Simulation of insular karstification
AssigneeTotal SA
InventorGérard Massonnat
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for simulating karstification phenomena in karst zones, especially in insular regions. This method defines a geological model of the karst zone and simulates the movement of a particle in the geological model, this movement being probabilistic. This method furthermore modifies the geological parameter depending on the movement of the particle and on the aggressiveness of the particle. The aggressiveness of the particle depends on the coordinates of the particle.
Claims8
A method implemented by computer for simulating karstification phenomena in a real insular karst zone, comprising:
- a/ receiving a geological model of the karst zone, this model comprising at least one local geological parameter that is a function of the local coordinates in this model;
- b/ simulating the displacement of a particle in the geological model, said particle having coordinates in said model, said displacement being probabilized by taking into account:
- at least the local geological parameter, and
- at least one advective direction, this advective direction being a function of said coordinates of the particle in the geological model;
- in which the simulation of the displacement of the particle is performed for a plurality of simulation times, and in that the geological model defined is a function of a particular simulation time;
- c/ modifying the geological parameter according to the displacement of the particle and according to an aggressivity of the particle, said aggressivity being a capacity of the particle to erode rocks;
- in which the aggressivity of the particle is a function of said coordinates of the particle, and
- d/ determining an evolving of the geological model between a current time and a previous time based on the plurality of simulation times of steps /b/ and /c/;
- e/ determining zones of the subsoil exhibiting lithological characteristics to form hydrocarbon traps based on step d.
A device for simulating karstification phenomena in a real insular karst zone, said device being configured to implement the following steps;
- a/ receiving a geological model of the karst zone, this model comprising at least one local geological parameter that is a function of the local coordinates in this model;
- b/ simulating the displacement of a particle in the geological model, said particle having coordinates in said model, said displacement being probabilized by taking into account:
- at least the local geological parameter, and
- at least one advective direction, this advective direction being a function of said coordinates of the particle in the geological model;
- in which the simulation of the displacement of the particle is performed for a plurality of simulation times, and in that the geological model defined is a function of a particular simulation time;
- c/ modifying the geological parameter according to the displacement of the particle and according to an aggressivity of the particle, said aggressivity being a capacity of the particle to erode rocks;
- in which the aggressivity of the particle is a function of said coordinates of the particle, and
- d/ determining an evolving of the geological model between a current time and a previous time based on the plurality of simulation times of steps /b/ and /c/;
- e/ determining the hydrocarbon traps of the subsoil through complex periods and events based on step /d/.
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 unit and adapted to cause the data-processing unit to carry out, when the computer program is run by the data-processing device:
- a/ receiving a geological model of a real insular karst zone, this model comprising at least one local geological parameter that is a function of the local coordinates in this model;
- b/ simulating the displacement of a particle in the geological model, said particle having coordinates in said model, said displacement being probabilized by taking into account:
- at least the local geological parameter, and
- at least one advective direction, this advective direction being a function of said coordinates of the particle in the geological model;
- in which the simulation of the displacement of the particle is performed for a plurality of simulation times, and in that the geological model defined is a function of a particular simulation time;
- c/ modifying the geological parameter according to the displacement of the particle and according to an aggressivity of the particle, said aggressivity being a capacity of the particle to erode rocks;
- in which the aggressivity of the particle is a function of said coordinates of the particle,
- d/ determining an evolving of the geological model between a current time and a previous time of the plurality of simulation times based on steps /b/ and /c/;
- e/ determining the hydrocarbon traps of the subsoil through complex periods and events based on step /d/.
Dependencies are inferred from the claim text.