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Showing 1 to 10 of 10 for “"Zoeppritz"”.
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Calculation of a Synthetic Gather using the Aki-Richards Approximation to the Zoeppritz Equations
… wavelet to create a synthetic seismic trace. The Zoeppritz equations describe the propagation of an acoustic wave across an interface between two viscous media of different acoustic impedances with respect to increasing offset angle. The Aki-Richards linear approximation is used to create a …
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Estimation of seismic parameters from multifold reflection seismic data by generalized linear inversion of Zoeppritz equations
… for its basis the inversion of the plane wave Zoeppritz. equations by generalized linear inversion (GLI) and bootstrapping. The Zoeppritz equations are converted into the time-offset domain by using Snell’s law, common mid-point (CMP) geometry, and two-way travel (twt) time. The equations in …
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Extracting Polar Anisotropy Parameters from Seismic Data
… isotropic AVO forward modeling, using isotropic Zoeppritz equations or its approximations, and a wavelet extracted from the seismic data, to get synthetic seismic data. Compared with real seismic data, these synthetic data are scaled differently, and ignore many propagation effects. …
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Challenges of geophysical processes and interpretation of an unconventional play: a case study from Wattenberg field, Denver-Julesburg Basin, Colorado, The
… with angle or offset, evidenced from both Zoeppritz and Elastic forward modeling based on rock properties obtained from a well located in the northwestern part of the seismic survey and supported by recent previous work within the basin. Post-stack inversion was used to assess relative …
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Scattering of Seismic Waves from Arbitrary Viscoelastic-Isotropic and Anisotropic Structures with Applications to Data Modelling, FWI Sensitivities and Linearized AVO-AVAz Analysis
… AVO/AVAz equations without using the solution of Zoeppritz equations. This analysis is the starting point for any FWI strategy in a complex media exhibiting both attenuation and anisotropy, as the scattering potentials that we obtained can be effectively implemented to choose a suitable model …
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SEISMIC SIGNATURES OF PORE CONNECTIVITY
… especially pore connectivity. Firstly, I use the Zoeppritz equation to analyze reflection coefficient's sensitivity to eight medium parameters; results show they all have significantly different sensitivity. Friability is an empirical parameter introduced in General Singular Approximation (GSA) to …
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Modelling, Migration, and Inversion for Angle Domain Common Image Gathers
… and the results are compared with the exact Zoeppritz equations to validate the accuracy of the modeling process. The migration of ADCIGs is based on reflection angle extraction methods in Reverse Time Migration (RTM) fullfilling the requirement of the true amplitude migration. The inversion …
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Physical Modeling and Analysis of Seismic Data from a Simulated Fractured Medium
… agreed with the amplitudes predicted by the Zoeppritz equations, con rming the suitability of the 3D physical model data for a quantitative amplitude analysis. Linear AVAZ inversions for the fracture orientation and HTI anisotropic parameters (including shear-wave splitting parameter) were …
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Investigation of and correction for waveform changes arising from NMO stretch
… convolution models are generated with the Zoeppritz equations. For both models, the amount of frequency shift, called ‘stretch-ratio’, are computed to determine waveform changes accurately. In the first model, which generates one reflectivity boundary concerning top of AVO Class 3 …
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Modeling Offset-Dependent Reflectivity for Time-Lapse Monitoring of Water-Flood Production in Thin-Layered Reservoirs
… model to an idealized analytical Zoeppritz model. In a second step, an offset-dependent overburden correction was applied using a low order polynomial, which was fitted to the amplitude ratios between the overburden/half-space model and the idealized model. Finally, a zero-offset …