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| 基于时频分析的地震道集校平技术应用 | |
| 引用本文： | 慎国强,王玉梅,孟宪军,陆文凯,李霞.基于时频分析的地震道集校平技术应用[J].中国石油大学学报(自然科学版),2010,34(1). |
| 作者姓名： | 慎国强 王玉梅 孟宪军 陆文凯 李霞 |
| 作者单位： | 1. 中国石油大学,地球资源与信息学院,山东,东营,257061;胜利油田,物探研究院,山东,东营,257022 2. 胜利油田,物探研究院,山东,东营,257022 3. 清华大学信息科学技术学院,北京,100084 |
| 摘 要： | 依据现代信号分析理论,对叠前地震道集剩余动校正黾的消除技术进行研究,在模型数据和实际数据的试验基础上,探讨基于时频分析技术的叠前道集校平方法.结果表明:通过对地震信号进行时频分解,并在信号重构时完成高精度的剩余动校正量的消除,处理前后信号振幅不变,道集同相性增强,叠加后信号有效频带变宽;利用近偏移距地震道的叠加道作为模型道,在有效消除剩余时差和校平同相轴的同时,避免了叠前道集动校拉伸畸变对模型道的影响,保证了技术实现的精度;该方法在消除叠前道集中剩余动校正量方面具有较强的实用性. |
| 关 键 词： | 时频分析 模型道 道集校平 剩余动校正量 |
Application of seismic gather flattening technique based on time-frequency analysis |
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| SHEN Guo-qiang,WANG Yu-mei,MENG Xian-jun,LU Wen-kai,LI Xia.Application of seismic gather flattening technique based on time-frequency analysis[J].Journal of China University of Petroleum,2010,34(1). | |
| Authors: | SHEN Guo-qiang WANG Yu-mei MENG Xian-jun LU Wen-kai LI Xia |
| Institution: | SHEN Guo-qiang1,2,WANG Yu-mei2,MENG Xian-jun2,LU Wen-kai3,LI Xia2(1.College of Geo-Resources , Information in China University of Petroleum,Dongying 257061,China,2.Geophysical Research Institute of Shengli Oilfield,Dongying 257022,3.School of Information Science , Technology of Tsinghua University,Beijing 100084,China) |
| Abstract: | In terms of the modern signal analysis theory and the experiment of model data and actual data,the method based on time-frequency analysis to conduct pre-stack gather smoothing was discussed through the research of eliminating the residual normal moveout(NMO) of the pre-stack gather. The results show that the amplitude remains unchanged after processing,gather in phase increases,and the effective frequency band of the post-stack signal broadens by time-frequency decomposition seismic signal and high-accurac... |
| Keywords: | time-frequency analysis model trace gather flattening residual nomal moveout |
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