3D Surface-Related Multiple Prediction Approach Investigation Based on Wave Equation
详细信息
- 责任者：Shi Ying (School of Earth Science ; Northeast Petroleum University ; Daqing 163318 ; China) ; Wang Weihong
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(6)
- 关键词：多次反射 ; multiple reflection ; 波动方程 ; wave equation
- 页码：p.2023-2032
- 图表：9 illus., 40 refs.
- 分类号：1600
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Compare with the traditional 2D surface-related multiple prediction algorithm, 3D surface-related multiple prediction approach based on wave equation needs no assumption for underground medium. It is a powerful tool to deal with multiple prediction problem in seismic data processing, which is more conform to the actual situation that seismic wave propagate through the underground medium. Based on the fundamentals of multiple prediction, the matrix representation, calculation approach and realization condition for full 3D surface-related multiple prediction are proposed in this paper. Also using GPU (Graphic Processing Unit) to accelerate full 3D surface-related multiple prediction algorithm, compare to traditional CPU computation, the speed is 165 times faster. Multiple prediction tests are done on synthetic 3D seismic data with surface-related multiples, 2D and 3D surface-related multiple prediction effect from 2D and 3D algorithms are compared and analyzed, and the result demonstrates that full 3D surface-related multiple prediction approach based on wave equation has higher computation accuracy and better prediction effect than 2D algorithm. With the help of reasonable adaptive subtraction, we can obtain seismic prospecting data with high precision after surface-related multiple suppression.
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