物探与化探Issue(3)：627-632,6.DOI:10.11720/wtyht.2015.3.33
VSP 高斯射线束法叠加成像
The Gaussian beam stack imaging method of VSP
摘要
Abstract
As one of the key steps in seismic data processing,stacking can effectively suppress the noise and improve signal⁃to⁃noise ra⁃tio.In VSP seismic exploration, the imaging precision of the conventional superposition method is greatly limited in the complex struc⁃ture.In this paper,the authors used the Gaussian beam method as forward modeling method for complex structure,compared the wave field characteristics of model with features of real data,and obtained the appropriate velocity field through adjusting the parameters.The idea of inverse Gaussian beam was adopted in the process of stacking,the common reflection point gathers were obtained by migrating the reflection wave field of real seismic data to the correct position,and then the stacking field characteristics could be acquired by stac⁃king the data in an appropriate bin size.A large number of model tests show that VSP Gaussian beam stacking method can effectively in⁃vert the underground structure characteristics.The method was used in the imaging study of M area,and the results show that this method can accurately invert the underground structure characteristics and provide an accurate basis for seismic data processing and interpreta⁃tion.关键词
VSP/叠加/高斯射线束/正演/逆高斯Key words
VSP/stacking/Gaussian beam/forward/inverse Gaussian beam分类
天文与地球科学引用本文复制引用
杨飞龙,孙渊,路婧,马迪,井涌泉,裴都..VSP 高斯射线束法叠加成像[J].物探与化探,2015,(3):627-632,6.基金项目
“十二五”国家科技重大专项 （）
