三维连片叠前深度偏移相关技术  

Techniques relevant to 3-D pieces-tied prestack depth migration

作　　者：张红军 

机构地区：[1]东方地球物理公司研究院海外业务部,河北省涿州市111信箱072751

出　　处：《石油地球物理勘探》2007年第B08期19-25,共7页Oil Geophysical Prospecting

摘　　要：三维连片数据处理已成为若干相邻分区块三维资料进行统一地质解释的最佳选择。本文主要针对复杂地表区和复杂地质构造地区存在的静校正,速度横向变化造成的低信噪比地震资料,讨论了振幅补偿、叠前去噪、层析静校正、叠前时间偏移、叠前深度偏移等与三维连片叠前偏移相关的一些技术,旨在为处理人员更好地运用这些技术解决复杂地表和复杂地质构造地区的地震资料的成像及提高资料的信噪比提供借鉴。3-D pieces-tied data processing has become optimal selection that the uniform geologic interpretation can be carried out for several adjacent blocks of 3-D data. Facing the seismic data with low S/N ratio resulted from the static corrections and lateral variation of velocities in complex surface and geologic structural areas,the paper made discussion on the techniques relative to 3-D pieces-tied prestack migration such as amplitude compensation, prestack denoise, tomographic static corrections, prestack time migration and prestack depth migration, which gave a reference to processors for better u-sing these techniques to solve the seismic data imaging in complex surface and geologic structural areas and improve the S/N ratio of data.

关 键 词：三维连片处理 共反射点道集 三维叠前时间偏移 三维叠前深度偏移 

分 类 号：P631.443[天文地球—地质矿产勘探]