摘要
短期基准面旋回的识别是划分高分辨率层序地层的关键 ,因此 ,采用定量的方法来研究基准面旋回的变化具有十分重要的意义。本文从测井资料的砂泥比计算入手 ,通过分别对地震反射系数密集度、合成地震记录振幅的旋回变化及地震时频的旋回变化进行分析 ,提出了一种综合识别基准面旋回并进行高分辨率层序地层自动划分的方法。通过在实际资料中的应用 ,验证了此方法的正确性 。
Recognition of short base level cycle is key to divide high resolution sequence stratigraphy;therefore,adopting quantitative method to study the change of base level cycle has very important meaning.Starting from calculating the sand to shale ratio based on logging data and through analyzing the density of seismic reflectivity,cycle change of synthetic seismic amplitude and of seismic time frequency,the paper presented a method for synthetic recognition of base level cycle and automatic division of high resolution sequence stratigraphy.The application of real data proved the correctness of the method,which a new method for quantitative study of sequence stratigraphy has been provided.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2003年第2期162-167,共6页
Oil Geophysical Prospecting
