收稿日期: 2010-11-24
修回日期: 2011-06-20
网络出版日期: 2011-10-10
Application of Wave Equation Prestack Migration in Carbonate Imaging
Received date: 2010-11-24
Revised date: 2011-06-20
Online published: 2011-10-10
王小卫, 姚姚, 刘文卿, 王艳香 . 波动方程叠前偏移在碳酸盐岩成像中的应用研究[J]. 天然气地球科学, 2011 , 22(5) : 874 -877 . DOI: 10.11764/j.issn.1672-1926.2011.05.874
Prestack migration has been an effectively method in some areas with complicated structure and dramatic lateral variation in velocity.In comparison with the wave equation pre-stack migration method to post migration method,the pre-stack migration method in seismic imagery processing of fracture-cave in carbonate rock has ability to obtain high resolution and amplitude-preserved migration results,finely portray the fracture-cave,and highly draw a string of beads.The migration results can reflect real structure underground and enhance the success rate of seismic prediction in carbonate karst area.We compare the pre-stack time migration method with the pre-stack depth migration method in theory,applicability and processing seismic section,and find out that the pre-stack depth migration method can obtain the profitable result in some areas with complicated structure and dramatic lateral variation in velocity.Velocity modeling is an important technique in wave equation pre-stack depth migration,so an accurate interval velocity is a key for wave equation pre-stack depth migration.
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