二维叠偏剖面作构造图空校原理及方法  

The Spatial Correction Principle and Method for 2D Stack Migration Profile to Make Structural Map

作　　者：张书法[1] 刘后顺[1] 吴志高[1] 

机构地区：[1]中原石油勘探局勘探开发科学研究院,河南省濮阳市457001

出　　处：《断块油气田》1998年第2期25-27,共3页Fault-Block Oil & Gas Field

摘　　要：利用自激自收地震反射波原理在均匀介质条件下推导出地下反射点位置与射线路径、目的层视倾角、地震测线夹角及目的层埋深之间的复杂关系，并推广到层状介质条件下，计算反射点位置的偏移量及反射点到地面的垂直深度。用垂直深度作图，主测线联络测线可同时利用，精度高，形态逼真，断裂系统联接合理。此方法解决了目前二维叠加偏移剖面作图中存在的不闭合及数据为法线深度等问题。We have inferred complex relationships between the location of the reflection point and ray path, objective apparent dip, included-angle in seismic lines, and the buried depth of the objective interval in the homogeneous formation on the basis of the principle of the self-stimulus and self-receiving seismic re f1ection. This research has also been extended to the stratified-medium condition to calculate the migration of the reflection point and the vertical depth from the reflection point to the surface. If mapping is done by vertical depth, the inline and the cross-line can be simultaneously used which is characterized by high accuracy, lifelike shapes, and rational connection of the fractural system. This method has solved the problems such that seismic lines does not close and seismic data are normal-line depth which currently arose in the mapping by 2D seismic stack migration.

关 键 词：二维偏移 叠偏剖面 空间校正 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]