Rtm angle gathers using poynting vectors

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August undefined, 2024

WebDec 2, 2016 · Afterwards, in order to suppress the artifacts as a characteristic of RTM, a new imaging condition based on Poynting vector and a type of weighting function is presented. The capability of the proposed new imaging condition is then tested on synthetic data. WebIn this abstract we describe an efficient new method for creating angle gathers for reverse time migration (RTM). The method relies on the computation of the direction of energy …

Improving the Stability of Angle Gather Computation Using …

WebOct 1, 2024 · Angle-domain common-image gathers (ADCIGs) have wide applications in seismic imaging. For isotropic elastic reverse time migration (ERTM), we can produce dip-angle ADCIGs by using conventional Poynting vectors. Seismic anisotropy widely occurrs in Earth materials, such as in the shales and fractured reservoirs. WebSep 12, 2024 · A Poynting vector can be obtained from conventional velocity-stress elastic wave equations, but it focused on the propagation direction of mixed P- and S-wave fields, … theme 5 lettres

Non-overlapped P- and S-wave Poynting vectors and their solution by th…

WebGeneration of PP and PS angle gathers for elastic reverse time migration (ERTM) has important applications in velocity model updating and subsurface parameter inversion. The Poynting-vector-based method provides a cost-effective … WebDec 31, 2010 · In this abstract we describe an efficient new method for creating angle gathers for reverse time migration (RTM). The method relies on the computation of the direction of energy flux (known in electromagnetics as the Poynting vector) in … WebApr 2, 2024 · In this case, a new anisotropic wave‐mode separation scheme is developed using Poynting vectors. This scheme can be performed in the angle domain by constructing the relationship between group and polarization angles of different wave modes. Also, it is performed pointwise, independent of adjacent space points, suitable for parallel computing. theme 5 geopo terminale

Extraction of P- and S-wave angle-domain common …

Reverse time migration: A prospect of seismic imaging methodology

WebFeb 14, 2024 · Angle-domain imaging based on the Poynting vector improves the computation efficiency compared with local plane-wave decomposition. Finally, numerical simulations based on the SEG/EAGE velocity model are used to validate the proposed method. Download to read the full article text References WebIn this abstract we describe an efcient new method for creating angle gathers for reverse time migration (RTM). The method relies on the computation of the direction of energy ux … tiffany limassolWebThe Poynting vector approach, which is efficient and computationally inexpensive, was used to calculate the high-resolution wavefield propagation. The ADCIGs generated from the velocity and density perturbations match the theoretical AVA relationship better than ADCIGs with constant density. tiffany limited edition

"WebMar 1, 2006 · This work has developed an algorithm for computing RTM angle gathers in a relatively efficient manner, carried out in the space-time domain, avoiding the need to transform the wavefield to, for example, frequency-wavenumber space, as is needed for methods based on wavefront projection. 26 " - Rtm angle gathers using poynting vectors

Rtm angle gathers using poynting vectors

Computing dip-angle gathers using Poynting vector for elastic reverse

WebAug 16, 2024 · RTM angle gathers using Poynting vectors. 81st SEG annual international meeting, Expanded Abstracts, 3109–3113. [Google Scholar] DuveneckE. 2013. A pragmatic approach for computing full‐volume RTM reflection angle/azimuth gathers. ... Reverse time migration angle gathers using Poynting vectors. Geophysics 81, S511–S522. [Google … WebMay 23, 2011 · Angle domain common image gathers are recommended in Kirchhoff and reverse time migration for velocity model building in complex area. For these both approaches there is a general agreement that the tomographic ray pairs are fully defined by the reflection and azimuth angle information and the reflection dip and that if the velocity …

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WebJan 25, 2011 · In reverse time migration (RTM), Poynting vectors are widely used in applications, such as backscattered noise suppression, illumination compensation, and … WebFeb 13, 2024 · In this article, we introduce the Poynting vector method to calculate angle gathers for imaging of multiples. Based on the one-shot, one-position, and one-angle …

WebJun 1, 2024 · The energy flux density vector (Poynting vector) could be used to efficiently estimate the local propagation direction of seismic wavefield. It is convenient to … WebMar 5, 2024 · The Poynting vector represents the local directional energy flux density of seismic waves in geophysics. It is widely used in elastic reverse time migration to analyze source illumination, suppress low-wavenumber noise, correct for image polarity and extract angle-domain common-image gathers.

WebWe have developed an algorithm for computing RTM angle gathers in a relatively efficient manner. Our method is based on the construction of the directions of propagation of the … WebAug 30, 2016 · Poynting vectors are used to separate the wave propagation directions during the finite difference simulation and gradient calculation. The data separation can be conducted based on ray-theory. Since the Poynting vector is based on wave-theory, it can be a helpful check on the accuracy of the data separation.

Websimilar to regular RTM images, binned by apparent reﬂector dip. They can therefore be produced by augmenting a regular RTM method with a Poynting vector calculation step to …

WebDec 31, 2010 · In this abstract we describe an efficient new method for creating angle gathers for reverse time migration (RTM). The method relies on the computation of the … theme5WebAngle-Domain Common-Image Gathers for Imaging of Multiples Using Poynting Vectors IEEE Transactions on Geoscience and Remote Sensing, Vol. 61 Seismic reflection imaging of deep crustal structures via reverse time migration using offshore wide-angle seismic data on the eastern margin of the Sea of Japan theme 5 sensWebSep 22, 2013 · One efficient method to generate RTM angle gathers involves estimating wave propagation direction via the computation of Poynting vectors. Simple … tiffany lily lamp shadesWebApr 1, 2024 · Based on the above consideration, we categorize the RTM methods into two groups: A first generation of RTM methods taking primary reflections as the only signals, and a second generation of RTM methods making a full use of all computable wavefield types. Section snippets Challenges to seismic imaging and strategies of RTM tiffany lily lamps for saleWebOct 1, 2024 · Angle-domain common-image gathers (ADCIGs) have wide applications in seismic imaging. For isotropic elastic reverse time migration (ERTM), we can produce dip … tiffany li hillsborough houseWebTwo algorithms to stabilize multidirectional Poynting vectors for calculating angle gathers from reverse time migration. C Tang, G McMechan, D Wang. Geophysics 82 (2), S129-S141, 2024. 22: ... RTM angle gathers with Gaussian weighted time-lapse Poynting vectors and receiver wavefield reconstruction in forward time direction. C Tang, D Wang, H ... tiffany lily of the valley glasswareWebDickens and G. Winbow , RTM angle gathers using Poynting vectors, in Expanded Abstracts of the Society of Exploration Geophysicists, SEG, Tulsa, OK, 2011, pp. 3109 -- 3113 . Google Scholar. 14. A. Duchkov and F. Andersson . de Hoop, Discrete almost symmetric wave packets and multi-scale representation of (seismic) waves, IEEE Trans. Geosci. thème 5 hggsp terminale axe 2