gas linearized seismic inverse problem inverse problem...

... inhomogeneity linearization variable background traveltime equation background velocity slowness Seismic 17 bations of a constant background velocity. they suggest a variable background be used. Motivating this idea is the fact that if the background velocity roughly mirrors the actual velocity trend...

... small relative equation inhomogeneity linearization integral equation upstream oil & gas method use only average velocity inversion inverse problem slowness impedance perturbation tau-p domain seismic arrival amplitude information integration reservoir characterization...