摘要
简要介绍CFP(CommonFocusPoint)方法技术的基本原理和主要应用 .CFP是复杂介质地震处理中的一项新技术 ,它把叠前偏移分成两个独立的步骤 :首先对检波点 (炮点 )进行聚焦处理 ,产生共聚焦点道集 (CFP道集 ) ,然后再对炮点 (检波点 )进行聚焦 ,产生叠前偏移的输出 .两个步骤中间的CFP道集则可以进行其它处理 .如果是为了寻找构造信息 ,那么可以应用共焦点CFP偏移 ;如果是为了寻找岩石、孔隙或流体的信息 ,则要应用双焦点CFP偏移 .目前 ,该技术主要应用于 :(1)CFP两步聚焦法偏移 ;(2 )叠前深度偏移速度模型的建立 ;(3)试图通过算子而不是速度来解决复杂地表的静校正 ;(4 )消除全程或层间多次波 ;(5 )CFP方法基准面的延拓和盐下成像 ;(6 )多分量地震资料的偏移成像 .
The paper presents a new technology of CFP(Common Focusing Point) for seismic processing of complex media, CFP 's basic principles and main application is also showed briefly. CFP is a new technology in seismic processing of complex media. It formulates the pre stack migration into two focusing steps: the focusing in detection followed by the focusing in emission, the intermediate result is CFP gather that can be processed. Confocal CFP migration can provide angle averaged reflection information, while the bifocal CFP migration can provide angle-dependent reflection information. Application of CFP method includes: (1) CFP migration, (2) Building velocity depth model for pre stack depth migration; (3) Statics correction of complex surface area through operator representation instead of velocity; (4) Removal of internal multiples and (5), CFP datum extrapolation and subsalt imaging.
出处
《地球物理学进展》
CSCD
2003年第1期30-34,共5页
Progress in Geophysics
基金
国家 973项目重点研究基金 (G19990 3 2 80 0 )
CNPC物探重点实验室资助 .
关键词
CFP
叠前偏移
速度模型
双聚焦
CFP, pre stack migration, velocity model, double focusing
