Method for determination of real subsoil composition
The present invention relates to a method for determination of real subsoil composition or structure characterized in that the method comprises: —reception of unmeshed model representing the real subsoil; —determination of a sediment trajectory in said model; —based on the sediment trajectory, determination of at least one parametric surface describing a sediment formation in said model; —based on the least one parametric surface, meshing the sediment formation in said model.
1. A computer-implemented method enabling industrial extraction of hydrocarbons from a hydrocarbon reservoir, comprising:
receiving, by an input interface of a computer, an unmeshed model representing real subsoil forming the hydrocarbon reservoir;
determining a sediment trajectory in said model, wherein determining the sediment trajectory comprises determining a displacement of particles in said model by superimposing:
a deterministic term that is defined based on observed data with respect to the real subsoil, and
a stochastic term parametrized at least by the observed data, the stochastic term comprising a superposition of a meandriform term and a random perturbation;
based on the sediment trajectory, determining at least one parametric surface describing a sediment formation in said model; and
based on the least one parametric surface, meshing the sediment formation in said model;
wherein the method further comprises:
determining at least one associated surface as a function of the at least one parametric surface, said associated surface describing an associated geological formation associated with the sediment formation, wherein the associated geological formation has rules of meshing independent of rules of meshing of the sediment formation;
based on said at least one associated surface, meshing the associated geological formation;
determining a composition of the real subsoil based on the meshed sediment formation and the meshed associated geological formation;
outputting, by an output interface of a computer, a complete model representing the composition of the real subsoil; and
locating, at a location in the real subsoil, a well for extraction of hydrocarbons from the hydrocarbon reservoir, wherein the well is located based on the composition of the real subsoil.
2. The method according to claim 1 , wherein determining the at least one parametric surface is based on a Non-Uniform Rational B-Splines (NURBS) curve or a NURBS surface or a NURBS volume.
3. The method according to claim 1 , wherein the sediment trajectory is determined based on a stochastic process.
4. The method according to claim 1 , wherein the sediment formation is meshed using at least one method of a group comprising a Quadtree meshing method, Octree meshing method, Front method, Delaunay method, Prograding grid, divergent grid, and aggrading grid.
5. The method according to claim 1 , wherein the method further comprises:
meshing of at least a part of the model that is not a determined formation.
6. A non-transitory computer readable storage medium, having stored thereon a computer program comprising program instructions, the computer program being loadable into a data-processing device and adapted to cause the data-processing device to carry out the steps of the method according to claim 1 when the computer program is run by the data-processing device.
7. A computing device enabling industrial extraction of hydrocarbons from a hydrocarbon reservoir, comprising:
a computer interface configured to receive an unmeshed model representing real subsoil;
a circuit configured to determine a sediment trajectory in said model, wherein said circuit is configured to determine the sediment trajectory by determining a displacement of particles in said model by superimposing:
a deterministic term that is defined based on observed data with respect to the real subsoil, and
a stochastic term parametrized at least by the observed data, the stochastic term comprising a superposition of a meandriform term and a random perturbation;
a circuit configured to determine, based on the sediment trajectory, at least one parametric surface describing a sediment formation in said model; and
a circuit configured to mesh, based on the least one parametric surface, the sediment formation in said model to produce a meshed sediment formation;
wherein the computing device further comprises:
a circuit configured to determine at least one associated surface as a function of the at least one parametric surface, said associated surface describing an associated geological formation associated with the sediment formation, wherein the associated geological formation has rules of meshing independent of rules of meshing of the sediment formation;
a circuit configured to mesh the associated geological formation, based on said at least one associated surface, to produce a meshed associated geological formation;
a circuit configured to determine a composition of the real subsoil for use in hydrocarbon industries, based on the meshed sediment formation and the meshed associated geological formation; and
an output interface configured to output:
a complete model representing the composition of the real subsoil, and
a location of a well in the real subsoil for extraction of hydrocarbons from the hydrocarbon reservoir, wherein the well is located based on the composition of the real subsoil.