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Totalenergies Onetech

Totalenergies Se

Florent Lallier

Michael Montouchet

Stéphane Vignau

Pierre Bergey

Stephane Vignau

Clarisse Vergnes

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.

Modelling geological faults

Disclosed is a method of determining front propagation within a subsurface volume such as a reservoir. The subsurface volume includes a plurality of cells and at least one geological fault. The method includes performing a fast marching algorithm so as to determine the front propagation in terms of the time of arrival of the front at a particular cell from one or more neighboring cells which make up the neighborhood of the particular cell. For each faulted cell that is adjacent a geological fault, the neighborhood of the faulted cell is defined as including only its geometric neighbors, where the geometric neighbors are those cells that are in contact with the faulted cell in a geometric sense, regardless of stratification.

Methods of determining front propagation within a subsurface volume

Disclosed is a method of determining front propagation within a subsurface volume such as a reservoir. The subsurface comprises a plurality of cells and at least one geological fault (). The method comprises performing a fast marching algorithm so as to determine said front propagation in terms of the time of arrival of the front at a particular cell from one or more neighboring cells which make up the neighborhood of said particular cell. For each faulted cell (C) that is adjacent a geological fault, the neighborhood of the faulted cell is defined as comprising only its geometric neighbors (N, Ncells and Ncells) where the geometric neighbors are those cells that are in contact with the faulted cell in a geometric sense, regardless of stratification.

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Aberdeen, United Kingdom

Florent Lallier