摘要
本文给出了用叠后资料反演一维波动方程双参数（密度和波速）的理论和方法。通过模型的正、反演试算及抗噪试验，证实了该方法与算法的可靠性与可行性，并通过松辽盆地方3井实际资料的反演，得到了密度、波速两个独立的剖面。文中对实际资料反演的结果作了合成记录，把它与原CDP道集对比，证实了实际资料反演的可靠性。从而双参数反演方法可为地震勘探提供更多的岩性参数。本方法已用于油田地震勘探实际资料的深度反演，直接按深度反演波速和密度。
The article describes an inversion method for deriving two parameters (density and velocity) of 1-D wave equation from poststack seismic data. Forward and inverse modeling computations plus noise resistant experiment prove this method reliable and feasible. Inversion of real data from Fang-3 borehole in Songliao basin results in density and velocity sections. Real inversion result has been used to make synthetic data. Comparison between synthetic data and original CDP data proves the inversion result reliable. The inversion method can offer rich lithology parameters for seismic exploration. The method has been applied to real depth inversion in oil field seismic exploration. Velocity and density are estimated directly in depth domain.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1999年第1期14-21,共8页
Oil Geophysical Prospecting
基金
国家自然科学基金!"八五"重大油储项目
关键词
地震勘探
波动方程
参数反演
地震数据
seismic exploration, wave equation, inversion, velocity, density
