منابع مشابه
3-D prestack depth migration: Why Kirchhoff?
3-D prestack depth migration is emerging as an industrial imaging tool. Many competing algorithms have been proposed by various authors. Nevertheless, the real bottleneck in 3D prestack processes is the sheer amount of input and output data. This paper reviews the principal migration methods on the basis of their capacity for data manipulation, without evaluating the algorithms themselves. It c...
متن کاملKinematic Artifacts in Prestack Depth Migration
Strong refraction of waves in the migration velocity model introduces kinematic artifacts coherent events not corresponding to actual reflectors into the image volumes produced by prestack depth migration applied to individual data bins. Because individual bins are migrated independently, the migration has no access to the bin component of slowness. This loss of slowness information permits eve...
متن کاملprestack depth migration using CFP gathers
The common-focus-point technology CFP describes prestack migration by focusing in two steps: emission and detection. The output of the first focusing step represents a CFP gather. This gather defines a shot record that represents the subsurface response resulting from a focused source wavefield. We propose applying the recursive shot-record, depthmigration algorithm to the CFP gathers of a seis...
متن کاملExtended isochron rays in prestack depth „map... migration
Many processes in seismic data analysis and seismic imaging can be identified with solution operators of evolution equations. These include data downward continuation and velocity continuation. We have addressed the question of whether isochrons defined by imaging operators can be identified with wavefronts of solutions to an evolution equation. Rays associated with this equation then would pro...
متن کامل3-D parallel shot-gather prestack depth migration
3-D shot-gather prestack depth migration based on wave equation is an important method because of its good capability of imaging complex subsurface structures. In this paper, 3-D parallel shot-gather prestack depth migration with hybrid is developed and implemented. The shot-gather migration has high natural parallel feature because different processor can process shot-gather independently. Suc...
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ژورنال
عنوان ژورنال: First Break
سال: 2004
ISSN: 0263-5046,1365-2397
DOI: 10.3997/1365-2397.2004005