低信噪比条件下地震叠加速度的提取技术

基金项目:
中国海洋石油总公司技术发展项目"高精度叠加速度分析技术开发与应用"(C/KJF JDCJF 002-2010)

国家重大专项"莺琼盆地高温高压区高精度地震资料采集处理技术"(2011ZX05023-004-001)

详细信息

收稿日期: 2012-07-15

STUDY OF SEISMIC STACK VELOCITY EXTRACTION TECHNOLOGY FOR LOW SNR DATA

Received Date: 15 July 2012

摘要: 主要讨论了如何针对低信噪比地震资料进行更加精确的叠加速度提取问题。首先介绍了叠前多域LIFT去噪以及共反射面元叠加(CRS)等关键技术以提高地震数据的信噪比;其次研究了基于相位相关的连续速度分析方法以提高叠加速度提取的精度;最后总结出一套精确提取低信噪比条件下地震叠加速度的方法。
- 低信噪比 /
- LIFT技术 /
- CRS技术 /
- 叠加速度 /
- 精确提取
Abstract: This paper mainly deals with the technique to precisely extract stacking velocity for low SNR seismic data. At first, the LIFT for pre-stack multi-domain de-noises technology and the common reflection surface stack technology were introduced, to improve the SNR seismic data. Then, a new method of continuous velocity analysis based on e phase correlation was presented to improve the precision of the extraction of stack velocity. Finally, a set of methods for accurate extraction of seismic velocity under the low SNR condition was summarized.
- low SNR /
- LIFT technology /
- CRS technology /
- stacking velocity /
- accurate extract