Abstract: A method for modelling a geological process by deforming sedimentary systems in a subsoil comprises (a) receiving a sedimentary model comprising: a first sedimentary system of a first type and associated with a first geological time, comprising a volume and at least one surface enclosing said volume; and a second sedimentary system of a second type and associated with a second geological time, comprising a volume and at least one surface enclosing said volume; and (b) applying at least one Boolean operation representing a geological process to the first and second sedimentary systems as a function of the first geological time, the second geological time, the first type, and the second type.

Abstract: A method for interconnecting geological bodies in a subsoil comprises (a) receiving a first geological body and a second geological body each comprising a first parametric surface comprising control points and knot vectors; (b) determining a low control point among the control points of the first parametric surface of each of the first geological body and the second geological body at a low vertical position in the subsoil; (c) modifying the low control point of the first parametric surface of the first geological body in such a way that said low control point corresponds to the low control point of the first parametric surface of the second geological body; and (d) interconnecting the first parametric surfaces of the first and second geological bodies by matching the low control points and the knot vectors.

Abstract: The present disclosure relates to a method for determination of a real subsoil geological formation. In at least one embodiment, the method includes receiving a model representing the real subsoil, determining a first stochastic trajectory of a first fluvial formation in said model, defining a constraint zone comprising said first fluvial formation, and determining a second stochastic trajectory of a second fluvial formation in said model within said constraint zone based on a stochastic process.

Abstract: The present disclosure relates to a method for determination of a real subsoil geological formation. In at least one embodiment, the method includes receiving a model representing the real subsoil. The model includes a shore line and a fluvial formation connected to the shore line at a point of the model. The shore line divides the model into a marine zone and a continental zone. The method further includes determining a delta zone in the model based on the shore line and based on the fluvial formation, determining a stochastic trajectory in said delta zone, and determining a lobe formation in said delta zone based on the determined stochastic trajectory based on a stochastic process.

Abstract: A method includes receiving a model representing a real subsoil geological formation. The model includes a stratigraphic layer, which includes a shore line dividing the stratigraphic layer into a continental zone and a marine zone. First and second flow speed fields are received, with the first flow speed field representative of a continental domain for the stratigraphic layer, and the second flow speed field representative of a marine domain for the stratigraphic layer. A global flow speed field is determined and includes a weighted combination of the first and second flow speed fields for each position in the stratigraphic layer. Weights of the combination are based on a distance of the position to the shore line and whether the position is within the continental zone or the marine zone. The real subsoil geological formation for the stratigraphic layer is determined based on the determined global flow speed field.

Abstract: A method of modelling a water current in a geological gridded model of a sedimentary area is disclosed, the model comprising a plurality of cells wherein each cell is assigned a water depth, the method comprising determining a direction and an energy of a water current in each cell of the model, wherein each water current is decomposed into a plurality of sub-currents corresponding to respective water depths, comprising at least:—a plume current, located at water surface, and—a bottom current, located at water bottom, the determination of a direction of a water current comprising determining a single direction common to each sub-current into which the water current is decomposed, and the determination of an energy of a water current comprising: —computing the energy of the plume current, and inferring, from the energy of the plume current, the energy of any other sub-current.

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: The present disclosure relates to a method for determination of a real subsoil geological formation. In at least one embodiment, the method includes receiving a model representing the real subsoil. The model includes a shore line and a fluvial formation connected to the shore line at a point of the model. The shore line divides the model into a marine zone and a continental zone. The method further includes determining a delta zone in the model based on the shore line and based on the fluvial formation, determining a stochastic trajectory in said delta zone, and determining a lobe formation in said delta zone based on the determined stochastic trajectory based on a stochastic process.

Abstract: The present disclosure relates to a method for determination of a real subsoil geological formation. In at least one embodiment, the method includes receiving a model representing the real subsoil. The model includes a stratigraphic layer, and the stratigraphic layer includes a shore line dividing the stratigraphic layer into a continental zone and a marine zone. The method further includes receiving a first flow speed field representative of a continental domain for the stratigraphic layer, and receiving a second flow speed field representative of a marine domain for the stratigraphic layer. A global flow speed field is determined and includes a weighted combination of the first flow speed field and the second flow speed field for each position in the stratigraphic layer, and weights of the combination are based on a distance of said position to the shore line and the fact that the position is within the continental zone or the marine zone.

Abstract: The present disclosure relates to a method for determination of a real subsoil geological formation. In at least one embodiment, the method includes receiving a model representing the real subsoil, determining a first stochastic trajectory of a first fluvial formation in said model, defining a constraint zone comprising said first fluvial formation, and determining a second stochastic trajectory of a second fluvial formation in said model within said constraint zone based on a stochastic process.