Methods and systems for historical, geological modeling to produce an estimated distribution of hydrocarbons trapped in subsurface clathrates

摘要

Methods and systems for historical, geological modeling for producing an estimated distribution of hydrocarbons trapped in subsurface clathrates are disclosed. One 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. The 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.

主权项

1. A computer-implemented method for historical, geological modeling for producing an estimated distribution of hydrocarbons trapped in subsurface clathrates, the method comprising:
instantiating, on a computing system, a basin model of a geological area of interest; for each of a plurality of predetermined geological times up to a geologic present day, performing, via the computing system a plurality of computer-implemented processes including:
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; andestimating one or more clathrate concentrations and hydrocarbon volumes in the clathrate stability zone; calibrating, on the computing system, 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; and modifying the model of the present day clathrate concentration and hydrocarbon volume to improve a correspondence between the model and the calibration data.