Seismic Wave Pre-Stack Reverse-Time Migration ——Model Analysis and Application
نویسندگان
چکیده
منابع مشابه
Reverse Time Migration = Generalized Diffraction Stack Migration
The standard reverse-time migration (RTM) algorithm is usually described as zero-lag correlation of the backprojected data with the source wavefield. The data are back-projected by a finite-difference algorithm, where each trace acts as a source-time history of a point source at the geophone location. This is a simple and easily understood migration method, but appears inflexible to improvement...
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the conventional approach to seismic data analysis consists of two main steps: estimating seismic velocities, (the subsurface macro-model), and seismic imaging, (mapping of the reflected seismic energy to the reflector positions). the aim and the major challenge in the seismic data analysis is the construction of the best undistorted image. this challenge would be more problematic when geometri...
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Pre-stack Kirchhoff time migration (PKTM) is one of the most widely used migration algorithms in seismic imaging area. However, PKTM takes considerable time due to its high computational cost, which greatly affects the working efficiency of oil industry. Due to its high fault tolerance and scalability, Hadoop has become the most popular platform for big data processing. To overcome the shortcom...
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Multiply scattered waves, including internal multiples, are rarely considered as signal when imaging with seismic waves. Reverse-time-migration techniques accurately handle the propagation of such complex scattered waves, but most of these techniques paradoxically do not fully utilize the illumination and energy of multiply scattered waves because these methods rely on the single-scattering ass...
متن کاملLinearized inverse scattering based on seismic reverse time migration
In this paper we study the linearized inverse problem associated with imaging of reflection seismic data. We introduce an inverse scattering transform derived from reverse time migration (RTM). In the process, the explicit evaluation of the so-called normal operator is avoided, while other differential and pseudodifferential operator factors are introduced. We prove that, under certain conditio...
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ژورنال
عنوان ژورنال: Advances in Geosciences
سال: 2014
ISSN: 2163-3967,2163-3975
DOI: 10.12677/ag.2014.43019