Research and application of phase controlled inversion based on waveform analysis in reservoir prediction

Summary Reservoir inversion is the main technical means of seismic lithology research, and modeling is the basis of inversion. From the perspective of seismic waveform characterization emphasized by seismic lithology, the core task of inversion is the imaging of formation thickness. Sedimentary reservoir thickness imaging is related to seismic frequency, and higher seismic frequency is more conducive to thin layer imaging. Therefore, frequency-division inversion modeling technology based on frequency-division thickness imaging becomes the basis for improving inversion accuracy, which overcomes the problem of low resolution of conventional model inversion or stochastic inversion. Waveform analysis inversion is based on frequency division modeling, combined with stochastic inversion, which not only ensures high logging resolution in longitudinal direction, but also ensures high seismic resolution in lateral direction. A new inversion method that can characterize the structural characteristics of sedimentary bodies and reservoir heterogeneity is realized.