Application of Frequency-Dependent Amplitude Attenuation Method to Suppress Strong-Energy Noise in Offshore Seismic Data
详细信息
- 责任者：Niu Huawei (Institute of Shanghai Offshore Oil and Gas Company ; SINOPEC ; Shanghai 200120 ; China) ; Wu Chunhong
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2013
- 卷期：52(4)
- 关键词：地震勘探 ; seismic exploration ; 海洋物探 ; marine geophysical exploration
- 页码：p.394-401
- 图表：illus., 15 refs.
- 分类号：1600
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
Frequency-dependent amplitude attenuation method divides seismic data into different frequency band.Strong-energy noise can be identified by calculating amplitude strength of sampling points within the given frequency band and time window.The amplitude attenuation curve of the seismic sampling could be achieved by calculating every sampling ’s amplitude strength which is calibrated by the average absolute amplitude of the seismic sampling group.Then,the strong-energy noise can be effectively suppressed by applying time-variable threshold.The method is applied for noise elimination processing to offshore seismic data in the East China Sea,which shows that the method can completely suppress swell noise,seismic vessels interference and strong-energy noise with high or low frequency,and effectively suppresses the remaining multiples in near traces with great improvement of the S/N of offshore seismic data.
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