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OwnerZyed BOUZARKOUNA, Didier Yu Ding +2inventors
InventorsZyed BOUZARKOUNA, Didier Yu Ding, Anne Auger, Marc Schoenauer
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A method is disclosed for determining well placements, or drainage areas, in a hydrocarbon reservoir to facilitate operation of the reservoir. Drainage area configurations are generated randomly, by generating, for each configuration, placements for each drainage area. The placements of each drainage area are determined to optimize a quality criterion, by an iterative optimization algorithm during which for first iterations, the quality criterion is evaluated by a flow simulator, and for subsequent iterations, an approximate evaluation model of the quality criterion is constructed. The quality of the approximate model is evaluated and the quality criterion is determined by the approximate model or by the flow simulator according to the quality of this approximate model.
1-7. (canceled)
A method for operating a hydrocarbon reservoir, in which placements for drainage areas within a hydrocarbon reservoir are determined, using a flow simulator and a reservoir model, in which drainage areas to be drilled within the reservoir are defined, and at least one quality criterion for the operation is chosen, comprising:
A method according to claim 7, wherein a quality of the approximate model is evaluated by carrying out the steps:
A method according to claim 7, in which the steps i to iii are reiterated by varying a number of drainage areas.
A method according claim 7, in which the iterative optimization algorithm is a CMA-ES stochastic algorithm.
A method according to claim 7, in which the drainage areas to be drilled include multiple-branched drains.
A method according to claim 7, in which the quality criterion is computed for each configuration by approximate models corresponding to one or more drainage areas.
Dependencies are inferred from the claim text.