METHODS AND SYSTEMS FOR HISTORICAL, GEOLOGICAL MODELING TO PRODUCE AN ESTIMATED DISTRIBUTION OF HYDROCARBONS TRAPPED IN SUBSURFACE CLATHRATES Russian patent published in 2018 - IPC G01V99/00 G06F17/50 

FIELD: geology.

SUBSTANCE: invention relates to the field of geology and may be used to determine the distribution of hydrocarbons in the subsurface area. Method and system of historical-geological modeling are disclosed to represent the expected distribution of hydrocarbons, trapped in subsurface clathrates. Method includes instantiating a basin model of a geological area of interest, and, for each of a plurality of predetermined geological times up to a geologic present day: determining one or more changes to the basin model, calculating, at each of a plurality of locations within the basin model, a temperature and a pressure, determining an existence and a location of a clathrate stability zone based on the calculated temperatures and pressures, and estimating one or more clathrate concentrations and hydrocarbon volumes in the clathrate stability zone. This method further includes calibrating a present day clathrate concentration and hydrocarbon volume derived from the basin model against calibration data obtained from one or more locations within the geological area of interest, thereby providing a model of the present day clathrate concentration and hydrocarbon volume at each of the plurality of locations.

EFFECT: high accuracy and reliability of obtained data.

15 cl, 6 dwg