GeoMUST技术及其在提高地震资料信噪比和分辨率中的应用
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摘要
地震勘探方法中的信噪比和分辨率是矛盾的对立统一体,常规地震资料处理流程很难在提高信噪比的同时提高分辨率,本文基于中国近海某工区数据,提出一种新的处理技术,在地质导向下采用多种方法将提高信噪比和提高分辨率分开进行处理,在处理的过程中互不干扰;再采用最优加权叠加技术将多处理流程得到的各自结果叠加起来,该技术简称为GeoMUST技术。合成记录处理试算和实际资料处理结果表明该技术可以兼顾信噪比和分辨率以及保真度。
As the signal-to-noise ratio and resolution is a unity of contradictory for seismic exploration methods,the conventional data processing can hardly improve the high signal-to-noise ratio as well as high resolution at the same time.Based on the data of one project at offshore of China,the authors put forward a new processing technique.We adopt multiple methods to improve the signal-to-noise ratio and resolution respectively under the geosteering.It won't disturb each other during processing;then we adopt the optimal weighted superposition technique to stack up each result of the processes.We call this GeoMUST technique in brief.Synthetic seismogram processing trial and the actual data processing results show that this technique can give consideration to improving signal-to-noise ratio,resolution,and fidelity at the same time.
引文
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