منابع مشابه
A massively parallel implementation of the common azimuth pre-stack depth migration
When accompanied by the appropriate algorithmic approach, seismic imaging is an application that can take advantage of massively parallel computer systems. Three-dimensional (3D) prestack time migration (PSTM) and pre-stack depth migration (PSDM) are key components of seismic imaging and require very large computing resources. In this paper, we show that execution of these algorithms can be dra...
متن کاملPre-stack Kirchhoff Time Migration on Hadoop and Spark
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...
متن کاملseismic imaging of complex structures by integrating pre-stack time migration and surface stacking methods
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...
متن کاملReverse 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...
متن کاملParallel Implementation of Pre-stack Least-squares Migration for Distributed Systems
Least-squares wave-equation pre-stack depth migration is a computationally expensive algorithm, requiring repeated application of wave-field modeling and migration algorithms. We describe a parallel implementation of least-squares migration for distributed parallel computing systems using MPI. The implementation distributes both the storage and processing requirements. In storage, the migrated ...
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ژورنال
عنوان ژورنال: Journal of the Japanese Association for Petroleum Technology
سال: 2008
ISSN: 1881-4131,0370-9868
DOI: 10.3720/japt.73.254