Making True Amplitude Angle Domain Common Image Gathers Using Invertible Radon Transform
نویسندگان
چکیده
منابع مشابه
ave-equation angle-domain common-image gathers for converted waves
Wavefield-extrapolation methods can produce angle-domain common-image gathers ADCIGs . To obtain ADCIGs for converted-wave seismic data, information about the image dip and the P-to-S velocity ratio must be included in the computation of angle gathers. These ADCIGs are a function of the half-aperture angle, i.e., the average between the incidence angle and the reflection angle. We have develope...
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Shotand offset-domain common image gathers encounter problems in complex media. They can place events that come from different points in the subsurface at one subsurface location based on identical arrival times and horizontal slownesses. Angle-domain common image gathers uniquely define ray couples for each point in the subsurface, therefore each event in the data will be associated with only ...
متن کاملAngle-domain common image gathers for anisotropic migration
I present a general methodology for computing Angle-Domain Common Image Gathers (ADCIGs) in conjunction with anisotropic wavefield-continuation migration. The method is based on the transformation of the prestack image from the subsurface-offset domain to the angle domain by use of slant stacks. The processing sequence is the same as for the computation of ADCIGs for the isotropic case, though ...
متن کاملStacking angle-domain common-image gathers for normalization of illumination
Unequal illumination of the subsurface highly impacts the quality of seismic imaging. Different image points of the media have different folds of reflection-angle illumination, which can be caused by irregular acquisition or by wave propagation in complex media. To address this problem, we present a method of stacking angle-domain common-image gathers (ADCIGs), in which we use local similarity ...
متن کاملResidual moveout in anisotropic angle-domain common image gathers
To enable the analysis of the Residual Moveout (RMO) in Angle-Domain Common Image Gathers (ADCIGs) after anisotropic wavefield-continuation migration, I develop the fundamental concepts for quantitatively relating perturbations in anisotropic parameters to the corresponding reflector movements in ADCIGs. I then apply the general methodology to the particular case of RMO analysis of reflections ...
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ژورنال
عنوان ژورنال: Communications in Computational Physics
سال: 2020
ISSN: 1815-2406,1991-7120
DOI: 10.4208/cicp.oa-2018-0074