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一种确定转换点的算法及其应用
石油物探
2002年 41卷 第No. 1期
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Title
A method for determination of conversion points and its application
单位
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
Organization
1. Exploration Institute of CNOOC Research Center, Gaobeidian074010,China;2. CNOOC Research Center, Beijing 100027,China
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。
Abstract
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：
多分量地震;
转换波处理;
共转换点;
迭代法;
速度分析;
Keywords:
multi-component seismic;
converted wave processing;
common conversion point;
iteration method;
velocity analysis;
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