On the basis of the block possibilities the technology of three-dimensional modelling of geological structure of subsurface sites is realized. Geological and structural tectonic maps, wells data, seismic, petrophysical and geochemical information, areal results of gravity and magnetic survey, spectrozonal aerospace images are used as source data for modelling.
The main stages of the technology include:
- clarification of structural maps of surfaces in the sedimentary cover and the surface of the basement using seismic and wells data for the district of the works
- clarification of the regional structural tectonic backing using the results of gravity and magnetic measurement and remote-sensed data.
- clarification of the surface geometry of the upper part of the section with the contrasting physical characteristics in the interprofile and interzonal space using the high-precision data of gravity and magnetic measurement
- building of 3D structural tectonic frame of the territory (block-layered model)
- filling of the block-layered model with physical characteristics: density, magnetization, velocity, if applicable)
- verification of the concordance between the physical block-layered models and the real data by the means of solving direct problems of gravity and magnetic measurement, models editing
- compilation of physical geological models by the means of solving classification problems and geological interpretation
The compiled physical geological models can be used in the prognostic investigations for different kinds of mineral resources and in the planning of geological surveys.
With the use of 3D modelling in GIS INTEGRO the following projects were successfully realized: the geological geophysical model based on the regional profile 8-DV (for Russian Geological Research Institute), the deep structure model of Volga-Ural oil-and-gas bearing region and Yenisei-Khatanga regional downfold (for All-Russian Research Geological Oil Institute) and others.
