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Date : 1997-12-01
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Seismic modeling SEG Wiki ~ Therefore seismic wavefield modeling may be viewed as the reverse process of seismic migration As such both seismic migration and seismic wavefield modeling algorithms are based on the wave equation Given a seismic wavefield Px z 0 t recorded over time t at the surface z 0 and along the spatial axis x seismic migration yields the earth’s reflectivity Px z t 0 based on a process of wavefield extrapolation in depth z and collecting the image at time t 0 migration
Seismic Modeling and Imaging Making Waves by Phillip ~ An example of reversetime migration for a salt pillow model from Bording and Lines 1997 SEG publication “Seismic Modeling and Imaging With the Complete Wave Equation” Figure 3a shows an unmigrated stacked section few reflection events can be discerned on the seismogram
Seismic modeling and imaging with the complete wave ~ Seismic modeling and imaging of the earths subsurface are complex and difficult computational tasks The authors present general numerical methods based on the complete wave equation for solving these important seismic exploration problems
Waves and Imaging Class notes 18 ~ 10 CHAPTER 1 WAVE EQUATIONS An additional equation called constitutive relation must be added to close the system It typically relates the pressure and the density in an algebraic way and encodes a thermodynamic assumption about compression and dilation For instance if the gas is assumed to be ideal and if the compression
PDF Seismic wave modeling for seismic imaging ~ In this paper we present a parallel algorithm of seismic imaging based on the solution of the oneway wave equation The algorithm includes parallelization of the data flow due to the multiple
Chapter 7 Seismic imaging MIT OpenCourseWare ~ An image or a gradient update is formed from the imaging condition by means of the incident and adjoint elds This operation is called migration rather than backprojection in the seismic setting The two wave equations are solved by a numerical method such as nite di erences
PDF Seismic Modeling and Imaging Using Wave Theory for ~ wave propagation intimate the subruface from side to side oneway and twowave wave propogation One–way wave equation migration methods are tested to image the faults in synthetic seismic section of Malay Basin and they are able to image the complex structure such as faults and fracture prevailing in the model
The Seismic Wave Equation ~ 40 CHAPTER 3 THE SEISMIC WAVE EQUATION in which the body forces are balanced by the divergence of the stress tensor This equation is applicable to static deformation problems in geodesy engineering and many other fields 33 The Seismic Wave Equation In order to solve 39 we require a relationship between stress and strain so that
Seismic Imaging Image Enhancements Characterization ~ Schlumbergers seismic imaging services utilize specific algorithms to target your challenge objectives Get better data for more informed decisions uses the twoway wave equation to produce highresolution velocity models Find Out More Earth Model Building The latest Earth Model Building technology improves geophysical processing and
Ray Tracing and Seismic Modeling SpringerLink ~ A seismic model accepts a description of the subsurface of the earth as input and produces a synthetic seismic record as output In raypath modeling ray tracing is carried out for models of multilayered folded structures so as to generate ray diagrams and synthetic time sections
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