| 井间地震串联滤波波场分离方法 |
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| 引用本文： | 严又生.井间地震串联滤波波场分离方法[J].物探化探计算技术,1997,19(3):210-215. |
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| 作者姓名： | 严又生 |
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| 作者单位： | 石油物探局物探地质研究院 |
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| 基金项目： | 石油天然气总公司“九五”课题 |
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| 摘 要： | 本文根据井间地震波场响应以及多种波场分离方法的性能，采用基于Ｋ－Ｌ变换的特征向量滤波与中值滤波相结合的串联滤波方法分离井间地震观测到的上、下行反射波。数值计算结果表明：在波场分离过程中，由于同时综合考虑了地震波能量主分量分布以及反射波同相轴时差两个参数，使得分离效果明显、处理更为简便，具有滤波特征矢量的选取条件更为宽松、无需精确确定拉平轴的时间等特点。
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| 关 键 词： | 井间地震 波场分离 串联滤波 K－L变换 中值滤波 |
WAVE FIELD SEPARATION WITH A CASCADED FILTER ON CROSSWELL SEISMIC DATA |
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| Yan Yousheng.WAVE FIELD SEPARATION WITH A CASCADED FILTER ON CROSSWELL SEISMIC DATA[J].Computing Techniques For Geophysical and Geochemical Exploration,1997,19(3):210-215. |
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| Authors: | Yan Yousheng |
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| Abstract: | This paper presents a cascaded filter to separate the upgoing and downgoing reflection waves of crosswell seismic data, which is based on the K L transform and median filter. The excellent separating results of a synthetic common shot gather of crosswell seismic data show that the main advantages of this approach are that there is no difficulty to select the first few eigenimages for a low pass filter and that there is no need to pick up the time of an arrival accurately, which will be horizontally aligned. |
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| Keywords: | crosswell seismic wave field separation cascaded filter K L transform median filter |
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