Abstract
On the basement of seismic modeling of the wave field dynamic parameters, the issue of the reflected wave comprehensive interference phenomenon, which manifests itself both on real and model seismic records, is revealed in detail. For the first time, the concept of an elementary boundary and an elementary layer studied by high-resolution seismics for the investigation of a thin-layer geological environment is introduced. It is shown that the formation of a rather complex seismic wave field structure is influenced by the interference of seismic signal local components from the overlying acoustic heterogeneities. Such “seismic interference” in a certain sense is a reflection of the corresponding “geological indicator interference,” which is also very complex in its interference structure. The result of the “interference of geological indicators” can be observed on the results of automated geophysical borehole survey (GBS) data processing, where each point of the real geological model (especially on the lithological and stratigraphic columns in the productive intervals of the section) contains specific quantitative information about the lithological composition, reservoir properties, and oil and gas saturation of reservoir rocks. In turn, they influence the dynamics of the seismic record. The features of the reflected wave dynamic characteristics are considered, taking into account the contribution of elementary boundaries and strata to the results of the “original” wave field, pseudo-acoustic transformations, instantaneous dynamic parameters, deconvolution of the seismic record, etc. The contributions of lithology, porosity, and oil and gas saturation to the seismic record and to the results of its various transformations are evaluated. The information content of the thin-layer section elements is analyzed on the basis of a quantitative assessment of the elementary boundaries’ and layers’ contribution to the interference wave field. The contributions of local responses from lithology, porosity, water, and oil and gas saturation using the “interference contribution matrix” (ICM) are estimated.
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Trofimov, V.L., Khaziev, F.F., Trofimova, A.V. (2022). Seismic Modeling of Wave Field Dynamic Parameters. In: Oil and Gas Reservoir Prospecting and Exploration. Springer, Cham. https://doi.org/10.1007/978-3-030-84389-2_2
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