一种确定转换点的算法及其应用  

A method for determination of conversion points and its application

作　　者：傅旦丹 朱宏彰 何汉漪 

机构地区：[1]中海石油研究中心勘探研究院,河北高碑店074010 [2]中海石油研究中心,北京100027

出　　处：《石油物探》2002年第1期26-30,共5页Geophysical Prospecting For Petroleum

摘　　要：提出了在转换波资料处理中求取任意界面转换点位置的一种迭代算法。该方法在炮检距和横、纵波速度以及反射界面倾角已知的条件下 ,对任一转换波旅行时均可通过迭代方法确定其相应的转换点的位置 ,方法简单且有效 ,一般情况下 ,只需进行几次迭代就可得到精度很高的解 ,迭代过程稳定、收敛。该迭代方法不仅可直接用于转换波CCP道集抽取 。An iteration method for determination of conversion points at arbitrary interfaces is advanced in this paper. This method can calculate the locations of conversion points with very high precision for any travel time of converted waves, generally through not more than three iterations, given the shot-to-receiver distance, the S-wave and P-wave velocities, and the dip angle of interface are known. The method is simple, efficient and stable. It can not only be applied to CCP gathering, but also can be applied to converted wave velocity analysis and NMO.

关 键 词：算法 应用 多分量地震 转换波处理 共转换点 迭代法 速度分析 

分 类 号：P631.443[天文地球—地质矿产勘探]