摘要
介绍了聚束滤波方法消除地震资料中的多次波及层间多次波的基本原理。对地震资料处理来说 ,消除复杂地质区的规则地震干扰波是一个特别困难的具有挑战性的问题。对海底珊瑚礁产生的大范围强烈多次波 ,采用多次使用聚束滤波方法分别消除了不同范围的多次波。对于大港地区的陆地地震资料 ,层间多次波相当严重 ,去除层间干扰后分辨率和信噪比有明显的提高。聚束滤波方法对海上和陆地的地震资料处理都相当有效。
The paper introduces the basic concept of beamforming method in multiples and internal multiples attenuation. Regular interference attenuation is a particularly difficult and challenging task in areas of complex geology. Beamforming method was used in series with overlapped bands to remove the strong multiples generated by offshore coral reef. Results show that beamforming method can successfully eliminate the strong multiples (up to 10!). In the case of land seismic data from Dagang Oilfield, the internal multiples were very strong. Both resolution and signal-to-noise ratio have improved after elimination of multiples. Therefore the beamforming method is applicable to data processing for onshore and offshore seismic data.
出处
《勘探地球物理进展》
2003年第4期268-272,共5页
Progress in Exploration Geophysics
基金
973预研 (2 0 0 1cca0 2 3 0 0 )
关键词
地震勘探
聚束滤波方法
地震资料
规则噪音
信噪比
seismic prospecting
beamforming
multiples
signal-to-noise ratio
seismic model
