子波最小相位对最小平方反褶积效果影响

常规地面地震勘探中,地震波高频损失的影响因素有许多。为此,人们研究了各类反褶积方法提高分辨率。但是这些方法很多都是带有一定假设的,比如,假设子波是最小相位而且稳定的。本文研究了子波的最小相位性在提高地震资料分辨率中的重要性。准确的提取出地层的反射系数,是地震资料处理过程中重要而关键的一步。本文研究了不同相位子波(最小相位和混合相位)和对反褶积效果的影响,并且用最小平方反褶积来验证。实验结果表明,子波的最小相位性对最小平方反褶积效果有显著影响。

Influence of wavelets of minimum phase to the effect of minimum square anti-convolution

Rising up the resolving power is the eternal theme of hydrocarbon reservoir and physical geography.In normal seismic prospecting,the loss of high frequency of seismic signals is great.So people have a lot of ways of deconvolution to raise the resolution.Unfortunately,they need premises,such as wavelets have to be minimum phased and steady.In this article,the importance of minimum phase of wavelets is researched.It is important to distill reflecting coefficients accurately when processing seismic logs.The influence of wavelets of minimum phase to the effect of minimum square anti-convolution is researched.Wavelets of different phases(minimum phase and mixed phase)are experimented to approve the influence to the effect of minimum square anti-convolution.Experimental results of different wavelets demonstrate the effectiveness of minimum phase wavelets.