纯振幅反褶积

在未知子波的情况下,可由地震剖面直接求取零相位子波,由零相位子波求出反褶积因子,并对地震记录作反褶积处理。纯振幅反褶积与其它类型反褶积不同,它不要求子波为最小相位,它的反褶积因子为零相位的对称波形,褶积结果不改变原剖面的相位特征,即没有时移。文中叙述了纯振幅反褶积因子的求法及实现高分辨率、高信噪比的可行性。

Pure-amplitude deconvolution

When wavelets are unknown, one can directly obtain zero-phase wavelets from seismic section, Then the zero-phase wavelets can be used to get deconvolution operators, which are then applied to deconvolution processing of seismic data.pure-amplitude deconvolution is different from other kinds of deconvolution in that it need not use minimum-phase wavelets and its deconvolution operator is a zero-phase symmetric wavelet so that the phase of original seismic section is not distorted after deconvolution (namely, no time shift).It is detailed how we get the pure-amplitude deconvolution operators.The feasibility of realizing high resolution and high signal to noise radio is also disccussed in the paper.