Geology, geography and global energy

Scientific and Technical Journal

APPLICATION OF AVO-ANALYSIS AND LAME CONSTANTS FOR FORECASTING CARBONATE RESERVOIRS OF INTER-SALT DEPOSITS OF THE PRIPYAT TROUGH

2020. №4, pp. 22-29

Perevolockaya Yanina A. - RUE “Production Association “Belorusneft'”, BelNIPIneft', perevolotskaia@mail.ru

In the complex deep seismogeological conditions of the Pripyat trough, the need for research and identification of new deposits in the developed fields is relevant, which in turn determines the development of optimization approaches to all stages of seismic exploration. Obtaining a large volume of uniformly distributed seismic information in the course of areal seismic surveys allows not only to detail the structural plans of target horizons, but also, in conjunction with data from well studies, to forecast the reservoir properties in the interwell space. Prediction of properties in the interwell space in the areas of the Pripyat trough is carried out by almost all modules for the dynamic interpretation of seismic data, however, special interest in seismic inversion methods should be noted, as methods capable of obtaining additional detailed information about the properties of the geological environment. One of the standard procedures for dynamic analysis of seismic data is AVO analysis to determine the type of lithology and type of saturation at a qualitative level. For a more accurate prediction of rock properties, the Lame constants were calculated in the course of inversion transfor - mations, which in turn allow us to expand the possibilities of recognizing the lithology and estimated reservoir saturation. A comprehensive interpretation of the results of attribute AVO analysis and attributes that characterize the Lame constants in complex geological conditions of the Pripyat trough areas makes it possible to identify and map promising zones associated with hydrocarbon saturation with greater accuracy.

Key words: Pripyat Trough, dynamic analysis, AVO-analysis, Lam, forecast of reservoir properties

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