Method and device for determining proportion cubes

A device with a processor for determining at least one combined proportion cube for a facies of a geological model representing a real subsoil comprising a plurality of facies,

• the device comprising:
• an interface for receiving a reference proportion cube, said reference proportion cube having a first mean proportion;
• an interface for receiving an auxiliary proportion cube;
• a circuit suitable for at least one facies of the plurality of facies:
• modifying said auxiliary proportion cube, said modified auxiliary proportion cube having a second mean proportion, the second mean proportion being at a distance less than a predetermined distance from the first mean proportion;
• combining said reference proportion cube and said modified auxiliary proportion cube into the combined proportion cube;
• using said combined proportion cube for exploitation of hydrocarbons or gas.

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 the determination of at least one combined proportion cube for a facies of a geological model representing a real subsoil comprising a plurality of facies,

• the determination of at least one combined proportion cube comprising the steps of:
• for each facies in the plurality of facies:
• receiving a reference proportion cube, said reference proportion cube having a first mean proportion;
• receiving an auxiliary proportion cube;
• for at least one facies in the plurality of facies:
• modifying said auxiliary proportion cube, said modified auxiliary proportion cube having a second mean proportion, the second mean proportion being at a distance less than a predetermined distance from the first mean proportion;
• combining said reference proportion cube and said modified auxiliary proportion cube into the combined proportion cube;
• using said combined proportion cube for exploitation of hydrocarbons or gas.