Abstract: A method for modelling the formation of a sedimentary basin using a stratigraphic forward modelling program is disclosed, wherein the stratigraphic forward modelling program simulates the superposition of successive layers of sediments, each layer of sediments corresponding to a determined period of time, the method comprising: a. Receiving a facies log comprising a succession of layers of different facies, b. determining environmental conditions associated to at least some of the facies of the facies log to infer an environmental factor log, c. determining from the facies log a number of layer of sediments and a thickness of each layer of sediments to be simulated by the stratigraphic forward modelling program for modelling the facies log, and d.

Abstract: A method of modelling a current induced by a river in a model comprising a plurality of cells, wherein the river-induced current is decomposed into a plurality of sub-currents corresponding to respective water depths, the method comprising, for each sub-current, steps of: —determining a width between lateral boundaries of a respective river jet of the sub-current, as a function of the distance from the river mouth, and —determining a direction and velocity of the sub-current in each cell located within the respective river jet, comprising: ?determining a direction and velocity of the sub-current in each cell located at a centerline of the jet, as a function of the distance from the river mouth, and ?inferring the direction and velocity of the sub-current in each other cell of the jet as a function of the distance between the cell and the centerline of the jet, and between the cell and the river mouth.

Abstract: A method for setting parameters of a stratigraphic forward modelling program for modelling the formation of a sedimentary basin, wherein the stratigraphic forward modelling program is configured to simulate the superposition of successive layers of sediments, each layer of sediments corresponding to a determined period of time, the method comprising steps of:—receiving a facies log corresponding to an initial state of at least one well belonging to the sedimentary basin, wherein the facies log comprises a succession of layers of different facies wherein each layer extends from a respective depth with a respective thickness, and—determining a number of layers of sediments to be simulated by the stratigraphic forward modelling program for modelling the facies log, and a thickness of each layer of sediments, such that each facies layer of the facies log is modelled by at least one corresponding layer of sediments simulated by the stratigraphic forward modelling program.