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《Oil Geophysical Prospecting》 2001-01
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A method for making synthetic seismogram by considering amplitude versus offset (AVO).

Wang Xuejun and Ma jinfeng. Wang Xuejun, Geology Department, Northwest University, Xi’an City, Shaanxi Province,710069, China  
It is basic work for seismic data interpretation by using convolution model for making synthetic seismogram and then marking event. Building on the basis of vertical incident seismic wave by ordinary recurrence formula of reflection coefficients and having not considered variation of reflection coefficients with incident angle (or offset) by the recurrence formula, resulted quantity and polarity of reflection coefficients may have much difference with real data and easily resulted in errors in lithologic interpretation and event marking. The paper gave the recurrence formula of reflection coefficients in a non zero offset condition by simplified Zoeppritz functions. Using recurrence formula can calculate the reflection coefficient sequence at different offset and on different gather and convolution of the resulted section with wavelet can obtain more accurate seismogram. Model test shows correctness of the method.
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【CateGory Index】: P631.4
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