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本文提出了小波域分频计算瞬时振幅 ,用瞬时振幅的高、低频之比计算拟吸收系数。该方法利用小波变换局部化特性好的特点 ,计算出的拟瞬时吸收系数不存在平均效应 ,准确地刻画出每一砂层高频衰减特征 ,实际油气藏检测证实了该方法的实用性和有效性
In this paper, the instantaneous amplitude is calculated by dividing the frequency in the wavelet domain, and the pseudo-absorption coefficient is calculated by the ratio of the high frequency and the low frequency of the instantaneous amplitude. The method utilizes the characteristics of wavelet transform to localize well, and the calculated instantaneous absorption coefficient does not have an average effect, and accurately characterizes the high frequency attenuation characteristic of each sand layer. The actual reservoir test proves the practicability and effectiveness of the method Sex