ТИПИЗАЦИЯ РАЗРЕЗОВ КОНТИНЕНТАЛЬНЫХ ОТЛОЖЕНИЙ КАК ОСНОВА ПОСТРОЕНИЯ ФАЦИАЛЬНЫХ МОДЕЛЕЙ ПО ДАННЫМ ДИНАМИЧЕСКОЙ ИНТЕРПРЕТАЦИИ СЕЙСМИЧЕСКИХ ДАННЫХ МОГТ 3D

Abstract

The article is devoted to the prediction of reservoirs in continental sediments on the basis of combining the results of dynamic interpretation of 3D seismic data and facies modeling. It is believed that the direct carrier of information about the petrophysical properties of reservoirs and their power are the results of drilling. However, in the territory of the Uvat district at the prospecting stage of exploration drilling volume is very limited and maps of effective thicknesses are calculated based on the results of dynamic interpretation of seismic data. Often such maps have errors of up to 5 m or more, so this forecast is always controlled by facies conditions, built according to the core and geophysical studies of wells. In order to correctly compare the forecast of reservoirs according to geological and seismic data, the article proposes an approach to the typification of continental sediment sections, which shows that each type of section is characterized not only by a certain set of sand lithotypes with different filtration and capacitive properties, but also by certain total reservoir thicknesses. The use of this approach allows us to construct facies models of continental sediments adequate to the texture data, and to correctly compare the distribution of reservoirs by seismic data.