Methods of modeling velocity characteristics of the geological environment on the basis of the three-dimensional seismic data and well data

Petruniak, V. D.; Petrokushyn, O. Ye.; Ustenko, Ye. V.; Orach, S. V.

Purpose. Development of geological and geophysical models based on cut logging and seismic data using the latest technology processing, interpretation and integrated analysis of the available data. This will help to improve existing velocity models, and to avoid mistakes when creating new ones. Methodology. Specialized algorithms of migrational transformation of seismic data, modern methods of complex analysis of geological and geophysical data, building technologies of comprehensive velocity models of the geological environment were used. Correlation and features of ways to determine the velocity model in the case of biaxial and triaxial ellipsoids of radial velocity, as well as for isotropic model environment are considered. Findings. Methods of constructing velocity models, which will improve the results of the interpretation of geological and geophysical data are proposed. While analyzing seismic data particular attention was paid to anisotropy consideration. Linking borehole data, which have higher accuracy and resolution, with the three-dimensional seismic data, and the consideration of anisotropy help to get a velocity model with high reliability. Subsequently, the proposed methods for constructing velocity models can be used to simplify and optimize the process of constructing geological and geophysical models. Originality. We propose new ways of getting different values of velocity spectra. Possibilities of determination of the azimuthal velocity divergence in their three-dimensional spectra are considered. Practical value. Presented methods for constructing velocity models can be used to optimize the process of construction of geological and geophysical models. Linking well data, which have high accuracy and resolution, with the data of the three-dimensional seismic and accounting anisotropy will help to get a velocity model with a high degree of accuracy.


	Наукова періодика України		Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu