Abstract: A method for simulating flows in reservoirs, such as hydrocarbons, by means of chimera type grid which fluid generates a chimera grid made up of a set of elementary grids for accounting for characteristics of the flows and of the geometry (e.g., radial grid in the well zone and CPG grid for the reservoir) so that their union covers the entire simulation domain and that there is a minimum overlap between two neighboring elementary grids. Interpolation parameters allowing connection of the flows calculated on the grid to the flows calculated on the neighboring grids are then determined on the border of each elementary grid. Finally, flows are simulated within the reservoir and the well, and the variables describing the flow on the border of the overlap zones are interpolated using the interpolation parameters.

Abstract: The method of the invention allows, by means of an iterative inversion algorithm, prediction of the spatial distribution of the lithologic composition of sediments deposited in a sedimentary basin during a geologic time interval, and the temporal evolution of the depositional profile throughout filling of the basin, while respecting exactly the thicknesses of the sedimentary sequences measured otherwise which is useful for locating hydrocarbon reservoirs. Input data of thickness maps of the sedimentary layer, location and composition of the sediment supply at the boundaries of the sedimentary basin, and physical parameters characterizing transport of the sediments during the period of consideration are applied to an iterative inversion loop initialized by the accommodation provided by a stationary multilithologic diffusive model which works as a fixed-point algorithm correcting the accommodations by means of a preconditioning of the residue on the sequence thicknesses obtained by an instationary model.

Abstract: Method for simulating flows in reservoirs by means of chimera type grids. The method first consists in generating a chimera grid made up of a set of elementary grids capable of taking account of the various characteristics of the flows and of the geometry (radial grid in the well zone and CPG grid for the reservoir for example) in such a way that their union covers the entire simulation domain and that there is a minimum overlap between two neighbouring elementary grids. Interpolation parameters allowing to connect the flows calculated on this grid to the flows calculated on the neighbouring grids are then determined on the border of each elementary grid. Finally, flows are simulated within the reservoir and the well, and the variables describing the flow on the border of the overlap zones are interpolated using the interpolation parameters. Application: simulators for hydrocarbon reservoirs for example.

Abstract: The invention is a method relating to the formation by simulation of a reference map of the spatial distribution of the sediment supply, according to the composition thereof, in a sedimentary basin during a sedimentary deposition sequence (during a given geologic time interval) and also allows obtaining the topography of the land surface of the basin at the beginning and at the end of this period. The available input data are a map of the thickness of the sedimentary layer studied, known by interpretation of seismic survey results, data relative to the location and to the composition of the sediment supply at the boundaries of the sedimentary basin being studied, obtained by interpretation of seismic surveys, measurements and observations, and physical parameters characterizing transportation of the sediments (diffusion coefficients in the marine environment and in the continental environment) during the period considered. An application is locating hydrocarbon reservoirs.

Abstract: The method allows, by means of an iterative inversion algorithm, to predict the spatial distribution of the lithologic composition of sediments deposited in a sedimentary basin during a geologic time interval, and the temporal evolution of the depositional profile throughout filling of the basin, while respecting exactly the thicknesses of the sedimentary sequences measured otherwise. The input data consist of the thickness maps of the sedimentary layer studied, data relative to the location and to the composition of the sediment supply at the boundaries of the sedimentary basin studied, and physical parameters characterizing transport of the sediments during the period considered. These data are determined by interpretation of seismic surveys, by measurements and observations. This set of data is applied to an iterative inversion loop initialized by the accommodation provided by a stationary multilithologic diffusive model.

Abstract: The invention is a method relating to the formation by simulation of a reference map of the spatial distribution of the sediment supply, according to the composition thereof, in a sedimentary basin during a sedimentary deposition sequence (during a given geologic time interval) and also allows obtaining the topography of the land surface of the basin at the beginning and at the end of this period. The available input data are a map of the thickness of the sedimentary layer studied, known by interpretation of seismic survey results, data relative to the location and to the composition of the sediment supply at the boundaries of the sedimentary basin being studied, obtained by interpretation of seismic surveys, measurements and observations, and physical parameters characterizing transportation of the sediments (diffusion coefficients in the marine environment and in the continental environment) during the period considered.