全三维随机噪声衰减技术

常规的随机噪声衰减技术(RNA)是使用一维空间预测算子,对三维地震资料按二维方式逐条测线进行处理.因而,它没有充分利用三维地震资料中更多的信号空间相干信息,未能实现真正的全三维随机噪声衰减.为此,本文以二维矩形预测算子代替常规RNA使用的一维预测算子,充分利用三维地震资料在相邻CDP面元上的空间相干信息,实现了三维地震资料的全三线去噪处理.

Full 3-D random-noise attenuation

The usual random-noise attenuation techniques use 1-D prediction operator to process 3-D seismic data line by line in the same way as is taken in 2-D data process-ing,so that they fail to make full use of signal-coherent informations in 3-D seismic data, without real full 3-D random-noise attenuation. Hence, I take 2-D rectangular prediction operator instead of common-used l-D prediction operator to make full use of coherent informations in adjacent CDP bins in 3-D seismic data,thus achieving full 3-D noise attenuation in 3-D seismic data.