METHOD FOR DETERMINING THE GRAVITATIONAL EFFECTS OF A PLATE FOUNDATION BASED ON THE GRAVIMETRIC SURVEY DATA Russian patent published in 2023 - IPC G01V7/06 

FIELD: physics.

SUBSTANCE: group of inventions relates to the field of geophysics and can be used to determine the gravitational effects of a plate foundation at the target plot. Substance: the gravitational effect is measured at the target plot during a gravimetric survey. Seismic survey work is conducted at the target plot. The surface of the topography of the target plot is mapped. Structural maps of the target plot based on the seismic survey data and a map of the surface of the topography of the target plot are built. Boreholes are logged at the target plot. The density properties of rock of the sedimentary cover rocks at the target plot are determined by core. Rock density sections are built by boreholes to the entire depth of the sedimentary cover of the target plot using the logging data and the results of determining the density properties of rock of the sedimentary cover by core. A rock density model of the sedimentary cover is built for the target plot using the topography surface map, the structural maps, and the rock density sections by boreholes by the interpolation method. The gravitational effect of the sedimentary cover of the target plot is calculated based on the rock density model of the sedimentary cover. The zero line of gravitational effects is drawn for the calculated gravitational effect of the sedimentary cover of the target plot and the measured gravitational effect of the target plot to a single absolute value corresponding to the minimum value of the gravitational effects of the target plot. The gravitational effect below the roof of the plate foundation on the target plot is determined by geological reduction, wherein the calculated gravitational effect of the sedimentary cover of the target plot is subtracted from the measured gravitational effect of the target plot.

EFFECT: separation of the gravitational effects created by rock of the sedimentary cover and the plate foundation.

15 cl, 23 dwg