Method system and program storage device for optimization of...

G - Physics – 01 – V

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G01V 11/00 (2006.01)

Patent

CA 2591709

A new adjoint method for calculating and using adjoint gradients in a Reservoir Simulator comprises: calculating adjoint gradients of an objective function with respect to changes in valve settings taking into account the modeling of pressure drop and fluid flow along a wellbore, and using the adjoint gradients to calculate sensitivities of a reservoir to changes in parameterization of downhole devices and using of these sensitivities in optimal control of the wells to optimize some objective function subject to production constraints.

Cette invention concerne un nouveau procédé adjoint servant à calculer et à utiliser les gradients adjoints dans un simulateur de gisement, ce procédé consistant: à calculer les gradients adjoints d'une fonction objective par rapport aux changements des réglages des valves, en prenant en compte la modélisation de la chute de pression et de l'écoulement des fluides le long d'un puits de forage, et à utiliser ces gradients adjoints pour calculer les sensibilités d'un gisement aux variations de la paramétrisation des dispositifs en fond de trou, et à utiliser ces sensibilités dans la régulation optimale des puits, en vue d'optimiser certaines fonctions objectives sujettes à des contraintes de production.

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