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US 2020/0025971 A1Published application
Modelling geological faults
AssigneeTotal SA
InventorsClarisse Vergnes, Stephane Vignau, Pierre Bergey, Florent Lallier
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Abstract
To model hydrocarbon reservoirs more accurately, models of a geological volume using a three dimensional grid of cells populated with data from seismic studies are augmented by providing fine-grained stochastic models of the distribution of relays in fault zones and modelling the flow of hydrocarbons taking account the modelled relays.
Claims15
A method of simulating fluid flow in a geological volume comprising a geological fault, the method comprising:
- generating a three dimensional grid of cells representative of the structure of the geological volume, the cells comprising base cells;
- classifying a plurality of base cells as fault cells corresponding to the fault in the geological volume;
- classifying one or more sets of cells as relay cell sets corresponding to assumed locations of relays within the fault in the geological volume;
- generating a three dimensional relay grid of relay sub-cells in the place of each relay cell set, the relay sub-cells of each relay grid being representative of a relay structure within the geological fault and having a finer grid-cell dimension than that of the cells of the relay cell set;
- determining transmissibilities between the relay sub-cells;
- and
- determining transmissibilities between the base cells based on the determined transmissibilities between the relay sub-cells.
4 more elements
Dependencies are inferred from the claim text.