... the gather with azimuth information, but the gather is also offset gather. The underground local angle domain full azimuth migration method directly starts from the real reflection point, and uses the ray scanning tracking method to construct the formation dip angle and ray pair information...

...) or amplitude-versus-angle (AVA) analysis. However, the computation cost of this approach increases linearly with the number of offset bins. We propose a new method to generate FDR gathers in subsurface angle domain with only twice the cost of standard 3D FWI for generating a total of 32 angle components...

... The imaging condition plays a crucial role in elastic imaging during constructing subsurface high-wavenumber images. The angle domain multicomponent images enable us to better retrieve petrophysical properties. Modern elastic imaging conditions are mainly designed based on specific P and S mode...

... diffraction seg international exposition exploration geophysicist 10 dataset angle domain Synthesizing seismic diffractions using a generative adversarial network Ricard Durall*1,2 , Valentin Tschannen1 , Franz-Josef Pfreundt1, Janis Keuper1,3, 1Fraunhofer ITWM, Germany, 2IWR, University of Heidelberg...

... for the inversion of angle domain common image gathers. The + = 0, (1) algorithm uses wave-equation migration and demigration in 0; 0; = the extended subsurface offset domain followed by an offset to angle transformation. We demonstrate using the and the upgoing extrapolation of the receiver wavefield Sigsbee2b...

... time mis-tie information can be acquired using full-azimuth reflection angle gathers. Finally, precise anisotropic velocity model was built through anisotropic iterative inversion of anisotropic velocity and parameters Epsilon () and Delta () using full-azimuth angle domain tomography technique...

... geometry and uneven illumination, the amplitude of the inverted images is unevenly distributed. The images and gradients can be severely contaminated. In addition, the gradient of the objective function in angle domain contains a derivative operator with respect to time or depth. For this reason...

... ABSTRACT The azimuth angle domain common image gathers (AzADCIGs) objectively indicate the velocity, anisotropy parameter anomaly, amplitude versus angle and azimuth (AVAz) and fractured information of the subsurface medium. The traditional Kirchhoff Migration usually outputs offset domain...

..., September 18, 2019 Session Start Time: 9:20 AM Presentation Time: 9:45 AM Location: Poster Station 7 Presentation Type: Poster domain inversion result seg international exposition inversion result bayesian theory ray parameter domain angle domain reservoir characterization avo inversion...

.... The cause of those artefacts can be studied by means of asymptotic analysis and numerical examples. Here, in order to mitigate those artefacts, a taper in scattering angle domain depending on acquisition geometry and imaging point is introduced. The application of the proposed new method is demonstrated...

... ABSTRACT To suppress the migration artifacts in the imaging results of irregular seismic data, we presented an efficient preconditioning method that uses the rank-reduction denoising. We realized that imposing constraints on the angle domain common image gathers (ADCIGs) results in better...

... migration dataset foothill land data imaging rtm angle gather angle domain annual international meeting upstream oil & gas image gather angle gather artificial intelligence reservoir characterization Dickens , T. A. , and G. A. Winbow , 2011 , RTM angle gathers using...

... ABSTRACT Poynting vectors are being a tool of calculating vector wavefield and sort data into angle-domain common-image gathers (ADCIGs) intrinsically, whereas conventional reverse time migration (RTM) requires extra processing to bin data into ADCIGs. The difficulty of Poynting vectors occurs...

... elastic parameter angle domain fluid indicator avo inversion application impedance upstream oil & gas ray parameter domain bayesian theory equation incident angle domain inversion result inversion inversion result reflection coefficient seg seg international exposition...

... seismic imaging. The data recorded at free surface are forward propagated and the same data are back propagated. Source information is not needed in this approach. To suppress the noise and improve the resolution in the migration result, we apply parabolic Radon transform in angle domain common image...

... Summary Angle domain common image gathers provide information for velocity model building and amplitude versus angle (AVA) analysis. They require good angular illumination to deliver reliable results. The main acquisition parameter affecting angular illumination is the shot density, which...

...Wave equation angle domain common image gather asymptotic analysis. Montel J.-P.* ,Lambaré G., CGG Summary The increasing usage of wave equation and reverse time migration has motivated investigations on new types of common images gathers. Several types of angle domain common image gathers have...

... Summary Due to the limitation of acquisition aperture, RTM, though as a true-amplitude propagator, cannot provide a true-reflection image. To relate the image amplitude with the target reflectivity, we propose an amplitude correction in the dip angle domain for RTM. The stacked migration image...

... Summary The angle-domain illumination can analyze the complex geological body finer. In this paper, we proposed a method of angle-domain illumination analysis with rugged surface. The main process uses the local slant stack technique to decompose the seismic wave-field, judging weighting...

... Summary Common-image gathers (CIGs) in the angle domain contain important information for velocity analysis and subsurface attribute analysis; and they may also be used to improve stacked migration images. In this paper we propose a new approach to compute the angle-domain CIGs for RTM based...