PRO——一种新的地震资料处理方法
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摘要
PRO(影像的参数展开)技术是由俄罗斯地球物理学家开发的一种崭新的地震资料处理技术。本文从PRO基本原理入手,简单介绍了PRO的速度分析原理。PRO速度分析和成像均以信号的椭圆展开和参数展开为基础,其中参数展开方法考虑波型转换、介质的横向不均匀造成传播速度的变化。该技术抛开了传统共中心点叠加的思想,从根本上解决了以CMP方法为基础的传统地震处理技术遇到的困难。通过模型与实例分析对比,PRO比传统CMP方法更优越。
Parametric evolving of signal (PRO) technique is a new seismic processing technique developed by Russian geophysicist. Coming from the basic PRO principle, the paper brifly introduced the PRO velocity analysis principle. PRO velocity analysis and imaging are based on ellipse expansion of signal and parametric evolving, among which the latter considers the change of propagation velocity by wave mode conversion and lateral non-uniform of medium. The method throws away the idea of traditional common mid-poit (CMP) stack and solves at root the difficulty met by traditional seismic processing technology based on CMP method.It is proved by model and real case analyses that the PRO method has superiority over the traditional CMP method.
Parametric evolving of signal (PRO) technique is a new seismic processing technique developed by Russian geophysicist. Coming from the basic PRO principle, the paper brifly introduced the PRO velocity analysis principle. PRO velocity analysis and imaging are based on ellipse expansion of signal and parametric evolving, among which the latter considers the change of propagation velocity by wave mode conversion and lateral non-uniform of medium. The method throws away the idea of traditional common mid-poit (CMP) stack and solves at root the difficulty met by traditional seismic processing technology based on CMP method.It is proved by model and real case analyses that the PRO method has superiority over the traditional CMP method.
引文
[1]Kondrashkov V V,Aniskovich E M.Basic principles of parametric evolvent of signal method(PRO)as univer-sal technique of seismic data processing.Physics ofthe Earth,1998,(2):46~64
[2]Derigovski S Mand Rocca F.Geometrical optics and wave theory of constant offset secthions in layered media.Geophysical prospecting,1981,29,374~406
[3]Hale D.Dip moveout by Fourier transform.Geophys-ics,1984,49(6):741~757
[4]阎世信,刘怀山,姚雪根编著.山地地球物理勘探技术.北京:石油工业出版社,2000
[5]熊翥.复杂地区地震数据处理思路.北京:石油工业出版社,2002
[6]伊尔马兹著,黄绪德,袁明得译.地震数据处理.北京:石油工业出版社,1994
[2]Derigovski S Mand Rocca F.Geometrical optics and wave theory of constant offset secthions in layered media.Geophysical prospecting,1981,29,374~406
[3]Hale D.Dip moveout by Fourier transform.Geophys-ics,1984,49(6):741~757
[4]阎世信,刘怀山,姚雪根编著.山地地球物理勘探技术.北京:石油工业出版社,2000
[5]熊翥.复杂地区地震数据处理思路.北京:石油工业出版社,2002
[6]伊尔马兹著,黄绪德,袁明得译.地震数据处理.北京:石油工业出版社,1994
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