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本文通过从地震短时窗内提取振幅系列主分量地震特征参数，利用已知井旁道建立储层砂岩发育程度的隶属函数确定模糊模式。实例表明砂岩预测结果与实际井孔资料完全吻合，效果显著。
In this paper, the fuzzy mode is determined by extracting the seismic characteristic parameters of the amplitude series principal components from the seismic short-time window and using the membership function of establishing the reservoir sandstone development degree by known well bypass. The examples show that the prediction result of sandstone exactly matches the actual borehole data, and the result is obvious.