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依据Biot理论,提出计算理论地震图的相应传播矩阵算法,并针对井间地震震源和检波器的不同配置进行数值计算,结果表明,本文算法高频可达1000H2以上.文中算例说明利用震源和检波器相对于储油层的不同位置,可从反射震相记录波形上的差异,判定储油层存在与否.
According to the theory of Biot, a corresponding propagation matrix algorithm for calculating theoretical seismograms is proposed. The numerical calculation of different configurations of cross-seismic seismometers and geophones is carried out. The results show that the proposed algorithm can reach high frequencies above 1000H2. An example is given to illustrate that using the different positions of the source and detector relative to the reservoir, the presence or absence of the reservoir can be judged from the difference of the recorded waveform of the reflected seismic facies.